B-Lock Vine Seal
B-Lock Vine Seal is one of many ag specialty products produced by Nutrient TECH for grapevines that forms a physical, impenetrable barrier on pruning wounds to speed up the plant’s natural healing process and keep spores that cause eutypa dieback out.
B-Lock is a unique elastomeric “paint” with 5% Boric Acid that is liberally applied to fresh pruning wounds and stretches as the plant grows without breaking the seal. B-Lock is not a fungicide, instead it forms a physical barrier as the pruning wound heals that helps protect plants from spores and therefore infection from the fungus, which ultimately leads to a loss of the vine.
Prevent Eutypa Dieback
Eutypa dieback is a perennial canker disease of grapevine (Vitis vinifera) caused by Eutypa lata. The fungus produces ascospores, which infect grapevines through pruning wounds during the dormant season. Management of the disease has been achieved with fungicide applications during the dormant period. However, no effective fungicide was available for this purpose after Benlate was withdrawn from the market.
–Rolshausen, P. E., and Gubler, W. D. 2005. Plant Dis. 89:734-738.