Water Sprinkling of Log Decks to Reduce Emergence of Mountain Pine Beetle in Lodgepole Pine

Abstract

Water sprinkling of lodgepole pine logs infested by mountain pine beetle with soaker-hoses on the surface of log decks, reduced survival of pupae and young adults to 5% compared with 93% in control decks. The technique provides a useful alternative to other methods of reducing hazard from the insect to pine stands surrounding log storage areas. ResumeUn arrosage a I'eau, avec des tuyaux perfores, a la surface de depots de billes de pin tordu latifolie infestees par le dendroctone du pin ponderosa a reduit la survie des pupes et des jeunes adultes a 5%, en comparaison de 93% dans les depots non arroses. Corttre cet insecte, cette technique remplace utiiement d'autres methodes de protection des peuplements de pin voisins des entrepots de billes.

Tomicus piniperda(Coleoptera: Scolytidae) Emergence in Relation to Burial Depth of Brood Logs

“…Reduced brood survival has been reported for various bark beetles when phloem (inner bark) moisture levels increase much above what is commonly found in live trees (Beanlands 1967, Webb andFranklin 1978). In fact, the relationship between elevated water content and reduced bark beetle attack and survival is the basis for the practice of sprinkling water on the cut logs to reduce bark beetle attack (McMullen andBetts 1982, Syme andSaucier 1995).…”

Submergence of black ash logs to control emerald ash borer and preserve wood forAmericanIndian basketmaking

“…The film of water over the surface of the log forms a physical barrier to beetle attack and reduces the emission of ethanol that attracts bark and ambrosia beetles (Wylie et al ., ). In addition, brood survival is reduced for various bark beetles when the phloem moisture level is elevated (Beanlands, ; Webb & Franklin, ) and serves as the basis for the recommendation of sprinkling water on cut logs to reduce bark beetle infestation (McMullen & Betts, ; Syme & Saucier, ).…”