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■wise is not usually a limiting fac/, tor in orchards but lime may be needed tb promote the growth of leguminous cover crops. - Relation of Soil Typo To Orchard FertilizationSoils
which contain a reasonable amount of fine silt and clay particles require less fertiliser than sandy, or gravelly soils. The fine soil particles serve as reservoirs 5 for nutrients which"’ plants need for growth. Even though silt and clay soils are the most fertile, a considerable quantity of coarse particles such as sand must be present to promote> drainage. On the other hand, soils which are predominately sandy or gravelly are nfertile and plants on auch soils may develop deficiencies of potassium, magnesium, or boron. Orchards on such sites must receive extra amounts of nitrogen. As waa suggested previously, the grower should also apply a light application of potassium, magnesium, and boron to a few trees to see if they respond to such treatment.
Growth Status of tho Tree •
The vigor of the trees In the orchard must be considered in planning the fertilisation program. Young bearing age apple trees should make a terminal growth of 12 to 15 inches each year. As the trees become older good production may be maintained with 8 to 10 inches of growth.
Peach trees during their early bearing years should make a ter„ “inal growth of about 16 to 18 inches each year. During their older years this growth may be reduced to 0 or 12 inches.
The orchard manager should watch his trees and vary the fertiliser program to maintain the
(Sw ORCHARD page 3)
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