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1.
Article | IMSEAR | ID: sea-230908

RÉSUMÉ

Wheat (Triticum aestivum L.) is one of the world's most essential cereal crops, serving as a staple food for a significant portion of the global population. In the pursuit of achieving higher yields in contemporary agriculture, the use of chemical fertilizers poses an increased environmental risk. However, the application of Nano urea offers a potential solution to mitigate this risk to a certain extent. To address this objective, a field experiment was conducted during the Rabi seasons of 2022-2023 at the A trial was executed in the rural area of Kanpur district of Mandhana, located 10 km from Kanpur in Uttar Pradesh, during the Rabi season of 2022-23. The experimental design involved two main factors: Factor-1 Nitrogen (at 50%, 75%, and 100% levels) and Factor-2 Foliar Spray (at one time Nano urea and two time Nano urea, with 4 ml/l). A control group was included, and the experiment was laid out in a Randomized Block Design (RBD) with 13 treatments in three replications. The results indicated that the combination of 100% nitrogen along with a foliar spray of 4 ml/L Nano urea had a significant positive impact on growth, yield, and various yield parameters. Treatment 6 demonstrated the highest values for plant height (95.66 cm), Dry matter accumulation (1014.09 g m-2), number of tillers m-2 (417.44), Leaf area index at 90 DAS (4.85), effective ear head per (m-2) (282.66), grains per ear head (65.75), test weight (48.52 g), grain yield (46.15 quintals/ha), and straw yield (57.92 quintals/ha). The study's results demonstrated a generally positive effect of combined Nano urea with traditional NPK nutrient supply on the growth and yield parameters of wheat in irrigated conditions.

2.
Article | IMSEAR | ID: sea-230872

RÉSUMÉ

Aims: Conventional urea fertilizer has been critical in enhancing castor yields. However, nano urea, a game-changing technology in modern agriculture, provides a significant advancement in terms of sustainable and efficient crop production.Study Design: The experiment was conducted in a Randomized block design (RBD) with eight treatments and three replications.Place and Duration of Study: Tapioca and Castor Research Station in Yethapur during the Kharif season of 2022.Methodology: The major objective is to increase hybrid castor growth and production under rainfed circumstances by foliar application of nano urea. The castor hybrid YRCH 1 with an RDF of 60:30:30 NPK kg ha-1 was chosen for the study. The experimental details viz; T1 - 100% N through Urea –RDF, T2 - 50 % of recommended basal N + Nano urea foliar spray @ 2 ml/l at 30 and 60 DAS, T3 - 50 % of recommended basal N + 2 % Urea foliar spray at 30 and 60 DAS, T4 - 75 % of recommended basal N + Nano urea foliar spray @ 2 ml/l at 30 and 60 DAS, T5 - 75 % of recommended basal N+ 2 % Urea foliar spray at 30 and 60 DAS, T6 - 100 % of recommended basal N + Nano urea foliar spray @ 2 ml/l at 30 and 60 DAS, T7 - 100 % of recommended basal N + 2 % Urea foliar spray at 30 and 60 DAS.Results: According to the findings of the study, applying 100% of the recommended basal N + Nano urea foliar spray @ 2 ml/l at 30 and 60 DAS is advantageous to the crop and improves the growth and yield characteristics of hybrid castor under rainfed conditions. However, when compared to other treatments, foliar application of nano urea with 50% indicated basal N resulted in significantly lower growth and yield.Conclusion: The major objective is to increase hybrid castor growth and production under rainfed circumstances by foliar application of nano urea

3.
Article | IMSEAR | ID: sea-230820

RÉSUMÉ

Drought stress significantly hampers crop growth and yield by negatively impacting various biochemical and physiological plant processes. This study aimed to assess drought tolerance in traditional rice varieties using Poly Ethylene Glycol 6000 (PEG 6000) and focused on the effectiveness of melatonin applied through both seed treatment and foliar spray in mitigating the effects of drought stress. The optimal drought screening conditions were determined at a PEG concentration of -4 bars. As the PEG concentration increased, key factors such as germination percentage, vigor index, root length, and shoot length decreased. This indicates that PEG can be a useful tool for early selection of drought tolerant rice varieties. Melatonin (N-acetyl-5-methoxytryptamine), known for alleviating abiotic stress, showed positive effects on seed germination at 200 ppm concentration. The study observed that stomatal closure is a natural response to drought stress, but melatonin application induced partial stomatal opening. Notably, a foliar spray of 100 ppm melatonin demonstrated better recovery from drought stress compared to the 200 ppm concentration. In conclusion, the research suggests that seed treatment with 200 ppm melatonin and foliar spraying with 100 ppm melatonin are the most effective approaches for reducing the adverse effects of drought stress in rice plants.

