Improvement Of Soil Quality And Rice Crop Production Using Plus-Organic Fertilizer

The decrease of soil quality is occurred due to chemical fertilizer application in high quantity,
within long period and lack of organic matter use in production system of paddy field rice. The research objective was to obtain formula of plus-organic fertilizer that can increase soil quality and rice crop production. It was conducted from October 2013 to May 2014 and the study method was identification of nutrients content in raw materials as well as nutrients content in plus-organic fertilizer formula. The greenhouse study used Factorial Randomized Block Design with 2 treatment factors (4 formula and 4 dose levels) and 3 replications for each factor. The field study used Factorial Randomized Block Design with 2 treatment factors (3 fertilizer types and 3 rice varieties) and 3 replications for each factor. The results showed that wastes from plant and livestock can be utilized as raw materials for plus-organic fertilizer. There was 4 formula of plus-organic fertilizer which agree with SNI 19-7030-2004 that consisted of formula 4 to formula 9. Formula 9 treatment with dose of 750 kg.ha-1 was the best treatment in term of rice crop production in greenhouse and in irrigated land which produced 8.16 ton.ha-1 for Ciliwung rice variety as well as 7.04 ton.ha-1 in tidal swamp land for Gogo Aromatik rice variety, respectively.