VARIABILITY OF WATER AND SOIL CHARACTERISTICS WITHIN A PRODUCTION CYCLE IN AN ALTERNATIVE SHRIMP-PADDY CULTIVATION PLOT IN KHULNA, COASTAL BANGLADESH
نویسندگان
چکیده
A six months study was carried out in an alternative shrimp paddy cultivation plot situated Khulna District, Bangladesh. In soil, the mean values of sodium (Na) 13.33 mg l-1, calcium (Ca) 42.12 potassium (K) 472.50 iron (Fe) 1.01 phosphorus (P) 7.05 sulfur (S) 46.67 ammonium-nitrogen (NH4+-N) 247.68 nitrate-nitrogen (NO3--N) 114.78 pH 8.09, Electric conductivity (EC) 4.45 ms m-1, redox potential (Eh) -63.65 mv and organic carbon (OC) 2.56% were observed. Whereas water, found as Na (1051.25 l-1), Ca (400.00 K (135.50 Fe (0.75 P (1.626 S (283.75 NH4+-N (43.05 NO3--N (17.64 (8.29), EC (35.30 m-1), Eh (-73.08 mv). Except S, P, Na, K, Fe, NH4+-N, NO3--N, increased over culture period shrimp. The value decreased gradually water soil. Insignificant monthly variation most parameters measured except soil indicate that present shrimp-paddy practice has no significant impact on plot.
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ژورنال
عنوان ژورنال: Khulna University studies
سال: 2022
ISSN: ['1563-0897', '2789-2697']
DOI: https://doi.org/10.53808/kus.2007.8.2.0727-l