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1.
Article | IMSEAR | ID: sea-234054

ABSTRACT

Background: Elevated levels of blood urea/blood urea nitrogen in serum is considered an independent risk factor for the occurrence of cataract. Estimation of these levels can be used as a predictor for the occurrence of cataract. Methods: This was a hospital-based prospective case control study conducted in the department of ophthalmology at SKIMS MCH, Srinagar from January 2023 to June 2023. We evaluated 25 patients admitted for cataract surgery in our department for serum urea and BUN levels and compared their results with 25 age and sex-matched controls admitted for causes other than cataract. The cases with significantly elevated levels of urea were further screened for possible renal impairment using Glomerular filtration rates and urine albumin. Results: 7 out of 25 cases had elevated levels of serum urea with a mean of 44.2±16.19 mg/dl whereas all 25 patients of the control group had normal serum urea levels with a mean of 28.84±4.3 mg/dl. The mean levels of urea were significantly higher in the cases than controls with p<0.0001. 4 out of the 7 patients in the case group with elevated serum urea levels showed impaired glomerular filtration rates and clinically significant levels of urine albumin. Conclusions: The study suggested a statistically significant correlation (p<0.0001) between serum levels of urea and BUN with cataract.

2.
Article in Chinese | WPRIM | ID: wpr-1024249

ABSTRACT

Objective:To analyze the independent risk factors for pneumothorax in older adult patients with chronic obstructive pulmonary disease (COPD), construct and validate a prediction model of pneumothorax risk in patients with COPD.Methods:A total of 500 patients with COPD who received treatment at the Department of Emergency, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine from January 2018 to December 2021 were selected using the convenience sampling method and included in this study. Chest CT scan or chest X-ray film findings were used as diagnostic criteria. These patients were divided into a pneumothorax group and a control group according to whether they developed pneumothorax. Taking whether patients develop pneumothorax as a dependent variable and predictive risk factors as independent variables, univariate and multivariate logistic regression analyses of the included risk factors were performed to identify the independent influential factors for developing pneumothorax in patients with COPD. Subsequently, a prediction model for predicting the risk of pneumothorax was constructed and evaluated. A decision curve analysis was conducted to evaluate its clinical practicality.Results:Among 500 patients with COPD, 104 developed pneumothorax, with an incidence of 20.80%. Binary logistic regression analysis showed that long duration of COPD, C-reactive protein, and mechanical ventilation were independent risk factors for the development of pneumothorax in these patients. The percentage of forced expiratory volume in one second (FEV 1%), the FEV 1/forced vital capacity ratio (FEV 1/FVC), and serum albumin are protective factors for the development of pneumothorax in patients with COPD. A prediction model for the risk of developing pneumothorax was constructed. Finally, we obtained the formula: Logit( P) = 12.427 + 2.241 × COPD duration + 0.899 × smoking + 7.715 × CRP + 0.208 × mechanical ventilation history -0.514 × albumin -0.243 × FEV 1%-0.286 FEV 1/FVC. Receiver operating characteristic curve analysis results showed that the area under the curve was 0.815 and the C-Index was 0.781 (95% CI: 0.856-0.891), indicating that the constructed prediction model can better distinguish between patients with and without pneumothorax among those with COPD. Conclusion:C-reactive protein, albumin, FEV 1%, FEV 1/FVC, smoking history, and mechanical ventilation history are all risk factors for the development of pneumothorax. A prediction model has been successfully constructed based on these risk factors, which can effectively predict the risk of pneumothorax. This constructed risk prediction model provides good guidance in taking preventive treatment and nursing measures by medical staff.

