Abstract
A field experiment was done for two consecutive years from 2010-11 to 2011-12 with two varieties of wheat (DBW 17 and DPW 621-50) and ten treatments of fertilizer, involving NPK, FYM and micronutrient, with an objective to maximize the crop yield. Results showed that variety DBW 17 recorded significantly higher grain yield (4.93 %), straw yield (6.31%) and HI (1.12%) as compared to DPW 621-50. There was no significant difference in yield attributes between two varieties. Application of 150 % recommended NPK fertilizers produced the maximum grain yield (6.10 t ha-1), which was 7.7 % higher over the 100% NPK fertilizers, followed by 15 t ha-1 FYM application along with 150 (5.98 t ha-1) and 125 % (5.96 t ha-1) NPK application. There had no significant effect of micronutrients (Zn, Cu, Fe & Mn) on wheat yield indicating that the soil was not deficient in those micronutrients. A significant variation was observed between two years in respect of yield and yield attributes, higher performances being recorded in 2011-12. Crop lodging was observed, with a maximum lodging of 26.4 % causing a yield reduction of up to 9.9 %. Agronomic efficiency was the maximum (13.64 kg grain kg-1 fertilizer) with the recommended rate of fertilizers and it decreased with increasing rates. Addition of FYM didnt increase the agronomic efficiency due to inclusion of 75 kg N contribution from 15 t ha-1 of FYM.SAARC J. Agri., 14(1): 103-110 (2016)
Highlights
In India, wheat (Triticum aestivum L.) is the second most important food crop after rice, with an average yield of 3.07 t ha-1 as recorded in 2013-14 and in Punjab the yield was 4.85 t ha-1
The layout consists of two main plots i.e. wheat variety DBW 17 and DPW 621-50 and ten sub plots arranged in a split plot design with three replications
Varietal difference in grain yield, straw yield and HI was significant whereas yield attributing parameters like earhead m-2, grains earhead-1 and 1000-grain weight and grains m-2 were comparable between two varieties
Summary
In India, wheat (Triticum aestivum L.) is the second most important food crop after rice, with an average yield of 3.07 t ha-1 as recorded in 2013-14 and in Punjab the yield was 4.85 t ha-1. In India, present day cultivated spring wheat varieties are cultivated with use of moderate level of N (120 kg ha-1). To avoid lodging sometimes farmers skip the last irrigation (Hobbs et al, 1997), which is crucial for grain filling and limiting the wheat yield. This is practiced in India due to high wind velocity during grain filling period, flat system of planting, application of flood irrigation and non-availability of lodging resistant genotypes with higher N application. Integrated use of organic and inorganic sources of nutrient may support enhanced yield of wheat (Kumara et al, 2013)
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