|Statement||by R. H. Forbes.|
|Series||University of California publications in agricultural sciences -- v. 1, no. 12|
|The Physical Object|
|Number of Pages||494|
Genre/Form: book: Additional Physical Format: Print version: Forbes, Robert Humphrey, Certain effects under irrigation of copper compounds upon crops. Download this stock image. Certain effects under irrigation of copper compounds upon crops. Plants; Copper solutions, Physiological effect of. ] Forbes: Irrigation Effects of Copper Compounds Upon Crops to May for grain, may be explained by the following consider- ations: The wedge-shaped deposit of tailings indicated in the diagram (fig. 15) at first so obstructed . of copper sulphate, to determine whether any appreciable amounts of the copper occur in the soil beneath the sprayed vines. 1 FORBES, R. H. CERTAIN EFFECTS UNDER IRRIGATION OF COPPER COMPOUNDS UPON CROPS. Copper and Soil Fertility Walter Reuther Soils high in organic matter and weathered, sandy soils are likely to be deficient in copper. A great deficiency may cause serious stunting of growth and visible symptoms of disease in plants, but moderate deficiency may merely reduce yields. Copper once was regarded as a plant.
Tissue concentrations of young plants, or of young leaves, of crop plants or species used as test plants offer some promise as simple and approximate indicators of toxic levels of elemental pollution of the soil environment. Theupper critical level of an element is the lowest tissue concentration at which it has toxic effects. The results of an extensive survey to Cited by: University of Arizona Agricultural Experiment Station, "Certain Effects Under Irrigation of Copper Compounds Upon Crops" : Brochure, "How and Why of Agricultural Gypsum" : ha under rainfed agriculture, corresponding to 80% of the world’s total cultivated land, supply 60% of the world’s food; while the million ha under irrigation, the remaining 20% of land under cultivation, contribute the other 40% of the food supplies. On average, irrigated crop yields are times higher than those from rainfed by: 8. Uses of Copper Compounds: Agricultural Uses. Copper compounds have their most extensive employment in agriculture where the first recorded use was in , when it was discovered that seed grains soaked in a weak solution of copper sulphate inhibited seed-borne fungi.
In recent years, copper (Cu) pollution in agricultural soils, due to arbitrary use of pesticides, fungicides, industrial effluent and wastewater irrigation, present a major concern for sustainable agrifood production especially in developing countries. The world’s major food requirement is fulfilled through agricultural food crops. The Cu-induced losses in growth and Cited by: Copper is a reddish metal that occurs naturally in rock, soil, water, sediment, and, at low levels, air. Its average concentration in the earth's crust is about 50 parts copper per million parts soil (ppm) or, stated another way, 50 grams of copper per 1,, grams of soil ( ounces or pounds of copper per 2, pounds of soil). Technical Evaluation Report Copper Sulfate Livestock Febru Page 3 of 18 64 Specific Uses of the Substance: 65 Copper is ubiquitous in nature and a necessary nutritional element for both animals and plants. The daily 66 recommended allowance of copper for human adult nutrition is 2 mg. Ground water used for drinkingFile Size: KB. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.