This is a bibliography of the work of T. L. Jackson, who conducted research at the North Willamette Research and Experiment Center. It is limited to those Extension publications and research reports that addressed the nutrient needs of fresh market and processed vegetables.
T cells are one of the key cells in the immune system. Although they are
not the first line of defense against a pathogen, their functions can greatly enhance
the phagocytosis and destruction of pathogens as well as the development of
antibody responses. Furthermore, even when responding T cells have...
Incubation experiments with an acid poorly drained soil have
shown that the application of neutral soluble salts influenced the level
of extractable Mn. The application of a salt which lowered the soil
pH either increased the extractable Mn or retarded the oxidation
and/or fixation of extractable Mn. This effect was...
The effect of soil temperature and soil water suction on the rate
of phosphorus uptake and growth rate of wheat (Triticum aestivum
Host) was studied.
Plants were grown in perlite slabs
separated from an osmotic solution by a semi-permeable membrane.
Measurements were made at temperatures of 10.0, 18.3,...
The objectives of this study were to evaluate and compare the
availability of native and applied P in Central Oregon pumice soils
with that in Willamette valley soils and calcareous soils from Eastern
Oregon. The experimental work to meet these objectives included
laboratory and greenhouse studies.
The removal of P...
Experiments were established on a Warden soil on Lower
Klamath Lake area to evaluate the effect of Mn and Cu, and Band
applications of ammonium sulfate on the uptake of micronutrients and
response from Mn and Cu applied for the production of small grain
Band application of ammonium sulfate...
Nitrogen is one of the most important nutrients influencing
potato yields. The potential for environmental pollution from N is
also greater than for other nutrients added as fertilizer because
excessive amounts applied are subject to leaching into drainage water.
The purpose of this study was to improve N fertilizer recommendations...
There are two major problems associated with soil acidity and
lime response investigations:
A. Determining how much lime (100% "available" CaCO₃ equivalent)
is required to raise a soil pH (or degree of acidity) from its
existing level to a specified level - presumably where need for
lime is eliminated.
The potassium status of selected soils from central and eastern Oregon, that have shown a wide range in response from potassium was investigated. The silt and clay minerals were identified using X-ray crystallography. The potassium extracted by water, NH₄OAc, and HNO₃ was evaluated on the total soil and on the...