Management of: Second growth stands of Douglas-fir

Also in this issue:

Cotton price and production: Lower total farm earnings in 1959 prospect for California growers whether operating under Allotment Plan A or Plan B

Commercial cut flower industry: Further production increases without substantial increase in acreage may cause changes in successful marketing practices

Gibberellins on chrysanthemum: Properly timed applications of potassium gibberellate sprays improved flower shape of two commercial varieties of pompon

Aster yellows virus in celery: Spray treatment of natural breeding area of aster leafhopper controls spread of important virus disease to celery fields

Summer-planted solana berries: Tests in southern California and also at Davis show early summer plantings of new strawberry yield with variety Lassen

Herbicides on rangeland forage: Reduction of plant competition during seedling establishment on annual ranges by application of pre-emergence herbicides

Herbicides on white potatoes: Weed control field trials with seven herbicides conducted in San Bernardino County with varying results in effectiveness

Codling moth investigations: Severe infestations in northern California walnut orchards in 1958 followed conditions favorable to the second brood

Parathion resistant mites: Performance of new acaricides evaluated in trials against strain of mites known to be resistant to phosphate compounds

Poultry house cleanout machine: Manure pickup device designed for use in obstruction-free area under strings of poultry cages shows high efficiency

Nitrate concentration and ion balance in relation to citrus nutrition