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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

Growth in herbaceous perennials

Creator:: Nakajima, Rie
Abstract:: Several studies of herbaceous perennials have addressed the effects of environmental factors during and after production, inherent cold hardiness, and post-harvest handling procedures to enhance flowering and growth during establishment. The regrowth of both woody and herbaceous forage plants following establishment is reported to be directly related to reserve-nitrogen content....
Resource Type:: Masters Thesis
Full Text:: that reserve nitrogen may have more effect than carbohydrates on the regrowth of perennial plants

The effect of preplant nitrogen fertilization and soil temperature on biological nitrogen fixation and yield of alfalfa (Medicago sativa L.)

Creator:: Shuler, Philip E.
Abstract:: The usefulness of preplant nitrogen (N) in establishing alfalfa in colder production areas has not been well characterized. This study was conducted to determine the effect of preplant N and soil temperature on yield, percent N derived from biological nitrogen fixation (PBNF), and shoot N concentration in alfalfa (Medicago sativa...
Resource Type:: Dissertation
Full Text:: , 1991. Title: The Effect of Preplant Nitrogen Fertilization and Soil Temperature on Biological

Nitrogen use and management in red raspberry

Creator:: Rempel, Hannah Gascho
Abstract:: The effects of ¹⁵N-labeled fertilizer applied to mature summer-bearing red raspberry (Rubus idaeus L.) plants were measured over two years. Four nitrogen (N) treatments were applied singularly at 0, 40, or 80 kg·ha⁻¹ of N in early spring (budbreak), or split with 40 kg·ha⁻¹ of N (unlabeled) applied at budbreak...
Resource Type:: Masters Thesis
Full Text:: raspbeny over two years. 18 Effect of nitrogen application on yield per plant and nitrogen partitioning to

Spatial analysis of potato canopy nitrogen content using remotely sensed reflectance measurements

Creator:: Stangel, David E.
Abstract:: This study sought to explore the relationship between spatial scale and canopy chemistry through the use of remotely sensed videography data and total nitrogen content of potato petioles. A range of broad band spectral indices were employed along with standard red and green wavelengths to define an optimum scale or...
Resource Type:: Masters Thesis
Full Text:: understanding of the plant-soil-atmosphere relations. This study has focused on nitrogen induced changes in

Nitrogen and environmental factors influence bark storage protein gene expression in poplar

Creator:: Banados, Maria Pilar
Abstract:: In poplar (Populus spp.) a 32-kilodalton bark storage protein (BSP) accumulates during the fall and winter, and is thought to be a major storage form of overwintering nitrogen. BSP is induced by short-day (SD) photoperiod, and under natural conditions BSP accumulation coincides with the induction of dormancy. Because BSP accumulates...
Resource Type:: Masters Thesis
Full Text:: compound, depending on the growing conditions and the nitrogen status of the plant. Nitrogen and

Photosynthesis in relation to nitrogen in apple (Malus domestica Borkh.) leaves

Creator:: Cheng, Lailiang
Resource Type:: Dissertation
Full Text:: of manipulation. However, when the N supply is reduced, the initial impact is on plant growth

Time-based nitrogen availability and risk of Taeniatherum caput-medusae (L.) Nevski invasion in central Oregon

Creator:: Stubbs, Michelle M.
Abstract:: During the last century, fire suppression, grazing, and climate change have caused sagebrush grasslands to be altered in both function and form; juniper and sagebrush dominate the landscape at the expense of herbaceous plants. Management efforts to reduce juniper and sagebrush overstory in order to enhance herbaceous components of the...
Resource Type:: Masters Thesis
Full Text:: degree of Master of Science in Forest Science presented on June 30, 2000. Title: Time-based Nitrogen

Relationships of tree growth to nitrogen and water availability in a sheep-tree-pasture system in Douglas County, Oregon : field case study and shadehouse simulation

Creator:: DeMeo, Thomas
Abstract:: This thesis consists of three parts: 1) a field case study involving tree growth, moisture stress, and foliar nitrogen response to sheep-grazed pasture treatments; 2) a shadehouse (potted-plant) study of simulated grazing effects on tree growth and moisture use; and 3) a summary, synthesizing results of the field and shadehouse...
Resource Type:: Masters Thesis

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:: on stem length and plant height 4 weeks after seeding, 1989 32 3.5 Nitrogen-form ratio effect

ScholarsArchive@OSU

Nitrogen dynamics in field grown comice pears

Growth in herbaceous perennials

The effect of preplant nitrogen fertilization and soil temperature on biological nitrogen fixation and yield of alfalfa (Medicago sativa L.)

Nitrogen use and management in red raspberry

Spatial analysis of potato canopy nitrogen content using remotely sensed reflectance measurements

Nitrogen and environmental factors influence bark storage protein gene expression in poplar

Photosynthesis in relation to nitrogen in apple (Malus domestica Borkh.) leaves

Time-based nitrogen availability and risk of Taeniatherum caput-medusae (L.) Nevski invasion in central Oregon

Relationships of tree growth to nitrogen and water availability in a sheep-tree-pasture system in Douglas County, Oregon : field case study and shadehouse simulation

Influence of nitrogen form ratio and calcium on greenhouse and field performance of watermelon

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