Frost control tests with lettuce and alfalfa: Blanket of ice keeps plants from freezing
AuthorFrank E. Robinson
Hilgardia 24(2):7-7. DOI:10.3733/ca.v024n02p7. February 1970.
Icicles visible in photo above, were hanging from lettuce plants that had been sprinkled for frost protection by ice-coating. Photo to right, above, shows ice beginning to melt off the frost-protected lettuce heads. Right photo shows lettuce plants on a 24-inch grid, coated with ice. Lower photo to right shows uniformity of lettuce heads produced on flat soil surface with grid system. Photo below shows alfalfa plants encased in one-half inch of ice for frost protection.
Also in this issue:San Joaquin Center research emphasis: People's needs
Liquid scintillation counter aids pesticide research in soils at U. C. Riverside
Ethrel effects on fruit ripening of peppers
An economic analysis questions: Central sorting of cannery tomatoes
Simazine for weed control in orchards
Effects of soil moisture asparagus at two conditions on nitrogen levels
Bulls vs… steers conventional and Russian castrates amd effects of stilbestrol
Crop adaptation to high soil-water conditions
The effects of dates of harvest operations on yield and quality of pink beans