M.S. Islam
IWM Division, BARI, Gazipur
M. A. K. Mridha
M. S. Alam
M. H. Rashid
IWM Division, BARI, Gazipur
The experiment was conducted at the central farm of Bangladesh Agricultural Research Institute, Joydebpur during 1999-2000 and 2000-2001. For irrigation levels (viz. 1,2,3 and 4 numbers) with three different fertilizer doses. low, medium and standard were applied in different combinations to know the interaction effects on wheat production. It was observed that the 4 numbers of irrigation with standard dose of fertilizer produced higher yields (4.49 t/ha in 1999-2000 and 4.94 t/ha in 2000-2001) than any other combinations. It was also found that at low irrigation level increased doses of fertilizer did not produce higher yield of wheat. This indicates that the main reason for national low yield of wheat is the inadequate soil water of low level of irrigation.
Wheat, irrigation, fertilizer dose, interaction
Central ferm, BARI, Gazipur
Crop-Soil-Water Management
The specific objectives were :
i) To determine the optimum irrigation level and fertilizer dose for maximum yield
ii) To find the economically viable combination of irrigation and fertilizer application
The study was conducted on wheat (Triticum aestivum , variety-Kanchan) at BARI-farm, Joydebpur (Lat: 24.000 E) during the dry seasons of 1999-2000 and 2000-2001. Four irrigation levels (viz. 1.2.3 & 4 numbers) with three different fertilizer doses low, medium and standard were applied in different combinations to know the interaction effects on wheat production. In 1999-2001, seeds were sown on 27th November 1999 and crops were harvested on 3rd March 2000. In 2000-2001, seeds were sown on 1st December 2000 and harvested on 5th March 2001. The unit plot size was 4 t/ha×5.0 m (20 sq.m). The soil was silty clay loam with an average bulk density of 1.5g/cc and field capacity 27-50 percent by weight basis. The experiment was laid out in a split-plot with three replications. Soil moisture was determined before each irrigation by gravimetric method. Measured irrigation water was then applied in the plots up the field capacity of the soil. Yield and Yield contributing parameters viz. plant height, grains per spike.1000 seed weight and seed yields were recorded. The experiment was carried out with the following treatments.
Annual Research Report 2000-2001
In wheat cultivation proper integration of irrigation levels and fertilizer doses is essential to obtain the optimum yields. In Joydebpur area 4 irrigations (applied at 20,40,60 and 80 days after sowing) and standard fertilizer doses viz. N100,P60,K40,S20 and Zn4 Kg per hectare are found optimum for successful wheat cultivation. Considering the agro-climatic conditions and the crop physiology, this result is applicable to most wheat growing areas of Bangladesh.
Report/Proceedings