| Abstrak/Abstract |
Maintenance of environmental production is important to increase rice production. This study aimed to determine the effects of organic fertilizers application on nitrogen uptake, nitrogen availability and the abundance of soil fauna in paddy field. This study used Randomized Complete Block Design (RCBD) factorial with combination treatments of cow manure, neem compost and straw compost in two kind of dosage application at 10 tonscenterdotha?1 and 20 tonscenterdotha?1 with three replications in each treatments. The total treatments were 14 and one control. The observed parameters were pH, soil organic matter, available-N, soil total N, total N and N-uptake in plant tissues, non-parasites nematode and agronomic observations. The data obtained from the experiment were analysed by analysis of variance using SAS 9.1 software. The differences of treatments have a significant effect in several chemical properties i.e. potential pH, soil organic matter, available-N, soil total N, plant total N and N-uptake, and biological properties. The results of N-uptake in the vegetative phase, as well as plant height and number of tillers indicate that the best dosage that can be achieved in this study was the application of neem compost 20 tonscenterdotha?1 with rice production at 4.6 tonscenterdotha?1.
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