| Abstrakt: |
Background and Objective: One of the most important problems of tomato cultivation is the damage of weeds to this plant. There are several ways to control weeds in a tomato field. The use of herbicides is very common. However, due to environmental problems, high cost, resistance to weeds and threats to human health and the environment, their use has been questioned. The use of cover crops can be considered a good alternative to unprincipled tillage and the use of herbicides. Materials and Methods: This research was conducted in the years 2020-2021 in the research farm of Razi University. The aim of this study was to evaluate the effect of cover plants of cluster flower vetch and Iranian clover as pure and combinatorial cultivation on yield and weed control of tomato field. Results: Treatment of 50% vetch residues + 50% clover residues and 100% clover residues were better in control of weeds and tomato yield than control and other treatments. In the control treatment, the lowest tomato yield and weed control were observed. Yield in 50% vetch + 50% clover and 100% clover residues were 67.25 and 66.51 t ha-1, respectively, while the yield in control treatment was 14.43 t ha-1 . Weed density in 50% vetch + 50% clover and 100% clover residues was 9 and 8 plants per square meter, respectively, and in control treatment was 30 plants per square meter. Weed density in 50% vetch + 50% clover and 100% clover residues was 9 and 8 plants per square meter, respectively, and in control treatment was 30 plants per square meter. Conclusion: In general, the use of cover crops and their residues in the field can be a good environmental and economic method to control weeds and reduce the use of chemicals in the field. [ABSTRACT FROM AUTHOR] |
