EVALUATION OF MANURIAL VALUE OF BIOGAS PLANT SLURRY WITH MAIZE AS A TEST CROP ON MEDIUM BLACK SOIL
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Date
18-02-89
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MAHATMA PHULE AGRICULTURAL UNIVERSITY R a h u r i , lNKaJa.etva.slat.tvsL ( I n d i a . )
Abstract
An investigation entitled,"Evaluation of manorial value of biogas plant slurry with maize as a test crop on medium black soil" was laid out in a factorial randomized block design with three replications at the Agricultural College Farm, Pune during Kharlf. 1987. There were four levels of biogas plant slurry viz., 0, 5, 7.5 and 10 tonnes/ha and three levels of nitrogen viz., 0, 50 and 100 kg N/ha under study. The maize grain yield was significantly increased with increased levels of slurry application. The stover yield showed significant improvement due to different levels of slurry application as compared to control. N, P and K content of maize grain and stover, crude protein content of maize grain and N, P and K uptake by maize grain and stover and total uptake of these nutrients was significantly increased with the increased levels of slurry application. Important physica$|chemical and biological properties of the soil showed significant improvement with increased levels of applied slurry. Grain yield of maize was significantly increased with increased levels of nitrogen application. The application of 50 and 100 kg N/ha were on par but increased the stover yield significantly over control. The N, P and K content of grain and stover, crude ^ protein content of grain and uptake of N, P and K was significantly more with increased levels of nitrogen application. Nitrogen application showed the favourable influence on physico-chemical and biological properties of the soil. The grain and stover yield of maize obtained at 7.5 tonnes/ha of slurry was equivalent to that of 100 kg N/ha application. Therefore, it would be advisable to use 7.5 tonnes/ha of slurry instead of applying 100 kg N/ha through urea.