4.
Article | IMSEAR | ID: sea-230793

RÉSUMÉ

Efficient utilization of water and fertilizers is important for maximizing yield for moth bean production through improvement the nutrient use efficiency under arid ecosystem. The aim of this study was to evaluate the effects of irrigation and nitrogen fertilizers on growth, yield and nutrient content of moth bean in the western zone of Rajasthan during 2020 & 2021. Treatments included three levels of nitrogen (N1:15 kg N as basal + foliar spray of urea (2%) at flowering stage, N2: 15 kg N + foliar spray of urea (2%) at pod development stage and N3: 15 kg N + foliar spray of urea (2%) at flowering and pod development stages) and levels three levels of irrigation (I1: single irrigation at branching stage, I2: two irrigation at branching + pod development stages and I3: two irrigation at flowering + pod development stages) were laid down in factorial combinations of randomized block design with three replications. The results revealed that 15 kg N + foliar spray of urea (2%) at flowering and pod development stage recorded significantly higher nitrogen, phosphorus and potassium content in seed and haulm over 15 kg N + foliar spray of urea (2%) at flowering stage and 15 kg N + foliar spray of urea (2%) at pod development stage. However, the phosphorus content in seed and haulm was not significantly influenced by N3 and statistically equivalent with N2 and N1 during 2020 and 2021. Potassium content in seed showed significant enhancement under N3, while K content in haulm was not affected significantly during 2020 and pooled basis. Further, irrigation management practices did not show any significant improvement on N, P, K content in seed and haulm during years of 2020 and 2021. While, N content in seed and haulm was significantly improved under I2 over I3 and I1 on pooled basis. Thus, 15 kg N as basal application + foliar spray of urea (2%) at flowering and pod development stages with two irrigations at branching + pod development stages improved the nutrient content in moth bean in arid condition.

5.
Article | IMSEAR | ID: sea-230774

RÉSUMÉ

A study on “Synthesis, Characterization and Impact of Nano-urea on Growth and Yield of Wheat in Inceptisol” was conducted at Division of Soil Science, College of Agriculture, Pune during rabi 2021. The object of this experiment is to synthesize and characterize nano-urea at post graduate laboratory of Soil Science, College of Agriculture, Pune and which is named as COAP (College of Agriculture, Pune). Nano-urea was synthesized from granular conventional urea and characterised for size of nano particles by using scanning electron microscope. The experiment consisted of twenty one combinations of treatment based on 3 levels of recommended doses of nitrogen (0, 50, 75%) and six nitrogen levels for foliar sprays and water spray as a control which was replicated twice in factorial completely randomized Design (FCRD). The foliar sprays of nitrogen consisted of four levels of COAP nano-urea @ 50, 100, 150 and 200 ppm, IFFCO nano-urea @ 160 ppm and conventional urea @ 10,000 ppm applied at 30 and 50 DAS.It could be revealed that average size of COAP (22.419 nm) and IFFCO (22.773 nm) nano-urea was almost same. Results revealed that conjoint application of 75% nitrogen along with two foliar sprays of conventional urea @10,000 ppm, COAP nano-urea @ 200 ppm and IFFCO nano-urea @ 160 ppm taken at 30 and 50 DAS for wheat recorded significantly higher periodical plant height and leaf area at 35 and 55 DAS. Significantly higher plant height was reported with combine application of 75% RDN along with two foliar sprays of urea @ 10,000 ppm (76.83 cm) which was statistically at par with nano-urea of IIFCO (76.20 cm) and COAP (74.20 cm) than rest of the treatment at 55 DAS. In case of leaf area, application of 75% RDN along with two foliar sprays of either conventional urea @ 10,000 ppm, IFFCO nano- urea @ 160 ppm and COAP nano-urea @ 200 ppm at 35 and 55 DAS. Application of 75% recommended dose of nitrogen along with two foliar sprays of 10,000 ppm conventional urea recorded significantly higher grain (45 g pot-1) and straw yield (65.39 g pot-1) of wheat which was found to be significantly at par with 75% RDN + IFFCO nano-urea @160 ppm (44.91 and 62.87 g pot-1) and 75% RDN + COAP nano-urea @ 200 ppm (44.83 and 60.66 g pot-1).

