Effect of nitrogen application timings and varieties on growth and yield of wheat grown on raised beds

Abstract

An experiment, in which wheat was grown on raised beds, was conducted during rabi seasons (at the Research Farm of the CCS Haryana Agricultural University, Hisar. The experiment had six nitrogen (N) application timings (full dose at sowing, 1 = 2 dose at sowing þ 1 = 2 dose at first irrigation, 1 = 3 dose at sowing þ 2 = 3 dose at first node stage, 1 = 3 dose at sowing þ 1 = 3 dose at first irrigation þ 1 = 3 dose at first node stage, full dose at first node stage and full dose at crown root initiation stage) as main effects and five wheat varieties: PBW343, WH711, WH542, WH283 and HD2687 as sub-effects. Growth, N uptake, yield and yield attributes of wheat were significantly higher under split (two or three) applications of N as compared to N applied as a single application. Amongst the varieties, PBW343 had the highest yield. The variety had vigorous growth in terms of plant height and dry matter accumulation, which eventually produced significantly higher effective tillers, higher number of grains per head and higher grain weight per head and ultimately significantly higher grain and straw yields.

Global Warming and Its Possible Impact on Agriculture in India

“…Bed planting of crops has proved successful in the wake of climate change as it results in increased water-use efficiency, reduced waterlogging, better access for interrow cultivation, weed control, banding of fertilizers, better stand establishment, less crop lodging, and reduced seeding rates (Bhardwaj et al, 2009;Chauhan et al, 2012a). Bed planting of crops has proved successful in the wake of climate change as it results in increased water-use efficiency, reduced waterlogging, better access for interrow cultivation, weed control, banding of fertilizers, better stand establishment, less crop lodging, and reduced seeding rates (Bhardwaj et al, 2009;Chauhan et al, 2012a).…”

Optimal Supply of Water and Nitrogen Improves Grain Yield, Water Use Efficiency and Crop Nitrogen Recovery in Wheat

“…It has been observed that the presence of high N concentration in soil when there is no crop or with low crop's demand viz. before emergence and/or at harvesting, results in low NUE and high leaching losses (Bhardwaj et al, 2010;Shi et al, 2012). Therefore, the timing and method of fertilizer N application is another important factor affecting NO3 leaching losses, which can be decreased by providing N at the time of maximum uptake (Oberle and Keeney, 1990).…”

Impact of Climate Change on Agricultural Productivity

“…Agronomic management of crops, such as method of sowing, can be an effective adaptation strategy under the climate change scenario. Bed planting of crops has proved successful in the wake of climate change as it results in increased water-use effi ciency, reduced waterlogging, better access for inter-row cultivation, weed control, banding of fertilizers, better stand establishment, less crop lodging, and reduced seeding rates (Bhardwaj et al 2009 ;Chauhan 2012a ). In irrigated areas, zero-till system is being considered as a viable alternative to alleviate from adverse effects of climate change as it reduces the demand for water and other resources.…”