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Weediness of rice crops cultivated on different forecrops under periodic irrigation in the Lower Volga region conditions
https://doi.org/10.26898/0370-8799-2024-10-4
Abstract
The ways to reduce water inputs in the most water-intensive sector of agricultural production related to rice irrigation have been studied. In irrigated agriculture, it is the dominant and most water-intensive crop. Experimental data on weediness of rice crops irrigated with intermittent waterings depending on the preceding crops are presented. Every year weeds infest agricultural crops leading to a significant reduction in yields and crop quality. The results of the study make it possible to determine the species composition of weeds and weed control measures through the treatment of rice crops with a tank mixture of herbicides. Total water consumption of the crop by different forecrops has been determined. As a result of the observations, the main weed species have been identified, which included the following weed species: redroot amaranth, barnyard grass (prickly grass), corn bindweed and other representatives of the weedy vegetation. Soil herbicide Stomp (6.0 l/ha) was used in combination with treatment of the rice plants with a tank mixture of Cambio (2.5 l/ha) + Topik (0.5 l/ha) herbicides dissolved in 200 liters of water. Also in the work, the data on structural indices of rice plants on different forecrops are indicated, which allowed to establish the actual yield. As a result of the data obtained, it was established what forecrop is effective both for reducing weediness of crops and obtaining the highest yield of the rice plants in the variants of the experiment.
About the Authors
K. A. Rodin
All-Russian Research Institute of Irrigated Agriculture – Branch of the Federal Scientific Center for Hydraulic Engineering and Land Reclamation named after A. N. Kostyakov
Russian Federation
Russian Federation
Konstantin A. Rodin, Candidate of Science in Agriculture, Lead Researcher
Volgograd
A. B. Nevezhina
All-Russian Research Institute of Irrigated Agriculture – Branch of the Federal Scientific Center for Hydraulic Engineering and Land Reclamation named after A. N. Kostyakov
Russian Federation
Russian Federation
Ainagul B. Nevezhina, Candidate of Science in Agriculture, Senior Researcher
400002; 9, Timiryazeva St.; Volgograd
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Review
For citations:
Rodin K.A., Nevezhina A.B. Weediness of rice crops cultivated on different forecrops under periodic irrigation in the Lower Volga region conditions. Siberian Herald of Agricultural Science. 2024;54(10):40-47. (In Russ.) https://doi.org/10.26898/0370-8799-2024-10-4
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