Liming acid citrus soils - a preliminary report on soils and tissue data and liming materials
1981
Vernon, H. (Ministry of Agriculture and Lands (Belize))
Chemical analysis was carried out on samples of citrus grove soils at two depths (0-6 ins. and 6-12 ins.); and leaf tissue of Valencia oranges. Soil pH values were found to be very low (3.8-5.1) at both depths, as were base saturation values which decreased down the profile. This was reflected in low exchangeable Ca and Mg. From comparison of tissue analyses with USDA 'satisfactory' ranges for mineral contents of citrus leaves, N and K levels were adequate, P deficient to adequate, Ca deficient in half the groves, while Mg uptake was affected by the presence of other elements. Symptoms of zinc and magnesium deficiencies were observed on all, and 50 percent of trees respectively. As nutrient uptake is limited by low pH, fertilization with compound fertilizers would be useless without incorporation of lime, preferably of a high magnesium content
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