Calag Archive

Biological control of fiddleneck

by Dan James Pantone, Stephen M. Brown, Christopher Womersley

Abstract

A nematode, a midge, and at least four fungi attack fiddleneck, a weed toxic to livestock.

Beneficials and insecticides in citrus thrips management

by Tom S. Bellows, Joseph G. Morse, Demetrious G. Hadjidemetriou, Yutaka Iwata, Carol Richardson

Abstract

Varying residual effects of citrus thrips pesticides could be important in management programs using biological controls.

Planning ahead for leafminer control

by John T. Trumble

Abstract

A combination of parasites and compatible insecticide applications can keep leafminers in check and delay the development of resistance.

Fuchsia gall mite management

by Carlton S. Koehler, William W. Allen, Laurence R. Costello

Abstract

Fuchsias highly susceptible to the mite require both pruning and spraying, but growing mite-resistant fuchsias is an alternative.

Response to incentive pay among vineyard workers

by Gregory Encina Billikopf

Abstract

Vineyard workers consistently differed in pruning speed but didn't always respond to incentive pay.

Fungicides for control of powdery mildew of melons

by Albert O. Paulus, Faustino Munoz, Jerry Nelson, Wayne L. Schrader, Harold W. Otto

Abstract

Two registered fungicides effectively controlled powdery mildew in cantaloupe and Crenshaw melons.

Environmental chemistry of selenium

by Richard G. Burau

Abstract

The shallow ponds that make up the 1,200-acre Kesterson Reservoir near Los Banos, focal point of a critical water issue in California, are visible in the upper center of this aerial shot by Max Clover. At right is the San Luis Drain, which feeds Kesterson with brackish selenium-bearing wastewater from the San Joaquin Valley Westlands Irrigation District 80 miles to the south.

The drainage of agricultural wastewater from the rich San Joaquin Valley — a problem that has vexed farmers, scientists, and politicians for many years — reached a climax early this year, when a halt was ordered in the delivery of federal irrigation water to 42,000 acres of land in the Westlands area of the Valley. Behind this action was the detection of high levels of selenium in Kesterson Reservoir, terminus for the 80-mile-long San Luis Drain, which carries saline wastewater from the Westlands Irrigation District to Kesterson. Built in 1971, the 12 shallow evaporation ponds at Kesteron supported a variety of fish and wildlife. Mortalities and deformities attributed to accumulated selenium attracted national attention. In this article, Dr. Richard Burau, Professor of Soil Chemistry in the Department of Land, Air, and Water at UC Davis, reviews what is known about selenium and how it enters the food chain.

Seed extract shows promise in leafminer control

by Ursula Stein, Michael P. Parrella

Abstract

Neem, a natural insecticide from a tropical tree, may help control the leafminers in chrysanthemums.

Polyester covers protect vegetables from whiteflies and virus disease

by Eric T. Natwick, Alfonso Durazo

Abstract

Spun-bonded polyester row covers kept whitefly from squash plants, protecting them from viruses.

The boll weevil may be spreading

by C. A. Beasley, T. J. Henneberry

Abstract

Potential spread of the weevil in lower desert areas may require stricter control measures.

Canola meal can replace cottonseed meal in dairy diets

by Edward J. DePeters, Donald L. Bath

Abstract

High-producing cows in early lactation performed equally well with canola meal or cottonseed meal as the protein supplement.

Viruses cause heavy melon losses in desert valleys

by Stephen T. Nameth, Franklin F. Laemmlen, J. Allan Dodds

Abstract

Three mosaic viruses decreased 1984 spring melon yields 40 to 50 percent in southern California.

Cabbage yield and nutrient uptake

by Norman C. Welch, Kent B. Tyler, David Ririe

Abstract

Splitting nitrogen applications or adding a denitrification inhibitor improved cabbage yields.

Biological control of fiddleneck

by Dan James Pantone, Stephen M. Brown, Christopher Womersley

Abstract

A nematode, a midge, and at least four fungi attack fiddleneck, a weed toxic to livestock.

Beneficials and insecticides in citrus thrips management

by Tom S. Bellows, Joseph G. Morse, Demetrious G. Hadjidemetriou, Yutaka Iwata, Carol Richardson

Abstract

Varying residual effects of citrus thrips pesticides could be important in management programs using biological controls.

Planning ahead for leafminer control

by John T. Trumble

Abstract

A combination of parasites and compatible insecticide applications can keep leafminers in check and delay the development of resistance.

Fuchsia gall mite management

by Carlton S. Koehler, William W. Allen, Laurence R. Costello

Abstract

Fuchsias highly susceptible to the mite require both pruning and spraying, but growing mite-resistant fuchsias is an alternative.

Response to incentive pay among vineyard workers

by Gregory Encina Billikopf

Abstract

Vineyard workers consistently differed in pruning speed but didn't always respond to incentive pay.

Fungicides for control of powdery mildew of melons

by Albert O. Paulus, Faustino Munoz, Jerry Nelson, Wayne L. Schrader, Harold W. Otto

Abstract

Two registered fungicides effectively controlled powdery mildew in cantaloupe and Crenshaw melons.

Environmental chemistry of selenium

by Richard G. Burau

Abstract

Seed extract shows promise in leafminer control

by Ursula Stein, Michael P. Parrella

Abstract

Neem, a natural insecticide from a tropical tree, may help control the leafminers in chrysanthemums.

Polyester covers protect vegetables from whiteflies and virus disease

by Eric T. Natwick, Alfonso Durazo

Abstract

Spun-bonded polyester row covers kept whitefly from squash plants, protecting them from viruses.

The boll weevil may be spreading

by C. A. Beasley, T. J. Henneberry

Abstract

Potential spread of the weevil in lower desert areas may require stricter control measures.

Canola meal can replace cottonseed meal in dairy diets

by Edward J. DePeters, Donald L. Bath

Abstract

High-producing cows in early lactation performed equally well with canola meal or cottonseed meal as the protein supplement.

Viruses cause heavy melon losses in desert valleys

by Stephen T. Nameth, Franklin F. Laemmlen, J. Allan Dodds

Abstract

Three mosaic viruses decreased 1984 spring melon yields 40 to 50 percent in southern California.

Cabbage yield and nutrient uptake

by Norman C. Welch, Kent B. Tyler, David Ririe

Abstract

Splitting nitrogen applications or adding a denitrification inhibitor improved cabbage yields.

Calag Archive

Calag Archive

Peer-reviewed research and review articles

News and opinion

General Information

Peer-reviewed research and review articles

News and opinion

General Information