Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Walter C. Jacob"'
Publikováno v:
American Potato Journal. 26:241-255
1. Three years’ results are reported for a 3N, 3P, 3K factorial fertilizer experiment with and without irrigation, in which 3 or 4 varieties of potatoes were grown each year. 2. Green Mountain variety was grown each year and the three years indicat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::beaee19b2bfce3d4f6f386172757a86b
https://doi.org/10.1007/bf02883859
https://doi.org/10.1007/bf02883859
Publikováno v:
American Potato Journal. 29:292-296
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::905a8e792038d156803cd354b4bb2b39
https://doi.org/10.1007/bf02885266
https://doi.org/10.1007/bf02885266
Autor:
Walter C. Jacob, M. B. Russell
Publikováno v:
American Potato Journal. 29:136-141
1 Various types of tillage implements including the killifer sub-soil chisel, the jostler subsoil cultivator, the TNT subsoil plow, the conventional moldboard plow and the disk harrow were evaluated as to their influence on the yield of Irish Cobbler
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::510112f2b741797db5e3a8f74d7291e0
https://doi.org/10.1007/bf02881661
https://doi.org/10.1007/bf02881661
Autor:
Walter C. Jacob, J. Howard Ellison
Publikováno v:
American Potato Journal. 29:241-252
Green Mountain and Katahdin potatoes were planted at monthly intervals from April through July in 1948 and at three week intervals from April to June in 1949. Various cultural factors, such as irrigation, vine killing and time of harvest, were studie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b84247f47b807d361a58c7d170a2f68
https://doi.org/10.1007/bf02890656
https://doi.org/10.1007/bf02890656
Publikováno v:
American Potato Journal. 28:721-727
1. Certain scab-resistant and susceptible potato varieties were grown on permanent plots ranging in pH from 4.3 to7.6. Four years’ results were presented. 2. Green Mountain, Irish Cobbler, Katahdin and Mohawk showed approximately the same susceptib
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ffe2b61ea802d98bccd1488f3edf1a4
https://doi.org/10.1007/bf03030755
https://doi.org/10.1007/bf03030755
Autor:
Walter C. Jacob, J. Howard Ellison
Publikováno v:
American Potato Journal. 31:141-151
Permanent fertility plots, involving three levels each of N, P and K, in factorial arrangement with and without irrigation, were used to study the fertilizer requirements of six potato varieties. Four years’ results are reported. The soil is a Sass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbddb4bbc1fe9d95158d40bbb5e7570d
https://doi.org/10.1007/bf02859994
https://doi.org/10.1007/bf02859994
Publikováno v:
American Potato Journal. 30:85-88
Spectrophotometric determinations on three different potato melanin preparations were compared. Results of these analyses would indicate that the two melanins, one obtained from fresh raw potato juice only and one from potato juice plus tyrosine, are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b46eed575438301509fa0ba6b308aedf
https://doi.org/10.1007/bf02859962
https://doi.org/10.1007/bf02859962
Publikováno v:
Soil Science Society of America Journal. 16:156-159
The objectives of the investigation were to determine the effects of long-time differential manure applications on physical properties, organic matter, and nitrogen content; to provide a “bench-mark” for future studies on the permanence of the ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6905ff68e1782e3b16e1ebe9f91ccf7
https://doi.org/10.2136/sssaj1952.03615995001600020012x
https://doi.org/10.2136/sssaj1952.03615995001600020012x
Publikováno v:
Soil Science. 68:113-120
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::464fcb3fc8d7ab4ecc87af91b9140b15
https://doi.org/10.1097/00010694-194908000-00002
https://doi.org/10.1097/00010694-194908000-00002
Autor:
Walter C. Jacob, L. A. Dean
Publikováno v:
American Potato Journal. 27:439-445
The effect of rate of phosphorus application on utilization of phosphorus by Irish Cobbler and Green Mountain varieties of potatoes was studied. The percentage of phosphorus in the plant derived from the fertilizer increased with higher rates of appl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe56f68e224ece0a867230a7fb622b22
https://doi.org/10.1007/bf02854254
https://doi.org/10.1007/bf02854254