California Agriculture, November-December 1981
Volume 35, Number 11
peer-reviewed research articles
Pesticides may reduce lettuce yield
by Frank V. Sances , Nick C. Toscano , Marshall W. Johnson , Larry F. LaPré
Insecticides tested on lettuce as weekly or twice- weekly preventive treatments reduced yields by affecting plant physiology.
Toxic plants as possible human teratogens
by Wendell W. Kilgore , Donald G. Crosby , Arthur L. Craigmill , Norman K. Poppen
Circumstantial evidence points to lupine toxin in goat's milk as cause of human birth defects.Researchers suspect that a substance in milk from goats foraging on a range lupine, Lupinus latifolius, may cause human birth defects.
Agricultural water conservation in simplified perspective
by David C. Davenport , Robert M. Hagan
If California is to conserve water, it must curtail irrecoverable losses to the air and to saline sinks.The need to further develop, distribute, and conserve California's water supply takes on new meaning in the face of increasingly com- petitive demands and the probability of future droughts.
Removing leaf litter doesn't protect oranges from frost
by Richard L. Snyder , John E. Pehrson , Jerry L. Hatfield
Raking litter from beneath the trees has little influenceon air temperature and is not recommended for frost protection.
Comparison of high-energy crops for alcohol production
by F. Jack Hills , Stanley S. Johnson , Shu Geng , Akbar Abshahi , Gary R. Peterson
Corn showed up best in this trial, but sugarbeet could compete if growing costs were reduced.Corn had the lowest potential alcohol yieldper acre but also the lowest production cost per unit of alcohol of the four crops compared.
Computer pre-order food co-ops offer savings in return for time and labor
by William Hohn , Jean Eastman , Robert Sommer
Buying clubs use outside computer services to order food and merchandise from wholesalers.Food-buying club members ofpre-order co-opsput in timeandeffort but gain savings through wholesale purchasing.
Applications of remote sensing to California rice production and marketing
by Garrett D. Maier
Climatic conditions and different cultural practices make it difficult to assess foreign rice acreage by remote sensing.World rice acreage data from Landsat probabb would not change California growers' production decisions but might affect marketing.
editorial, news, letters & science briefs
Setting research priorities
by L. N. Lewis