ABSTRACT
A field experiment was conducted during kharif 2022 at College of Agriculture, Kalaburagi to evaluate the effect of dates of sowing and plant geometry on yield and economics of ricebean. The experiment was laid out in Split plot design with three replications. The experiment was comprised of two factors viz., dates of sowing in main plot with four dates i.e. second fortnight of July, first fortnight of August, second fortnight of August and first fortnight of September and spacing in sub plot with three plant geometry i.e. 30 cm x 10 cm, 45 cm x 10 cm and 60 cm x 10 cm. The results of the experiment indicated that ricebean sown during first fortnight of August recorded significantly higher seed yield and stover yield (1016 kg ha-1 and 2574 kg ha-1, respectively) besides higher gross returns (?. 63547 ha-1), net returns (?. 39300 ha-1) and Benefit Cost ratio (2.62). Among different plant geometry, 30 cm x 10 cm recorded significantly higher seed and stover yield (1009 kg ha-1 and 2302 kg ha-1, respectively) besides higher gross returns (?. 62852 ha-1), net returns (? 38205 ha-1) and BC ratio (2.55). Further, it was onpar with 45 cm x 10 cm plant geometry (989 kg ha-1, 2253 kg ha-1, ?. 61583 ha-1, ?. 37355 ha-1 & 2.54, seed yield, stover yield, gross returns, net returns & BC ratio, respectively). The interaction between dates of sowing and plant geometry on yield attributes, yield and economics was found non significant.
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Crops are facing heat stress because of rapid climate change caused by global warming. We examined these issues in sunflower by exposing the plants growing with mean maximum temperature of 32.2oC (sowing to flowering) and 36.1oC (flowering to harvest) at normal temperature (S1) and 35.3oC (sowing to flowering) and 38.3 oC (flowering to harvest) at high temperatures (S2) by staggered sowings. Antioxidative responses of sunflower were also explored by studying the Superoxide dismutase, Catalase, Peroxidises and Ascorbate peroxidise activities. A significant increase was observed in antioxidant enzyme activities under high temperature stress. The final oil composition proved to be sensitive to the timing of heat stress and reduced (13%) by high temperatures. Some innovative steps should be taken on an emergency basis to prepare plants for such stressful conditions.
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Aim: To determine the optimum date of sowing to realize higher grain yield in rabi rice.Study Design: Split plot.Place and Duration of Study: Krishi Vigyan Kendra, Rudrur, Nizamabad during rabi, 2022.Methodology: The experiment consisted of a total of fifteen treatments which were laid out in split plot design with three replications. Treatments included were five dates of sowing in the main plot M1-20th November, M2-1st December, M3-10th December, M4-20th December, and M5-30th December and three treatments of varieties in subplots S1-JGL 24423 (long slender variety), S2-Ganga Kaveri (medium slender variety) and S3-RNR 15048 (short slender variety) randomly placed in subplots of the main plot.Results: Maximum plant height (100.3 cm), number of tillers m-2 (432), dry matter accumulation (15869 kg ha-1), grain yield (7219 kg ha-1), straw yield(8387 kg ha-1) and HI (46.1) was noticed in crop Sownon 30thDecember. Significantly maximum number of tillers m-2, dry matter accumulation (14263 kg ha-1), grain yield (6127 kg ha-1), straw yield (8650 kg ha-1) was observed in S2-Ganga Kaveriwhile significantly higher plant height (100.6 cm) and HI (45.0) was found in S3-RNR 15048. Lowest height was recorded in S2-Ganga Kaveri (92.6 cm), and above parameters were recorded lowest in crop sown on 20th November, while lowest number of tillers m-2and straw yield (8122 kg ha-1) was observed in crop sown on 1st December.Significantlyless number of tillers m-2 (326), dry matter accumulation (13981 kg ha-1), grain yield (6166 kg ha-1), straw yield (7526 kg ha-1) was recorded in S3-RNR 15048, while lowest HI (43.9) was recorded in S1-JGL 24423.Conclusion: Crop sown on 30thDecember revealed better performance in terms of grain yield under the present study during Rabi conditions. Among varieties, Ganga Kaveri (S2) performed better in terms of grain yield.
