CONTROL OF GRAPEVINE LEAF SPOT CAUSED BY PSEUDOCERCOSPORA VITIS WITH APPLICATION OF BICARBONATE
This study was conducted to find environmentally friendly control methods and to investigate occurrence pattern of grapevine leaf spot, major disease in ‘Campbell early’ cultivar. Grapevine leaf spot caused by Pseudocercospora vitis is one of the most important disease in Korea. The occurrence patte...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Research Institute for Fruit Growing Pitesti
2014-12-01
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| Series: | Fruit Growing Research |
| Subjects: | |
| Online Access: | http://www.icdp.ro/publicatii/lucrari%202014/10.%20Park%20Korea.pdf |
| Summary: | This study was conducted to find environmentally friendly control methods and to investigate occurrence pattern of grapevine leaf spot, major disease in ‘Campbell early’ cultivar. Grapevine leaf spot caused by Pseudocercospora vitis is one of the most important disease in Korea. The occurrence pattern of leaf spot for ‘Campbell early’ cultivar was conducted in organic vineyards and conventional vineyards of Sangju, the main growing region of grape from 2012 to 2013. As results, the symptom of leaf spot was observed at last-June firstly in the organic vineyards and then the occurrence rate was gradually increased. The rate of lesion area was rapidly increased to 80.2% in last-August. To control grapevine leaf spot, some materials were tested and bicarbonate was selected. The optimum concentration of bicarbonates for control of grapevine leaf spot is 0.5%, and occurrence of grapevine leaf spot by treatment of 0.5% sodium bicarbonate and ammonium bicarbonate were 6.2 or 8.2%, respectively. This result showed that bicarbonate was more effective than Lime Bordeaux mixture in control of grapevine leaf spot widely used in grape organic cultivation for disease control. But phytotoxicity was observed in the treatment of 1% sodium bicarbonate and 2% potassium bicarbonate. So, it is expected that grapevine leaf spot will be successfully controlled by application of 0.5% bicarbonate. |
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| ISSN: | 2286-0304 2286-0304 |