Zobrazeno 1 - 10 of 15 pro vyhledávání: '"W. L. Parks"'
3
Some factors influencing yield and cation sum and ratios in corn
Autor: R. N. Gallaher, W. L. Parks, L. M. Josephson
Publikováno v: Communications in Soil Science and Plant Analysis. 6:51-61
Maximum yields of corn depends on adequate and balanced supplies of essential nutrients. In order to elucidate some of the factors which influence yields, a study was initiated to evaluate K, Ca, and Mg balances as influenced by seasonal variation, a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60286e0b22054a25474d40523c44033a
https://doi.org/10.1080/00103627509366545
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4
Utilizing Drought-Days in Evaluating Irrigation and Fertility Response Studies
Autor: W. L. Parks, Jack L. Knetsch
Publikováno v: Soil Science Society of America Journal. 24:289-293
It is expected that a crop grown during a year of insufficient moisture will economically require less fertilizer than a similar crop grown with an ample supply of moisture. Likewise, crop response to supplemental irrigation would be greater during a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5784428bffa470ddde2e0f5e93c97f0f
https://doi.org/10.2136/sssaj1960.03615995002400040023x
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7
Effects of Tillage Methods on Soil Nutrient Distribution, Plant Nutrient Absorption, Stand, and Yields of Snap Beans and Lima Beans1
Autor: C. A. Mullins, F. D. Tompkins, W. L. Parks
Publikováno v: Journal of the American Society for Horticultural Science. 105:591-593
A 3 year (1976-1978) tillage study was conducted with snap beans (Phaseolus vulgaris L.) and lima beans (P. lunatus L.). Treatments included 2 no-till systems where furrows were opened with a fluted coulter or a vibratory unit, 2 reduced tillage meth
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bde771783d1752206afd3a80fa852381
https://doi.org/10.21273/jashs.105.4.591
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9
Influence of Soil Temperature and Nitrogen on Ryegrass Growth and Chemical Composition
Autor: W. L. Parks, W. B. Fisher
Publikováno v: Soil Science Society of America Journal. 22:257-259
Annual ryegrass was grown under controlled conditions at different rates of nitrogen fertilization. Alternating periods of 16 hours of light and 8 hours of darkness were maintained in growth chambers set at 10°, 20°, and 30°C. The ryegrass respond
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e095c11db6f51e009f048c55da75b2d4
https://doi.org/10.2136/sssaj1958.03615995002200030020x
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