Field experiments were conducted in two locations of Tamil Nadu Agricultural University at Agricultural Research Station, Bhavanisagar (Site-I) and Wetlands Farm, Department of Agronomy, Coimbatore (Site-II) to study the influence of application of organic manures and liquid manures on the performance of Blackgram under complete organic farming conditions. Experiments were conducted in split plot design, replicated thrice with four organic manures applied as basal and incorporated in the main plots and, five liquid manures were applied as foliar sprays twice in sub plots, at first flowering and 10 days later.
The organic manures were Farm Yard Manure (FYM) @ 12.5 t ha-1, vermicompost @ 2.5 t ha-1, enriched FYM @ 0.75 t ha-1 and enriched vermicompost @ 1 t ha-1 and the foliar sprays were Panchagavya @ 3%, Fermented Egg Extract @ 5%, Fermented Fish Extract @ 5%, Farmers Effective Microorganisms @ 5% and Jeevamruth @ 5%.
The results showed a non-significant influence on germination parameters. Enriched FYM in Site-I and vermicompost in Site-II showed significant influence on the growth parameters such as plant height (cm), shoot length (cm), number of nodules plant-1, fresh weight of nodules plant-1 (g), primary branches plant-1, whereas foliar spray of Panchagavya showed significant influence on plant height (cm) at harvest. The interaction effect was observed only in dry matter alone. For better growth performance in organic blackgram, application of enriched FYM @ 0.75 t ha-1 + Panchagavya spray @ 3% and vermicompost @ 2.5 t ha-1 + Panchagavya spray @ 3% is recommended.
