Open AccessKelarutan Fosfat dan Ferro pada Tanah Sulfat Masam yang Diberi Bahan Organik Jerami Padi
Author(s) -
Arifin Fahmi,
Bostang Radjagukguk,
Benito Heru Purwanto
Publication year - 2013
Publication title -
jurnal tanah tropika/jurnal tanah tropika dan kualitas lingkungan
Language(s) - English
Resource type - Journals
eISSN - 2086-6682
pISSN - 0852-257X
DOI - 10.5400/jts.2009.v14i2.119-125
Subject(s) - sowing , chemistry , phosphate , rice straw , organic matter , soil ph , straw , soil water , zoology , agronomy , environmental chemistry , environmental science , soil science , inorganic chemistry , biology , biochemistry , organic chemistry
The objective of this research was to investigate the effect of application of organic matter from rice straw (RS) on phosphate and Fe2+ solubility in the acid sulphate soils. The research was conducted in the glass house consisting of the three treatment factors using the completely randomized design with three replication. The first factor was soil condition : continuous application of RS and without application of RS during the last 5 years. The second factor was fresh application of RS ; with application and without application, whereas the third factor was phosphate application consisting 3 rates of SP - 36 fertilizers (0.5; 1,0 and 1.5 of application dossage). The result showed the three factors interaction had a significant influence on soil pH at 2 weeks after planting, whilst interaction between RS application and soil condition had a significant influence on soil pH, available phosphate at 4, 6 and 8 weeks after planting. The interaction between RS application and phosphate fertilizers rate had a significant influence on soil pH 4 weeks after planting, and on available phosphate at 8 weeks after planting. The main effect of RS application was significant on exchangeable Fe and soil pH at all observations periods.