Compatibility of a petroleum spray oil and foliar zinc fertilisers

Hodgkinson, M. C.; Joyce, D. C.; Mackey, AP; Sagatys, D.S.; Schmiede, TS; Smith, GD

doi:10.1071/ea9960331

Cited by 1 publication

(1 citation statement)

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“…Continued research into plant injury hazards of petroleum spray oil use (Riehl, 1969;Furness, 1981a, b;Furness and Maelzer, 1981;Beattie et al, 1989;Knapp, 1990;Lee and Knapp, 1992, spray application methods (Beattie, 1990;Beattie and Kaldor, 1990;Beattie et al, 1991) and compatibilities of oils with other chemicals (Hodgkinson et al, 1996;Rae et al, 1996a), has significantly reduced the risk of phytotoxicity from modern narrow-range oils. This has been achieved by defining safe application procedures, maximum concentrations of oil per spray and cumulative total oil concentrations per season.…”

Section: Introductionmentioning

confidence: 98%

Efficacy and phytotoxicity of multiple petroleum oil sprays on sweet orange (Citrus sinensis (L.)) and pummelo (C. grandis (L.)) in Southern China

Rae¹,

Watson²,

Huang³

et al. 2000

International Journal of Pest Management

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Abs tract. The efficacy of pest control of three different oil formulations in multiple low-concentration spray programmes on sweet orange and pummelo were compared with unsprayed and normal farmer-treatments over three years. Phytotoxicity of sprays was assessed in terms of fruit and leaf drop, fruit yield and external fruit quality. Trees sprayed with any type of oil had lower pest numbers than unsprayed trees. On sweet orange, the heaviest oil was better than the normal farm practice at controlling chaff scale on fruit and red mite and whitefly on leaves. On pummelo it provided the best control of red mite on leaves. All three oils were as effective as the normal farm practice in control of rust mite on sweet orange fruit and leaves and red mite, rust mite and red scale on pummelo fruit. On sweet orange trees there was no evidence of phytotoxicity, and the external quality of fruit generally improved over time. On pummelo trees, oil sprays were unable to improve the external fruit quality. The number of pummelo per tree was reduced in three of the oil spray schedules in 1995 and one in 1996, but the total weight of fruit harvested per tree was unaffected.

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Section: Introductionmentioning

confidence: 98%