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Bull. Spec. CORESTA Congress, Guangzhou 1988, p. 99, A-18

Sucker control on Burley tobacco

PIRO P.; VARDABASSO A.
Istituto Sperimentale per il Tabacco, Scafati, Italy
Nine products were compared for sucker control in a field experiment on Burley tobacco to evaluate the effectiveness of sucker inhibition and the effect of treatments on yield characteristics. Treatments were one-time applications of : three commercial MH formulations, three fatty alcohol formulations, and three local systemics. Included in the experiment were two cultivars and four dates of harvest, extending from the first to the fourth week after topping. Results showed a fairly parallel pattern. All products inhibited sucker growth effectively for three weeks after topping. At the fourth week sucker fresh weight per plant for some contact formulations reached the level of the hand suckered control. MH formulations and local systemics showed on the average more persistence of action. Chemical treatments as a whole gave lower cured yields relative to hand suckering and failed to increase yield over the unsuckered control. Fair differences for cured tobacco yield were detected among the treatments inside each class of products.