Citrus weed control by monuron: Experiments with urea herbicides for weed control in citrus orchards encouraging but use of the chemicals is restricted

Day, B; Russell, R; McCarty, C

Citrus weed control by monuron: Experiments with urea herbicides for weed control in citrus orchards encouraging but use of the chemicals is restricted

Authors

B. E. Day
R. C. Russell
C. D. McCarty

Authors Affiliations

B. E. Day is Assistant Plant Physiologist. University of California, Riverside; R. C. Russell is Principal Laboratory Technician, University of California, Riverside; C. D. McCarty is Extension Field Technologist, University of California, Riverside.

Publication Information

Hilgardia 11(2):11-12. DOI:10.3733/ca.v011n02p11. February 1957.

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Abstract

The urea herbicide, monuron—3-(p-chlorophenyl)-l, 1-dimethylurea—formerly known as CMU, was registered with a federal residue tolerence of 1 ppm—one part per million—for limited use in Valencia and navel orange orchards during the fall of 1955.

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Agricultural-business outlook: Farmers must understand and apply economic principles to the business of modern agricultural production by scientific means

Peach tree borer control tests: Fall treatments with soil fumigants and use of trunk sprays evaluated in experimental program during the 1955–56 seasons

Aphid resistance to parathion: Nonphosphate insecticides under study for control of spotted alfalfa aphid where pest develops resstance to parathion

Fungi on spotted alfalfa aphid: Spread of fungi by natural and artificial means is resulting in excellent biological control of aphid in many counties

Soil fumigation for nematodes: Nematocides tested for the control of root-knot nematodes affecting fresh market and canning tomato crops in California

Codling moth infestations up: Damage to harvested walnuts increased markedly in northern California during the 1956 season in comparison with 1955

California scaly bark disease of citrus: No known cure for infected trees but treatment in early stages of disease can retard its advance into successive stages with their increasing economic loss

Bartlett pears for canning: Ripeness of fruit at time of processing affects color, flavor, aroma, and over-all quality of finished product

Weed control near grass areas: Soil fumigants and contact spray materials included in series of studies on control of weeds in relatively confined areas

Effect of zinc applications on the crop of grapefruit trees affected with mottle-leaf