Interactive effect of irrigation and fertility levels on economic and qualitative yield of extremely late sown wheat (Triticum aestivum L.)

Abstract

Efficient water management, being one of the good agronomic management practices which leads to improve the performance of wheat. Late sowing has substantial effect on nutrient management of wheat. Application of N-P2O5-K2O in balanced level has great impact on late sown wheat yield. Since high yielding varieties of wheat have been found highly responsive to nitrogen fertilization. But in absence of phosphorus, nitrogen becomes ineffective and most of the applied nitrogen remains un-utilized. The efficiency of both nitrogen and phosphorus is greatly enhanced in the presence of each other (Stoeva and Tonev, 2003). So, level of fertilization and irrigation is need to be optimize for higher fertilizer use efficiency and decrease the loss of water under late sown condition, in particular. A field experiment was carried out to investigate the “Interactive effect of irrigation and fertility levels on economic and qualitative yield of extremely late sown wheat (Triticum aestivum L.)’’ and results revealed that low levels of irrigation and fertilizer doses recorded significantly lower plant height, tiller number, LAI and dry matter accumulation. On the other hand, use of four irrigation along with full recommended dose of fertilizers (120-60-40 kg N- P2O5-K2O ha-1) recorded higher growth parameters viz. plant height, tiller number, LAI(leaf area index) and dry matter accumulation as well as economic and qualitative yield of extremely late sown wheat.