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Portable Rainfall Simulator Tests for Assessing the Hydrologic and Nutrient Movement Effects of Organic Amendments In Potato Production Systems

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

Citation:  Paper number  032287,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.14976) @2003
Authors:   RM Seymour, Greg Porter
Keywords:   Infiltration rate, soil erosion, nitrogen, phosphorus, rainfall simulator, potato production

Movement of nutrients, erosion and runoff for potato cropping systems was measured with a portable rainfall simulator. The cropping systems studied were: 1) compost and manure amended soil and 2) conventional chemical fertilized soil with no organic amendments. Infiltration rates and runoff volumes for 1 m X 1 m were estimated from field measurements. Then runoff samples were taken to assess entrainment of sediments and nutrient content.

Infiltration rates and mass of sediment in runoff were not significantly different. Total nitrogen, bioavailable phosphorus and total carbon concentrations in the sediments and dissolved phosphorus concentrations in runoff were significantly higher for amended soils than unamended soils.

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