3.
Article in Chinese | WPRIM | ID: wpr-1016763

ABSTRACT

Background Under the guidance of achieving carbon peaking and carbon neutrality goals, the demand for lithium-ion batteries has increased significantly. However, during the production, use, and maintenance of lithium-ion batteries, workers are inevitably exposed to various occupational hazards, and some chemicals are nephrotoxic. Objective To evaluate the kidney function and potential determinants among male workers in a lithium-ion battery-related enterprise in Shanghai. Methods The data of occupational health examination carried out by an occupational disease prevention and control institution for workers in a lithium-ion battery-related enterprise in Shanghai were collected. The workers participating pre-employment occupational health examination were treated as a control group, and the other group was recruited from those participating periodic health examination. Serum creatinine, urea nitrogen, uric acid, and renal ultrasound were used to assess the kidney function of workers. Kidney function was classified according to the reference range of kidney function indicators in Diagnostics (9th Edition, national planning textbook for high education in medicine). Binary logistic regression and generalized linear regression were used to identify potential determinants of abnormal values in kidney function indicators in workers. Results There were 6184 workers in the control group (pre-employment) with a mean age of (27.40±4.50) years. There were 3526 workers on the job with a mean age of (29.40±4.99) years and the median time of service was 2.00 (1.00, 3.42) years. The prevalence rates of high serum creatinine, high urea nitrogen, and high uric acid, and abnormal kidney ultrasound among the control group were 0.66%, 2.47%, 30.32%, and 10.12%, respectively; the indicators in the on-the-job workers were 0.96%, 3.35%, 38.25%, and 12.68%, respectively, significantly higher than those in the control group (P<0.05). After adjusting for worker age, length of service, smoking status, drinking status, hypertension, and hyperglycemia, the binary logistic regression models showed that regular smokers had a higher risk of high urea nitrogen than nonsmokers (OR=1.411, 95%CI: 1.011, 1.969). The risk of high uric acid was lower in older workers (OR=0.966, 95%CI: 0.953, 0.979), and higher in workers with more years of service (≤1 year, OR=1.295, 95%CI: 1.093, 1.534; >1-3 years, OR=1.747, 95%CI: 1.494, 2.042; >3 years, OR=1.866, 95%CI: 1.511, 2.304), hypertension (OR=1.400, 95%CI: 1.055, 1.859), and hyperglycemia (OR=1.565, 95%CI: 1.221, 2.006). Workers who were older (OR=1.038, 95%CI: 1.022, 1.054) and had longer working years (>1-3 years, OR=1.518, 95%CI: 1.201, 1.920), occasional smoking habits (OR=1.239, 95%CI: 1.039, 1.478), regular drinking habits (OR=1.875, 95%CI: 1.139, 3.087), and hypertension (OR=1.465, 95%CI: 1.075, 1.998) were at a higher risk of renal ultrasound abnormalities. The generalized linear models showed that length of service (>1-3 years, β=1.120, 95%CI: 0.360, 1.880; >3 years, β=1.451, 95%CI: 0.543, 2.358), smoking status (occasional, β=0.818, 95%CI: 0.156, 1.479; regular, β=0.841, 95%CI: 0.066, 1.616), and hypertension (β=2.742, 95%CI: 1.390, 4.094) were the influencing factors of serum creatinine concentration in the workers. Age (β=0.014, 95%CI: 0.009, 0.019) and length of service (>1-3 years, β=0.079, 95%CI: 0.012, 0.146) were the influencing factors of urea nitrogen. Age (β=−1.759, 95%CI: −2.288, −1.231), length of service (≤1 year, β=10.676, 95%CI: 4.035, 17.316; >1-3 years, β=26.117, 95%CI: 19.962, 32.272; >3 years, β=34.558, 95%CI: 26.116, 43.001), hypertension (β=23.162, 95%CI: 11.617, 34.707), and hyperglycemia (β=15.017, 95%CI: 4.853, 25.180) were the influencing factors of uric acid. Conclusion The prevalence of abnormal kidney function of workers in selected lithium-ion battery-related enterprise is varied by age, length of service, smoking status, drinking status, hypertension, and hyperglycemia. There may be a trend that the longer the time working in a lithium-ion battery-related enterprise, the worse the workers' kidney function. Therefore, the enterprise should pay attention to the possible reasons for their changes and take targeted interventions.

4.
Article in Chinese | WPRIM | ID: wpr-1017036

ABSTRACT

Objective To calculate the absorbed doses and conversion coefficients of various organs in humans after oral administration of urea-14C, and to provide a convenient method for evaluating the internal radiation dose caused by ingestion of urea-14C in Chinese population. Methods The Chinese reference human voxel model was imported into the FLUKA software to simulate the absorbed doses to organs under internal exposure to 14C, and to obtain the dose conversion coefficients for oral administration of urea-14C. Results The absorbed dose conversion coefficients for the stomach, colon, bladder, heart, and muscles were 0.029, 0.029, 0.32 (0.24), 0.028, and 0.029 mGy/MBq in negative cases, and 0.079, 0.078, 0.18 (0.15), 0.076, and 0.080 mGy/MBq in positive cases. The committed effective dose coefficients were 0.041 (0.037) mSv/MBq in negative cases and 0.082 (0.081) mSv/MBq in positive cases. Conclusion The dose conversion coefficients obtained in this study can provide important parameters for evaluating the absorbed dose to Chinese population after oral administration of urea-14C.

5.
Article | IMSEAR | ID: sea-230908

ABSTRACT

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.

