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1	Durum Quality is Related to Water and Nitrogen Management Ottman, M. J., Doerge, T. A. 12 1900 (has links) No description available. Agriculture -- Arizona Grain -- Arizona Forage plants -- Arizona Small grains -- Arizona Small grains -- Nitrogen management
2	Nitrogen Fertilizer Movement in Wheat Production, Higley Ottman, M. J., Husman, S. H. 12 1900 (has links) No description available. Agriculture -- Arizona Grain -- Arizona Forage plants -- Arizona Small grains -- Arizona Small grains -- Nitrogen management
3	Nitrogen Fertilizer Movement in Wheat Production, Yuma Ottman, M. J., Husman, S. H. 12 1900 (has links) No description available. Agriculture -- Arizona Grain -- Arizona Forage plants -- Arizona Small grains -- Arizona Small grains -- Nitrogen management
4	Nitrogen Fertilizer Movement in Wheat Production, Roll Ottman, M. J., Tickes, B. R. 12 1900 (has links) Labeled nitrogen fertilizer (N-15) was applied to wheat to determine fertilizer nitrogen movement in the soil at harvest. Most of the labeled fertilizer recovered in the soil was found in the surface few feet. The amount of nitrogen fertilizer detected below S feet was minimal. Agriculture -- Arizona Grain -- Arizona Forage plants -- Arizona Small grains -- Arizona Small grains -- Nitrogen management
5	Nitrogen Fertilizer Movement in the Soil as Influenced by Nitrogen Rate and Timing in Wheat Production, 1991 Ottman, M. J., Vigorito, N. 12 1900 (has links) No description available. Agriculture -- Arizona Grain -- Arizona Forage plants -- Arizona Small grains -- Arizona Small grains -- Nitrogen management
6	Nitrogen Fertilizer Movement in the Soil as Influenced by Nitrogen Rate and Timing in Wheat Production, 1992 Ottman, M. J., Vigorito, N. 12 1900 (has links) Durum wheat was grown with deficient, adequate, and excessive rates of ¹⁵N-labeled nitrogen fertilizer in order to document fertilizer nitrogen movement in the soil with differing nitrogen management. Crop water use increased with nitrogen rate due to increased vegetative growth. The amount of excess water applied increased with a decrease in nitrogen rate. Soil bromide concentrations at harvest suggest that the maximum potential depth of leaching was 3 to 6 feet. Most of the fertilizer applied in this study was recovered in the top 2 to 3 feet of soil. Fertilizer nitrogen rate and timing resulted in some differences in recovery of labeled fertilizer in the soil and plant, but did not contribute significantly to the depth of fertilizer nitrogen leaching. Agriculture -- Arizona Grain -- Arizona Forage plants -- Arizona Small grains -- Arizona Small grains -- Nitrogen management

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