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Effect of fruit tree viruses

, : Effect of fruit tree viruses. Acta Horticulturae: 59-82

a. Campbell, A.I.; Posnette, A.F.; Cropley, R. (Long Ashton Res. Sta., UK). The performance of EMLA apple trees (59-65). Apple orchards on different clonal rootstocks were planted 8-10 yr ago in England to compare the growth, cropping and general performance of East Malling and Long Ashton (EMLA) material with trees infected with several viruses and mycoplasma-like organisms. Most of the infections reduced tree growth, crop wt. and fruit size.

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