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Filtering by: Subject Plants, Effect of nitrates on Committee Member Powelson, Mary Degree Field Horticulture

Nitrogen dynamics in field grown comice pears

Creator:

Sanchez, Enrique E.

Abstract:

The dynamics of N was studied in field grown Comice/Provence quince BA29 pears in Medford, Oregon. Total tree biomass, N content, and ¹⁵N evaluations suggest that young pears require little N (48 kg N ha⁻¹ yr⁻¹). About 45% of total tree N present in dormant trees was remobilized into new...

Resource Type:

Dissertation

Full Text:

Literature Cited 46 CHAPTER 4. EFFECT OF TREE NITROGEN STATUS AND LEAF CANOPY POSITION ON THE
Influence of nitrogen form ratio and calcium on greenhouse and field performance of watermelon

Creator:

Lamb, Michael J.

Abstract:

Watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai var. Crimson Sweet) was seeded in a commercial peat mix in multicell containers (72 cells-tray⁻¹, 40 cm³-cell⁻¹) in July 1989 and April 1990. In 1989, the medium was amended with CaC0₃ at 10% w:v. In 1990, no CaC0₃ amendment was made. Watermelon seedling...

Resource Type:

Masters Thesis

Full Text:

) and non-calcareous media, suggesting a synergistic effect on plant growth above that of buffering
Effects of nitrogen source, rate and a nitrification inhibitor on soil nitrogen status and mineral composition of strawberry

Creator:

Marion, Carol I.

Abstract:

Three rates of urea, urea-DCD, and NH₄N0₃ were soil applied in April and August 1986 to strawberry selection OR-US 4930 and cultivar 'Sumas' to determine effects of the nitrification inhibitor dicyandiamide (DCD) and nitrogen source and rate on soil NH₄ and N0₃ levels, fruit yield and quality, and mineral composition...

Resource Type:

Masters Thesis

Full Text:

OF FIGURES Figure Page 1 Average effect of nitrogen rate on recovery 33 of NH4-N from soil in