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Aims: To identify the optimum sowing time and suitable varieties of soybean for profitable cultivation during the off-season in the Northern Telangana Agroclimatic zone of Telangana state in India.Study Design: Strip plot design with three replications.Place and Duration of Study: The Regional Sugarcane and Rice Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Rudrur, Nizamabad District, Telangana state, India, between October 2022 and June 2023.Methodology: The field experiment was conducted in medium clay loam soil under irrigated condition. The experiment was laid out in strip plot design with three varieties viz., JS 335 (V1), ASB 22 (V2) and KDS 726 (V3) as horizontal strips and nine dates of sowings viz., 3 Oct (D1), 19 Oct (D2), 3 Nov (D3), 19 Nov (D4), 3 Dec (D5) 19 Dec (D6), 3 Jan (D7), 19 Jan (D8) and 3 Feb (D9) as vertical strips, replicated thrice. The seeds were sown by dibbling at 5 cm apart within the row and rows were space at 45 cm apart. Standard recommended package of practice of kharif season suggested by PJTSAU was followed. The data on growth yield attributes was recorded on selected 5 plant, averaged/ plant and grain yield was recorded from net plot, converted to one hectare and analyzed statistically using OP Stat.Results: The results of the experiment revealed that, the cv. KDS 726 recorded the maximum plant height (35.2 cm) and biomass accumulation (8.93 g plant-1) which was significantly more over the cv. JS 335 and cv. ASB 22 in 3 Nov and 19 Oct sowings, respectively. The cultivars the cv. JS 335 (V1) recorded more number of pods over cv. ASB 22 (V2) and cv. KDS 726 (V3) in 19 Oct (D2), 3 Nov (D3), 19 Nov (D4), 3 Dec (D5) and 3 Jan (D7) sowings. The cv. KDS 726 (V3) was found superior in terms of seeds pod -1 (3.0) which was comparable to cv. JS 335 (V1) and significantly more over cv. ASB 22 (V2) when it was sown on 19 Oct (D2). The cv. KDS 726 (V3) recorded significantly more test weight (g) over cv. JS 335 (V1) and cv. ASB 22 (V2) from 19 Oct (D2) to 3 Jan (D7) sowings. The cv. ASB 22 sown on 3 Oct produced significantly more seed yield (753 kg ha-1) and haulm yield (1599 kg ha-1) over cv. JS 335 and cv. (KDS 726). Conclusion: The soybean cv. ASB 22 with sowing first week of Oct was found to be suitable for cultivation during the off season.
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A field experiment was conducted in kharif season 2020 to study the effect of sowing time and row spacing on growth, yield and agro-climatic indices of Cotton at Research Farm, Department of Agricultural Meteorology, CCS Haryana Agricultural University, Hisar. The experiment was performed in split-plot design and replicated thrice. The experiment included nine treatment combinations with three sowing dates and row spacings. Among different sowing times, cotton sown on 19th April had significantly higher plant height (176.3 cm), dry matter accumulation (453.39 g plant-1), LAI (1.92), GDD (Growing Degree Days), HTU (Heliothermal Units), PTU (Photothermal Units) and seed cotton yield (3057 kg ha-1) in comparison to sowing in May i.e. May 8th and May 28th. Among various row spacings, cotton planted with a row spacing of 67.5 cm x 60 cm produced significantly higher seed cotton (2657 kg ha-1) and plant height (156.40 cm), although growth parameters i.e. LAI (2.26) and dry matter accumulation (397.92 g plant-1) alongwith Agro-climatic indices (GDD, HTU, PTU) were observed to be greater with a row spacing of 100 x 60 cm.
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A field experiment was performed to study the effect of different sowing times and varieties on agroclimatic indices, phenology and growth of clusterbean at CCS Haryana Agricultural University, Hisar (Haryana). Experiment was laid out in factorial randomized block design with three replications. Treatments consists of two factors i.e. sowing time and varieties. Three clusterbean varieties i.e. HG 365 (V1), HG 563 (V2) and HG 2-20 (V3) with each sown at three different dates of sowing i.e first (D1), third (D2) and fourth (D3) week of July. Clusterbean variety HG 563(V2), sown in first week of July (D1) resulted in significantly higher accumulation of agroclimatic indices i.e. growing degree days, photo thermal units, heliothermal units and heat use efficiency because the early sown crop had a fully developed normal reproductive phase and took longer time to attain maturity. Similarly, more number of days were taken for emergence, days to 50% flowering, days to 50% pod formation and days to maturity in variety HG 563, sown in first week of July. Significantly higher leaf area index and dry matter accumulation were observed in HG 563 sown on 1st week of July than rest of the varieties and date of sowings.
