PENETRATION AND ACCUMULATION OF PETROLEUM SPRAY OILS IN THE LEAVES, TWIGS, AND FRUIT OF CITRUS TREES
Open Access
- 1 October 1934
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 9 (4) , 699-730
- https://doi.org/10.1104/pp.9.4.699
Abstract
Petroleum spray oils are differentiated from the natural plant oils in citrus by means of a new dye combination. The spray oil appears to enter the plant entirely by capillarity and therefore does not penetrate deeply when proper quantities and types of emulsion are used. The oil enters through the cuticle and through the stomata or lenticles but remains between the cells. Most of the oil disappears during the first 4 weeks following application, but a small portion of it may remain in the bark or leaves until these parts are shed, sometimes after several years. A quantitative method for the determination of the oil is described.This publication has 2 references indexed in Scilit:
- ON SOME LIMITING FACTORS IN THE USE OF SATURATED PETROLEUM OILS AS INSECTICIDESPlant Physiology, 1929