Rice-Prawn Farming System: Impacts on Soil Quality and Land Productivity for Modern Varieties of Paddy Production in Bangladesh
The rice-prawn gher (RPG) farming system, locally known as the White Revolution, is an advanced, indigenous agricultural technology solely developed by local farmers in southwestern Bangladesh in the mid-1980s. This paper examined the impact of RPG farming on soil quality and land productivity of paddy production of modern varieties (MV) in Bangladesh. Two contrasting farming systems â€” RPG and year-round modern varieties (YRMV) â€” were considered. A total of 40 farmers (20 farmers from RPG and 20 from YRMV paddy farming) were randomly selected. Each of the sampled 20 RPG and 20 YRMV paddy farmers owned 30 farm plots. Soil sample collection procedures were conducted in two phases â€” at the beginning of paddy transplanting and during harvesting â€” in both farming systems. RPG farming has significant impacts on soil quality and land productivity in Bangladesh. The findings indicate that the leftover feeds of prawn production provide a significant amount of soil nutrients, such as nitrogen, soil organic matter, phosphorus, potassium, to soils in fields for paddy production under the RPG farming system. As a result, RPG farmers use comparatively less chemical fertilizers per unit of MV paddy production compared to YRMV farmers. Moreover, per unit yield of MV paddy was higher in RPG farming than in YRMV paddy farming.
Volume (Year): 7 (2010)
Issue (Month): 2 (December)
|Contact details of provider:|| Postal: |
Phone: (63-49) 536-2365
Fax: (63-49) 536-7097
Web page: http://www.searca.org/Email:
More information through EDIRC
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Dewalt, Billie R. & Vergne, Philippe & Hardin, Mark, 1996. "Shrimp aquaculture development and the environment: People, mangroves and fisheries on the Gulf of Fonseca, Honduras," World Development, Elsevier, vol. 24(7), pages 1193-1208, July.
When requesting a correction, please mention this item's handle: RePEc:sag:seajad:v:7:y:2010:i:2:p:49-66. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Avril DG. Madrid)
If references are entirely missing, you can add them using this form.