Affiliation:
1. Institute of plant protection, ag Priluki, Minsk district, Belarus
Abstract
Physical and chemical properties of fungicides applied for protection of cereals against diseases in Belarus and their mobility in plant tissues are analyzed. The main properties allowing to predict plant mobility of fungicides are water solubility, lipophilicity (partition coefficient – LogP), and dissociation constant (pKa). The higher partition coefficient in nonpolar molecules, the higher are their nonsystemic (contact) properties, and vice versa. For polar molecules, the lower dissociation constant, the higher their mobility in plants. Information of fungicides plant mobility allows to understand their action on pathological process. In nonsystemic (contact) molecules with high LogP have affinity to wax layer of cuticle. Therefore they have good protection (prevention) properties because of their ability to prevent spores germination. Molecules with acropetal properties have good curative action because of their mobility in xylem away from application site. Therefore they may prevent mycelium development after its penetration in plant tissues.
Publisher
All-Russian Institute of Plant Protection
Reference25 articles.
1. Буга СФ (2013) Теоретические и практические основы химической защиты зерновых культур от болезней в Беларуси. Несвиж: «Несвижская укрупненная типография им. С. Будного». 240 с.
2. Гришечкина ЛД, Долженко ВИ, Кунгурцева ОВ, Ишкова ТИ и др (2020) Развитие исследований по формированию современного ассортимента фунгицидов. Агрохимия 9:32–47. https://doi.org/10.31857/S0002188120090070
3. Долженко ВИ, Сухорученко ГИ, Лаптиев АБ (2021) Развитие химического метода защиты растений в России. Защита и карантин растений 4:3–13
4. Михайликова ВВ, Стребкова НС (2015) Использование средств защиты растений в Российской Федерации. Агрохимия 12:56–59
5. Юрин ВМ, Демидчик ВВ, Филипцова ГГ, Кудряшов АП и др (2014) Минеральное питание, физиология стресса и адаптация растений. Учебно-методическое пособие. Мн, БГУ. 103 с.