000 01975nam a2200181Ia 4500
999 _c25769
_d25769
003 OSt
005 20220822111825.0
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082 _a634.9
_bRAM/NU
100 _aRamakrishna Hegde
245 _aNutrient Content And Decomposition Of Leaf Litter Of Acacia Mangium Willd.As Affected By Season And Field Conditions
260 _aVellanikkara
_bDepartment of Silviculture and Agroforestry, College of Forestry
_c1995
502 _bMSc
520 3 _aA detailed experiment was conducted at the College of Forestry, Kerala Agricultural University, Vellanikkara, Thrissur, during the period from 1993 to 1995 to study the nutrient content and pattern of leaf litter decomposition of Acacia mangium Wild. During south west monsoon and north east monsoon seasons. The experiment was conducted both in home garden and open area. The rate of decomposition was faster in all the study situations. The initial nitrogen, lignin, C:N ratio and lignin : nitrogen ratio of leaf litter were found to exert profound influence on the rate of decomposition. The decomposition rate was found to be a function of time, soil moisture and soil temperature. The nutrient release pattern in almost all cases followed a characteristic biphasic model with an initial rapid phase followed by a slower latter phase. Among the different nutrients, potassium showed a faster rate of mineralisation in most of the situations while calcium and nitrogen mineralised slowly. Among the several mathematical models tried to predict the absolute amount of nutrients in the residual mass, the second order hyperbolic function was found to be good fit in most of the cases. Though the PH was not altered significantly by the decomposing litter mass, the content of most of the nutrient elements is found to be drastically influenced.
700 _aGopikumar K (Guide)
856 _uhttp://krishikosh.egranth.ac.in/handle/1/5810134331
942 _2ddc
_cTH