A Manual for Citrus Growers1947 - 141 páginas |
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Página 70
... leaf , twig and fruit symptoms of the disease and since great caution is neces- sary to prevent one mistaking for ... leaf symptoms in common - a flecking type of leaf marking . A less common type of leaf marking in some virus diseases ...
... leaf , twig and fruit symptoms of the disease and since great caution is neces- sary to prevent one mistaking for ... leaf symptoms in common - a flecking type of leaf marking . A less common type of leaf marking in some virus diseases ...
Página 90
... leaves . The development of a “ little leaf " condition is not a feature of manganese deficiency . Another difference between manganese and zinc deficiency is that in the latter the condition is usually more pronounced on the south side ...
... leaves . The development of a “ little leaf " condition is not a feature of manganese deficiency . Another difference between manganese and zinc deficiency is that in the latter the condition is usually more pronounced on the south side ...
Página 91
... leaves . In these there is usually even more chlorosis than in leaves less affected ; often the leaves are completely yellow or yellowish - green save for a greenish midrib and occasional green spots in the leaf . The deficiency is ...
... leaves . In these there is usually even more chlorosis than in leaves less affected ; often the leaves are completely yellow or yellowish - green save for a greenish midrib and occasional green spots in the leaf . The deficiency is ...
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