RESPIRASI DAN POPULASI BAKTERI PADA KOMPOS KOTORAN SAPI DAN RUMPUT RAWA
Daftar Isi:
- The use of compost as a source of plant nutrients is one of the chemical-free program. The use of organic fertilizers can improve, increase and maintain the land productivity in a sustainable manner. Respiration of bacteria is an indicator of microbial activity in compost that has different organic material content, N content and pH values on some composting material composition. This research aims to determine the effectivity of the composition of composting to the population and respiration of bacteria. This research was conducted from February to April 2016. The bacteria and respiration analysis was performed at the Laboratory of Chemistry, Biology, and Soil Fertility, Soil Department, Faculty of Agriculture, University of Sriwijaya, Indralaya. The composition of the composting were 100 % manure (K100), 50 % manure + 50 % swamp grass (K50R50), 25 % manure + 75 % swamp grass (K25R75), and 10 % manure + 90 % swamp grass (K10R90). The data of bacterial populations were processed using log transformation and analyzed by a completely randomized design, meanwhile the respiration was analyzed by factorial completely randomized design with the observation period as the second factor. Differences in respiration and soil bacterial populations originating from various composting compositions were analyzed by honestly significat difference (HSD0.05). The bacteria population of all the composting composition decreased from the first until the third week, and increased on the last week, while respiration of bacteria on all composting compositions decreased by the time period of composting. The population and respiration of bacteria between all of the treatment were different at the beginning of composting, but tend to showed the same result at the end of composting. The decreasing of population and respiration of the bacteria are based on the results of chemical analysis due to the low availability of nutrient or organic carbon for decomposer bacteria.