AGRONOMIC RESPONSE TO ORGANIC GRAIN CROPPING SYSTEMS
Applied Research
Alan Sundermeier
Extension Educator
The Ohio State University Extension
BOWLING GREEN
Abstract
\r\n A field size experiment was initiated in 2001 in Northwest Ohio to compare the agronomic response of certified organic grain cropping systems compared to conventional systems. The experiment is addressing ways to maintain grain production and economic viability while building soil quality. The treatments include three certified organic, a conventional no-till, and an integrated conventional grain cropping system. All treatments consist of 5 replications that are randomized throughout a 30 acre field. Each treatment has utilized different soil improvement strategies to provide crop nutrients and improve soil quality. Recent soil test analysis shows that all 3 organic systems have significantly higher active carbon content at the 6 – 12 inch soil depth compared to both conventional systems. Also, phosphorus soil test levels showed significant differences, with the organic 1 (O1) system at 54 parts per million (ppm) different from the organic 3 (O3) system at 21 ppm. The conventional no-till (36 ppm) and integrated (29 ppm) were similar to each other but significantly less than the O1 system phosphorus levels. All other soil analysis showed no significant differences. Economic analysis of the organic 3 (O3) system showed the greatest income over the 6 year period. These results indicate that tillage along with soil amendments in the organic systems can economically maintain soil quality when compared to conventional systems without these amendments.
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Poster has NOT been presented at any previous NACAA AM/PIC
This poster is being submitted for judging. It will be displayed at the AM/PIC if not selected as a State winner. The abstract will be published in the proceedings.
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Authors: A. Sundermeier
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Sundermeier, A. Extension Educator, Oho State University Extension, Ohio, 43402