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A field experiment was conducted on a very good rye soil complex to study the effect of contact fungicides to control Phytophihora infestans on tuber yield and quality of six potato cultivars. The following fungicides were used: Dithane M-45, Miedzian 50, Cynkomiedzian and Cynkotox. Nitrogen rates were as follows: 0, 50, 100, 150 and 200 kg N/ha. The applied fungicides increased the tuber yield by...
The investigations were carried out in laboratory conditions on the PDA medium as well in greenhouse and field conditions on pea cultivar variety Konserwowy. Seeds were inoculated by Ascochyta pinodes and Phoma medicaginis var. pinodella. It has been pointed out, that in vitro investigations the seed dressing PB-91 in 100X inhibited the growth of Ascochyta pisi, A. pinodes, P. medicaginis var. pinodella...
The paper contains results of 2-year investigations on chemical protection of tomato against P. infestans. The following fungicides were tested Alistts, Bravo 500, Ridomil plus 45 and new Polish preparations: Bravissino 500 SC (cuprous hydrochloride + chlorothalonil) and Fytox 450 SC (cuprous hydroxychloride + metelaxyl). All tested fungicides effectively protected tomato against P. infestans. It...
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