A Manual for Citrus Growers1947 - 141 páginas |
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Página 23
... cover- crops , etc. The basic practice followed in California citrus groves , which are in production , is to apply 5 to 10 tons of organic material per acre each year and supplement this with enough actual nitrogen to provide 22 to 3 ...
... cover- crops , etc. The basic practice followed in California citrus groves , which are in production , is to apply 5 to 10 tons of organic material per acre each year and supplement this with enough actual nitrogen to provide 22 to 3 ...
Página 100
... CROPPING IN considering cover - crops , one should keep in mind the several points of advantage : the amount of organic material they add to the soil ; their nitrogen content ; and their prevention of soil erosion . Growing winter cover - ...
... CROPPING IN considering cover - crops , one should keep in mind the several points of advantage : the amount of organic material they add to the soil ; their nitrogen content ; and their prevention of soil erosion . Growing winter cover - ...
Página 102
... cover - crops . When they are disked under , no commercial nitrogen needs be added to support the trees while the cover crop decomposes . Among the legumes in the foregoing list are purple vetch , bitter clover , burr clover , small ...
... cover - crops . When they are disked under , no commercial nitrogen needs be added to support the trees while the cover crop decomposes . Among the legumes in the foregoing list are purple vetch , bitter clover , burr clover , small ...
Índice
Chapter Page 1 SOILS CLIMATE WATER | 2 |
CITRUS TREES | 4 |
IRRIGATION PRACTICES | 11 |
Direitos de autor | |
18 outras secções não apresentadas
Palavras e frases frequentes
100 gallons acid alkaline ammonia amount applied areas black scale boxes per acre brown rot carbon cause chemical chlorosis Citrus Diseases Citrus Experiment Station citrus fruits citrus growers Citrus Leaves citrus trees copper COST PER ACRE County cover-crops crop cultivation Cultural Cost damage dust effective fertilizer field boxes foliage fumigation fungus furrows grapefruit grove growth heavy inches injury insects irrigation irrigation water juice leaf lemons lime manganese deficiency manures material mealybug method mixture moisture Mutual Orange Distributors navel navel oranges nitrate nitrogen oil spray orchard organic matter packed boxes parasites percent pest control phosphate phosphorus plow-sole potash pounds production profitable pruning red scale red spider rind root zone rootstock Rough lemon scaly bark Septoria soil sucker sulphate sulphur symptoms temperature thrips treatment trifoliate orange trunk usually Valencia orange virus weeds windbreak wood young trees zinc deficiency zinc oxide zinc sulfate