CHLOROPHYLL AND CAROTENOID CONTENTS IN TOMATO AND CUCUMBER PLANTS IN RELATION TO DIMETHOATE AND PROFENOFOS APLLICATION | ||
| Journal of Plant Protection and Pathology | ||
| Article 1, Volume 27, Issue 3, March 2002, Pages 1853-1861 PDF (538.01 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jppp.2002.253423 | ||
| Author | ||
| M. H. M. Shiboob | ||
| Central Laboratory, Faculty of Agriculture (EL-Shatby), University of Alexandria, Alexandria, Egypt. | ||
| Abstract | ||
| The insecticides, dimethoate and profenofos were sprayed on tomato and cucumber plants at the fruiting stage. Effect of these insecticides by different concentrations (half, one, and twice recommended rates) on chlorophyll “a”,”b”, total and carotenoid contents were determined after different days of spraying. Dimethoate was more effective against chlorophyll “a” of tomato and chlorophyll “b” of cucumber leaves and highly reduced total chlorophyll of both plant leaves. Chlorophyll “b” of tomato and “a” of cucumber was more sensitive to profenofos and total chlorophyll was highly reduced in both plants leaves. Profenofos and dimethoate were more active to reduce carotenoid contents of tomato than cucumber leaves. | ||
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