S. Pervin
Scientific Officer
IWM Division, BARI, Gazipur
A. R. Akanda
Principal Scientific Officer
IWM Division, BARI, Gazipur
P. K. Sarkar
Principal Scientific Officer
IWM Division, BARI, Gazipur
M. S. Rahman
Scientific Officer
IWM Division, BARI, Gazipur
The study was conducted at the research field of Irrigation and Water Management Division, BARI, Gazipur during the rabi seasons of 2010-2011 and 2011-2012 to determine an appropriate irrigation schedule for optimum yield and to find out the critical stage to irrigation for groundnut. In the first year the highest yield (2.10 t/ha) and the lowest yield (1.30 t/ha) were obtained in the treatments T1 (no water stress) and T5 (water stress at flowering and pod formation stages), respectively. Whereas, in the second year, the highest (1.65 t/ha) and lowest (1.34 t/ha) yields were obtained in the treatments T5 and T3, respectively. Flowering and pod formation stage were the critical stages in the first year but in the second year, flowering stage was the critical stage. The highest benefit cost ratio (1.55) was found in treatment T5 while the lowest (1.04) was obtained from treatment T1 in the second year. This trend also prevailed in the first year.
Irrigation scheduling, optimum yield, benefit cost ratio, groundnut, water stress
Central farm, IWM Division, BARI, Joydebpur, Gazipur
Crop-Soil-Water Management
This study was undertaken to identify the crop’s growth stages sensitive to water stress and to determine a suitable irrigation option against drought for sustainable production.
The experiment was conducted at the research field of Irrigation and Water Management Division, BARI, Gazipur during the rabi seasons of 2010-2011 and 2011-2012 on groundnut (variety : BARI Chinabadam-8) with a randomized complete block design (RCBD) and three replications. The treatments were selected based on applying irrigation levels at different growth stages of groundnut given as follows:
T1= Irrigation at vegetative, flowering, pod formation and seed filling stage
T2= Irrigation at flowering, pod formation and seed filling stage
T3 = Irrigation at vegetative, pod formation and seed filling stage
T4 = Irrigation at vegetative, flowering and pod filling stage
T5 = Irrigation at vegetative and pod filling stage
The soil was silty clay loam having a bulk density of 1.50 gm/cc and volumetric water content at permanent wilting point (PWP) and field capacity (FC) equal to 23% and 43.5%, respectively. Seeds were sown in line on 28 November, 2010 and 21 December, 2011 at the rate of 100 kg/ha. The unit plot size and line to line spacing were 4 × 3 m and 30 cm, respectively. Fertilizers were applied at the rate of N12, P32, K36, S54, and B2 kg/ha. Two-thirds of N and total amount of other fertilizers were applied at the time of final land preparation and remaining N was applied as top dress after first irrigation. A common irrigation (5 mm) was applied before the sowing for ensuring good germination of seed. Intercultural operations such as weeding, ear thing up and pesticide application were done as when necessary. Groundnut was harvested on 23 June, 2011 and 27 May, 2012 and data on yield and yield parameters were recorded.
IWM Annual Report, BARI,2011-2012
The flowering and pod formation stages were the most sensitive stage The benefit cost ratio was 1.55 for irrigated groundnut.
Report/Proceedings