Abstract
The research work was conducted during Kharif season 2020-2021 at the Naini Agricultural Institute Research Farm of the Department of Soil Science and Agricultural Chemistry in Prayagraj (U.P). The data was recorded on 27 plots using 9 treatments including control having 3 levels of Biochar and Poultry Manure respectively (0%, 50%, 100% /ha). This research trial data was recorded based on mean performances in T9 (B3 P3) @ 100% Biochar + 100% Poultry Manure was showed the highest yield (98.05 q/ha). The combination effect of both soil amendment (Biochar and poultry Manure) shown highest results in plant height (cm), number of leaves, number of pods per plant, pod length(cm), weight of pods per plant (cm). The results showed that mean performances of growth parameters of cowpea are shown highest in 75 DAS was found significant. It can be concluded that from this research it is possible to recommend the treatment (T9) combination of Biochar (5 t/ha) + Poultry Manure (2 t/ha). It shows effective response to soil fertility and increase in plant growth parameters and yield of cowpea.
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