6.
Article | IMSEAR | ID: sea-230757

RÉSUMÉ

Vegetables are one of the main elements in terms of ensuring a person's food security and nutritional well-being. Integrated application of macronutrients coupled with adequate incorporation of micronutrients is one of the key factors for quality vegetable production. For ensuring maximum vegetable production with superior quality foliar nutrition is the better alternative in the era of climate change. Foliar application is the easiest and most effective way to administer micronutrients as compared to other methods. Trace elements such as iron (Fe), zinc (Zn), manganese (Mn), molybdenum (Mo), boron (B), chlorine (Cl), copper (Cu), and nickel (Ni) are essential for vegetable crops. The primary goal of this review article is to investigate the merits of micronutrients and the production potential of various vegetable crops through foliar nutrition. Additionally, this study aims to clarify the role of micronutrients in quality vegetable production. Several studies suggested that the exogenous application of micronutrients has a tremendous effect on overall growth and quality in a variety of crops. Many researchers have demonstrated that applications of Boron @250ppm significantly influenced the fresh weight of fruit, number of fruits per plant, number of seeds per plant, germination%, vigour index and root and shoot lengths of seedlings in sweet pepper. Various researchers also concluded that the application of Zn @1000 ppm + B @200 ppm + Mo @50 ppm provides a significant impact on head diameter, volume of head, chlorophyll a, chlorophyll b and chlorophyll total in cabbage.

7.
Article | IMSEAR | ID: sea-230709

RÉSUMÉ

In pursuit of high yield today’s agriculture cultivars put the environment at greater risk by the inputs of chemical fertilizers. Using Nano urea we can minimize the inputs damage upto a certain extent. With this objective, field experiment was carried out during Rabi seasons of 2022-2023 at Crop Research Farm, Department of Agronomy, SHUATS, Prayagraj, Uttar Pradesh on topic “Effect of nano urea and foliar spray of urea on growth and yield of wheat”. The treatment include two factors, Factor- 1 Nitrogen (50 %, 75%, 100%) and Factor- 2 Foliar Spray (2ml/L nano urea, 4 ml/L nano urea, 2% urea) and one control was laid out in Randomized Block Design (RBD) with 10 treatments and three replications. Result revealed that 100% nitrogen along with foliar spray of 4ml/L nano urea recorded significant effect on Growth, yield and yield parameters. Treatment 6 recorded maximum plant height (101.62 cm), dry weight (21.95 g) number of tillers/running row (85.02), number of effective tillers/m2 (340.08), number of grains/spike (54.16), test weight (48.52 g), grain yield (6.30 t/ha) and straw yield (7.98 t/ha).

8.
Article | IMSEAR | ID: sea-230686

RÉSUMÉ

A field experiment was conducted during 2018 and 2019 at the Agronomy Research farm of A.N.D. University of Agriculture and Technology, Kumarganj, Ayodhya, UP to evaluate the effect of foliar application of macro and micronutrients on yield and nutrient uptake of rice (Oryza sativa L.). The experiment consists of 10 treatment combinations with some foliar application macro and micronutrients two foliar spray tillering stages and a panicle initiation stage which were laid out in randomized block design with three replications. The results revealed maximum grain yield (38.50 and 40.40 q ha-1), straw (51.90 and 54.60 q ha-1), and harvest index (42.64 and 42.53 %) with treatment T10-75% RDF + WSCF @ 0.5 % (19:19:19) + ZnSO4 @ 0.5 % + Boron @ 0.25 % which was statistically at par with T3- 125 % RDF and significantly superior over rest of the treatments during both the years ., was recorded Similarly significant improvement in nutrient uptake (N, P, K, S, Zn, and B) by rice was observed in T10. Thus, it can be concluded that the application of 75% RDF + WSCF @ 0.5 % (19:19:19) + ZnSO4 @ 0.5 % + Boron @ 0.25 % can improve the yield and nutrient uptake.

9.
Article | IMSEAR | ID: sea-230226

RÉSUMÉ

A field experiment was conducted during Rabi 2022 at Crop Research Farm, Department of Agronomy, SHUATS, Prayagraj (U.P) to study the ”Effect of Nitrogen Rates and Foliar Spray of Urea Application and Nano Urea on Yield and Economics of rabi Maize (Zea mays L.)”effect of three nitrogen rates (50%, 75% and 100% RDN ) and three foliar spray of urea viz 20000 PPM (2%) and nano urea viz 2000 PPM (2 ml/L) and 4000 PPM (4ml/L) application on yield and economics of rabi maize (Zea mays L.). The soil of experimental plot was sandy loam texture, nearly neutral in soil reaction (pH 7.1), low in organic carbon (0.28%), available N (225kg/ha), available P (19.50) kg/ha) and available K (92 kg/ha). The experiment consists of 10 treatment, each being replicated thrice and laid out in Randomized Block Design. The results of present investigation revealed that the highest Grain yield (6.41 t/ha), Stover yield (8.65 t/ha), Harvest Index (42.58), Maximum gross return (INR 1,28266.67), Net return (81,682.75) and B:C ration (1.75) under 100% RDN +4000ppm (4 ml/l) spray of nano urea.

