Effect of Environmental-Friendly Control for White Stain Symptom on Grape

Abstract

BACKGROUND: White stain symptom caused by Acremonium acutatum and Trichothecium roseum, is one of the most important diseases on the grape. This disease occurs national-wide in Korea and causes irreversible damage on grape, at harvest season. This study was conducted to develop environment-friendly control method against white stain symptom. METHODS AND RESULTS:Environment-friendly materials were tested for control activity against A. acutatum and T. roseum in vitro and in vivo. The effect of environment-friendly materials against white stain symptom on grape in farmer's greenhouse was examined. The materials, NaDCC and sulphur, were sprayed three times on the leaves and fruit of grape at the two sites of farmer's field, Anseong and Hwaseong of Gyeounggi. To evaluate control effect of NaDCC and sulphur against white stain symptom, the disease severity was investigated after the two materials were sprayed from the disease onset three times at the 7-day intervals. NaDCC showed efficacy of 59.71% for Kyoho and 72.26% for Campbell-Early, and

Suppression of Melanose Caused by Diaporthe citri on Citrus Leaves Pretreated with Bio-sulfur

“…Mycelium growth of gray mold caused by B. cinerea on grapefruits is inhibited by treatment with sulfur dioxide fumigation, resulting in decreased severity of gray mold (Gabler et al, 2010). Also, inhibition of mycelium growth by sulfur can control disease caused by Acremonium acutatum or Trichothecium roseum on grapes (Oh et al, 2014). In case of peach fruit fumigated with sodium hydrosulfide, mycelium development of Monilinia fructicola causing brown rot is reduced, resulting in less disease incidence (Wu et al, 2018).…”