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|Title: ||Direct and residual effect of nitrogen in high yielding- and hybrid-chilli (Capsicum annuum)-radish (Raphanus sativus) system.|
|Authors: ||S C, Kotur|
P R, Ramesh
|Issue Date: ||2010|
|Citation: ||S C Kotur, P R Ramesh, K Anjaneyulu and V Ramachandran.2010. Direct and residual effect of nitrogen in high yielding- and hybrid-chilli (Capsicum annuum)-radish (Raphanus sativus) system. Indian Journal of Agricultural Sciences 80(7): 588-591.|
|Abstract: ||A field experiment was conducted in a sandy loam soil involving ‘Arka Lohit’, a high yielding variety and ‘ECL’, an F1 hybrid chilli (Capsicum annuum L.) during January-June 2003 using 15N-enriched (1% N abundance) urea as the tracer. Response in terms of dry matter production was observed in both the varieties when 100% N dose (120 and 200 kg/ha respectively) was applied in 3 splits i.e., basal + 2 top dresses. The highest yield of fruit of ‘Arka Lohit’ was obtained when the same dose was applied in 2 equal splits as basal + top dress due to its slower growth habit. ‘ECL’ hybrid out-yielded other treatments when 100% N dose was applied in 3 splits as basal + 2 top dresses due to its quick yielding habit. Either deferring the time of application by 10 days or reducing the N dose by 20 – 40% and increasing the splits from 2 to 3 were not beneficial. A significant residual effect of N was exhibited by ‘Arka Nishant’ radish (Ruphanus sativus L.) raised during July-August 2003, in terms of fresh yield, dry matter production and different parameters of N use efficiency compared to ‘control’. In general, the response of radish decreased as the dose of N input to chilli crop decreased. Therefore, the yield and N recovery was higher in radish crop grown where ‘ECL’ chilli was raised earlier. The highest overall recovery of residual fertilizer N was observed under 100% N dose applied to chilli crop as 3 splits (basal + 2 top-dresses) followed by the same dose applied in 2 splits (basal + top dress) and 3 splits (deferred by 3 days) in radish raised after both the chilli varieties. Radish utilized only 0.50 – 2.58% of residual N from fertilizer applied to previous chilli crop indicating a low recovery which is a common feature in most crops.|
|Appears in Collections:||Soil Science & Agricultural Chemistry|
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