10.
Article | IMSEAR | ID: sea-230139

RÉSUMÉ

Safflower (Carthamus tinctorius L.) is an important oil seed crop, essential as vegetable oil for humans and feed for livestock. The experiment was conducted in a split plot design to study the effects of foliar application of nano urea and urea on safflower growth and development. The results showed that application of 100% nitrogen in the form of urea topdressing at vegetative stage and foliar spray of nano urea twice at flowering and seed filling stages significantly improved the physiological parameters viz. plant height (cm), primary branches of safflower. The CSI, RWC, Seed yield (kg/ha), 100 seed weight (g) and hull content (%) of safflower also significantly improved with 100% N and foliar spray of nano urea twice at flowering and seed filling stages. The result from the study suggests that application of urea as split doses and foliar spray of nano urea at reproductive stage is beneficial for the crop and will improve seed yield and oil quality of safflower. Foliar application of nano urea improves the nutrient uptake by the crop through its slow and controlled release of nutrients. It also helps in reducing environmental pollution due to leaching of fertilizers.

11.
Article | IMSEAR | ID: sea-230002

RÉSUMÉ

The study was carried out at Vegetable Research Station, TNAU, Palur, Tamil Nadu during 2021to2022. The experiment was laid out in Factorial Randomized Block Design (FRBD) with eight treatments and three replications. Planting materials used for the study were bulbs and bulblets. The eight nutrient combinations were tried with foliar application of micronutrient like zinc sulphate (0.2%), Ferrous sulphate (0.5%), Copper sulphate (0.4%) and Boric acid (0.2%) on 30, 60 and 90 DAP, individually and in combination with 25 t ha-1 FYM and recommended dose of fertilizer (200:200:200 kg ha-1 NPK). The control was maintained with RDF. Various biometric observations on growth and flowering attributes of tuberose were observed for all the treatments at different stages. The result of the present investigation revealed that among the interaction effects,B1N8[RDF + ALL 19 (NPK) + GA3@ 200 ppm (2 spray at 30 days intervals) + ZnSO4 (0.2%) + FeSO4 (0.5%) + H3BO3 (0.2 %) + CuSO4 (0.4 %)] recorded the highest plant height (95.12 cm), leaf length (51.85 cm), leaf width (2.4 cm), number of leaves per plants (42.67), rachis length (34.87cm), number of floret/spikes (46.66), flower duration (18.12 days), floret length (6.92 cm) and floret diameter (4.39cm) followed by the treatment B2N8 which recorded the highest height (90.44 cm), leaf length (48.48 cm), leaf width (2.2 cm), number of leaves per plants (39.78), rachis length (30.42 cm), number of floret/spikes (44.95), flower duration (19.93days), floret length (6.45cm) and floret diameter (4.21cm). From the interaction effect, the treatment combinationB2N1 [control (RDF) 200:200:200 NPK] recorded the lowest plant height (72.36 cm), leaf length (42.81 cm), leaf width (1.12 cm) and number of leaves per plants (43.00), rachis length (25.11cm), number of floret/spikes (37.00), flower duration (15.23days), floret length (5.04 cm) and floret diameter (3.02 cm).

12.
Article | IMSEAR | ID: sea-229889

RÉSUMÉ

Background: Present investigation was carried out to evaluate the performance of the different levels of GA3 and NAA as foliar spray on growth and yield attributes of cauliflower cv. Pusa Snowball KT-25 at Vegetable Research Farm, Regional Horticultural Research Station, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari, Gujarat.Methods: The experiment was framed in Randomized Block Design with three replications, which included nine treatments.Results: The results revealed that the application of GA3 @ 150 mg l-1 (T5) recorded higher values for growth character viz., plant height (69.26 cm), number of leaves plant-1 (29.67), length of stalk (6.54 cm) as well as plant spread in N-S (69.48 cm) and E-W (71.70 cm). In case of yield attributes, the same treatment GA3 @ 150 mg l-1 (T5) at 40 and 60 DATP exhibited maximum curd diameter (17.80 cm), gross weight of curd (2.88 kg plant-1), net weight of curd (789.59 g plant-1), yield plot-1 (20.23 kg) and yield hectare-1 (31.22 t) followed by NAA @ 80 mg l-1 (T7). Whereas, days to 50 % curd initiation and days to first marketable curd did not show any significant differences.

