MINERAL OIL FOR CONTROL OF ARMOURED SCALE INSECTS ON 'HORT16A' KIWIFRUIT
The use of mineral oil products as a control measure against armoured scale insects on organic 'Hort16A' kiwifruit was investigated in the Bay of Plenty, New Zealand. Applying 1% oil between 28 and 63 days after fruit set caused speckling damage to the fruit skin, whilst applications of 1% oil subsequent to 94 days after fruit set caused premature fruit drop. Increasing the concentration of oil applied from 1% to 2% increased the amount and severity of fruit damage. Oil was used safely during the pre-blossom period, between 1 and 21 days after fruit set, and between 70 and 94 days after fruit set. A spray programme based on applications of oil during these safe periods provided adequate control of armoured scale insects.
McKenna, C.E., Dobson, S. and Maher, B. (2007). MINERAL OIL FOR CONTROL OF ARMOURED SCALE INSECTS ON 'HORT16A' KIWIFRUIT. Acta Hortic. 753, 703-710
kiwifruit, Actinidia, Hemiberlesia, 'Hort16A', mineral oil, phytotoxicity, armoured scale insects, control