Nitrification of fertilizers: Mean winter temperature of 45°F prevalent in state's farm areas not sufficiently low to prevent substantial oxidation
Authors
K. B. TylerF. E. Broadbent
G. N. Hill
Authors Affiliations
K. B. Tyler is Assistant Olericulturist, University of California, Riverside; F. E. Broadbent is Associate Professor of Soil Microbiology, University of California, Davis; G. N. Hill is Laboratory Technician, University of California, Davis.Publication Information
Hilgardia 13(7):10-10. DOI:10.3733/ca.v013n07p10. July 1959.
PDF of full article, Cite this article
Abstract
The validity of the assumption–that nitrogen losses, by leaching, are small when ammonium fertilizers are applied in the fall–was tested in a series of incubation experiments.
Tyler K, Broadbent F, Hill G. 1959. Nitrification of fertilizers: Mean winter temperature of 45°F prevalent in state's farm areas not sufficiently low to prevent substantial oxidation. Hilgardia 13(7):10-10. DOI:10.3733/ca.v013n07p10
Also in this issue:
Frozen strawberry competition California's: Slight interregional advantage could be reduced by small changes in the cost structures in competing regionsGibberellin sprays on celery: Field trials in southern California revealed differences in results due to spray concentrations, timing, and to season
Alfalfa hay conditioning tests: Relative drying rates, field losses, chemical composition of the hay, and feeding response of sheep studied in '58 season
Clover seed chalcid in alfalfa: No effective chemical control measures yet available for use against insect causing heavy losses to alfalfa seed growers
Brown spot of bartlett pears: Disorder of canning pears a direct result of impact bruising of firm fruit during the handling operations after harvest
Mechanical potato harvesting: Studies conducted in Kern County indicated less injury to potatoes when harvested by machine than by hand harvesting
Area-wide drainage: Herringbone pattern and interception type systems solve drainage problems
Integrated control measures: Experiments in lemon grove near Carpinteria showed selective miticides to be compatible with biological control of red scale
Filbertworm control: Experimental insecticides show promise in tests on northern California walnuts
Application of prior research: Accumulated information obtained by research often provides ready solutions to many problems of agricultural production
Parasites of the black scale, Saissetia oleae, in Africa