6.
Article | IMSEAR | ID: sea-230872

ABSTRACT

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

7.
Article | IMSEAR | ID: sea-230801

ABSTRACT

Wheat (Triticum aestivum) is second most important staple crop in India after rice. Weeds have emerged as the major biotic stress in wheat. Post-emergence herbicidal combinations are used widely to control the complex weed flora in wheat crops. A field experiment was carried out to study the “Effects of herbicides and nano urea mixture on weeds, yield attributes and yield of wheat (Triticum aestivum)”. The experiment was performed in randomized blocked design with three replications and fourteen treatments in Rabi season 2022-23 at Agronomy Research Farm, CCS Haryana Agricultural University, Hisar. Significantly minimum weed count (1.52 m-2) and dry weight (1.49 g m-2) and maximum weed control efficiency (88.6%) of Phalaris minor and broadleaved weeds (87%) was recorded with application of clodinafop + metribuzin 60 + 210 g ha-1 with nano urea 3 ml L-1 followed by clodinafop + metribuzin 60 + 210 g ha-1 at 90 DAS. In case of yield attributes i.e. number of effective tillers per meter row length (92.5), spike length (11.4 cm), number of grains spike-1 (55.9) and 1000-grain weight (43.8) were higher with application of clodinafop + metribuzin 60 + 210 g ha-1 with nano urea 3 ml L-1 followed by clodinafop + metribuzin 60 + 210 g ha-1. Grain yield (5876 kg ha-1) and B:C (1.94) was recorded higher with application of clodinafop + metribuzin 60 + 210 g ha-1 with nano urea 3 ml L-1 followed by clodinafop + metribuzin 60 + 210 g ha-1 which was significantly higher than weedy check but at par with the weed free treatment.

8.
Article | IMSEAR | ID: sea-230793

ABSTRACT

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.

9.
Article | IMSEAR | ID: sea-230774

ABSTRACT

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).

10.
An. Fac. Med. (Perú) ; 84(4)dic. 2023.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1533582

ABSTRACT

El síndrome de antiduresis inadecuada (SADI) se produce por una alteración en el eje hipotálamo-neurohipófisis, por una falla en la respuesta regulatoria osmótica o por factores no osmóticos, con complicaciones en relación directa al grado de hiponatremia e impacto en la calidad de vida y mortalidad del paciente. El tratamiento consiste en la normalización de la natremia, y la búsqueda de la etiología. Presentamos el caso de un paciente adulto con el diagnóstico de SADI idiopático y trastorno neurocognitivo asociado, con respuesta favorable al tratamiento con urea.


Syndrome of Inappropriate Antidiuresis (SIAD), is produced by an alteration in the hypothalamus-neurohypophysis axis due to a failure in the osmotic regulatory response or non-osmotic factors, with complications directly related to the degree of hyponatremia and impact on quality of life and patient mortality. Management consists of normalization of natremia, and the search for the underlying etiology. We present the case of an adult patient diagnosed with idiopathic SIAD and associated neurocognitive disorder, with a favorable response to treatment with urea.

11.
Article | IMSEAR | ID: sea-230709

ABSTRACT

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).

12.
Article | IMSEAR | ID: sea-230594

ABSTRACT

Aims: Foliar application of nano nitrogen is aimed to reduce the soil application of conventional nitrogen. Nano fertilizers enhance crop growth, yield and quality while enhancing the faster nutrient uptake and reducing costs. They provide precise nutrient management, matching crop growth stage and offer increased surface area for metabolic reactions. This boosts photosynthesis, leading to higher dry matter production and crop yield. Foliar application of nano urea (liquid) at flowering, boll initiation and boll development stages in cotton fulfills the nitrogen requirement and reflects higher crop productivity and quality. Higher productivity of crops in sustainable manner could be achieved applying appropriate combination of conventional fertilizer and nano fertilizers. Study Design: The experiment was laid out in split design with three replications.Place and Duration of Study: A field experiment was conducted in shallow black soils at Main Agricultural Research Station, Raichur, during kharif 2022.Methodology: There were fifteen treatment combinations, consisting of different doses of RDN (50 % N, 75 % N and 100 % N) with different concentrations of nano urea sprayed at 90, 100 DAS and 135 DAS for US-7067 BG-? hybrid of Bt cotton.Results: Application of 100% RDN has recorded significantly higher plant height, sympodial branches plant-1 and total dry matter accumulation (176.9 cm, 27.1 and 430.31g plant-1, respectively) followed by 75 % RDN (168 cm, 26.7 and 426.91 g plant-1, respectively) which found on par with each other. It also produced higher number of bolls plant-1 (50.3), boll weight (5.81 g) and seed cotton yield (3388 kg ha-1) followed by 75 % RDN (50.2, 5.36 g and 3376 kg ha-1, respectively) which found comparable with each other. Foliar application of nano urea @ 0.6 per cent each at 90, 100 and 135 DAS has recorded significantly higher plant height (180.8 cm), sympodial branches plant-1 (28.5), total dry matter accumulation (429.42 g plant-1), number of bolls plant-1 (52.2), boll weight (5.93 g) and seed cotton yield (3485 kg ha-1) followed by foliar spray of nano urea @ 0.4 per cent each at 90, 100 and 135 DAS (173.3 cm, 28, 428.52 g plant-1, 51.8, 5.67 g and 3465 kg ha-1, respectively) which found on par with each other. Similar trend was recorded with regard to nutrient uptake by cotton.Conclusion: Foliar application of nano urea reduced the dosage of conventional nitrogen by 25 per cent. There was linear increase in seed cotton yield (kg ha-1) with increasing levels of nitrogen levels.

