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Titlebook: Improved Crop Quality by Nutrient Management; D. Anac,P. Martin-PrÉvel Book 1999 Springer Science+Business Media Dordrecht 1999 environmen

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楼主: Daidzein
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Effect of combined N and K nutrition on yield and quality of spinachd with respect to treatments. No steady changes were measured in the case of leaf P, Cl, Fe, Cu, Mn, Zn, contents. The effect of K nutrition on leaf Mg was negative, contradicting to leaf SO. content which increased by K levels.
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Influence of the supply and uptake of nitrogen on the quality of potato tubersere four replications in all experiments and all were irrigated. Harvests were taken at 10, 8, 5, and 5 intervals during the growing seasons of the four years, respectively, when full sets of growth analysis measurements were made, including [DM], [N], and the partitioning of N within the plants bet
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Factual background for improving quality through nutritional management (short version)ects of essential and non-essential elements with specific attention to N, K and organic matter. . tables and references are presented only in an extended version containing more comments and available on order.
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Book 1999ding more of what thecrop has already absorbed to capacity is unproductive, expensive,wasteful and damaging to the environment. Therefore, balanced cropnutrition increases crop quality, safeguards natural resources andbrings benefit to the farmer. Otherwise rapid population growth andsevere urbanization will exhaust our natural resources.
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Organic manures and mineral fertilizersic manures are bulky, expensive to transport and contain small amounts of nutrients per unit volume. In addition, the amount and rate of release of nutrients from organic manures is often difficult to predict with accuracy, especially for nitrogen. Some of the benefits and concerns about the use of organic manures are discussed in this paper.
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