RT Journal Article SR Electronic T1 Scope and Limitations Of Carbendazim•H2PO4 Injections In Dutch Elm Disease Control JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 80 OP 86 DO 10.48044/jauf.1978.019 VO 4 IS 4 A1 Edward S. Kondo YR 1978 UL http://auf.isa-arbor.com/content/4/4/80.abstract AB Van Haverbeke, D.F. 1976. Forest genetics and tree improvement, p. 154-159. In Shelterbelts on the Great Plains. Proc. Symp. [Denver, Colo., April 1976] Great Plains Agric. Counc. Publ. 78, 218 p.Interest in forest tree breeding and improvement has been stimulated from two directions: the almost phenomenal success story of the breeding of hybrid corn, and the stress placed on tree breeding at the Third World Forestry Congress in Helsinki, Finland in 1950. Today, many federal and state agencies, universities, and private and industrial organizations are actively engaged in forest genetics and tree improvement programs. The improvement of trees involves the same genetic principles as does the improvement of agronomic crops, except there are some obvious differences unique to trees — long life and large size. Experimental taxonomy, provenance testing, selection, progeny testing, seed orchards, and seed certification are discussed.Peterson, G.W. 1976. Disease of Russian-olive caused by Botryodiplodia theobromae. Plant. Dis. Rep. 60(6): 490-494.Russian-olive, an exotic species native to southern Europe and western and central Asia, has been planted in the Great Plains for over 60 years. Early reports of performance in state and federal experiment stations in the Great Plains indicated that Russian-olive was highly adapted to Plains conditions, and was free of serious diseases and insect pests. Botryodiplodia theobromae has been identified as a cause of widespread mortality of Russian-olive in shelterbelts in Nebraska and other Great Plains States. Typically, bark, cambium, and phloem tissues are killed in strips along main stems and major branches. Necrosis is rapid along stems but slow around them, thus complete girdling may take several years.