Forecasting and control of Alternaria blight in carrots

被引：0

作者：

Thomas, JE ^{[1
]}

Kenyon, DM ^{[1
]}

Martin, D ^{[1
]}

机构：

[1] NIAB, Cambridge CB3 OLE, England

来源：

BCPC INTERNATIONAL CONGRESS CROP SCIENCE & TECHNOLOGY 2003, VOL 1 AND 2, CONGRESS PROCEEDINGS | 2003年

关键词：

D O I：

暂无

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Alternaria blight on carrots has increased in incidence and severity in recent years. Crops are often sprayed routinely to control the disease, but little is known about its effects on yield and quality in the UK. Experiments using inoculated field plots were carried out over three years to investigate potential losses in marketable yields, and the benefits of different spray programmes. Observations of disease in a number of commercial crops treated either according to growers' normal practice, or an Alternaria spray forecasting system, were made. In addition, the potential of cultivar resistance to reduce the rate of Alternaria development was investigated. Results showed that moderate and high levels of Alternaria had a significant impact on root yield. In moderate disease years, a forecasting system reduced the number of sprays applied compared to normal practice without affecting disease control. Cultivar had a significant effect on Alternaria severity, and partial resistance could be exploited in integrated control systems.

引用

页码：919 / 924

页数：6