Nandhini, D.U. , E Somasundaram and M Thiyagarajan 2023. Residual Effect of Organic Manures on Rice Fallow Summerblackgram (Vigna Mungo L.). Bangladesh Journal of Botany. 52, 2 (Jun. 2023), 235–241. DOI:https://doi.org/10.3329/bjb.v52i2.66944.