Abstract:
The production of most economically important fruit crops involves the use of one or more plant bioregulating chemicals.
Some fruit crops could not be produced without some critical PBR tool; others would be significantly more expensive, available over a shorter season, or would be less attractive because of deficiencies in fruit quality.
Increasingly, PBRs are being recognized as important tools in pest and disease management.
However, despite their immense usefulness in horticulture, low hazard to human health, and great potential for providing "soft" options in pest and disease control, the future of PBR usage in fruit production is uncertain.
When any one commercial practice or product is judged to be unsustainable or unsafe it places all PBR products in jeopardy.
Thus, it is very important that future research on PBR chemicals focuses as much on specificity, mode of action and degradation as on efficacy in a commercial application.
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