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A field experiment was conducted during Rabi season of 2022-2023 on the topic entitled “Study On Micro-Climate And Its Effect On Growth And Yield Of Mustard Crop Under Prayagraj Conditions” at field of collage of forestry in Prayagraj district of utter Pradesh. Keeping in this view experiment was conducted in Factorial RBD with three replications having two factors. The first factor comprised of three DOS (170ct. 3Nov. and 17 Nov.) whereas the second factor consisted of Four Indian mustard Cultivar viz: Jhalak, Kala Sona, Sriram, and Ratna Results showed that both dates and varieties 17 oct and Ratna were superior as compared to rest of treatment max. yield observed. However, the highest growth attributes Like plant height, number of leaves, no of branches yield, and yield attributes like No. of silique (cm) per plant, test weight, seed yield (q/ha) grain yield, dry matter, and length of siliqua was recorded under 17 Oct. growing crop Ratna variety, the Lowest yield and growth recorded under date 17 Nov. growing crop Jhalak followed by 3 Nov. growing Crop Jhalak.
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The present study was conducted to assess the incidence of defoliator pests of groundnut in three different staggered sowings. The experiment was laid with three treatments and seven replications which was carried out at RARS (Regional Agricultural Research Station), Palem, Nagarkurnool district, Telangana state which is having hot and dry climate. The data has been correlated with various weather parameters, including Maximum temperature, Maximum temperature, RH-I and RH-II. The variety K-6 was grown in three staggered sowings (D1: 1st Oct; D2: 15th Oct; D3: 1st Nov). There was a less population of leaf miner during D1 the correlation studies revealed that tobacco caterpillar showed a non-significant negative correlation with the Tmax ºC (r= -0.233) and a significant positive correlation with Tmin ºC (r= 0.370) and RH-? (r=0.640). whereas gram caterpillar showed a positive significant correlation to Tmax (r= 0.256) and Tmin (r= 0.097) and a negative significant correlation towards RH-? (r= -0.186) and RH-? (r= -0.501).
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In Himachal Pradesh, farmers typically possess small land holdings where machinery isn't practical for various sowing techniques, limiting them to broadcasting. Regarding nitrogen, it facilitates more vegetative growth by enhancing the photosynthetic rate. The higher the nitrogen content, the greater the vegetative growth potential. Therefore, present investigation titled “Effect of Sowing Methods and Nitrogen Levels on Growth, Yield and Economics of Oats (Avena sativa L.) under Mid-hills of Himachal Pradesh, India” was conducted during rabi season of 2022-23 at Chamelti Agriculture Farm, MS Swaminathan School of Agriculture, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh. The field experiment was laid out in Split Plot Design comprising twelve treatments with three replications. The experiment consists of three sowing methods in main plot i.e., (S1) Broadcasting, (S2) Line sowing and (S3) Crisscross and four levels of nitrogen N0 (0 kg ha-1), N1 (75 kg ha-1), N2 (100 kg ha-1) and N3 (125 kg ha-1) as sub plot. OL 12 variety of oats was used for sowing. Sowing methods and nitrogen levels were done as per treatment. Other crop management practices were followed as per the recommendation of the area. Results indicated that among the sowing methods, (S3) crisscross, recorded significantly higher growth and yield, over line sowing and broadcasting which was on par with (S2) line sowing over the rest of the treatments except for grain, straw and biological yield. In case of nitrogen levels, (N3) application of 125 kg N ha-1 recorded significantly higher growth and yield of oats, over rest of the nitrogen levels and was on par with 100 kg N ha-1. Economically, (S3) crisscross sowing with application of (N3) 125 kg N ha-1 resulted in higher gross returns, net returns and B: C ratio under Mid Hills of Himachal Pradesh.
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A field study was conducted in the 2019 kharif season at the Agronomy Instructional Farm, SDAU, SKNagar, Gujarat, India. To investigate that the sowing time and spacing influenced yield, quality and economics of Bt cotton (Gossypium hirsutum L.) in loamy sand soil. Twelve treatment combinations were examined, involving three sowing times (T1: 3rd week of May, T2: 1st week of June, T3: 3rd week of June) and four plant spacings (S1: 90 cm × 60 cm, S2: 90 cm × 45 cm, S3: 60 cm × 60 cm, S4: 60 cm × 45 cm). Four replications of a split plot design were used for the experiment. The third week of May was consistently the best time to sow cotton, according to the results, producing the maximum yields of seed cotton and stalk cotton. The quantity of monopodial branches/plant, harvest index and plant population as well as quality parameters such as oil content and ginning percentage were not significantly impacted by sowing time. The 3rd week of May sowing also yielded the highest benefit cost ratio and net realization. In terms of plant spacing, the spacing of 60 cm × 45 cm promoted highest plant population, taller plants and increased yield attributes like the bolls/plant, boll weight and seed cotton yield/plant. The highest seed cotton yield and stalk yield were achieved with this spacing. Harvest index and quality parameters were unaffected by plant spacing. The narrow spacing of 60 cm × 45 cm also resulted in the highest benefit cost ratio and net realization. The interaction effect between sowing time and plant spacing did not significantly influence growth, yield, yield attributes and quality parameters of Bt cotton.
