Study of weed sensitivity to the herbicide Kelvin Plus and its effectiveness in sowing corn for grain in the conditions of Primorye

The research was conducted in the Primorsky Territory at the experimental base of the Far Eastern Research Institute of Plant Protection in 2022–2024. The sensitivity of 15 weed species to the Kelvin Plus herbicide was studied in a vegetation house. Visual observations of their development after the treatments were carried out. Symptoms of herbicide action and the time of their manifestation were noted. It was found that the following are highly sensitive to the herbicide: Setaria glauca, Echinochloa crusgalli, Eriochloa vilosa, Amarаnthus retroflеxus, Elsholtzia cristata, Commelina communis, Hibiscus trionum, Siegesbeckia pubescens, and Sonchus arvensis. Sensitive plants include Polygonum persicaria, Chenopodium album, Acalypha australis, Cirsium setosum and Ambrosia artemisiifolia. Abutilon theophrasti was resistant to the drug's action. An assessment was made of the biological and economic efficiency of the herbicide Kelvin Plus at a consumption rate of 0.4 kg/ha when applied in the 5–6 and 7–8 leaf phases of corn. From the moment of application until harvest, regardless of the timing of treatment, the herbicide almost completely destroyed perennial dicotyledons, annual cereals and dicotyledons, including Ambrosia artemisiifolia, which dominated the crops in terms of growing aboveground mass. The high efficiency of applying the Kelvin Plus herbicide in the 5–6th leaf phase of the crop allowed increasing the yield by an average of 43.9 c/ha, with the yield in the control being 9.0 c/ha. A significantly smaller yield was preserved with late herbicide application – 24.5 c/ha. The interval between treatments was up to 20 days. During this period, weeds seriously competed with the crop, which impacted the resulting grain yield.

1. Gulnyashkin A.V., Novichikhin A.P., Shkarbutko E.V. Evaluation of the environmental stability and plasticity of new hybrids of corn under various agroclimatic conditions. Risovodstvo = Rice growing, 2022, vol. 56, no. 3, pp. 35–40. (In Russian). DOI: 10.33775/1684-2464-2022-56-3-35-40.

2. Perevyazka N.I., Suprunov A.I. Ecological adaptability of new early hybrids created with the parcipication of digaploid maize lines. Risovodstvo = Rice growing, 2022, vol. 57, no. 4, pp. 49–54. (In Russian). DOI: 10.33775/1684-2464-2022-57-4-49-54.

3. Klykov A.G., Potenko T.A., Mamai O.V. Evaluating the food security of the Russian Far East. Vestnik Dal'nevostochnogo otdeleniya Rossiiskoi Akademii Nauk = Vestnik of the Far East Branch of the Russian Academy of Sciences, 2023, no. 3, pp. 12–22. (In Russian). DOI: 10.37102/0869-7698_2023_229_03_2.

4. Bogdan P.M., Danilenko I.N., Kraskovskaya N.A. Productivity of corn hybrids of domestic selection in the conditions of Primorsky krai. Dal'nevostochnii agrarnii vestnik = Far Eastern Agrarian Bulletin, 2023, vol. 17, no. 3, pp. 5–12. (In Russian). DOI: 10.22450/19996837_2023_3_5.

5. Zharikova E.A., Burdukovskii M.L., Golodnaya O.M. Agrochemical parameters of the fertility of the arable meadows differentiated soils of the Primorsky region in the conditions of longterm agricultural use. Agrokhimiya = Agricultural Chemistry, 2023, no. 2, pp. 3–9. (In Russian). DOI: 10.31857/S0002188123020138.

6. Kurdyukova O.N. Seed productivity and viability of weed seeds in various soil types. Isvestiya Timiryazevskoi sel'skokhozyaistvennoi Akademii = Isvestiya of Timiryazev Agricultural Academy, 2023, no. 1, pp. 68–80. (In Russian). DOI: 10.268970021-342X-2023-1-66-80.

7. Panfilov A.E., Kazakova N.I., Tsymbalenko I.N. Zonal features of the segetal component of corn agrophytocenoses in the Eastern part of the Ural region. Zemledelie = Zemledelie, 2020, no. 2, pp. 39–43. (In Russian). DOI: 10.24411/0044-3913-2020-10210.

8. Semynina T.V., Razumeyko I.N., Zheltu khin E.N. Features of pest infestation in maize crops in the conditions of the forest-steppe of Central Chernozem region and control methods for pests. Zashchita i karantin rastenii = Plant Protection and Quarantine, 2024, no. 6, pp. 22–25. (In Russian). DOI: 10.47528/1026-8634_2024_6_22.

9. Shpanev A.M. The harmfulness of weeds in oat agrocenosis with underseeding of perennial grasses in the north-west of the Russian Federation. Vestnik Rossiiskoi sel'skokhozyaistvennoi nauki = Vestnik of the Russian Agricultural Science, 2024, no. 3, pp. 16–21. (In Russian). DOI: 10.31857/S2500208224030031.

10. Perederieva V.M., Vlasova O.I., Dorozhko G.R., Volters I.A., Trubacheva L.V. The influence of long-term use of various methods of basic tillage for winter wheat on the weed component of agrophytocenosis. Zemledelie = Zemledelie, 2023, no. 6, pp. 21–23. (In Russian). DOI: 10.24411/0044-3913-2020-10210.

11. Mikhaylikova V.V., Strebkova N.S. Dynamics of pesticide use in the Russian Federation. Agrokhimiya = Agricultural Chemistry, 2023, no. 9, pp. 37–41. (In Russian). DOI: 10.31875/S0002188123090089.

12. Makhankova T.A., Dolzhenko V.I., Golubev A.S Formation of an assortment of herbicides in Russia. Agrokhimiya = Agricultural Chemistry, 2022, no. 11, pp. 50–61. (In Russian). DOI: 10.31857/S0002188122110084.

13. Panfilov A.E. Influence of phytocenotic and hydrothermal conditions on the efficiency of cross-spectrum herbicides in corn crops. Agrokhimiya = Agricultural Chemistry, 2022, no. 7, pp. 40–49. (In Russian). DOI: 10.31857/S0002188122070109.

14. Kolesnik S.A., Stashkevich A.V., Kislyushko P.M. Development of a range of herbicides for the protection of corn crops in Belarus. Zashchita i karantin rastenii = Plant Protection and Quarantine, 2021, no. 1, pp. 18–21. (In Russian).

15. Golubev A.S., Makhankova T.A., Komarova A.S. Efficiency and safety of application of herbicide Kelvin Plus and corn at different crop stages. Agrokhimiya = Agricultural Chemistry, 2021, no. 3, pp. 38–44. (In Russian). DOI: 10.31857/S000218812103008X.