Responses of Four Orange Varieties to Certain Petroleum Oils in Texas

Author: Dean, H. A.

Source: Journal of Economic Entomology, Volume 68, Number 6, 15 December 1975 , pp. 835-837(3)

Publisher: Entomological Society of America

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No differences in juice quality, yield or tree growth were found during the 1967–69 season following 231°C and 213°C paraffinic oils, 228.5°C naphthenic oil, and non-oil summer treatments with ‘Hamlin:’ ‘Pineapple’ or ‘Valencia’ oranges (except for a single incident of soluble solids to acid ratios with out-of-season Valencia oranges in 1967 when all samples failed to meet minimum maturity requirements). With ‘Marrs’ oranges, only the 231 paraffinic oil and non-oil samples from 1969 had a higher acid content than the 213 paraffinic oil samples. No differences in yields among treatments were found with the 4 orange varieties. Growth of Marrs orange trees was greater in 213 paraffinic oil plots in 1967 than in plots of other treatments while greater growth was found in 1969 in plot trees of this and 231 paraffinic oil treatments than of non-oil treatment. Tree reactions were negligible, therefore, following summer applications of 231 and 213 paraffinic oils and 228.5 naphthenic oil to Marrs, Hamlin, Pineapple, and Valencia orange trees.

Document Type: Research Article

Publication date: December 15, 1975

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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