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Read e-book online Management of Nitrogen and Water in Potato Production PDF

By A. J. Haverkort, D. K. L. Mackerron

ISBN-10: 9074134777

ISBN-13: 9789074134774

Potato is especially delicate to water and nitrogen utilized in the course of progress, affecting its profitability and effect at the surroundings. fresh medical and technical breakthroughs permit us to make most sensible use of water and nitrogen. This ebook exhibits how clinical wisdom works in perform. This systematic and accomplished e-book on crop, soil and water applied sciences will help manufacturers to accomplish optimum construction with greatest profit to themselves and to the surroundings. Questions, corresponding to the next are spoke back: which sampling thoughts of crops and soil can be found and which may still I use?; what does the knowledge amassed suggest and the way do they help in water and nitrogen application?; which selection help structures exist for rain-fed, irrigated, precision or natural farming? The booklet updates and translates wisdom in an easy manner. it truly is meant for farmer, farmers' experts, researchers and choice makers and likewise for college kids in soil technological know-how and agronomy

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Additional resources for Management of Nitrogen and Water in Potato Production

Example text

During the growing season, measurements of nitrogen uptake and metabolism provide tactical information that may allow the grower to avoid loss of yield or quality of tubers and leaching of nitrogen to ground water. After harvest, determination of nitrogen in the harvested crop will allow assessment of the quality of the product and can assist planning future fertilizer application by enabling calculation of a nitrogen balance. Consumers are interested in the quality and environmental impact of potato production as well as the price of potatoes.

So manures and slurries should be placed directly into the soil, or incorporated very rapidly. There are, also, soil bacteria that can and do reduce nitrate to nitrous oxide (N2O) and molecular nitrogen (N2), using the oxygen in nitrate instead of oxygen in the soil atmosphere. This is called denitrification, and results in the loss of nitrogen to the atmosphere. Nitrous oxide is an atmospheric pollutant contributing to global change. g. fresh crop residues. The nitrogen budget of the crop Since Von Liebig discovered in the last century that plants need mineral ions to grow, man has made fertilizers.

Therefore, a grower should record the rainfall in each individual field that is to be irrigated. The second point is that the ‘threshold’ soil moisture deficit to trigger irrigation will differ from field-to-field with the water holding capacity of the different soils, and it will change continuously through the growing season as the crop develops. If the soil and tillage allow roots to continue growing downward then there is a larger reservoir of soil water made available. In addition, the crop becomes less sensitive to water stress as the growing season progresses and so larger soil moisture deficits can be tolerated.

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Management of Nitrogen and Water in Potato Production by A. J. Haverkort, D. K. L. Mackerron

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