Výsledky vyhledávání - "D. C. Penney"

Economics of phosphorus fertilization of barley as influenced by concentration of extractable phosphorus in soil

Autor: M. Nyborg, D. H. Laverty, D. C. Penney, Sukhdev S. Malhi, G. Mumey

Publikováno v: Communications in Soil Science and Plant Analysis. 30:1789-1795

Field experiments were conducted at 60 sites in central and north‐central Alberta to determine the yield response of barley (Hordeum vulgare L.) to phosphorus (P) fertilizer and economics of P application on soils with different concentrations of e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5760d19cf02c6e78326092baa94a25d
https://doi.org/10.1080/00103629909370330

Zobrazit plný text záznamu

Yield and nutrient mapping for site specific fertilizer management

Autor: T. W. Goddard, L. Kryzanowski, D. C. Penney, S. C. Nolan, R. C. McKenzie

Publikováno v: Communications in Soil Science and Plant Analysis. 27:1265-1279

Soil sampling using a 67 m × 67 m grid was carried out at four locations in conjunction with a precision (site‐specific) farming study. The four locations were on undulating to rolling topography, distributed across the Brown, Dark Brown and Black

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::43f8b69d65860804613706953b7f0567
https://doi.org/10.1080/00103629609369631

Zobrazit plný text záznamu

Response of eight Canadian spring wheat (Triticum aestivum L.) cultivars to copper: Copper content in the leaves and grain

Autor: K. G. Briggs, D. C. Penney, J. O. Owuoche, Gregory J. Taylor

Publikováno v: Canadian Journal of Plant Science. 75:405-411

Concentrations of copper (Cu) in the youngest fully emerged leaves (YFEL) and grain of eight widely grown Canadian spring wheat (Triticum aestivum L.) cultivars, Biggar, Columbus, Conway, Katepwa, Laura, Oslo, Park and Roblin, were determined. Leaves

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2de71a76d951cf16cb6f5db1ab5c2545
https://doi.org/10.4141/cjps95-068

Zobrazit plný text záznamu

GPS System Integration and Field Approaches in Precision Farming

Autor: M.E. Cannon, H. Gehue, D. C. Penney, T. W. Goddard, Gérard Lachapelle

Publikováno v: Navigation. 41:323-335

Two phases of a precision farming project are described. Phase I consists of the collection of data from four test fields across Alberta using differential GPS (DGPS I combined with crop yield monitors and electromagnetic f EM) ground conductivity me

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ca33867d9975ff7953d64f2215378537
https://doi.org/10.1002/j.2161-4296.1994.tb01883.x

Zobrazit plný text záznamu

Response of eight Canadian spring wheat (Triticum aestivum L.) cultivars to copper: Pollen viability, grain yield plant−1 and yield components

Autor: Gregory J. Taylor, K. G. Briggs, D. C. Penney, J. O. Owuoche

Publikováno v: Canadian Journal of Plant Science. 74:25-30

Eight Canadian spring wheat (Triticum aestivum L.) cultivars, Katepwa, Roblin, Park, Laura, Conway, Oslo, Columbus and Biggar, were tested in the field for copper (Cu) use efficiency. The experiment was conducted at Stony Plain, Alberta on an Orthic,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fba003e3429da95d659eff36a7d3ea6c
https://doi.org/10.4141/cjps94-006

Zobrazit plný text záznamu

Yield response of barley and rapeseed to K fertilizer: Influence of soil test K level and method of placement

Autor: M. Nyborg, Sukhdev S. Malhi, D. R. Walker, D. C. Penney, J. A. Robertson, L. Kryzanowski

Publikováno v: Communications in Soil Science and Plant Analysis. 24:2271-2280

Field experiments were conducted in central Alberta to determine the yield response of barley and rapeseed to KCl on soils varying in soil test K levels and to evaluate three methods of K placement for effectiveness. The soil test K extractant was 1M

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d69d17b181416944950148cf3d025774
https://doi.org/10.1080/00103629309368954

Zobrazit plný text záznamu

Yield response of barley and rapeseed to P fertilizer: Influence of soil test P level and method of placement

Autor: S. S. Malhi, M. Nyborg, D. C. Penney, L. Kryzanowski, J. A. Robertson, D. R. Walker

Publikováno v: Communications in Soil Science and Plant Analysis. 24:1-10

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f69e7e90f541dd9f37964d00496bb059
https://doi.org/10.1080/00103629309368777

Zobrazit plný text záznamu

Effect of rate and source of N fertilizer on yield, quality and N recovery of bromegrass grown for hay

Autor: L. Kryzanowski, S. S. Malhi, D. C. Penney

Publikováno v: Fertilizer Research. 25:159-166

Field experiments were conducted at two locations in north-central Alberta to determine the effect of N rate and source on dry matter and protein yield, concentration of protein and NO3—N, recovery of applied N and N use efficiency of smooth bromeg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4cf7798323cc2da3ffb26f6c37db387b
https://doi.org/10.1007/bf01161395

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání