S.K. Biswas
Scientific Officer
IWM Division, BARI, Gazipur
P.K. Sarker
IWM Division, BARI, Gazipur
Dr. K. C. Roy
IWM Division, BARI, Gazipur
A field experiment was conducted at the Regional Agricultural Research Station, Jossoere during the rabi seasons of 2000-2001 and 2001-2002 with three maize cultivars viz. BARI maize-6, Barnali and Pacific-11 to study their response of different numbers and timing of irrigation on the yields. The highest grain yield was obtained from the treatment with 4 irrigations throughout the growing seasons followed by the treatments with no irrigation each at grain tilling, silking, knee-high and seedling stages for all the cultivars. Percentage of yield reduction due to no irrigation at different stages was found the highest for the variety, Pacific-11 and the lowest for other two varieties. Interaction between irrigation and variety shows that Pacific-11 produced the highest grain yield of 9.75 t/ha when irrigated at 20, 40, 70 and 95 days after sowing (DAS) with 351 mm of water. For the same irrigation sequences and timing, BARI maize-6 and Barnali produced 7.11 and 6.81 t/ha, respectively.
Maize yield, irrigation, Irrigation scheduling
Regional Agricultural Research Station, Jessore
Crop-Soil-Water Management
This experiment was designed to see the effect of irrigation number and timing on the yields of different maize cultivars.
Field experiment with three maize cultivars was conducted at the Regional Agricultural Research Station, Jessore during the rabi season of 2000-2001 and 2001-2002. The cultivars of maize were: BARI-6 (V1), Barnli (V3) and Pacific-11 (V3). The experiment was laid out in a split-plot design with three replications. The was silty loam having bulk density, 1.45 g/cc, field capacity, 27.5 per cent and wilting point, 12.5 percent on weight basis. The following irrigation treatments were selected for the study:
T1= Four irrigations at 20, 40, 70 and 95 DAS
T2= Three irrigations at 40, 70, and 95 DAS (no irrigation at seedling stage)
T3= Three irrigations at 20, 70, and 95 DAS (no irrigation at knee-high stage)
T4= Three irrigations at 20, 40, and 95 DAS (no irrigation at silking stage)
T5= Thre irrigations at 20, 40, and 70 DAS (no irrigation at grain filling stage)
Annual Research Report 2001-2002, IWM Division, BARI, Gazipur
The hybrid maize (Pacific -11) can produce as high as 9.75 t/ha of yield with 4 irrigations. However, BARI maize-6 and Barnali can produce 7.11 and 6.81 t/ha of yields with the same number and timing of irrigations. In both years, the treatment T1 with 4 irrigations produced the highest yield and the average water used by the treatment was 351 mm.
Report/Proceedings