ISHS Acta Horticulturae 640: XXVI International Horticultural Congress: Viticulture - Living with Limitations
EFFECTS OF COVER CROPS ON THE GROWTH OF GRAPEVINE AND UNDERGROUND ENVIRONMENT OF VINEYARDS |
| Authors: | G.C. Song, M.S. Ryou, M.D. Cho |
| Keywords: | Vitis labruscana, mineral element, soil microbe, cover crop, clean culture |
| Abstract:
To investigate long-term effects of rye and other cover crops on grapevines, experiments were carried out in the vineyards of Youngdong County and the National Horticultural Research Institute in Suwon City, Korea. The effects on vine growth of rye growing over three years compared to conventional tillage were determined. Soils contained more mineral elements when covered with rye for six years rather than three years or without the rye cover. In soils cropped with rye, there were dense populations of mesophilic Bacillus spp. and fluorescent Pseudomonas spp., while there were fewer aerobic bacteria and Actinomycetes. Grapevines grown with rye for six years rather than three years had more vigorous growth. Cluster weights and soluble solids of grapes grown with rye for three or six years were higher than those grown under clean culture. Among cover crop species, the amount of vegetation was highest for wild grass, followed by orchard grass then rye. Above-ground biomass was highest for rye, followed by hairy vetch then wild grass. Under-ground biomass was highest for rye and orchard grass. The species had no effect on soil pH but they affected soil organic matter content. Red clover and wild grass plots had high levels of most mineral elements, while rye plots had relatively high K, Ca and Mg contents. The population of mesophilic Bacillus spp. was high in soils covered with wild grass or under clean culture. The density of aerobic bacteria and fluorescent Pseudomonas spp. was high in soils covered with orchard grass and hairy vetch. There were no differences found in the quality of grapes grown with cover crops compared to those grown under clean culture. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
