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Effect of soil amendments (composts) on water balance and water quality- Model Simulations

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  032210,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.13802) @2003
Authors:   M. Reza Savabi, D. Shinde, K. Konomi, P. Nkedi-Kizza, K. Jayachandran
Keywords:   Modeling, Compost, Water Balance, Water quality

The nutrients loading from agricultural and urban areas have increased nutrient concentrations, particularly phosphorus, at the Everglades National Park (ENP). The soils in the region are mainly crushed limestone with low water holding capacity, high permeability, low organic matter, and low fertility. The Everglades-Agro-Hydrology Model (EAHM) has been developed to evaluate the impact of agricultural practices on crop production, water balance and the fate and transport of nutrients and pesticides. Considering the poor soil quality, the model simulation test indicated that the application of 90 to 134 T.ha-1 of compost annually will result in an increase in soil-water content, crop yield, and reduced water seepage below the root zone, thus reducing the potential for nitrogen and Atrazine to leach into groundwater.

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