Effectiveness of the Concord fungicide in the treatment of vegetative rice plants
https://doi.org/10.26898/0370-8799-2020-2-4
Abstract
The results of research into rice sown for grain (2017–2018) are presented. The effectiveness of Concord fungicide (active ingredients tebuconazole, 125 g/l; triadimefon, 100 g/l) against rice Pyricularia was studied. The experiment was conducted in the conditions of the greenhouse experiment in the Primorsky Territory. Artificial inoculation of plants was carried out in the phase of 4–5 leaves with a suspension of conidia of the fungus Pyricularia oryzae Broomeet Cavara (concentration of 100 thousand in 1 ml). The test results were compared with the action of the preparation Favorit (active ingredients tebuconazole, 125 g/l; triadimefon, 100 g/l). Concord fungicide was used once on the next day after inoculation at a normal rate of 0.75; 1.0 and 1.25 l/ha. Under the influence of the preparation, the damage to rice plants decreased by 57.5% (0.75 l/ ha); 70.0 (1.0) and 69.5% (1.25 l/ ha) compared to the control. The use of fungicide contributed to an increase in plant growth by 7.6– 13.3 cm, and panicle length by 1.4–2.9 cm, and had a positive effect on the number of grains and the weight of grains in an ear. With the action of Concord, the mass of 1000 grains increased by 1.38 (0.75 l/ha); 2.14 (1.0) and 3.03 g (1.25 l/ha) compared to the control. The positive effect of fungicidal treatments of rice crops led to obtaining an additional grain yield. Concord does not show a phytotoxic effect and does not have a retardant effect on rice plants. The maximum indicators of biological efficiency were obtained with the use of the preparation at a flow rate of 1.0 and 1.25 l/ha. In agro-climatic conditions of the south of the Far East, Concord fungicide proved to be effective for protecting rice vegetating plants from Pyricularia.
About the Authors
S. V. Bezmutko
The Far Eastern Research Institute of Plant Protection
Russian Federation
Russian Federation
Researcher
42a, Mira St, Kamen-Rybolov, Primorsky Territory, 692684
V. N. Lelyavskaya
The Far Eastern Research Institute of Plant Protection
Russian Federation
Russian Federation
Junior Researcher
Kamen-Rybolov, Primorsky Territory
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Review
For citations:
Bezmutko S.V., Lelyavskaya V.N. Effectiveness of the Concord fungicide in the treatment of vegetative rice plants. Siberian Herald of Agricultural Science. 2020;50(2):32-38. (In Russ.) https://doi.org/10.26898/0370-8799-2020-2-4
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