Effect of depth of irrigation and level and time of nitrogen application on growth, yield and nutrient uptake by wheat (Triticum aestivum)

Abstract

A field experiment was conducted on sandy loam soil during the winter season of 1992 93 and 1993 94 at Kalyani, West Bengal, to study the effect of different depths of irrigation, viz. ?4 field capacity (FC), 1 FC, 312 FC and 2 FC (i.e. 4.5, 6, 9 and 12 cm water), levels of nitrogen (50 and 100 kglha) and its time of application (before irrigation and after irrigation) on plant height, yield attributes, yield and uptake of N, P and K by wheat (Triticum aestivum L. emend. Fiori Paol.). r Irri gation level up to 1 FC resulted in significantly higher plant height, yield attributes, as well as grain and straw yields of wheat over the other levels of irrigation. Nitrogen O 100 kglha when half of N top dressed after irrigation recorded greater grain and straw yields and yield components. The highest uptake of N, P and K in grain and straw and total uptake of N, P and K were also recorded with 1 FC irrigation. Similarly, 100 kg Nlha and its top dressing just after irrigation resulted in maximum N, P and K uptake in straw as well as grain of wheat crop, Total uptake of N, P and K by wheat crop showed the similar trend as in case of grain and straw with nitrogen application.