Response of scheduled application of zn and fym on yield and micronutrient uptake under rice wheat rotation
Anil Kumar Saxena, Suneeta Singh, Jogendra Kumar
Background: Application of Zn, FYM and their conjoint applications increased grain and straw yields of both rice and subsequent wheat crop however; no significant effect of treatment application schedule was recorded on yields of any crop. A proper nutrient management in rice-wheat system is warranted, so as to achieve high and sustainable productivity of the system present investigation was executed. Methods: Field experiments were conducted at Modipuram, District Meerut (U.P.) to evaluate the effects of zinc, farmyard manure and their combined application at two different schedules of application i.e. after two crop cycles or once in three years on yields and micronutrient uptake of third year rice and subsequent wheat crops. Result: Combined application of 2.5 kg Zn + 5 t FYM/ha increased the grain and straw yield of rice and wheat crops by 39.3, 34.2, 29.5 and 15.0 per cent over control, respectively. Application of treatments after two crop cycles resulted higher Zn uptake in rice grain as compared to treatment application limited to first year rice crop. Combined application of Zn and FYM was more effective in increasing total Zn uptake of rice and rice + wheat than individual application of FYM or Zn. The interaction effect of treatments and their application schedule significantly influenced uptake of Cu, Fe and Mn in crops. Application of 2.5 kg Zn + 5 t FYM/ha to rice crop can be recommended for rice-wheat rotation on Zn-deficient Ustochrept soils of western Uttar Pradesh.
Anil Kumar Saxena, Suneeta Singh, Jogendra Kumar. Response of scheduled application of zn and fym on yield and micronutrient uptake under rice wheat rotation. International Journal of Ecology and Environmental Sciences. 2020; 2(4): 215-221.