Soil profiles identify series: Basic soil surveys establish classifying characteristics and indicate selection of most efficient agricultural use
AuthorLloyd N. Brown
Author AffiliationsLloyd N. Brown is Extension Soils Specialist, University of California, Berkeley.
Hilgardia 11(3):11-12. DOI:10.3733/ca.v011n03p11. March 1957.
Differences in the surface 6' of soil—in structure, color, texture, reaction, content of salts or humus, mineralogical composition—usually have agricultural significance and separate soils into different series or identifying units of classification. Nearly 500 soil series have been identified in California.
Also in this issue:Use of marketing contracts: Farmer cooperatives in California usually require contracts with members to effectively integrate marketing operations
Serpentine leaf miner damage: Spinach losses in 1956 recall cyclic attacks by pests and need of both insecticides and natural enemies for control
New carnation pests: Bud mite and leaf miner found in California may cause serious problems
New materials for codling moth: New compounds evaluated for control of codling moth should resistance to DDT be developed by the pest in California
Soft scales on walnut in 1956: Increase in soft scale populations on walnuts in northern California effected by several factors in complex problem
Smog reduces seedling growth: Zutano avocado seedling growth affected by synthetic smog of ozone and hexene vapor in fumigation chamber experiment
Tree nutrient sprays: Results of foliar sprays to supplement deficiencies affected by fruit variety
Soil sterilized by irradiation: Sterilization of soil by exposure to an electron beam offers new tool for research on chemistry and microbiology of soil
New Satsuma mandarin strains: Fruit of nucellar lines of mandarin-orange color earlier and have higher per cent of soluble solids than the parent line
The biology of the garden centipede, Scutigerella immaculata