บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Commercial chemical thinning of stone fruit in California by gibberellins to reduce flowering.

Southwick, S. M.; Fritts, R., Jr.;

Acta Horticulturae Year: 1995 Issue: No. 394 Pages: 135-147 Ref: 19 ref.

1995

บทคัดย่อ

Commercial chemical thinning of stone fruit in California by gibberellins to reduce flowering.

 

Pre- and postharvest sprays of the gibberellin-containing compound Release LC were applied to 5 apricot, 2 nectarine, 5 peach and 2 plum (Prunus salicina) cultivars in various orchards throughout California in 1993. Release LC treatment often increased fruit firmness in all species without a consistent reduction in fruit TSS content. TSS content of plums was increased by preharvest treatment. As a result of treatments, flowering in the 1994 season was reduced in virtually all apricot, peach and plum trials, and in many nectarine trials. Decreased flower number led to reduced thinning times in the plum cultivars Black Amber and Friar and fewer fruits thinned per tree in those same plum cultivars and apricot cv. Patterson. At harvest, yield (weight)/tree in apricot cv. Patterson was not reduced by Release LC treatment when compared with hand thinning, but individual fruit weight was increased by Release LC sprays of 70.2 and 93.5 g/ha applied approx. 18 days before harvest.