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Control of carrot cavity spot with metalaxyl and phosphorous acid

Control of carrot cavity spot with metalaxyl and phosphorous acid Metalaxyl, fosetyl-AI, calcium nitrate and phosphorous acid were tested in field trials against carrot cavity spot. Metalaxyl applied to soil at 1 kg/ha at the three to six trueleaf stage was the most consistently effective treatment, reducing the proportion of roots affected by at least 32%. Additional applications made 9-12 weeks later had no further effect on incidence of cavity spot. In one trial, a foliar spray with phosphorous acid at 4 g/l applied to run-off at the five to six true-leaf stage reduced incidence of cavity spot by 78% and increased root weight. Foliar sprays with calcium nitrate or fosetyl-AI had no effect on incidence of cavity spot. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australasian Plant Pathology Springer Journals

Control of carrot cavity spot with metalaxyl and phosphorous acid

Australasian Plant Pathology , Volume 17 (2) – Jan 28, 2011

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References (12)

Publisher
Springer Journals
Copyright
Copyright
Subject
Life Sciences; Plant Pathology; Plant Sciences; Agriculture; Entomology; Ecology
ISSN
0815-3191
eISSN
1448-6032
DOI
10.1071/APP9880041
Publisher site
See Article on Publisher Site

Abstract

Metalaxyl, fosetyl-AI, calcium nitrate and phosphorous acid were tested in field trials against carrot cavity spot. Metalaxyl applied to soil at 1 kg/ha at the three to six trueleaf stage was the most consistently effective treatment, reducing the proportion of roots affected by at least 32%. Additional applications made 9-12 weeks later had no further effect on incidence of cavity spot. In one trial, a foliar spray with phosphorous acid at 4 g/l applied to run-off at the five to six true-leaf stage reduced incidence of cavity spot by 78% and increased root weight. Foliar sprays with calcium nitrate or fosetyl-AI had no effect on incidence of cavity spot.

Journal

Australasian Plant PathologySpringer Journals

Published: Jan 28, 2011

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