Fontes de fosfito e acibenzolar-s-metil no controle de doenças e produtividade do tomateiro
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Data
2008-03
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With the objective of evaluate the effect of the phosphite on the disease control and yield of
tomato crop two trials were condueted al Unilever Bestfood experimental area in Goiânia-GO and at a commercial field
in Hidrolândia-GO. In the first trial using the hybrid of industrial tomato H-9992, the statistical design was randomized
blocks with 13 trataments and four replications. The treatments were: 1-MaxFitus 40; 2-MaxFitus 30; 3-potassium 20; 4-
Phosphorus-K; 5-Kemifos; 6-Foskalium; 7-Nutriphite; 8-Nutril; 9-Hortiphus; 10-Kendal; 11-BioPower; 12 - Bion and 13-
control. In the second trial using the hybrid Stylus, the treatments number 3, 4, 5, 7, 9, 12 and 13 were tested ogain and
also the product Phytus K. The statistical design was randomized blocks with 8 trataments and 3 replications. Bolh trials
were weekly sprayed wilh the products (treatments) in addition to the other pestcides regularly used. In the first trial we
evalvated the severity of Xanthomonas campestris pv. Vesicatoria, the yield and level of soluble solids. In the second trial
the incidence of Erwinia spp., severity of Phytophthora infestans and number of truits per plant were evalvated. The
different phosphite formulations neither increased the yield in both trials nor the level of soluble solids in the second trial.
There was a tendency of reduction of the severity of the X. campestris pv. Vesicatoria in the trial I with the use of
phosphite. The incidence of Erwinia sp. Was reduced in the trial II and the efficiency of products went up 89%. The
products used in the trial II did not reduce the severity of P. infestans, which increased during the evalvation period.
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Fosfito, Erwinia spp., Xanthomonas campestris, Phytophtora infestans, Phosphite, Erwinia spp., Xanthomonas campestri, Phytophtora infestans
Citação
NASCIMENTO, Abadia dos Reis; FERNANDES, Paulo Marçal; ROCHA, Mara Rúbia da ; SILVA, Edgar Alves da. Fontes de fosfito e acibenzolar-s-metil no controle de doenças e produtividade do tomateiro. Bioscience Journal, Uberlândia, v. 24, n. 1, p. 53-59, jan./mar. 2008.