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Wheat is an important cereal grain crop and is staple to millions. Weeds are the major constraint that lower the wheat yield. The knowledge of weeds under different sowing dates and Irrigation can assist in controlling weeds. A field experiment was conducted during the rabi season of 2020-21 at Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, M.P. to study the influence of irrigation scheduling on weeds at different sowing dates in wheat. The experiment was laid out in split-plot design with three replications. The main plot consisted of three sowing dates, i.e., 3rd December, 18th December and 2nd January and four Irrigation Water/Cumulative Pan Evaporation (IW/CPE) based irrigation scheduling, 1.0, 0.9, 0.8 and 0.7 in the sub-plots. The results revealed that lowest weed density and dry weight were observed in 2nd January sown date, as compared to 3rd December and 18th December sown date. Among the irrigation schedules, 0.7 IW/CPE observed lowest weed density and dry weight than 1.0, 0.9, 0.8 IW/CPE ratio. 3rd December sown date exhibited highest grain yield (4637 kg ha-1) and straw yield (6788 kg ha-1) than 18th December and 2nd January sown date. Among the irrigation schedules, 1.0 IW/CPE ratio exhibited maximum grain yield (4510 kg ha-1) than 0.9, 0.8 and 0.7 IW/CPE ratio. The results of the study concludes that sowing dates and irrigation schedules had crucial role for controlling weeds.
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The present experiment was carried out at All India Coordinated Research Project on safflower, College of Agriculture, Indore, (M.P.) during rabi season 2015-16 with the objective to test the effect of different sowing dates and cultivars on growth and yield attributes of safflower. The results showed that the cultivar A-1 accumulated maximum dry matter at 30 DAS, 60 DAS, 90 DAS and at harvest as well as took minimum number of days (86.58) for flower initiation, for 50% flowering (93.17) and for 100% flowering (99.67) as compared to other cultivars. While maximum plant height (125.54 cm), number of primary branches (10.33 plant-1) were recorded in safflower cultivar NARI-6 followed by NARI-57 at harvest. It was observed that majority of secondary branches (18.84) emerged under 1st November sowing followed by 15th November sowing. The maximum CGR and RGR received by A-1 which was significantly superior to other cultivars at up to 30 DAS, 30-60 DAS 60-90 DAS and 90 DAS-at harvest compared to other cultivar. It is concluded that cultivar A-1 and NARI-6, and 1st November sowing performed better in terms of above parameters and recommended for cultivation.
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The field experiment was titled “Effect of dates of sowing on growth and yield of Chickpea varieties” was conducted during rabi 2022-23, at Crop Research Farm, Department of Agronomy, SHUATS, Prayagraj (UP). The soil of the experimental plot was sandy loam in texture. The experiment consists of three varieties (Himmat, Shulabh-45 and Chirag) and three different dates of sowing November 5th, November 15th and November 25th including control i.e., blanket application of 20-60-20 kg/ha of NPK (farmer's practice) which were replicated thrice. The experiment was laid out in Randomized Block Design with ten treatments viz., T1: Himmat + November 5, T2: Himmat + November 15, T3: Himmat + November 25, T4: Shulabh-45 + November 5, T5: Shulabh-45 + November 15, T6: Shulabh-45 + November 25, T7: Chirag + November 5, T8: Chirag + November 15, T9: Chirag + November 25, and control plot. The results of the experiment concluded that the variety Shulabh-45 with the date of sowing on November 25th significantly increased the growth parameters viz., plant height (45.54 cm), Number of nodules per plant (31.87), Plant dry weight (20.45 g/plant), and yield parameters viz., pods per plant (35.53), seeds per pod (1.35), seed yield (3.37 t/ha) and stover yield (4.90 t/ha). This treatment also showed its positive effect on economics viz., gross returns (1,71,870 INR/ha), net returns (1,19,475 INR/ha), B:C (2.28).