13.
Article | IMSEAR | ID: sea-230578

ABSTRACT

A field experiment was conducted at Agricultural and Horticultural Research Station, Bavikere, KSNUAHS, Shivamogga, India during Late Kharif 2022 to evaluate the effect of nano and conventional urea on growth and yield of ragi. The experiment was laid out in RCBD with eleven treatments replicated thrice. The treatments comprised of absolute control (T1), recommended dose of fertilizer (T2), 50 per cent RDN + two sprays of 0.4 per cent nano urea fertilizer at 30 & 45 DAT (T3), 75 per cent RDN + one spray of 0.4 per cent nano urea fertilizer at 30 DAT (T4), 75 percent RDN + two sprays of 0.4 percent nano urea fertilizer at 30 & 45 DAT (T5), 100 per cent RDN + one spray of 0.4 percent nano urea fertilizer at 30 DAT (T6), 50 percent RDN + two sprays of 2 per cent urea fertilizer at 30 & 45 DAT (T7), 75 per cent RDN + one spray of 2 per cent urea fertilizer at 30 DAT (T8), 75 percent RDN + two sprays of 2 percent urea fertilizer at 30 & 45 DAT (T9), 100 per cent RDN + one spray of 2 per cent urea fertilizer at 30 DAT (T10), four sprays of 0.4 per cent nano urea fertilizer at 15, 30, 45 & 60 DAT (T11). The results revealed that the application of 100 per cent RDN + one spray of 0.4 per cent nano urea fertilizer at 30 DAT (T6) recorded higher plant height (94.13 cm), number of tillers hill-1 (8.85), number of earheads per hill (7.86), finger length (8.46), grain yield (3812 kg ha-1), straw yield (6453 kg ha-1) and harvest index (37.13%), which was statistically on par with the T10 and T5. Treatment T6 produced 9.32 per cent higher grain yield compared to T2.

14.
Article | IMSEAR | ID: sea-230365

ABSTRACT

A field study was conducted during Rabi season 2022at the Horticultural Research Farm, Mangalayatan University, Jabalpur to study the effect of foliar application of nano urea and urea on growth and yield of onion. The experiment was laid out in RBD with three replications and consisted of 9 treatments viz., T1-100% RDF (100:50:50 kg NPK ha1), T2-75:50:50 kg NPK ha-1 + foliar spray of 0.4% nano urea on 30 and 60 DAT, T350:50:50 kg NPK ha-1 + foliar spray of 0.4% nano urea on 30 and 60 DAT, T4-75:50:50 kg NPK ha-1 + foliar spray of 0.4% nano urea on 30 DAT, T5-50:50:50 kg NPK ha-1 + foliar spray of 0.4% nano urea on 30 DAT, T6-75:50:50 kg NPK ha-1 + foliar spray of 0.5% urea on 30 and 60 DAT, T7-50:50:50 kg NPK ha-1 + foliar spray of 0.5% urea on 30 and 60 DAT, T8-75:50:50 kg NPK ha-1 + foliar spray of 1% urea on 30 and 60 DAT, and T9-50:50:50 kg NPK ha-1 + foliar spray of 1% urea on 30 and 60 DAT. Each treatment showed their significant effects on the recorded growth and yield parameters. Among all the treatments, treatment T2 with 25% reduced nitrogen application plus foliar spray of 0.4% nano urea on 30 and 60 DAT recorded maximum plant height on 90 DAT (57.82 cm),number of leaves (9.13), equatorial diameter (5.51 cm), polar diameter (5.17), average bulb weight (69.56 g), bulb yield (336.40 kg) than other treatments.

