Species sensitivity of weeds in the early stages of development to the herbicide Flex, CE. T.V. MOROKHOVETS, V.N. MOROKHOVETS, T.V. SHTERBOLOVA, Z.V. BASAI, S.S. VOSTRIKOVA, N.S. SKORIK

Authors

  • Тамара Викторовна МОРОХОВЕЦ
  • Вадим Николаевич МОРОХОВЕЦ
  • Татьяна Владимировна ШТЕРБОЛОВА
  • Зоя Викторовна БАСАЙ
  • Светлана Сергеевна ВОСТРИКОВА
  • Нина Сергеевна СКОРИК (Дальневосточный научно-исследовательский институт защиты растений, Приморский край, с. Камень-Рыболов)

Keywords:

herbicide, weed plants, species, growth and development phase, sensitivity, toxicity, inhibition, damage

Abstract

Species sensitivity of weeds in the early stages of development to the herbicide Flex, CE. T.V. MOROKHOVETS, V.N. MOROKHOVETS, T.V. SHTERBOLOVA, Z.V. BASAI, S.S. VOSTRIKOVA, N.S. SKORIK (Far Eastern Research Institute of Plant Protection, Primorsky Krai, Kamen-Rybolov village).

In 2019–2020, the Far Eastern Research Institute of Plant Protection in the conditions of a vegetative house studied the sensitivity to the herbicide Flex, CE of the 14 most harmful and/or common weeds in soybean crops in the south of the Far East: common ragweed, Asian copperleaf, velvetleaf, false-crested elsholtzia, flower-of-an-hour, St. Paul’s wort, common lam’s-quarters, redroot pigweed, Siberian cocklebur, perennial sow thistle, yellow thistle, curly dock, mugwort and Asiatic dayflower. The herbicide was used in the norms of 0.75; 1.0; 1.25 and 1.5 l / ha with the addition of surfactants Trend 90, W (0.2 l / ha) in the early stages of weed development. The level of phytotoxicity of the herbicide preparation for the tested species was judged by the dynamics of the manifestation and degree of development of symptoms of damage to the experimental plants in comparison with the control (without treatment), as well as by the decrease in their raw aboveground mass and height. The first visually noticeable signs of the toxic effect of Flex herbicide on weeds appeared a day after treatment. The symptoms and degree of plant damage were similar for different species and were at the same level in the entire range of the drug consumption rates. 5 days after treatment, the death of all 14 experimental plants without exception was recorded. Thus, the use of Flex herbicide in soybean crops with a predominance of weed species used in the experiment at the initial stages of their development can provide the maximum level of crop protection.

Author Biographies

Тамара Викторовна МОРОХОВЕЦ

кандидат сельскохозяйственных наук, ведущий научный сотрудник,

Вадим Николаевич МОРОХОВЕЦ

кандидат биологических наук, врио директора,

Татьяна Владимировна ШТЕРБОЛОВА

научный сотрудник,

Зоя Викторовна БАСАЙ

кандидат сельскохозяйственных наук, старший научный сотрудник,

Светлана Сергеевна ВОСТРИКОВА

научный сотрудник,

Нина Сергеевна СКОРИК, (Дальневосточный научно-исследовательский институт защиты растений, Приморский край, с. Камень-Рыболов)

младший научный сотрудник

Published

2021-06-07

How to Cite

МОРОХОВЕЦ, Т. В., МОРОХОВЕЦ, В. Н., ШТЕРБОЛОВА, Т. В., БАСАЙ, З. В., ВОСТРИКОВА, С. С., & СКОРИК, Н. С. (2021). Species sensitivity of weeds in the early stages of development to the herbicide Flex, CE. T.V. MOROKHOVETS, V.N. MOROKHOVETS, T.V. SHTERBOLOVA, Z.V. BASAI, S.S. VOSTRIKOVA, N.S. SKORIK. Vestnik of the Far East Branch of the Russian Academy of Sciences, (3), 70–74. Retrieved from http://vestnikdvo.ru/index.php/vestnikdvo/article/view/763

Issue

Section

To the 45-th anniversary of Primorsky Research Institute of Agriculture