A Manual for Citrus Growers1947 - 141 páginas |
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Página 58
... foliage . Any attempt to force a tree into an unnatural type of growth can be expected to reduce yields . Diseased or injured trees may benefit from pruning but this de- pends on the nature of the disease or injury . Trees which have ...
... foliage . Any attempt to force a tree into an unnatural type of growth can be expected to reduce yields . Diseased or injured trees may benefit from pruning but this de- pends on the nature of the disease or injury . Trees which have ...
Página 87
... foliage characteristic of acute nitrogen deficiency ; B , orange tree showing sparse , yellowish , lusterless foliage , and general brushy appearance , characteristic of severe nitrogen deficiency ; C , normal orange ; D , orange from ...
... foliage characteristic of acute nitrogen deficiency ; B , orange tree showing sparse , yellowish , lusterless foliage , and general brushy appearance , characteristic of severe nitrogen deficiency ; C , normal orange ; D , orange from ...
Página 90
... foliage owing to premature leaf fall and more or less die - back . Effects on Yield and Quality . According to Parker and South- wick , not much yield increase has resulted from spray applications where the manganese deficit is moderate ...
... foliage owing to premature leaf fall and more or less die - back . Effects on Yield and Quality . According to Parker and South- wick , not much yield increase has resulted from spray applications where the manganese deficit is moderate ...
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