Author: Ellan C. Moran
Publisher:
ISBN:
Category : Nitrogen
Languages : en
Pages : 226
Book Description
Dinitrogen Fixation Associated with Ohio Soft Red Winter Wheat (Triticum Aestivum SSP. L. Em. Thell) Varieties
Author: Ellan C. Moran
Publisher:
ISBN:
Category : Nitrogen
Languages : en
Pages : 226
Book Description
Publisher:
ISBN:
Category : Nitrogen
Languages : en
Pages : 226
Book Description
Agronomy News
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 712
Book Description
Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 712
Book Description
Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.
Carbohydrate and Nitrogen Reserves in the Hard Red Winter Wheat (Triticum Aestivum L.) Variety 'Newton'
Author: Gerard Walter Wall
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 64
Book Description
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 64
Book Description
The Effects of Top-dressed Nitrogen on Soft Red Winter Wheat Varieties
Author: Howard N. Lafever
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 14
Book Description
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 14
Book Description
Comprehensive Dissertation Index
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1244
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1244
Book Description
Comprehensive Dissertation Index, 1861-1972: Agriculture
Author: Xerox University Microfilms
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1226
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1226
Book Description
Response of Winter Wheat (Triticum Aestivum L. Em. Thell) to Nitrogen and Chloride Fertilization in the Presence of Take-all Root Rot (Gaeumannomyces Graminis Var. Tritici Walker)
Author: Mohamed El Hadi Maatougui
Publisher:
ISBN:
Category : Take-all disease
Languages : en
Pages : 202
Book Description
Response from nitrogen and chloride fertilization was measured in field experiments on winter wheat (Triticum aestivum L. Em. Thell. var. 'Stephens' and 'Yamhill') grown in western Oregon in an environment with a range of susceptibility to take-all root rot (Gaumannomyces graminis var. tritici Walker). Cropping sequences and expected disease severity considered in the study were: first year wheat after clover (low risk of severe take-all root rot: Nixon I experiment), second year wheat with high disease infection in the previous crop (high risk of severe take-all root rot: Keyt II experiment), second year wheat with low disease infection in the previous crop (moderate risk of severe take-all root rot: Nixon II and Coon experiment), third year wheat (high risk of severe take-all root rot: Jones experiment), fifth year wheat (high risk of severe take-all root rot: Keyt II experiment), and eighteenth year wheat (take-all decline established: the pathogen is present in the soil but does not cause damage, Evers experiment). Nitrogen treatments were applied at 0, 67, 134, and 202 kg/ha in all experiments where wheat followed wheat and at 0, 45, 90, and 134 kg/ha in the experiment where wheat followed clover. Chloride treatments were applied at 0, 45, and 90 kg/ha in all experiments and a rate of 134 kg C1/ha was also used on the Jones experiment. Nitrogen was predominantly supplied from urea while ammonium chloride supplied chloride and ammonium sulfate supplied the crop requirement for sulfur (about 20 kg/ha). Fertilizers were top-dressed in split application with chloride and sulfur containing fertilizers applied first (February) and urea applied later (March) in all experiments but those conducted in the Nixon farm where a single fertilizer was applied in March. Crop response was measured through the effects of N and c1 treatments on dry matter production, plant nitrogen content, plant nitrogen uptake and plant percent nitrogen recovery, as well as grain yield, yield components, grain nitrogen content, grain protein content, grain nitrogen uptake, and grain percent nitrogen recovery. The results of the study strongly indicated that take-all root rot was only a problem in the Jones, Keyt I, and Keyt II experiments and was most severe in third year wheat (Jones experiment). This also was the only experiment with significant (p = 0.05) response from rates of 202 kg N/ha. Nitrogen fertilization was the main factor that greatly influenced the levels of the variables studied while chloride fertilization generally did not have a significant (p = 0.05) influence. 134 kg N/ha was generally the rate accounting for the best levels of each variable studied in all experiments except in the Jones experiment as precised earlier. Crop response was also affected by a relatively long 'dry' period (April 20th to June 20th), particularly in the experiment where take-all root rot was a problem. Levels of the variables studied accounted for by the optimum rates of N were consistently higher in the experiments where take-all root rot was not a problem than where it was a problem by the following amounts: dry matter yields-17%, plant nitrogen contents-18%, plant nitrogen uptake levels-30%, plant nitrogen recoveries-28%, grain yields-22%, grain nitrogen contents-only 4%, grain protein contents-only 2%, grain nitrogen uptake levels-26%, grain nitrogen recoveries-18%, and spikes/m2-24%.
