Question: asking about cultivation practices of black gram
Answer: recommended time for cultivation is mid august to mid september 
duration : 90 days
varieties suitable: t9, t27,ku 301 and usjd 113
yield : 10-13 quintal per hactre
manures and fertilizer : urea @4kg per bigha, ssp@ 30kg and fym @ 1.3quital per bigha
seed rate : 2.5 to 3 kg per bigha
spacing : row to row @ 30cm, plant to plant @ 10 cm