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California Agriculture, Vol. 14, No.2

Curly top disorder of melons in desert valleys
February 1960
Volume 14, Number 2

Research articles

Resistance of lygus bugs in seed alfalfa to toxicity of toxaphene
by Oscar G. Bacon, J. E. Swift, Vernon E. Burton
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: In parts of the alfalfa seed producing areas in the southern San Joaquin and Sacramento valleys, toxaphene has lost some of its original toxicity to lygus bugs. Where such toxicity loss occurs, toxaphene applied early in the year generally provides satisfactory control, but when applied late in the season control of the lygus bugs is poor.
Abstract Not Available – First paragraph follows: In parts of the alfalfa seed producing areas in the southern San Joaquin and Sacramento valleys, toxaphene has lost some of its original toxicity to lygus bugs. Where such toxicity loss occurs, toxaphene applied early in the year generally provides satisfactory control, but when applied late in the season control of the lygus bugs is poor.
Resistance to acaricides by European red mite studied in Bartlett pear field plots
by Harold F. Madsen, Peter H. Westigard
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: The incidence of resistance to certain acaricides by the European red mite—Panonychus ulmi (Koch)—has increased severely during the past few seasons. The acaricides were organic phosphate compounds and such specific acaricides as Ovex and other closely related compounds, Chlorobenzilate and Kelthane. All of the observations on European red mite resistance in California have been from the field. Laboratory studies have not been conducted due to the difficulty of rearing this mite species under artificial conditions.
Abstract Not Available – First paragraph follows: The incidence of resistance to certain acaricides by the European red mite—Panonychus ulmi (Koch)—has increased severely during the past few seasons. The acaricides were organic phosphate compounds and such specific acaricides as Ovex and other closely related compounds, Chlorobenzilate and Kelthane. All of the observations on European red mite resistance in California have been from the field. Laboratory studies have not been conducted due to the difficulty of rearing this mite species under artificial conditions.
Larger strawberries through plant breeding
by R. S. Bringhurst, Victor Voth
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Larger strawberries is one of the prime objectives of the current plant breeding program because harvesting cost decreases as frun. size increases.
Abstract Not Available – First paragraph follows: Larger strawberries is one of the prime objectives of the current plant breeding program because harvesting cost decreases as frun. size increases.
Late infection of curly top in field melons in producing areas of desert valleys
by R. A. Flock, E. F. Laird, R. C. Dickson
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Low populations of beet leafhoppers, rare incidence of curly top infection, and an almost complete absence of crown blight in the melon producing area of the Colorado desert in the spring and early summer of 1959 coincided with a good melon crop.
Abstract Not Available – First paragraph follows: Low populations of beet leafhoppers, rare incidence of curly top infection, and an almost complete absence of crown blight in the melon producing area of the Colorado desert in the spring and early summer of 1959 coincided with a good melon crop.
Field heat removed rapidly by Forced-Air Cooling of vine-ripe tomatoes
by R. F. Kasmire, R. A. Brendler, Rene Guillou
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: A one-half cooling time of 47 minutes for eight tons of vine-ripe tomatoes was achieved in a test to develop information on forced-air cooling rates.
Abstract Not Available – First paragraph follows: A one-half cooling time of 47 minutes for eight tons of vine-ripe tomatoes was achieved in a test to develop information on forced-air cooling rates.
Effects of two systemic pesticides on cotton studied in field tests
by Thomas F. Leigh, V. T. Walhood
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Plant growth, fruiting time, and yield of cotton were studied during four years of research with systemic pesticides on cotton in Kern and Fresno counties.
Abstract Not Available – First paragraph follows: Plant growth, fruiting time, and yield of cotton were studied during four years of research with systemic pesticides on cotton in Kern and Fresno counties.
Control of fabric-feeding Insects by neutralizing vitamins in fibers
by Roy J. Pence
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Clothes moths and carpet beetle larvae—the fabric insects of most economic importance—are dependent for normal development upon vitamins contained in woolen fibers and certain vitamins within the B-complex.
Abstract Not Available – First paragraph follows: Clothes moths and carpet beetle larvae—the fabric insects of most economic importance—are dependent for normal development upon vitamins contained in woolen fibers and certain vitamins within the B-complex.
Seasonal changes of micronutrient concentrations in Washington Navel orange leaves
by C. K. Labanauskas, W. W. Jones, T. W. Embleton
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Leaf analysis as a tool for effective diagnosis and correction of micronutrient deficiencies or excesses in citrus requires determination of the seasonal trends of zinc, copper, boron, manganese, and iron concentrations in the leaves.
Abstract Not Available – First paragraph follows: Leaf analysis as a tool for effective diagnosis and correction of micronutrient deficiencies or excesses in citrus requires determination of the seasonal trends of zinc, copper, boron, manganese, and iron concentrations in the leaves.
Enzymes as a feed additive for finishing beef cattle failed to show significant benefit in feed lot trials
by H. T. Strong, M. T. Clegg, J. H. Meyer
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Some 900 steers were included in the first of a series of trials designed to field test feeds, feeding practices, and the reported benefits accruing from the addition of an enzyme to a feed lot finishing ration.
Abstract Not Available – First paragraph follows: Some 900 steers were included in the first of a series of trials designed to field test feeds, feeding practices, and the reported benefits accruing from the addition of an enzyme to a feed lot finishing ration.
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California Agriculture, Vol. 14, No.2

