questions: asking for the manures and fertizlizers requirement to cultivate onion in a land of 1 bigha. 
 answers: 18, 41,11 and 300 kilo grams of urea, single super phosphate, muriate of potash and farm yard manures respectively has been suggested as the manures and fertizlizers requirement to cultivate onion in a land of 1 bigha. out of these suggested, 15 kilo grams of urea and entire quantity of others has been suggested to apply as basal during final land preparation and remaining 3 kilo grams of urea has been suggested to top dress at 30-40 days after planting.