Abstract:
Wheat (Triticum aestivum L.) response to different levels of fertilizer was studied during 2005-06 on farmer’s field at district Karak, Dera Ismail Khan, Pakistan. Objectives of the study was to determine optimum and economical level of fertilizer for wheat cultivation in rainfed regions. The study comprised seven rates of NP fertilizer i.e control (T1), 25-0 kg (T2), 0-25 kg (T3), 25-25 kg (T4), 50-25 kg (T5), 75-50 kg (T6) and 100-50 kg per hectare (T7) arranged in a RCBD with four replications. The data recorded on wheat grain yield and components showed that all NP levels significantly increased the number of tillers, 1000-grain weight, straw and grain yields as against control treatment. The data further showed linear increase in different parameters of wheat with increasing fertilizer levels upto 50-25 kg NP per hectare but further increment of fertilizer inhibited the physiological growth of crop which ultimately suppressed grain yield. The highest grain yield (2450 kg/ ha) was obtained with 50-25 kg NP showing 71 percent increase over control treatment (1435 kg). The inhibiting effect of higher NP doses on yield and yield components might be attributed to the scarcity of moisture in rainfed regions. Economic analysis showed that net income from increased yield of wheat over control ranged from Rs.1407 to Rs.5686/- per hectare. Maximum net income (Rs.5686/-) with 7.01 cost benefit ratio was obtained with 50-25 kg. Thus, level of 50-25 kg NP per hectare can be recommended as an economical rate of fertilizer for growing of wheat under rainfed condition.
Page(s):
353-359
DOI:
DOI not available
Published:
Journal: Journal of Agricultural Research, Volume: 48, Issue: 3, Year: 2010