13.
Article | IMSEAR | ID: sea-229805

RÉSUMÉ

Micronutrient deficiencies play a significant role in impacting the yield and quality of grapes in vineyards. To address the deficiencies, a field study was conducted during the summer, of 2022 by using foliar micronutrient mixtures in three different concentrations (0.5%, 1.0%, and 1.5%), with one spray during pre-fruit set stage and twice at pre-fruit set/berry growth stages. The study aimed to investigate the effects of foliar micronutrient application on the biochemical quality characteristics of the Muscat Hamburg grapevine cultivar. The results of the study showed that the application of micronutrients spray showed a beneficial impact on all the yield parameters, such as number of bunches per vine (ranging from 28 to 44), the yield per vine (varied from 5.56 to 6.55 kg per vine), with overall yield range between 20.7 to 24.2 t ha-1. The biochemical properties of the berries, including sugars (reducing, non-reducing, and total sugars), juice pH and content, TSS (Total Soluble Solids), Titrable acidity, and berry firmness, were found to be high in grapevines sprayed at 1.0% twice. Results showed that total sugars ranged from 15.2% to 10.7%, with a juice pH of 3.47 to 3.94, juice content of 83.5 to 95.5%, and TSS from 15.6 to 17.40º Brix. Regarding the Titrable acidity and firmness of the berries, the outcomes showed a range of 0.92% to 1.14% for acidity and 9.4 to 12.9 N for firmness. Findings from the study clearly showed that applying 1.0% micronutrients twice at fruit-set and berry stages increased yield and improved quality indices of Paneer grapes.

14.
Article | IMSEAR | ID: sea-229231

RÉSUMÉ

Field experiments were conducted at the South farm in Karunya Institute of Technology and Sciences, Division of Agronomy, Coimbatore, during the Rabi season of 2022. The experimental site is situated in the western agro-climatic zone of Tamil Nadu, at a latitude of 10°56'N and longitude of 76°44'E, with an elevation of 474 meters above mean sea level. The soil composition of the experimental field was identified as clay loam, moderately drained, and exhibited low availability of nitrogen (202 kg/ha), high availability of phosphorus (12.3 kg/ha), medium availability of potassium (415 kg/ha), and organic carbon content of 0.51%. The experiment followed a randomized block design (RBD) with 10 treatment groups, each replicated three times viz.,T1 - Control, T2 - Vermicompost 100% (on N Equivalent basis)+ Cowdung slurry, T3 -Vermicompost100% (on N Equivalent basis)+TNAU Biomineralizer,T4 -Vermicompost100% (on N Equivalent basis) + (Effective microorganism),T5 - Vermicompost 100% (on N Equivalent basis) + Pleurotus sp + Urea, T6- Vermicompost (50%) +RDF (50%) + Cowdung slurry, T7- Vermicompost (50%) +RDF (50%) + TNAU Biomineralizer, T8 -Vermicompost (50%) + RDF (50%) + EM (Effective Microorganism),T9 -Vermicompost (50%) + RDF (50%) + Pleurotus sp ,T10 - RDF alone. The objective of the study was to investigate the impact of vermicompost and other foliar applications on the growth, physiological characteristics, and yield parameters of an irrigated Black gram (VBN8 variety). The promotion of yield can be attributed to the increased vegetative growth and the balanced carbon-to-nitrogen (C: N) ratio, which likely stimulated the synthesis of carbohydrates. This, in turn, facilitated the overall improvement in seed yield. The application of RDF played a significant role in enhancing growth, leading to various positive changes in yield-related characteristics. Ultimately, the increased seed yield observed can be largely attributed to the improved plant growth and subsequent positive effects on yield-related attributes resulting from the RDF application. Thus, From this Experiment it was Concluded that the RDF (T10) Shows a highest range in growth, physiological and yield parameters of irrigated Blackgram due.

15.
Article | IMSEAR | ID: sea-229028

RÉSUMÉ

An investigation on nano nitrogen and nano zinc with different levels of nitrogen approaches on growth and yield of paddy was conducted during rabi and kharif seasons of 2020-21 and 2021-22 at Krishi Vigyana Kendra, Gangavathi, Koppal, Karnataka, India. The experiment was laid out in split-split plot design with three replications, which consisted of four levels of nitrogen in main plots, three levels of nano nitrogen in sub plots and two levels of nano zinc in sub-sub plots. The treatment with application of 125 per cent Recommended Dose of Nitrogen (RDN) has recorded significantly taller plants (97.11 and 96.54 cm), higher number of tillers hill-1 (19.65 and18.14) and total dry matter (70.06 and 64.54 g hill-1) at harvest stage of crop and the Soil Plant Analysis Development (SPAD) values (46.69 and 42.60) and Normalized Difference Vegetation Index (NDVI) values (0.85 and 0.82) at flowering stage of crop, Similarly, foliar spray of nitrogen @ 4000 ppm has recorded significantly higher plant height (95.44 and 91.33 cm), higher number of tillers hill-1 (17.75 and 16.01), total dry matter (66.84 and 62.31 g hill-1) SPAD values at flowering stage (44.89 and 41.29), NDVI values at flowering stage (0.81 and 0.74), grain yield (5623 & and 6840 kg ha-1) and straw yield (5352 and 6581 kg ha-1). Interaction effect showed non-significant effect with different combination treatments.

