Effect of biofertilizer and nitrogen on wheal (Triticum aestivuvm) and their after effects on succeeding maize (Zea mays) in wheat-maize cropping system
Year: 2006
Type: article
Abstract: A study was conducted during 1997-98 and 1998-99 to evaluate the efficacy of 2 biofertilizers (Rhizobacteria and Azotobacter) and N in wheat (Triticum aestivum L. emend. Fiori & Paol.) and their after effects on succeeding maize (Zea mays L.) in wheat-maize cropping sequence at New Delhi, on a sandy loam soil analyzing low in total N and medium in available P and K. Both the biofertilizers being on par caused significant improvement in growth, yield and yield attributes and N uptake in wheat as compared to control. However, no carry over effect of these biofertilizers was observed in the following maize crop.Nitrogen application markedly increased growth and yield attributes, grain (4.30 tonnes/ha) and straw (6.40 tonnes/ha) yields, N uptake (101.10 kg/ha), net returns (Rs 15 535) and B: C ratio (1.45) in wheat up to 60 kg/ ha only. Application of 120 kg N/ha applied to wheat significantly increased the grain yield (3.98 tonnes/ha) and N uptake (112 kg/ha) in succeeding maize over no N. Direct applied N to maize significantly increased the grain yield (4.55 tonnes/ ha) and N uptake (131.80 kg/ha) in maize up to 120 kg/ha. Over the seasons, the grain yield of maize with 60 kg N/ha increased by 34.73 % over no nitrogen. The corresponding increase in yield with 120 kg N/ha over 60 kg N/ha was 13.78 %. Both the biofertilizers, being on par, recorded higher N uptake and net returns over no biofertilizer in wheat-maize cropping system. The uptake ofN and net returns in this cropping system increased with increasing levels of residual and direct applied N to maize up to 120 kg N/ha.
Authors: Virendra Kumar, I. P. S. Ahlawat
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W1155399112