Publisher:
ISBN:
Category : Take-all disease
Languages : en
Pages : 202
Book Description
Response from nitrogen and chloride fertilization was measured in field experiments on winter wheat (Triticum aestivum L. Em. Thell. var. 'Stephens' and 'Yamhill') grown in western Oregon in an environment with a range of susceptibility to take-all root rot (Gaumannomyces graminis var. tritici Walker). Cropping sequences and expected disease severity considered in the study were: first year wheat after clover (low risk of severe take-all root rot: Nixon I experiment), second year wheat with high disease infection in the previous crop (high risk of severe take-all root rot: Keyt II experiment), second year wheat with low disease infection in the previous crop (moderate risk of severe take-all root rot: Nixon II and Coon experiment), third year wheat (high risk of severe take-all root rot: Jones experiment), fifth year wheat (high risk of severe take-all root rot: Keyt II experiment), and eighteenth year wheat (take-all decline established: the pathogen is present in the soil but does not cause damage, Evers experiment). Nitrogen treatments were applied at 0, 67, 134, and 202 kg/ha in all experiments where wheat followed wheat and at 0, 45, 90, and 134 kg/ha in the experiment where wheat followed clover. Chloride treatments were applied at 0, 45, and 90 kg/ha in all experiments and a rate of 134 kg C1/ha was also used on the Jones experiment. Nitrogen was predominantly supplied from urea while ammonium chloride supplied chloride and ammonium sulfate supplied the crop requirement for sulfur (about 20 kg/ha). Fertilizers were top-dressed in split application with chloride and sulfur containing fertilizers applied first (February) and urea applied later (March) in all experiments but those conducted in the Nixon farm where a single fertilizer was applied in March. Crop response was measured through the effects of N and c1 treatments on dry matter production, plant nitrogen content, plant nitrogen uptake and plant percent nitrogen recovery, as well as grain yield, yield components, grain nitrogen content, grain protein content, grain nitrogen uptake, and grain percent nitrogen recovery. The results of the study strongly indicated that take-all root rot was only a problem in the Jones, Keyt I, and Keyt II experiments and was most severe in third year wheat (Jones experiment). This also was the only experiment with significant (p = 0.05) response from rates of 202 kg N/ha. Nitrogen fertilization was the main factor that greatly influenced the levels of the variables studied while chloride fertilization generally did not have a significant (p = 0.05) influence. 134 kg N/ha was generally the rate accounting for the best levels of each variable studied in all experiments except in the Jones experiment as precised earlier. Crop response was also affected by a relatively long 'dry' period (April 20th to June 20th), particularly in the experiment where take-all root rot was a problem. Levels of the variables studied accounted for by the optimum rates of N were consistently higher in the experiments where take-all root rot was not a problem than where it was a problem by the following amounts: dry matter yields-17%, plant nitrogen contents-18%, plant nitrogen uptake levels-30%, plant nitrogen recoveries-28%, grain yields-22%, grain nitrogen contents-only 4%, grain protein contents-only 2%, grain nitrogen uptake levels-26%, grain nitrogen recoveries-18%, and spikes/m2-24%.
Nitrogen Topdressing of Soft Red Winter Wheat (Triticum Aestivum L.)
Author: Stephen Lee Kislack
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 112
Book Description
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 112
Book Description
Zwey wahrhafftige Newe Zeitung
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
Book Description
Response of Soft Red Winter Wheat Varieties to Rates of Top-dressed Nitrogen on Two Soil Types in 1966 and 1967
Author: Russell Kennedy Stivers
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 5
Book Description
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 5
Book Description