Effect of depth of irrigation and level and time of nitrogen application on growth, yield and nutrient uptake by wheat (Triticum aestivum) Saren B.K.1, Jana P.K. Department of Agronomy, Bidhan Chandra Krishi Viswa Vidyalaya, Mohanpur, Nadia, West Bengal, 741252 1 Present address: Department of Agronomy, Institute of Agriculture, Palli Siksha Bhavana, Visva-Bharati, Sriniketan, West Bengal
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. ¾ field capacity (FC), 1 FC, 3/2 FC and 2 FC (i.e. 4.5, 6, 9 and 12 cm water), levels of nitrogen (50 and 100 kg/ha) 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.). Irrigation 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 @ 100 kg/ha 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 N/ha 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. Top Keywords Wheat, Irrigation, Nitrogen level and time, yield attributes, Yield, Nutrient concentration and uptake. Top |