15.
Article | IMSEAR | ID: sea-230272

ABSTRACT

maize requires large amounts of nutrients for appropriate growth, production and yield, it is regarded as a crop that is nutrient-exhaustive. The nutrient requirements of the maize crop can be maintained with the use of effective nutrient management techniques. Nanotechnology is gradually making its way from the experimental to the useful realms, like the development of slow-release fertilizers, conditional release of pesticides and herbicides, on the basis of nanotechnology has become critically important for promoting the development of environment friendly and sustainable agriculture. Traditional fertilisation techniques may undergo a revolution thanks to the inherent features of nanoparticles, which enable improved nutrient absorption, precision distribution and greater bioavailability. The results, as evidenced by multiple studies, indicate significant improvements in growth parameters, seed production, and overall plant health.

16.
Article | IMSEAR | ID: sea-230226

ABSTRACT

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.

17.
Article | IMSEAR | ID: sea-230200

ABSTRACT

The greater challenges of the 21st century is affordably meeting nutritious food demand for a world population which were expected to surpass 9.6 billion people at middle of the century and at the same time sustaining a quality and quantity of a natural resources and biodiversity. Coming to the reality a need of urgent attention for technological innovations in a sector of food production ultimately leading for “greater protein and energy production per unit of resource input”. Therefore, a field experimented was conducted at Chamelti Agriculture Farm, MS Swaminathan School of Agriculture, Shoolini University of Biotechnology and Management Sciences, Solan during kharif season of 2022 to study the effect of row spacing and nitrogen sources on growth, yield and economics of babycorn. The results reveals that significantly higher growth and yield attributing characters were observed with wider spacing of (R3) 60 cm and (N4) nano urea. However, higher yield and economic returns were significantly higher with row spacing of (R2) 45 cm along with (N4) nano urea. On the basis of B: C ratio, row spacing of (R2) 45 cm along with (N4) nano urea was found to be remunerative for baby corn under Mid hills of Himachal Pradesh.

18.
Article | IMSEAR | ID: sea-230161

ABSTRACT

India is the second- largest producer of rice in the world, with 43.86 million hectares of land under rice cultivation where the crop residue generated is more than 160 million tons per year. The rice straw management is a challenging task in rice-producing regions. So, there is a need for an effective waste disposal technology for converting this waste into some valuable form. Keeping this in view,the present investigation was undertaken during the winter (Rabi) season of 2021-22 and 2022-23 at the Research Farm of the KVK Jagdishpur, Sonipat, Department of Vegetable Science, CCS Haryana Agricultural University, Hisar, Haryana to evaluate the effect of rice straw management on the growth attributes of potato.The seed material of potatocv. “KufriKhyati” was grown with twelve different rice straw treatment combinations. The experimental results revealed that the treatment T1 (Removing of straw + Planting) which was at par with treatment T9 (Urea (50kg/ha) + WD (25lt/ha) + FYM (1ton/ha) + Mixing of chopped straw + Planting) performed superiorly over the other treatments with significantly higher values for growth attributes viz., plant emergence (%), plant height (cm), number of stems per hill and number of leaves per hill.

19.
Article | IMSEAR | ID: sea-230139

ABSTRACT

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.

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Article | IMSEAR | ID: sea-229948

ABSTRACT

Aims: Foliar nutrition is aimed to eliminate the problems of fixation and immobilization of nutrients. Hence, foliar nutrition is being recognized as a significant way of fertilizing modern agriculture, especially under rainfed conditions. Nano fertilizers because of smaller size and higher surface area are efficient as compared to conventional and produce better results when used in combined form.Study Design: The experiment was laid out in Randomized complete block design with three replications.Place and Duration of Study: A field experiment was conducted in medium black soils at Agricultural Research Station, Hagari, during Kharif 2022.Methodology: There were ten treatment combinations, consisting of different doses of RDF (50 % RNP, 75 % RNP and 100 % RDF and absolute control) with different doses of nano urea and Dap sprayed at 30 and 45 DAS for CSH-16 hybrid of sorghum.Results: Application of 75% RNP as basal + nano urea & DAP spray @ 1.5 ml l-1 each at 30 and 45 DAS recorded significantly higher number of leaves, leaf area and leaf area index. It also produced higher earhead length (35.9 cm), number of grains earhead-1 (2207), grain weight (57 g plant-1) and test weight (29.3 g 1000 grains-1). Nutrient content and uptake also showed higher values for the same treatment along with the nutrient use efficiency indices. Whereas, significant reduction in soil microbes was noticed by the application of treatment.Conclusion: Combined application of conventional and nano fertilizers helped to increase growth, growth attributes like number of leaves, leaf area, leaf area index, yield attributes, nutrient content, nutrient uptake and nutrient use efficiency of sorghum.

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