Plant Growth Regulator Gibberellic Acid Ga3 95%TC, 90%TC

Function

Plant Growth Regulator

Specification

95%Tech, 20%SP, 10% Tablet

Chemical Name

(1a,2b,4aa,4bb,10b)-2,4a,7-trihydroxy-1-methyl-8-methylenegibb-3-ene-1,10-dicarboxylic acid 1,4a-lactone

CAS No.

77-06-5

Empirical Formula

C19H22O6

Toxicology

Oral Acute oral LD50 for rats and mice >15 000 mg/kg.

Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg. Non-irritating to skin and eyes.

Inhalation No ill-effect on rats subjected to 400 mg/l for 2 h/d for 21 d.

NOEL (90 d) for rats and dogs >1000 mg/kg diet (6 d/w).

Toxicity class WHO (a.i.) U

Applications

Mode of action Acts as a plant growth regulator on account of its physiological and morphological effects in extremely low concentrations. Translocated. Generally affects only the plant parts above the soil surface. Uses Has a variety of applications, e.g. to improve fruit setting of clementines and pears (especially William pears); to loosen and elongate clusters and increase berry size in grapes; to control fruit maturity by delaying development of the yellow colour in lemons; to reduce rind stain and retard rind ageing in navel oranges; to counteract the effects of cherry yellows virus diseases in sour cherries; to produce uniform seedling growth in rice; to promote elongation of winter celery crop; to induce uniform bolting and increase seed production in lettuce for seed; to break dormancy and stimulate sprouting in seed potatoes; to extend the picking season by hastening maturity in artichokes; to increase the yield in forced rhubarb; to increase the malting quality of barley; to produce brighter-coloured, firmer fruit, and to increase the size of sweet cherries; to increase yields and aid harvesting of hops; to reduce internal browning and increase yields of Italian prunes; to increase fruit set and yields of tangelos and tangerines; to improve fruit setting in blueberries; to advance flowering and increase the yield of strawberries; and also a variety of applications on ornamentals. Application rates up to 80 g/a per application, depending on desired effect.

Package

25KG/Drum, 5KG/Aluminium Bag, 10KG/Carton, etc