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The experiment was conducted with ten genotypes of chickpea (Cicer arietinum L.) viz ICCV 88503, ICCV 92944, HC- 1, HC-3, HC-5, H12-64, H13-01, H13-02, H14-01 and H14-04 for three dates of sowing i.e 15th October, 15thNovember and 15thDecember at the field in randomized block design during Rabi season of 2017-18 and 2018-19 at Pulses Section, Chaudhary Charan Singh Haryana Agricultural University, Hisar to observe the effect of sowing dates on vegetative and reproductive growth rate of chickpea genotypes at different intervals i.e 30, 60, 90, and 120 DAS with their correlations to seed yield. The dry weight of leaves, stem, pods, plant height, crop growth rate, relative growth rate and pollen viability were minimum in 15thDecember sowing and maximum in 15thOctober sowing at all intervals. Among genotypes, maximum dry matter and growth rate were observed in H12-64 and H13-01 while minimum were found in H14-04. Seed yield exhibited significant positive correlation with all traits in 15th October and 15th November sowing while non-significant was on 15th December sowing.
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The present study aimed to investigate the influence of Dates of sowing and Spacing on Growth and Yield of Sorghum (Sorghum bicolor L.). A field experiment was carried out during Zaid season of 2022 at the Crop Research Farm, Department of Agronomy, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj (U.P.) India. The treatments consist of Dates of sowing 1stfortnight June,2ndfortnight June,1stfortnight July and Spacing of S1- 20×15cm, S2- 40×15cm, S3- 60×15cm. There were 10 treatments each replicated thrice. The soil of experimental plot was sandy loamy in texture, nearly neutral in soil reaction (pH 7.8), low in organic carbon (0.35%) available N (163.42 kg/ha), available P (21.96 kg/ha) and available K (256.48 kg/ha). Results revealed that the higher plant height (207.41cm), higher plant dry weight (94.86 g/plant), higher number of Grains/ear head (1588.30), higher Test weight (14.93 gm), and higher Grain yield (5.57 t/ha) yield were significantly influenced with sowing time of 2ndfortnight June along with the spacing 40×15cm.
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A field experiment to study the impact of sowing dates on Rice leaf folder in direct seeded rice was conducted at Agricultural College Farm, Bapatla during kharif, 2021. Early planted rice crop had lower pest than later transplanted rice. Various dates have a significant impact on the occurrence of biotic stress, particularly insect pests. To identify suitable plating dates to minimize the leaf folder infestation in paddy the following experiment was conducted. Sowing was done at four different dates with 10 days interval which were taken as treatments each replicated with five times and the data has also been correlated with light trap data. The mean per cent damage ranged from 9.44 to 16.64 %. Highest infestation (16.64 %) was observed in last date of sowing and least damage (9.44 %) was observed in first date of sowing. Correlation analysis of light trap catch data shown a positive correlation with morning (r = 0.373) and evening (r = 0.186) relative humidity while a negative correlation with maximum (r = - 0.182), and minimum (r = - 0.017) temperatures and rainfall (r= - 0.154). Multiple Linear Regression (MLR) of trapped adult number and climatic conditions at different sowing dates revealed that weather parameters contributed to the variation in moth number trapped in light trap by 35.4 per cent in first date of sowing, 42.2 per cent in second date of sowing, 59.6 per cent in third date of sowing, and 50.7 per cent in fourth date of sowing. Yield ranged from 3632 kg ha-1 in last date of sowing to 5156 kg ha-1 in first date of sowing.
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A field experiment was conducted during the Rabi season in 2022-23 at vegetable research farm, Department of Horticulture, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology & Sciences, Prayagraj (UP). The experiment consisted of nine treatments combinations with three plants spacing viz. (i) 30 x 45cm, (ii) 45 x 60cm and (iii) 45 x 45cm and three levels of sowing date viz. (i) November 5th 2022, (ii) November 12th 2022, (iii) November 19th 2022, were included in the study in Randomized Block Design with three replications. The growth, yield and quality contributing all characters were significantly influenced by the treatments. The highest plant height, number of leaves, weight of head per plant, chlorophyll content and length of outer leaves (cm) as recorded in T6 (D2S3) (plants sowing November 12th 2022 with spacing 45 x 45cm) followed by T3 (D1S3) and lowest in T7 (D3S1). The maximum weight of head per m2, yield per plot (79.6kg) and yield per hectare (89.1t ha) were recorded -1 in T4 (D2S1) (plants sowing November 12th 2022 with spacing 30 x 45cm) followed by T1 (D1S1) and minimum weight of head per m2, yield per plot (35.6kg) and yield per hectare (199.0 t ha-1) were recorded in T8 (D3S2) of Chinese cabbage.
