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Gary R. Cline Education
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Research Focus
Current research is examining and developing sustainable means of producing vegetables
for limited-resource farmers with an emphasis on organic farming. Sustainable production
methods under investigation include the use of winter cover crops, living mulches, and
conservation tillage practices. Past research has examined effects of acid soils on
legumes.
Current Projects
Use of Conservation Tillage, Living Mulch, and Cover Crops For Sustainable Vegetable
Production:
Limited-resource farmers in Kentucky and surrounding states need to
adapt high-value crops such as vegetables to offset expected declines in tobacco
production. Sustainable vegetable production methods need to be developed that minimize
the use of agricultural chemicals and insure future agricultural productivity. These
methods include the use of legumes, winter cover crops, living mulches, and conservation
tillage. Organic vegetable production uses many sustainable practices and may be a niche
market for small farmers.
The abilities of winter cover crops (winter rye, hairy vetch, and a
mix) and a living mulch (subterranean clover) to supply nitrogen to peppers and cabbage
are being examined. Also, effects of living-mulch, no-tillage, and strip-tillage are being
determined on peppers and cabbage production. Treatment effects are evaluated by measuring
vegetable yields, weeds, foliar N, soil N, soil water, soil compaction, and soil
temperature.
Support Staff
Student Involvement
Each year the project employs a K.S.U. student worker and a high school student
participating in the Research and Extension Apprenticeship Program.
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| Cover Crops in May | No-till Vegetable Planter | No-till Peppers | Students Recording Data |
Recent Publications
Cline, G.R. and A.F. Silvernail. 1997. Effects of soil acidity on growth of sericea lespedeza. J. Plant Nutr. 20: 1657-1666.
Cline, G. R. and A. F. Silvernail. 1997. Effects of acidic minesoil on nodulation of sericea lespedeza (Lespedeza cuneata; Fabaceae) by the bacterium Bradyrhizobium. Trans. Ky Acad. Sci. 58:80-84.
Velagaleti, R.R. and G.R. Cline. 1995. Biological Nitrogen Fixation in Legumes and Nitrogen Transfer Crop Plants. In Pessarakli (Ed.) Handbook of Plant and Crop Physiology. Marcel Dekker, New York, NY.
Cline, G.R. and Z. Ngewoh Senwo. 1994. Tolerance of lespedeza Bradyrhizobium to acidity, aluminum, and manganese in culture medium. Soil Biol. Biochem. 26:1067-1072.
Cline, G.R. and Z. Ngewoh Senwo. 1993. Inhibitory effects of acidic minesoil on the sericea lespedeza/Bradyrhizobium symbiotic relationship. J. Plant Nutr. 16:1867-1880.
Links to Other Sites
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