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Sjoerd Duiker Associate Professor, Soil Management
116 ASI Bldg.
University Park, PA. 16802
814-863-7637; swd10@psu.edu
Sustainable or
Organic Soil
Management |
| soil organic matter, soil qualtiy |
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| Sustainable /Organic Pest Management |
| cover/smother crops, crop rotation |
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Sustainable /Organic Natural Resources Environment
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Sustainable/Organic
Education and Training
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| curriculum development, demonstration, instructor, on-farm research |
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