PublicationsSafbin

  • Participatory variety selection and adaptation performance of the varieties in diverse climatic situation

  •   | 
  • 01/04/2016

Arabinda Das completed his BSc thesis at the Department of Animal Husbandry and Veterinary Science at the University of Rajshahi, Bangladesh.

Summary

Climate change leads to a climatic variability, an increase of drought events and a shift of rainy seasons in Bangladesh. These factors have a negative effect on rice cultivation. Different duration varieties are adapted to different climatic situations.

The objective of this study was to use a participatory varietal selection trial to identify the best of selected short duration, drought tolerant and drought escaping rice varieties for rainfed areas in the study sites.

The trial was conducted in SAF-BIN project locations in the upazillas[1] Baraigram (Natore district), Paba (Rajshahi district) and Patnitala (Naogaon district) under SAFBIN project. The four rice varieties BINA7, BRRIdhan56, BRRI dhan57 and BRRIdhan49 were tested. The varieties were arranged in a randomized complete block design with three replications. The locally practiced fertilizer and pest control strategies were applied.

Irrespective of location BRRI dhan49 produced most fertile tillers/hill (16). In Paba and Baraigram, BRRI dhan56 produced the highest thousand grain weight (TGW) (23.1 g and 23g) respectively and in Patnitala, second highest only to BINA 7 (23.4g). At Paba BINA 7 and BRRI dhan49 produced the highest grain yield (4.8t/ha) followed by BRRI dhan56 and BRRI dhan57 (4.3 t/ha). At Patnitala BRRI dhan49 gave the highest grain yield (4.7t/ha) followed by BRRI dhan56, BRRI dhan57 and BINA 7 (4.2t/ha). At Baraigram, BINA 7 produced the highest grain yield (4.6t/ha) followed by BRRI dhan56, BRRI dhan49 and BRRI dhan57 (4.1t/ha). The highest growth duration was recorded in BRRI dhan49 (133d) followed by BINA 7, BRRI dhan56 and lowest in BRRI dhan57 (107d).

BRRIdhan56 has unique drought tolerant capacity with acceptable yield (3.5 t/ha) in drought years. Farmers can get opportunity to cultivate a second crop after this variety and can increase farm productivity and income.



[1] a geographical region in Bangladesh used for administrative purposes, sub-units of districts. (Wikipedia, 2015: https://en.wikipedia.org/wiki/Upazilas_of_Bangladesh access date 19/10/2015.

 

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