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The present investigation was carried out to find out the best planting time and spacing in terms of growth and flower yield and quality of China aster during Rabi season 2022. The research was laid out in Randomized Complete Block Design, which had nine treatments replicated thrice. The dates of sowing were kept in the month of October at an interval of one week i.e., 2nd, 9th and 16th having different planting distance (30x20 cm, 30x30 cm, 30x40 cm). This experiment reviled that that Treatment T1 in which seed were sown in 1st week of October having planting distance of 30 x 20 cm performed best in with respect to growth, flower yield and quality of China aster.
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An agro-meteorological investigation was undertaken during rabi, 2016 and 2017 at Farm, Department of Agricultural Meteorology, College of Agriculture, Pune, Maharashtra State (India). The experiment was laid out in split plot design with three replications. The treatment comprised of four varieties viz. V1: NIAW-301 (Trymbak ) V2: NIAW-917 (Tapovan), V3: NIAW-1415 (Netravati) and V4:NIAW-1994 (Phule Samadhan) as main plot and four sowing windows viz., S1: 43rd MW (22-28 October), S2: 45th MW (5-11November), S3: 47th MW (19-25 November) and S4: 49th MW (3-9 December) as sub plot treatments. The agrometeorological indices indicated more values for 45th MW (5-11November) and 47th MW (19-25 November) sown wheat crops and lowest values in late sown crop. Days to crown root stage, tillering stage, ear emergence stage, 50% flowering stage, milking stage, dough stage and physiology maturity matched closely with observed values for all sowing environments. It revealed that the grain yields were significantly higher in NIAW-1994 (51.07 and 48.52 qha-1) and significantly superior to the rest of the wheat varieties. This was followed by NIAW-917(45.72 and 43.43 q ha-1), NIAW-301(43.57 and 41.27 q ha-1). The variety NIAW-1415 recorded significantly lower grain yield (40.89 and 38.84 qha-1) during 2016 and 2017, respectively. The grain yield was maximum at 47th MW sowing window (50.40 and 47.88 qha-1), the grain yield of 45th MW (47.94 and 45.42 qha-1) were at par with 47th MW sowing window. This was followed by 43rd MW sowing window (43.88 and 41.68 q ha-1), 49th MW sowing window (39.04 and 37.07 q ha-1) during 2016 and 2017, respectively.
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Wheat (Triticum aestivum L.) is a thermo-sensitive long-day crop. Temperature is a major determinant of its growth and productivity. Late sown wheat exposes preanthesis phenological events to high temperature that influence grain development and ultimately the yield [1]. Comprehensive assessments of the influence of climate variability on crop yields at local and regional scales can be highly beneficial. With an aim to assess the weather influences on wheat at local scale this study was taken up. An experiment was conducted at Department of Agricultural Meteorology Farm, College of Agriculture, Pune, Maharashtra State (India) in a split-plot design with three replications and sixteen treatment combinations of four different varieties and four sowing windows. Four varieties used were NIAW-301 (Trymbak ), NIAW-917 (Tapovan), NIAW-1415 (Netravati) and NIAW-1994 (Phule Samadhan). Four sowings were taken up on 43rd MW (22-28 October), 45th MW (5-11November), 47th MW (19-25 November) and 49th MW (3-9 December). The grain yield of wheat was influenced significantly by wheat varieties. The grain yields were significantly higher in NIAW-1994 (51.07 and 48.52 qha-1) and significantly superior to the rest of the wheat varieties. This was followed by NIAW-917(45.72 and 43.43qha-1), NIAW-301(43.57 and 41.27 q ha-1). The variety NIAW-1415 recorded significantly lower grain yield (40.89 and 38.84 qha-1) during 2016 and 2017, respectively. Correlation analysis with weather parameters e.g. Temperature (Maximum and Minimum), Relative humidity (Morning and Evening), Rainfall and bright sunshine hours and yield showed that from tillering to 50% flowering stage, maximum temperature (-0.962*) was significantly negatively correlated with grain yield (r = -0.980**), (r =-0.950**) during 2016 and 2017, respectively in NIAW-301 (Trymbak ). The same trend was observed in the remaining varieties also. Regression equations were developed to predict the yield.