Nitrogen fertilization in tall fescue: Productivity, agronomic efficiency and relative profitability
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چکیده
منابع مشابه
Efficiency of nitrogen fertilization in spring wheat
An assessment of the nitrogen fertilization efficiency should not only include quantitativeand qualitative yield changes, but also an analysis of formation some indicators such as: Nharvest index (NHI), N use efficiency (NUE), N utilization efficiency (NUtE), N agronomicefficiency (NAE), N physiological efficiency (NPE) and N apparent recovery fraction (NRF).The objective of the study was the e...
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Introduction Ergot alkaloid toxins produced by Neotyphodium coenophialum in association with tall fescue (Festuca arundinacea) have been shown to affect numerous physiological systems of livestock resulting in decreased profitability of those enterprises. One management technique that has been promoted to reduce the production losses in cattle is crossbreeding (Brown et al., 1997). In addition ...
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An efficient genetic transformation system for tall fescue ( Festuca arundinacea Schreb.), using Agrobacterium tumefaciens-mediated TDNA delivery, is described. Seed-derived embryogenic calli were infected with Agrobacterium tumefaciens strain EHA105 harboring plasmids pTOK47 and pCAMBIA1301. Infected calli were selected at 250 mg L 1 hyg B and the regenerated plantlets at 50 mg L . Using the p...
متن کاملTall Fescue Toxicosis
widely used forage crop. It is insect and nematode resistant, tolerates poor soil and climatic conditions well and has a long growing season. Unfortunately, tall fescue also has a downside. Most tall fescue in the state is infected with a fungal endophyte, Neotyphodium coenophialum (formerly called Acremonium coenophialum) that is toxic to animals. Tall fescue was brought to this country from E...
متن کاملCarbohydrate Metabolism in Leaf Meristems of Tall Fescue : II. Relationship to Leaf Elongation Rates Modified by Nitrogen Fertilization.
Our objective was to examine alterations in carbohydrate status of leaf meristems that are associated with nitrogen-induced changes in leaf elongation rates of tall fescue (Festuca arundinacea Schreb.). Dark respiration rates, concentrations of nonstructural carbohydrates, and soluble proteins were measured in leaf intercalary meristems and adjacent segments of elongating leaves. The two genoty...
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ژورنال
عنوان ژورنال: Grassland Science
سال: 2019
ISSN: 1744-6961,1744-697X
DOI: 10.1111/grs.12261