Abstract
The study entitled odorata Compost Affected Soil Chemical and Rice Crop (Oryza sativa L.) had been conducted in Padang City, West Sumatra. It was started in February 2015 to May 2015. The study aimed was to examine the mechanism of amendment soil chemical properties and nutrient uptake of rice crop was fertilized By Chromolaena odorata Compost. The experiment was conducted by using Randomized Complete Design (RCD) in Split Plot Design with the main plots were three varieties of rice crops namely; Cisokan (V1); Pandan Wangi (V2) and Red Cempo (V3). The subplot consisted three types of fertilizer composition; 5 Mg ha-1 Compost C. odorata (CCP) +100% Artificial Fertilizer Recommendation (AFR) (F1); 7.5 Mg ha-1 CCP+75% AFR (F2); 10 Mg ha-1 CCP +50% AFR (F3), with three replications. Data was analysed by using the F test significance level of 5%, and an Honestly Significant Difference test (HSD) α 5%. Parameters include analysis of soil chemical properties, manure, analysis of nutrient uptake and the weight of dry crop biomass. The study indicated there was amendment in soil chemical properties after the application of C. odorata, compost achieving optimal fertility for rice crop. Nitrogen and other minerals uptake in rice crop increased due to the increased provision of artificial fertilizers escorted by lowering the dose of C.odorata compost. The ability about the nutrient uptake of rice crop is higher in rice Pandan Wangi and causes the higher forage yield than rice Cisokan or Red Cempo.
Highlights
IntroductionIts potential as natural forage cannot be utilized by livestock
Chromolaena odorata plant or C. odorata is known as a shrub
It is proved that compost application by using C. odorata has a good influence on rice crops grown on land contaminated by mine waste cement [2]
Summary
Its potential as natural forage cannot be utilized by livestock This is caused by the high polyphenol ingredients that makes animal reluctant to eat it. It is proved that C. odorata contains a quite high N and K, which is 2% higher at the upper forage [1] These plants are able to thrive even on marginal land and were able to beat the growth and development of the reeds. In other report, stated that compost application by using C. odorata can reduce the use of artificial fertilizer on the crop nutrient but it was suspected that nutrient needs of each type of plant will be different and is largely determined by the plant species [4]. This study was conducted to determine the mechanism of changes in soil chemical properties and nutrient transport of some types of rice crops by composting C.odorata accompanied by the provision of artificial fertilizer
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