Abstract
Atom absorption spectrophotometer (AAS) had been used to analyzed Ferro in the soil and in the green mustardleaf (Brassica junjea) treated with phenolics extract from the agricultural wastes of clove leaf (Eugenia aromatica),rice straw (Oryza sativa) and water hyacinth leaf (Eichhornia crassipessolms), in which the phenolics as the electrondonor on the biosensitizer – iron photoreduction. Phenolics extract was obtained from varions of aquadest and 40;60; 80% methanol. The solution without extract was used as sensitizer, while the extract without illumination wasused as control. Green mustard was packed into medium polybag within it added by 2,000 mg kg-1. Soil type assample was volcanic soil in various categories, such as: soil-extract, soil NPK fertilizer extract, and soil control.Results of Ferro analysis in the clove leafs treated with 80% methanol indicated the highest increasing Fe2+ of 22.94mg kg-1. Rice straw treated with 60% methanol showed the highest increasing Fe2+ of 34.5 mg kg-1. The waterhyacinth leafs treated with 60% methanol obtained the highest increasing Fe2+ of 17.67 mg kg-1. Fe2+ concentrationat soil-clove leafs had the highest increasing of Fe2+ production for 5.6 mg kg-1. Its concentration at soil NPKfertilizer extract water hyacinth leafs showed the highest increasing of Fe2+ production for 13.39 mg kg-1. Highestconcentration of Fe2+ in the green mustard at soil NPK fertilizer extract clove leafs was 176.37 mg kg-1. Variousconcentrations and various soil categories resulted in the highest increasing Fe2+ concentration in each agricultural waste extract.Keywords: Agricultural waste extract; ferro analysis; iron photoreduction; soil category[How to Cite: Rorong JA, Sudiarso, B Prasetya, J Polii-Mandang and E Suryanto. 2012. Ferro Content in Soil and Mustard Leave (Brassica junjea) Treated by Agricultural Waste on the Biosensitizer-Iron Photoreduction. J Trop Soils, 17 (3): 211-218. doi: 10.5400/jts.2012.17.3.211][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.3.211]
Highlights
The farmers have not effectively utilized organic materials as fertilizers in agricultural lands
The main keys in choosing the manures are the level of ripeness, the ratio of Carbon and Nitrogen (C/N), and the content of nutrients
The purpose of this research is to figure out the NPPK content in compost which is made of the mixture of cocoa rind and cow waste
Summary
The farmers have not effectively utilized organic materials as fertilizers in agricultural lands. Most of organic materials used are animal waste (cow, goats, chickens, and many more) and agricultural waste. In order to create alternative fertilizers and to support the development of ecofriendly agriculture, utilizing agricultural waste as the source of organic fertilizers is encouraged. There are many brands of organic fertilizer in the market. Organic fertilizer can be in the form of manure, compost, and the combination of both. The main keys in choosing the manures are the level of ripeness, the ratio of Carbon and Nitrogen (C/N), and the content of nutrients
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
