INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY

Volume 16, No. 02, Month MARCH, Year 2020, Pages 319 - 328

Soil microbial activities in alfisol with different green manure application

Onkum, P. and Teamkao, P.

Abstract Download PDF

The result showed the highest soil respiration in green manure from African sesbania application was 0.5478 mgCO2/g soil. The lowest microbial biomass nitrogen (MBN) found in green manure from cowpea application was 29.68 mgCO2/g soil. MBN was found at the highest value in non-application of green manure (control) at 2.20 ng/g soil after 30 days application. Urease activity was the highest in green manure from African sesbania at 12.58 μg NH4-N/g dwt. However, activities of cellulase, protease and acid-phosphatase were not statistically differed between treatments. Enzymatic activities increased with the highest activities found at 20th and 30th days after application. The green manure from Soybean promoted the highest microbial biomass while green manure from jack bean promoted the highest soil respiration. The enzymes were changed, except for urease. Decomposition rate related to plant quality to control activity in soil.

Keywords

Green manure, Enzymatic activity, Microbial activity

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