COMBINED EFFECT OF BIOCHAR AND PHOSPHORUS ON GROWTH AND YIELD OF WHEAT UNDER DIFFERENT IRRIGATION REGIME

Abstract

A field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka- 1207, to evaluate combined effect of biochar and phosphorus on growth and yield of wheat under different irrigation regime during November 2019 to March 2020. The experiment was laid out in two factor split plot design with three replications. Irrigation regime under main factor were I CRI +Flower Initiation (FI) stage, I 0 = Control, I 3 1 = At Crown Root Initiation (CRI), I =At CRI+FI+ Grain Filling (GF) stage and four different combinations of biochar and phosphorus doses were in sub factor viz., BP ton Biochar ha Phosphorus ha -1 -1 , BP , BP 1 =5 ton Biochar + 20 kg Phosphorus ha 3 =20 kg Phosphorus ha -1 -1 , BP 2 2 = At 0 =5 ton Biochar +15 kg . There were 16 treatment combinations. The tallest plant (100.16cm), maximum number of tiller (5.64), highest leaf length (16.92cm), maximum ear plant spike -1 -1 (17.76), highest grains spike highest grain yield (3.67tha (7.71tha -1 -1 (5.36), highest ear length (14.86cm), maximum spikelet -1 (50.77), highest 1000-grain weight (47.86g), ), highest straw yield (4.03tha ) and harvest index (47.75%) were obtained from I stage and 5 ton biochar +15 kg phosphorus ha is recommendable for improved wheat production.