Organic cropping system received 80 N kg ha
−1
as external inputs while 150 N kg ha
−1
were supplied in conventional one. Organic nitrogen fertilizer (N content 7%) and mineral
nitrogen fertilizer were used in the organic and conventional system, respectively. In the conventional cropping system P and K
fertilizers were applied before transplanting together as single
superphosphate and potassium sulfate respectively, while N was
applied periodically by fertirrigation (1/3 of total N requested
as ammonium sulfate; the remaining N fertilizer as ammonium
nitrate).