Pharmaiod efficacy in elimination of golden potato nematodes in soil

Abstract

The purpose of the research is to study the possibility of Pharmaiod application for golden potato nematode (GPN) decontamination in soil.Materials and methods. The object of research was GPN population recovered with soil from the APF "Russia", Vladimir Region. Tubers of susceptible potato cultivar Sineglazka (hybrid 15555) were used. Experiment to evaluate treatment effects and rates of experimental powder and liquid forms of Pharmaiod was carried out in pots by biotesting.Results and discussion. The obtained data showed that GPN larvae in soil samples died post application of powder form of Pharmaiod at dose level of 0.5% and 1%. Following application of 0.1% Pharmaiod alive GPN larvae were found in separate cysts. Pharmaiod liquid form significantly reduced the number of GPN females on roots (biological efficiency - 96%). Liquid form (at dose level of 0.5% and 0.1%) and powder form (0.1%; 0.5%; 1%) of Pharmaiod appeared to be phytotoxic: the tubers did not germinate and did not form a root system.

The effect of Farmayod on nematodes of different trophic groups <i>in vitro</i> and <i>in vivo</i>

“…В опытах по обеззараживанию почвы от личинок ЗКН фармайод в 0,1%-ной концентрации в почве сохранилось только 7,5% сапробиотических нематод, в других вариантах почвенная фауна нематод сохранилась [3]. Одной из возможных причин может быть разный субстрат для выращивания растений.…”

“…В дозе 0,1% жидкий препарат снизил численность нематод в 15 раз по сравнению с контролем. Обработка почвы 0,01%-ным жидким фармайодом снизила численность личинок ЗКН, но не повлияла на численность нематод других экологических групп [3]. Жидкий фармайод в дозе 0,5 и 0,1% был фитотоксичен: клубни погибли.…”