Bir Jahangir Shirazy*
Rice Farming Systems Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh
A.B.M. Mostafizur
Rice Farming Systems Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh
Lipiara Khatun
Rice Farming Systems Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh
Amina Khatun
Rice Farming Systems Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh
Md. Mamunur Rashid
Farm Management Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh
Md. Sirajul Islam
Farm Management Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh
Nadia Akter
Genetic Resource and Seed Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh
Winter rice, Salt tolerant, Coastal region, Salinity, Cropping system
Hizla village of Kaligonj Upazilla under Satkhira district
Crop-Soil-Water Management
Rice, Water salinity
In the coastal area there are two types of land condition, saline and non-saline where salinity effects found in mainly Boro season (October-March). In Aman season (June-October) there is no heavy salinity indeed. So that in Boro-Fallow-T. Aman cropping system farmers generally grow BINA dhan-10 in salt affected land and BRRI dhan28 in non-saline area during Boro season.
Planting material Seedling of BRRI dhan28, BRRI dhan63, BRRI dhan67 and BINA dhan-10 were used as planting material of this experiment and all the material was provided by Rice Farming Systems Division of BRRI.
Experimental site: The experiment was conducted at the Hizla village of Kaligonj Upazilla under Satkhira district (22°19' and 22°33' north latitudes to 88°58' and 89°10' east longitudes) of Bangladesh during Boro season, 2015-16 at farmer’s field.
Rice variety used In Boro-Fallow-T. Aman cropping system BRRI dhan67 and BINA dhan-10 were tested in the saline region while BRRI dhan63 and BRRI dhan28 in the non-saline area.
Cultivation procedure Each variety and farmer was considered as a treatment and replication, respectively. Every variety of saline area was set on ten farmers’ field and varieties of the non-saline area were set on thirty farmers’ field. Each experimental field was 33 decimal in size. The seeds of tested varieties were sown in 1st week of December 2015 and transplantation was done at 2nd week of January 2016. After final land preparation by using power tiller, fertilizers TSP (Triple Super Phosphate) as a source of P, MOP (Muriate of Potash) as a source of K, ZnSO4 as a source of Zn, Boric acid as a source of Boron were applied @ 60 kg ha-1, 80 kg ha-1, 65 kg ha-1 and 10 kg ha-1, respectively. Urea as a source of N was applied in 3 equal splits at 15 DAT (Days after transplantation), 30 DAT and 50 DAT. Salinity was measured by using EC meter at 30, 45, 60, 75 DAT and at maturity stage. Salinity range was 1-6 dS/m or more (1:5 with H2O) for the whole of the season in the entire experimental field. Proper care was taken of seedlings on seedbed and 40 days old seedlings were transplanted at 20×15 cm spacing. All intercultural operations were carried out following standard procedures as recommended by BRRI (Adhunik dhaner chash, 2015). Irrigation, insect, pest and weed control were done when necessary. Harvesting was done at 80% physiological maturity at farmer’s field. The participating farmers conducted all the field operations.
Data collection Collected yield data were converted into t ha-1 at 14% moisture level and economic data were presented as $ ha-1 . Farmers’ preference test was done before harvesting of rice at the field without any biasness. Experimental design and statistical analysis This experiment was laid out in Randomized Complete Block Design (RCBD). Yield data were analyzed through Crop Stat7.2 computer package program (IRRI, 2009). Least Significant Difference (LSD) method was used for comparison of treatment means at 5% level of significance.
International Journal of Applied Research 5, 63-66 Online release 20 May 2019
Journal