Zobrazeno 1 - 10
of 23
pro vyhledávání: '"P. W. Tracy"'
Publikováno v:
Soil Health Series
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6ecc9dfdf2705b01707b33018fcd48e
https://doi.org/10.1002/9780891189831.ch1
https://doi.org/10.1002/9780891189831.ch1
Publikováno v:
Journal of Plant Nutrition. 18:2579-2594
Soil erosion and moisture retention are major concerns of soybean growers. Conservation tillage provides residue cover to reduce soil loss and water evaporation. This study was conducted on a Tiptonville silt loam near Portageville, MO, USA. to deter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::393821db1ca375d172a331af6675e1cb
https://doi.org/10.1080/01904169509365086
https://doi.org/10.1080/01904169509365086
Publikováno v:
Plant and Soil. 176:235-241
To avoid late summer drought, soybean [Gylcine max (L) Merrill] producers in many southern and border states of the USA modify their cropping systems. Options include use of unadapted cultivars and changing planting dates. Because root function is im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5121182bfc1a728169cd3fc62c5d1f77
https://doi.org/10.1007/bf00011787
https://doi.org/10.1007/bf00011787
Autor:
P. W. Tracy, S. G. Hefner
Publikováno v:
Journal of Production Agriculture. 8:66-69
Any overwatering associated with surface furrow irrigation can reduce N fertilizer use efficiency. This 3-yr study was conducted to determine whether an irrigation and fertilizer placement system that puts water and N fertilizer in adjacent furrows c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b11a609a35fc1a418aad926d8715e95d
https://doi.org/10.2134/jpa1995.0066
https://doi.org/10.2134/jpa1995.0066
Publikováno v:
Journal of Production Agriculture. 8:61-65
Concern for S deficiencies of corn (Zea mays L.) is common among producers and fertilizer dealers in the Midwest. This concern results from emphasis on high yields with subsequent large S needs, accompanied by a decreasing S supply from incidental so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8af9980b25acb61ff2e6c4f16f23f184
https://doi.org/10.2134/jpa1995.0061
https://doi.org/10.2134/jpa1995.0061
Autor:
W. P. Sappenfield, P. W. Tracy
Publikováno v:
Journal of Production Agriculture. 5:551-555
Short-season cotton (Gossypium hirsutum L.) production systems may be more important in the northern Mississippi River Delta than in areas further south with a longer growing season. The purpose of this research was to evaluate cotton yield response
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5edce914c627cfe20686b7570fbd2f7b
https://doi.org/10.2134/jpa1996.0551
https://doi.org/10.2134/jpa1996.0551
Publikováno v:
Journal of Plant Nutrition. 15:1435-1448
The ability of a hand‐held chlorophyll meter (SPAD‐502 Chlorophyll Meter3, Minolta Camera Co., Ltd., Japan) to determine the N status of cotton (Gossypium hirsutum L.) was studied at field sites in Alabama and Missouri. Meter readings on the uppe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3af39187a0b2957941f1c67ee79e7cf8
https://doi.org/10.1080/01904169209364409
https://doi.org/10.1080/01904169209364409
Autor:
S. G. Hefner, P. W. Tracy
Publikováno v:
Journal of Production Agriculture. 4:541-545
(.)Soil- and plant-N concentrations indicated most efficient N application for furrow-irrigated rice occurred when the majority of N was applied 4 wk after planting, with no advantage to N inputs later than 14 d post-panicle differentiation(.)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abe88bf806d79969502f9acdc36e48a5
https://doi.org/10.2134/jpa1991.0541
https://doi.org/10.2134/jpa1991.0541
Autor:
P. W. Tracy, S. G. Hefner
Publikováno v:
Journal of Production Agriculture. 4:536-540
(.)Nitrogen was applied at 180 lb/acre at 4 wk after planting (4WAP) with and without dicyandiamide; a 1:1:1 ratio 4WAP, panicle differentiation (PD) and 14 post-PD; and a 4:1:1 ratio at 4WAP, PD and 14 d post-PD. Soil and plant samples were analyzed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01cd3a7fe0fc7ab68bbeec97be52c0dd
https://doi.org/10.2134/jpa1991.0536
https://doi.org/10.2134/jpa1991.0536
Publikováno v:
Soil Science Society of America Journal. 54:1630-1634
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4504596251105a7621588ae3a289b88
https://doi.org/10.2136/sssaj1990.03615995005400060020x
https://doi.org/10.2136/sssaj1990.03615995005400060020x