AMELIORATION OF THE CHEMICAL PROPERTIES OF SOIL THROUGH APPLICATION OF GREEN MANURE CROPS IN BAJOA SOIL SERIES
DOI:
https://doi.org/10.53808/KUS.2010.10.1and2.1014-LKeywords:
Bajoa soil series, green manure, green manure crops, chemical properties of soilAbstract
The experiment was conducted in the Soil Science Discipline, Khulna University, Bangladesh during July to December of 2009 to observe the influence of green manure on chemical properties (pH, CEC, EC, N, P, K, S, Ca, Mg, Zn, B, C:N ratio, organic matter) of Bajoa soil series. The experiment was laid out in a completely randomized design with three replications. The experiment comprised six treatments viz., control (no green manure) and five green manure crops varieties namely pigeon pea (Cajanus cajen), green gram (Vigna radiate) common bean (Phaseolus vulgaris), cowpea (Vigna unguiculata), yard long bean (Vigna sesquipedalis). EC (4.04 to 4.42 dS m-1) and CEC (26.07 to 35.93 cmole/kg), organic matter (4.77 to 5.27 %) and the macro and micro nutrients such as N (0.115 to 0.124 %), P (7.2 to 12.6 μg g-1), K (0.37 to 0.42 meq/100g), S (29.92 to 51.47 μg g-1), Ca (14.0 to 19.0 meq/100g), Mg (5.24 to 5.73 meq/100g) and B (0.37 to 0.75 μg g-1) and Zn (0.54 to 0.87 μg g-1) were found due to the application of green manure crops. Organic matter and carbon are increased by green manure crop incorporation which eventually initiates CEC enhancement. Moreover, it was found that cowpea (Vigna unguiculata) green manure initiates more effective result than that of other treatments.
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