Copper for Crop Production - University of Minnesota ExtensionTable 3. Tissue copper concentration varies between growth stages. It is important that crops be sampled at the growth stage listed if interpretation of plant analysis is to be accurate. Table 2. Soil test interpretation and recommendations for copper to be used for small grains production on organic (peat) soils in Minnesota.Copper for crop production : University of Minnesota ExtensionCopper (Cu) is an essential nutrient for plant growth, but because only a small amount is needed, it is classified as a micronutrient. . Organic matter: Copper deficiencies often occur in soils with peaty soils with greater concentrations of organic matter. Soil texture: Sandy-textured soils are more likely to be copper deficient.
COPPER AS AN ESSENTIAL FOR PLANT . - Plant PhysiologyMgSO4. Unfortunately samples ofthe other salts and the distilled water used were not available so thatthe total copper concentration of solutions to which copper was not intentionally added could not be determined. The amount added as impurities in the salts must, however, have been very small. 339 .plantphysiol.Copper toxicity - KeysSmall interveinal areas become pale and slightly sunken, while the tissue around both major and minor veins retains normal colouration. The effect may . Copper toxicity appears to affect primarily the plant roots, and therefore the concentration in the above-ground parts may be a poor indicator of plant status. Alva et al.
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