Evaluation of liquid biofertilizers in irrigated rice in farmers field at Mahabubnagar district of, Southern Telangana agroclimatic zone of Telangana state, India

Abstract

In the present investigation was carried out as on farm trial in farmers field at Mahabubnagar district, of Southern Telangana Agroclimatic Zone, of Telangana State, India for two years during kharif 2014 to 2015, to evaluate the feasibility of application of liquid bio fertilizers (Azospirillum and PSB) in combination with 75% of recommended dose of Nitrogen and phosphorus applied as inorganic fertilizer, in order to reduce the use of chemical/ inorganic nitrogen (N) and phosphorus (P) fertilizers on rice cultivated in lowland ecosystem. The results of both the years indicated that the plant performances were better when 25% less of recommended dose of nitrogen and phosphorus (inorganic/chemical) fertilizer was applied in combination with Azospirillum and PSB @ 2 l/ha. Considering the yield attributes, 75% RDNP + Azospirillum +PSB performed superior to farmers practice (100% inorganic). The grain yield of rice was enhanced by 3.6% and 2.7% during 2014 and 2015respectively, to the recommended dose even with 25% less RDF application Results revealed the greater scope of applying liquid biofertilizers (Azospirillum and PSB) to supplement chemical NP fertilizer with optimum yield of rice.