A. J. Mila
Scientific Officer
IWM Division, BARI, Joydebpur, Gazipur
A. R. Akanda
Principal Scientific Officer
IWM Division, BARI, Joydebpur, Gazipur
S.K. Biswas
Senior Scientific Officer
IWM Division, BARI, Joydebpur, Gazipur
P. K. Sarkar
Principal Scientific Officer
IWM Division, BARI, Joydebpur, Gazipur
S. Pervin
Scientific Officer
IWM Division, BARI, Gazipur.
Site/location
This study was conducted at the experimental field of IWM Division, BARI, Gazipur to investigate the water requirement and water use efficiency of mustard using sprinkler irrigation. Sprinkler irrigation method was used in treatment T1-T5 and basin irrigation method was used in treatment T6. The results showed that plant height and yield were significantly influenced by different irrigation treatments. Other yield contributing characters such as no. of pods per plant, seeds per pod, branches per plant, plant population per m2 and 1000 seeds weight varied with the irrigation but were not statistically significant. The highest seed yield (1.39 t/ha) was obtained from the treatment T6 (irrigation at vegetative, pre-flowering and pod formation stages) and the lowest seed yield (0.83 t/ha) was obtained from the treatment T3 (irrigation only at pod formation stage). The vegetative stage was the critical stage to irrigation for mustard. The highest water use efficiency (13.3 kg /ha-mm) was found in treatment T1 while the lowest (7.30 kg/ha-mm) was found in treatment T3. The benefit cost ratio (BCR) of sprinkler irrigation and basin irrigation method was 1.44 and 2.13, respectively. The results suggest that sprinkler irrigation method may not be economically feasible for mustard cultivation.
Sprinkler irrigation, basin irrigation, water use efficiency, benefit cost ratio, mustard yield
Crop-Soil-Water Management
This study was undertaken to investigate the response of mustard to different soil moisture regimes, to predict the water sensitive stages,total water requirement and to evaluate the economic feasibility of sprinkler irrigation for mustard cultivation.
The experiment was conducted at the research field of Irrigation and Water Management Division, BARI, Gazipur during the rabi season of 2011-2012 with mustard (variety BARI Sarisha-14). The experimental design was randomized complete block (RCB) with six treatments. The treatments were:
T1= Sprinkler irrigation at vegetative stage (at 20 DAS)
T2= Sprinkler irrigation at pre flowering stage (at 30 DAS)
T3= Sprinkler irrigation at pod formation stage (at 55 DAS)
T4= Sprinkler irrigation at vegetative (20 DAS) and pod formation stages (55 DAS)
T5= Sprinkler irrigation at pre-flowering (30 DAS) and pod formation stages (55 DAS)
T6= Basin irrigation (farmers practice) (at 20, 30 & 55 DAS)
The soil was silty clay loam having a bulk density of 1.49-1.50 gm/cc and volumetric water content at wilting point (WP) and field capacity (FC) were 14.1% and 28.5%, respectively. Seeds were sown in line on 17 November 2011 at the rate of 6.5 kg/ha. The unit plot size and line to line spacing were 3.9 m × 5 m and 30 cm, respectively. Fertilizers were applied at the rate of N104, P32, K39, S24, Zn1.2 and B1.0 Kg/ha. Two- third 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 was applied before sowing for ensuring good germination. Intercultural operations, such as weeding, thinning and pesticide application were done as when necessary. Irrigation water was applied to bring the soil moisture up to field capacity considering the effective root zone depths. The crop was harvested on 12 February 2012. After threshed and cleaned, data on seed yields (at 12% moisture content) and yield contributing characters were recorded.
IWM Annual Report 2011-2012, BARI
The study reveals that basin irrigation method is more profitable and technically feasible for mustard cultivation than sprinkler irrigation. In other words, the initial investment for sprinkler irrigation is high which is not affordable to general farmers. Mustard had a good response to different irrigation treatments. The vegetative stage was the critical stage to irrigation for mustard cultivation. Sprinkler irrigation method is not economically feasible for mustard cultivation. On the other hand, basin irrigation is profitable and affordable to farmers.
Report/Proceedings