16.
Article | IMSEAR | ID: sea-229024

RÉSUMÉ

Seed Production of rice fallow blackgram variety, ADT3 has limitations due to inherent issues of soil fertility, climate change and thermo sensitivity results in poor flowering, reduced pod setting and poor seed filling. Macro and micro nutrients application during critical stages of growth were tried to improve the seed yield and quality in rice fallow blackgram variety ADT3. The combined foliar spraying of 0.5% NPK (macro) and 0.2% chelated micro nutrients mixture (Fe 2.5%, Mn 1.0%, Zn 3.0%, Cu 1.0%, Mo 0.1% and B 0.5%), were sprayed on 15th (Vegetative phase), 30th (Reproductive phase), 45th ( Flowering and pod formation phase) days after germination improved the growth and seed parameters viz., plant height, number of branches, number of pods per plant, number of seeds per pod, filled seed % which resulted in increased seed yield in rice fallow blackgram variety, ADT3.Response of macro and micro nutrients through foliar mode revealed the lack of soil fertility resulting in poor uptake of macro and micro nutrients. Foliar application induced uniform flowering and synchronous maturity of pods with least shattering which would facilitate mechanical harvesting. Foliar application of macro and micro nutrients phenotypically altered the source-sink which greatly influenced the yield of seed, germination and seedling quality parameters

17.
Braz. j. biol ; 82: 1-9, 2022. graf, tab
Article de Anglais | LILACS, VETINDEX | ID: biblio-1468485

RÉSUMÉ

Water stress is one of the major factor restricting the growth and development of chickpea plants by inducing various morphological and physiological changes. Therefore, the present research activity was designed to improve the chickpea productivity under water stress conditions by modulating antioxidant enzyme system. Experimental treatments comprised of two chickpea genotypes i.e. Bhakhar 2011 (drought tolerant) and DUSHT (drought sensitive), two water stress levels i.e. water stress at flowering stage and water stress at flowering + pod formation + grain filling stage including well watered (control) and three exogenous application of nutrients i.e. KCl 200 ppm, MgCl2, 50 ppm and CaCl2, 10 mM including distilled water (control). Results indicated that water stress at various growth stages adversely affects the growth, yield and quality attributes of both chickpea cultivars. Exogenous application of nutrients improved the growth, yield and antioxidant enzyme activities of both chickpea genotypes even under water stress conditions. However, superior results were obtained with foliar spray of potassium chloride on Bhakhar 2011 under well-watered conditions. Similarly, foliar spray of potassium chloride on chickpea cultivar Bhakhar 2011 cultivated under stress at flowering + pod formation + grain filling stage produced significantly higher contents of superoxide dismutase, peroxidase and catalase. These results suggests that the application of potassium chloride mitigates the adverse effects of water stress and enhanced tolerance in chickpea mainly due to higher antioxidant enzymes activity, demonstrating the protective measures of plant cells in stress conditions.


O estresse hídrico é um dos principais fatores que restringem o crescimento e o desenvolvimento das plantas de grão-de-bico, induzindo várias alterações morfológicas e fisiológicas. Portanto, a presente atividade de pesquisa foi projetada para melhorar a produtividade do grão-de-bico em condições de estresse hídrico, por meio da modulação do sistema de enzimas antioxidantes. Tratamentos experimentais compostos de dois genótipos de grão-de-bico, ou seja, Bhakhar 2011 (tolerante à seca) e DUSHT (sensível à seca), dois níveis de estresse hídrico, ou seja, estresse hídrico na fase de floração e estresse hídrico na floração + formação de vagens + estágio de enchimento de grãos incluindo bem irrigado (controle) e três aplicações exógenas de nutrientes, ou seja, KCl 200 ppm, MgCl2 50 ppm e CaCl2 10 mM, incluindo água destilada (controle). Os resultados indicaram que o estresse hídrico em vários estágios de crescimento afeta negativamente os atributos de crescimento, rendimento e qualidade de ambas as cultivares de grão-de-bico. A aplicação exógena de nutrientes melhorou o crescimento, o rendimento e as atividades das enzimas antioxidantes de ambos os genótipos de grão-de-bico, mesmo em condições de estresse hídrico. No entanto, resultados superiores foram obtidos com pulverização foliar de cloreto de potássio em Bhakhar 2011, em condições bem irrigadas. Da mesma forma, a pulverização foliar de cloreto de potássio na cultivar de grão-de-bico Bhakhar 2011 cultivada sob estresse na fase de floração + formação de vagens + enchimento de grãos produziu teores significativamente maiores de superóxido dismutase, peroxidase e catalase. Esses resultados sugerem que a aplicação de cloreto de potássio atenua os efeitos adversos do estresse hídrico e aumenta a tolerância no grão-de-bico, principalmente em razão de mais atividade de enzimas antioxidantes, demonstrando as medidas protetoras das células vegetais em condições de estresse.


