Tests on bees

Also in this issue:

Organic phosphate insecticides: Results obtained in 1947 with phosphate insecticides by the Division of Entomology and Parasitology at Berkeley and Davis

Pacific coast pears: Production trends, utilization, export needs and price prospects

Grape bud mite tests

Red spiders on grapes

Concentrate sprays: As applied to deciduous fruit trees

Forage plants for a drouth year: Sudan grass, grain sorghums, summer legumes, and alfalfa

Automatic temperature: Control recommended for improved wine-growing

Aphids, mites on pears, prunes

Fattening turkeys: Recommendation for use of estrogens withheld

Melon insects and mites

Feeder lambs: Research seeks cause of break among lambs on irrigated pastures

Walnut aphid

Olive scale

Fig scale

Black scale on olives

Grape leafhopper tests

Hexaethyl tetraphosphate thermal aerosol fog effective against grape leafhopper

Field tests on some pests of grapes

California cotton insects

Greenhouse plants

Alfalfa butterfly tests

Mosquito larvae

Spring dwarf nematode

The absorption of ions by citrus and walnut seedlings