Effect of Different Sowing Dates on Growth and Grain Yield of Chickpea (Cicer arietinum L.) Cultivars under Agro-environment of Taluka Dokri Sindh, Pakistan
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By randomized block design of 3 different sowing dates,3 kind of sowing quantitoes of 2 factors and 3 levels of 9 processings,the test studied the influence of planting date and density on Wanyou 29 yield.The results showed that sowing date,sowing date and sowing quantity interaction had significant effects on the yield of rapeseed,which reached the extremely significant level;Based on the sowing seeds condition of Wanyou 29,early sowing could gain high yield through proper.When the sowing date was 25th Sep.,the planting quantity was 3.0 kg/hm2,the highest yield was obtained in Wanyou 29.
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[Objective]The aim was to study the appropriate combination of sowing time and planting density of high-protein Summer Soybean Guodou5hao.[Method]as the test materials,four sowing time and five planting density were designed,the effects of sowing time and planting density on grawth and development and yield of Guodou5hao were studied.[Result]With the sowing time delaying,the yield of Guodou5hao was decreased,while with the planting density increasing,its yield increasea first and then reduced.The effects of planting density on their pods and yield of Guodou5hao were bigger than that of sowing time.When planting in 5th June and planting density was 2.55 × 105 plant/hm2,the yield was the highest of 3 173.7 kg/hm2.[Conclusion]Under the permitting conditions,Guodou5hao should be sowing early and the suitable sowing time is 5th12th June,the optimum planting density is 2.25 ×105~2.55 ×105 plant/hm2.If the sowing time is putting off,the planting density should be increasea.
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This research aims to identify the appropriate sowing date for better yield of chickpea, The experiment was conducted during 2018-2019, involving three different sowing dates (24 Oct, 13 Nov and 3 Dec.) along with three different chickpea varieties, In this research yield and base characteristics were analysed. The study focused on yield elements, such as grain yield and biological yield, Date 24 Oct gave the highest yield (1631 kg ha-1) with different sowing varieties. On the other hand, the date 3 Dec had the lowest yield (1220 kg ha-1) with different Sowing varieties. The results showed that the sowing date influence significantly the growth and yield of chickpea.
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The kind of rice Wanxian 98 was investigated from yield of different sowing dates, nitrogen levels, planting density and planting seedlings per hole. The results indicated that delayed sowing would lead to slightly undulated yield firstly, and then began to decrease and the difference was significant. The effects of nitrogen application amount on yield was reduced after the first rise. Too low or too high planting density is not conducive to the improvement of the yield of Wanxian 98. The planting density of 16.5 cm×20.0 cm had the highest yield, and the yield up to 8506.5 kg / hm2. Per hole planting four, six or eight basic seedlings, higher yields can be obtained and the actual yield was 8 496.0 、8 569.5、8 470.5 kg / hm2 respectively.
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Background.Exploring suitable split nitrogen management is essential for winter wheat production in the Huang-Huai-Hai Plain of China (HPC) under water-saving irrigation conditions, which can increase grain and protein yields by improving nitrogen translocation, metabolic enzyme activity and grain nitrogen accumulation.Methods.Therefore, a 2-year field experiment was conducted to investigate these effects in HPC.Nitrogen fertilizer was applied at a constant total rate (240 kg/ha), split between the sowing and at winter wheat jointing growth stage in varying ratios, N1 (0% basal and 100% dressing fertilizer), N2 (30% basal and 70% dressing fertilizer), N3 (50% basal and 50% dressing fertilizer), N4 (70% basal and 30% dressing fertilizer), and N5 (100% basal and 0% dressing fertilizer).Results.We found that the N3 treatment significantly increased nitrogen accumulation post-anthesis and nitrogen translocation to grains.In addition, this treatment significantly increased flag leaf free amino acid levels, and nitrate reductase and glutamine synthetase activities, as well as the accumulation rate, active accumulation period, and accumulation of 1000-grain nitrogen.These factors all contributed to high grain nitrogen accumulation.Finally, grain yield increase due to N3 ranging from 5.3% to 15.4% and protein yield from 13.7% to 31.6%.The grain and protein yields were significantly and positively correlated with nitrogen transport parameters, nitrogen metabolic enzyme activity levels, grain nitrogen filling parameters.Conclusions.Therefore, the use of split nitrogen fertilizer application at a ratio of 50%:50% basaltopdressing is recommended for supporting high grain protein levels and strong nitrogen translocation, in pursuit of high-quality grain yield.
Nitrogen fertilizer
Winter wheat
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This study was conducted at Adaptive Research Farm, Vehari, Pakistan during the year 2003-06. Two newly evolved wheat varieties SH-2002 and AS-2002 alognwith a standard Uqab-2000 were subjected to different sowing times starting from November 1 to December 30 at ten days interval. The pooled data revealed that significantly higher grain yield (3826 kg/ha) was obtained from variety AS-2002 sown on November 10 followed by same variety sown on November 20 (3731 kg/ha). Each successive delay in sowing beyond November 20 progressively decreased the grain yield significantly. Yield was reduced by 27.24 percent in sowing of December 30 as compared to November 10. Wheat variety AS-2002 proved better than SH-2002 and Uqab-2000. Three years results concluded that regardless of the varieties November 10 to November 20 is the optimum sowing time for wheat under agro-ecological conditions of Vehari.
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[Objective] The aim was to definitude the suitable sowing date of Guidan589,which will provide basis for high-yield cultivation.[Method] There are six sowing date in spring,four sowing date in autumn,The influences of different sowing dates on growth period,yield and yield-related traits of Guidan589 were studied through the field experiment.[Result] Sowing in spring with the sowing date was postponed,the time of sowing date to seeding date and the whole growth period shortens,yield reduce gradually,sowing in autumn,with the sowing date was postponed,the sowing date to seeding date and the whole growth period lengthens,yield increase at first,then reduce,in a short,sowing in Feb.15th-Mar.15th and Aug.1th-15th can acquire high-yield of Guidan589,yield-related traits are better,sowing before Feb.can meet low temperature easily,seeding was effected,sowing after in late Mar.,the whole growth period become shorten obviously,sowing after Sept.due to the low temperature,maize become maturity are difficult,harvest yield is low.[Conclusion] The suitable spring sowing date was Feb.15th to Mar.15th,and the optimal autumn sowing date was between Jul.20th and Aug.15th.These sowing dates can avoid or reduce the seasonal natural disasters and enhance the yield.
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The relationship among planting density,maize yield and yield components of Luoyu No.8 was studied.The results revealed that planting density has greatest influence on plant height,then significant influence on 1000-grains weight and grain number per row,but non-significantly influence on ear length and ear row number.Planting density is the key factor to influence yield of maize,which means the best planting density of Luoyu No.8 in Yuxi district and other similar areas is not over 78 755 shoots/hm2.
Plant Density
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Synopsis In five out of cases the variety ✕ location interaction variance was smaller for yield components than for grain yield of oats. This seemed to result from the multiplicative method of interaction of the components.
Variance components
30-day yield
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