Sujet(s)
Cicer/anatomie et histologie , Cicer/croissance et développement , Cicer/enzymologie , Cicer/physiologie , Chlorure de potassium/administration et posologie , Déshydratation , Nutriments/administration et posologie
18.
Braz. j. biol ; 822022.
Article de Anglais | LILACS-Express | LILACS, VETINDEX | ID: biblio-1468672

RÉSUMÉ

Abstract Water stress is one of the major factor restricting the growth and development of chickpea plants by inducing various morphological and physiological changes. Therefore, the present research activity was designed to improve the chickpea productivity under water stress conditions by modulating antioxidant enzyme system. Experimental treatments comprised of two chickpea genotypes i.e. Bhakhar 2011 (drought tolerant) and DUSHT (drought sensitive), two water stress levels i.e. water stress at flowering stage and water stress at flowering + pod formation + grain filling stage including well watered (control) and three exogenous application of nutrients i.e. KCl 200 ppm, MgCl2, 50 ppm and CaCl2, 10 mM including distilled water (control). Results indicated that water stress at various growth stages adversely affects the growth, yield and quality attributes of both chickpea cultivars. Exogenous application of nutrients improved the growth, yield and antioxidant enzyme activities of both chickpea genotypes even under water stress conditions. However, superior results were obtained with foliar spray of potassium chloride on Bhakhar 2011 under well-watered conditions. Similarly, foliar spray of potassium chloride on chickpea cultivar Bhakhar 2011 cultivated under stress at flowering + pod formation + grain filling stage produced significantly higher contents of superoxide dismutase, peroxidase and catalase. These results suggests that the application of potassium chloride mitigates the adverse effects of water stress and enhanced tolerance in chickpea mainly due to higher antioxidant enzymes activity, demonstrating the protective measures of plant cells in stress conditions.


Resumo O estresse hídrico é um dos principais fatores que restringem o crescimento e o desenvolvimento das plantas de grão-de-bico, induzindo várias alterações morfológicas e fisiológicas. Portanto, a presente atividade de pesquisa foi projetada para melhorar a produtividade do grão-de-bico em condições de estresse hídrico, por meio da modulação do sistema de enzimas antioxidantes. Tratamentos experimentais compostos de dois genótipos de grão-de-bico, ou seja, Bhakhar 2011 (tolerante à seca) e DUSHT (sensível à seca), dois níveis de estresse hídrico, ou seja, estresse hídrico na fase de floração e estresse hídrico na floração + formação de vagens + estágio de enchimento de grãos incluindo bem irrigado (controle) e três aplicações exógenas de nutrientes, ou seja, KCl 200 ppm, MgCl2 50 ppm e CaCl2 10 mM, incluindo água destilada (controle). Os resultados indicaram que o estresse hídrico em vários estágios de crescimento afeta negativamente os atributos de crescimento, rendimento e qualidade de ambas as cultivares de grão-de-bico. A aplicação exógena de nutrientes melhorou o crescimento, o rendimento e as atividades das enzimas antioxidantes de ambos os genótipos de grão- de-bico, mesmo em condições de estresse hídrico. No entanto, resultados superiores foram obtidos com pulverização foliar de cloreto de potássio em Bhakhar 2011, em condições bem irrigadas. Da mesma forma, a pulverização foliar de cloreto de potássio na cultivar de grão-de-bico Bhakhar 2011 cultivada sob estresse na fase de floração + formação de vagens + enchimento de grãos produziu teores significativamente maiores de superóxido dismutase, peroxidase e catalase. Esses resultados sugerem que a aplicação de cloreto de potássio atenua os efeitos adversos do estresse hídrico e aumenta a tolerância no grão-de-bico, principalmente em razão de mais atividade de enzimas antioxidantes, demonstrando as medidas protetoras das células vegetais em condições de estresse.

