Isopropyl available for citrus: Registration of the isopropyl ester specifically for use as plant growth regulator on citrus permits this form of 2,4-D
AuthorsH. Z. Hield
L. A. Riehl
T. A. Do Wolfe
Authors AffiliationsHenry Z. Hield is Associate Specialist in Horticulture, University of California, Riverside; L. A. Riehl is Associate Entomologist, University of California, Riverside; T. A. De Wolfe is Associate Specklist in Plant Pathology, University of California, Riverside.
Hilgardia 10(8):6-15. DOI:10.3733/ca.v010n08p6. August 1956.
The value of 2,4-D and related substances for preventing mature citrus fruit drop, for increasing fruit size, and for amending oil spray used for pest control to prevent leaf drop or fruit drop—or both—has been demonstrated.
Also in this issue:Lemon Industry in California: New economic and technological developments create market interactions between fresh fruit and lemon products
Citrus rejuvenation studies: Three basic soil treatments used in orchard investigations to determine best conditions for root growth and development
Drift of 2,4-D applied by plane: Better knowledge of wind direction and velocity as factors in drift contributes to reduction in number of damage suits
Temperatures and frost damage: Measurements of temperature inversions and blossom counts show extent of frost damage in tests in deciduous orchards
Plant response to polluted air: Specific effects of air pollutants on plants vary according to plant species and modifying internal and external factors
Nutrition of date seedlings: Glasshouse tests with Deglet Noor variety in sand and soil cultures indicate which nutrients best stimulate growth
Boron deficiency of grapes: Soil application at one ounce of borax per vine supplies enough boron for normal growth after midwinter pruning
Caterpillar damage to tomatoes: Results based on one-year survey indicate no evidence of resistance to insecticides in nine commercial tomato fields
Symptomatic and etiologic relations of the canker and the blossom blast of Pyrus and the bacterial canker of Prunus
Inheritance of resistance to powdery mildew in beans
Spotted wilt of the sweet pea