Performance of pusa rice hybrid-10 with variable sources of manuring
Loading...
Date
2008-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present study was conducted during kharif 2007 on a Mollisol at Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar (29°N, 79°29¢ E and 243.8 m), India. Twelve treatments (9 pure organic and three checks) treatments viz. Sesbania green manuring (GM) @ 20 t and 30 t ha-1 alone, Sesbania 20 t + FYM 5 t and 10 t ha-1, Sesbania 30 t + FYM 5 t and 10 t ha-1, Sesbania 30 t +wheat straw 5 t ha-1, FYM @ 10 t ha-1 alone, neem cake powder (Neemax @ 5 t ha-1) were studied against recommended NPK (100 kg N, 60 kg P2O5 and 40 kg K2O ha-1), 50 per cent recommended NPK and unfertilized control. The Randomized Block Design was applied with 4 replications. Newly evolved aromatic hybrid variety PRH-10 (115 days) was used. GM of Sesbania aculeata (SA) 30 t + FYM 5 t ha-1 produced the highest grain (4.4 t ha-1), straw (4.6 t ha-1) and total dry matter yield (9.0 t ha-1) which was significantly higher than control, Neemax 5 t ha-1, GM 20 t ha-1 and FYM 10 t ha-1. This combination of organic nutrients had increased grain yield by 13 per cent over recommended NPK and 51 per cent over unfertilized control. The treatment consisting Sesbania 20 t or 30 t ha-1 + FYM 10 t ha-1 had not shown superiority over GM 20 t ha-1 + FYM 5 t ha-1. A high dose of manuring was found more prone to insects infestation (leaf roller and stem borer) and bacterial leaf blight and false smut. GM of Sesbania with 30 t ha-1 green biomass alone was substituted the recommended NPK and produced 4.1 t grain, 4.5 t straw and 8.6 t total dry matter per ha which was statistically at par with highest producer treatment GM 30 t + FYM 5 t ha-1.
High yields were found to be attributed with better plant growth (plant height, tiller number and plant dry matter) and resulted in more number of panicles m-2 and grains per panicle. The N uptake by grain, straw and total dry mater was highest with GM 30 t + FYM 10 t ha-1 (69.8 kg, 25.3 kg and 94.3 kg, respectively) followed by GM 30 t + FYM 5 t ha-1 (15.8 kg, 22.9 kg and 88.7 kg, respectively) and these N uptake values were found statistically on par with GM 30 t ha-1 and recommended NPK. FYM applied @ 10 t ha-1 had highest value of NUE (18 kg grain/kg N applied) followed by GM @ 30 t ha-1 and GM 30 t + FYM 5 t ha (12 kg grain/kg N applied), while it was 10 kg grain per kg of urea N applied in recommended NPK. N recovery among organic sources was highest (25.7%) with GM 30 t ha-1 followed by GM 20 t ha-1 (23.5%) and GM 30 t + FYM 5 t ha-1 (23.0 %). The efficiency of N utilization (kg grain/kg N absorbed) was also highest (116.9) with FYM 10 t ha-1. The soil pH, organic carbon and available P were not affected due to different treatments. On the basis of above findings, it may be concluded that organic PRH-10 can be taken with growing a good crop of Sesbania having green biomass 30 t ha-1 or more. It is also recommended that FYM @ 5 t ha-1 should be applied before Sesbania sowing as GM 30 t ha-1 + FYM 5 t ha-1had resulted in highest grain (4.4 t/ha), straw (4.6 t/ha) and total dry matter yield (9.0 t/ha ) and has capacity to replaced recommended NPK inorganic fertilizers.
Description
Keywords
null