The effects of soil moisture (-2 to -17 bars), temperature (5 to 20°C), bulk density (0.90 to 1.40 gm/cm³) and texture (Bashaw silty clay and Woodburn silt loam) on germination and seedling emergence of three varieties (Yamhill, Bezostaya, Kirac 66) of wheat (Triticum Aestivum, L.) were evaluated under laboratory and...
Forest harvest persists as one of the most globally important industries, and crucially provides raw wood products for both building and fuel materials. Mechanistically complex abiotic and biotic processes curb ecosystem recovery following timber harvest and it is of great importance to understand the effects of this practice on biogeochemical...
Nitrogen (N), phosphorus (P), and sulfur (S) fertilization
trials with Stephens winter wheat (Triticum aestivum L.) were
conducted on the Columbia Plateau under minimum and no tillage
conditions. The crop rotation was either wheat-summer fallow
(summer fallow) or wheat-wheat (recrop).
Nitrogen variables included: N rates, N timing, and N
source...
The purpose of this study was to evaluate differences between winter wheat varieties in response to nitrogen fertilizer. Seven nitrogen fertilizer rate x variety factorial experiments were conducted in several environments. Dry matter and nitrogen yields at boot, soft dough, and harvest and grain yield components were measured. The yield...
Experiments were conducted to compare differences in P uptake
characteristics between two winter wheat cultivars Stephens and
Yamhill (Triticum aestivum L) as related to root morphologies.
Root length, root surface area and mean root radius were compared.
Plant roots and shoots were separately analyzed for P content.
The cultivars were...