Curly top disorder of melons in desert valleys
February 1960
Volume 14, Number 2

Research articles

Resistance of lygus bugs in seed alfalfa to toxicity of toxaphene
by Oscar G. Bacon, J. E. Swift, Vernon E. Burton
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: In parts of the alfalfa seed producing areas in the southern San Joaquin and Sacramento valleys, toxaphene has lost some of its original toxicity to lygus bugs. Where such toxicity loss occurs, toxaphene applied early in the year generally provides satisfactory control, but when applied late in the season control of the lygus bugs is poor.
Abstract Not Available – First paragraph follows: In parts of the alfalfa seed producing areas in the southern San Joaquin and Sacramento valleys, toxaphene has lost some of its original toxicity to lygus bugs. Where such toxicity loss occurs, toxaphene applied early in the year generally provides satisfactory control, but when applied late in the season control of the lygus bugs is poor.
Resistance to acaricides by European red mite studied in Bartlett pear field plots
by Harold F. Madsen, Peter H. Westigard
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: The incidence of resistance to certain acaricides by the European red mite—Panonychus ulmi (Koch)—has increased severely during the past few seasons. The acaricides were organic phosphate compounds and such specific acaricides as Ovex and other closely related compounds, Chlorobenzilate and Kelthane. All of the observations on European red mite resistance in California have been from the field. Laboratory studies have not been conducted due to the difficulty of rearing this mite species under artificial conditions.
Abstract Not Available – First paragraph follows: The incidence of resistance to certain acaricides by the European red mite—Panonychus ulmi (Koch)—has increased severely during the past few seasons. The acaricides were organic phosphate compounds and such specific acaricides as Ovex and other closely related compounds, Chlorobenzilate and Kelthane. All of the observations on European red mite resistance in California have been from the field. Laboratory studies have not been conducted due to the difficulty of rearing this mite species under artificial conditions.
Larger strawberries through plant breeding
by R. S. Bringhurst, Victor Voth
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Larger strawberries is one of the prime objectives of the current plant breeding program because harvesting cost decreases as frun. size increases.
Abstract Not Available – First paragraph follows: Larger strawberries is one of the prime objectives of the current plant breeding program because harvesting cost decreases as frun. size increases.
Late infection of curly top in field melons in producing areas of desert valleys
by R. A. Flock, E. F. Laird, R. C. Dickson
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Low populations of beet leafhoppers, rare incidence of curly top infection, and an almost complete absence of crown blight in the melon producing area of the Colorado desert in the spring and early summer of 1959 coincided with a good melon crop.
Abstract Not Available – First paragraph follows: Low populations of beet leafhoppers, rare incidence of curly top infection, and an almost complete absence of crown blight in the melon producing area of the Colorado desert in the spring and early summer of 1959 coincided with a good melon crop.
Field heat removed rapidly by Forced-Air Cooling of vine-ripe tomatoes
by R. F. Kasmire, R. A. Brendler, Rene Guillou
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: A one-half cooling time of 47 minutes for eight tons of vine-ripe tomatoes was achieved in a test to develop information on forced-air cooling rates.
Abstract Not Available – First paragraph follows: A one-half cooling time of 47 minutes for eight tons of vine-ripe tomatoes was achieved in a test to develop information on forced-air cooling rates.
Effects of two systemic pesticides on cotton studied in field tests
by Thomas F. Leigh, V. T. Walhood
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Plant growth, fruiting time, and yield of cotton were studied during four years of research with systemic pesticides on cotton in Kern and Fresno counties.
Abstract Not Available – First paragraph follows: Plant growth, fruiting time, and yield of cotton were studied during four years of research with systemic pesticides on cotton in Kern and Fresno counties.
Control of fabric-feeding Insects by neutralizing vitamins in fibers
by Roy J. Pence
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Clothes moths and carpet beetle larvae—the fabric insects of most economic importance—are dependent for normal development upon vitamins contained in woolen fibers and certain vitamins within the B-complex.
Abstract Not Available – First paragraph follows: Clothes moths and carpet beetle larvae—the fabric insects of most economic importance—are dependent for normal development upon vitamins contained in woolen fibers and certain vitamins within the B-complex.
Seasonal changes of micronutrient concentrations in Washington Navel orange leaves
by C. K. Labanauskas, W. W. Jones, T. W. Embleton
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Leaf analysis as a tool for effective diagnosis and correction of micronutrient deficiencies or excesses in citrus requires determination of the seasonal trends of zinc, copper, boron, manganese, and iron concentrations in the leaves.
Abstract Not Available – First paragraph follows: Leaf analysis as a tool for effective diagnosis and correction of micronutrient deficiencies or excesses in citrus requires determination of the seasonal trends of zinc, copper, boron, manganese, and iron concentrations in the leaves.
Enzymes as a feed additive for finishing beef cattle failed to show significant benefit in feed lot trials
by H. T. Strong, M. T. Clegg, J. H. Meyer
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Some 900 steers were included in the first of a series of trials designed to field test feeds, feeding practices, and the reported benefits accruing from the addition of an enzyme to a feed lot finishing ration.
Abstract Not Available – First paragraph follows: Some 900 steers were included in the first of a series of trials designed to field test feeds, feeding practices, and the reported benefits accruing from the addition of an enzyme to a feed lot finishing ration.

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