2024, Vol. 7, Issue 2, Part A

author(s)
AK Jain, Akhilesh Kr. Singh, Shaheen Naz and Pradeep Kumar

abstract
A field experiment was conducted at farmer field of Buxar districts under supervision of Veer Kunwar Singh College of Agriculture Dumraon (Buxar) Bihar, during the year 2020-21 & 2021-22 in Rabi season on “effect of different sources and application rate of potassium on growth of and yield of wheat crop”. Leaf Area Index at 80 DAS significantly higher in 75% RD of K +1/3^rd paddy crop residues incorporation (T₅) followed by 75% RD of K + 25% K through FYM (T₆). Number of tillers at maturity significantly higher T₅-75% RD of K + 1/3^rd paddy residue incorporation followed by T₃-125% RD of K as basal. Significantly higher grain yield was found in 75% RD of K +1/3^rd paddy crop residues incorporation (T₅₎ followed by 125% RD of K as basal (T₃). Highest K-use efficiency found in 75% RD of K + 1/3^rd paddy residue incorporation followed by 75% RD of K + 25% K through FYM (T₆) and T₇-75% RDK as basal + 25% RDK at 45 DAS. Highest potassium and nitrogen uptake in wheat grain were found highest in T₄-150% RD of K as basal followed by T₅-75% RD of K + 1/3^rd paddy residue incorporation.