The chemical basis of resistance of pineapple plant to Dolichotetranychus floridanus Banks (Prostigmata: Tenuipalpidae)
2000 - Volume: 41 Issue: 3 pages: 317-320
Abstract
Various chemical principle of leaves (total nitrogen, phosphorus, potassium, calcium, magnesium, iron, copper, zinc, silicon, manganese, crude protein, phenol, vitamin C, acidity, lipid, chlorophyll, total sugar reducing and non-reducing sugar and moisture) varied significantly among five varieties of pineapple. Only two (zinc and silicon) showed a positive relationship with population density of Dolichotetranychus floridanus in the varieties Queen (6.80 ppm.), Giant Kew (5.70 ppm.) and Kew (4.50 ppm.).
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