19.
Braz. j. biol ; 82: e236251, 2022. tab, graf
Article de Anglais | LILACS, VETINDEX | ID: biblio-1249267

RÉSUMÉ

Water stress is one of the major factor restricting the growth and development of chickpea plants by inducing various morphological and physiological changes. Therefore, the present research activity was designed to improve the chickpea productivity under water stress conditions by modulating antioxidant enzyme system. Experimental treatments comprised of two chickpea genotypes i.e. Bhakhar 2011 (drought tolerant) and DUSHT (drought sensitive), two water stress levels i.e. water stress at flowering stage and water stress at flowering + pod formation + grain filling stage including well watered (control) and three exogenous application of nutrients i.e. KCl 200 ppm, MgCl2, 50 ppm and CaCl2, 10 mM including distilled water (control). Results indicated that water stress at various growth stages adversely affects the growth, yield and quality attributes of both chickpea cultivars. Exogenous application of nutrients improved the growth, yield and antioxidant enzyme activities of both chickpea genotypes even under water stress conditions. However, superior results were obtained with foliar spray of potassium chloride on Bhakhar 2011 under well-watered conditions. Similarly, foliar spray of potassium chloride on chickpea cultivar Bhakhar 2011 cultivated under stress at flowering + pod formation + grain filling stage produced significantly higher contents of superoxide dismutase, peroxidase and catalase. These results suggests that the application of potassium chloride mitigates the adverse effects of water stress and enhanced tolerance in chickpea mainly due to higher antioxidant enzymes activity, demonstrating the protective measures of plant cells in stress conditions.


O estresse hídrico é um dos principais fatores que restringem o crescimento e o desenvolvimento das plantas de grão-de-bico, induzindo várias alterações morfológicas e fisiológicas. Portanto, a presente atividade de pesquisa foi projetada para melhorar a produtividade do grão-de-bico em condições de estresse hídrico, por meio da modulação do sistema de enzimas antioxidantes. Tratamentos experimentais compostos de dois genótipos de grão-de-bico, ou seja, Bhakhar 2011 (tolerante à seca) e DUSHT (sensível à seca), dois níveis de estresse hídrico, ou seja, estresse hídrico na fase de floração e estresse hídrico na floração + formação de vagens + estágio de enchimento de grãos incluindo bem irrigado (controle) e três aplicações exógenas de nutrientes, ou seja, KCl 200 ppm, MgCl2 50 ppm e CaCl2 10 mM, incluindo água destilada (controle). Os resultados indicaram que o estresse hídrico em vários estágios de crescimento afeta negativamente os atributos de crescimento, rendimento e qualidade de ambas as cultivares de grão-de-bico. A aplicação exógena de nutrientes melhorou o crescimento, o rendimento e as atividades das enzimas antioxidantes de ambos os genótipos de grão- de-bico, mesmo em condições de estresse hídrico. No entanto, resultados superiores foram obtidos com pulverização foliar de cloreto de potássio em Bhakhar 2011, em condições bem irrigadas. Da mesma forma, a pulverização foliar de cloreto de potássio na cultivar de grão-de-bico Bhakhar 2011 cultivada sob estresse na fase de floração + formação de vagens + enchimento de grãos produziu teores significativamente maiores de superóxido dismutase, peroxidase e catalase. Esses resultados sugerem que a aplicação de cloreto de potássio atenua os efeitos adversos do estresse hídrico e aumenta a tolerância no grão-de-bico, principalmente em razão de mais atividade de enzimas antioxidantes, demonstrando as medidas protetoras das células vegetais em condições de estresse.


Sujet(s)
Cicer , Eau , Nutriments , Déshydratation , Sécheresses , Antioxydants
20.
Article de Anglais | IMSEAR | ID: sea-168493

RÉSUMÉ

A field experiment was conducted during Rabi season of 2012-13 at Regional Agricultural Research Station, Lam, Guntur, with an aim to find out the effect of foliar nutrition on water potential, photosynthetic rate, dry matter production and yield of mung bean under receding soil moisture conditions in split plot design with irrigation and no irrigation as main treatments and foliar sprays as sub treatments. Under receding soil moisture condition (moisture stress) KNO3 @ 1% proved superior over other foliar sprays by recording more plant height, leaf area, shoot dry weight, and photosynthetic rate by maintaining high chlorophyll content, high proline and high leaf water potential. KNO3 @ 1% gave higher yields under receding soil moisture condition compared to other foliar sprays. Under irrigated conditions urea @ 2% recorded higher yield. Among all treatments controlled (no spray) under unirrigated conditions recorded lower yields due to moisture stress and nutrient deficiency.

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