Zoleikha Sharifi; ahmad zare; Elham Elahifard; alireza abdali
Abstract
Objective: In order to evaluate different levels of wheat straw mulch and herbicide on quantitative, qualitative yield and weeds control of fennel (Foeniculum vulgare MIL.) an experiment was conducted arranged as split-plot based on a randomized complete block design (RCBD) with 3 replications at Agricultural ...
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Objective: In order to evaluate different levels of wheat straw mulch and herbicide on quantitative, qualitative yield and weeds control of fennel (Foeniculum vulgare MIL.) an experiment was conducted arranged as split-plot based on a randomized complete block design (RCBD) with 3 replications at Agricultural Sciences and Natural Resources University of Khuzestan during 2019-2020 growing season.
Methods: Treatments included different concentrations of linuron herbicide (0, 1.5, 3, 4.5 L/ha) as the main plot and different levels of wheat straw mulch (0, 3, 6, 9 and 12 tons /ha) as the subplot.
Results: The results revealed that the lowest dry weight of broadleaf and grass weeds (73 and 15 g/ m2) of 4.5 L/ha herbicide and 9 and 12 tons’/ha mulch was obtained. The highest grain yield was observed (80 g/m2) in 3L/ha of herbicide application and wheat straw mulch 9 ton/ha, and the lowest (18 g/m2) in treatment non-application of mulch and herbicide. The highest essential oil yield of fennel (2.82 g/m2) was obtained in treatment herbicide application (3 L/ha) and straw mulch (9 ton/ha), while in treatment non-application of mulch and herbicide was 0.48 g/m2.
Conclusion: Therefore, in integrated weed management, the use of wheat straw mulch could be considered for reducing weeds competition and achieving sustainable agriculture in medicinal plants.
Seyed Shahram Shafiye; Hasan Mohammad Alizade; Hossein Moghadam; Ali Reza Yousefi
Abstract
To study the effect of different weed control methods in tomato, an experiment was conducted as completely randomized block design with three replications at the research farm of University of Tehran (Karaj) in 2008. The treatments consisted of post emergence (at recommended rate) or pre emergence (reduced ...
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To study the effect of different weed control methods in tomato, an experiment was conducted as completely randomized block design with three replications at the research farm of University of Tehran (Karaj) in 2008. The treatments consisted of post emergence (at recommended rate) or pre emergence (reduced rate in combination with mulch) application of metribuzin, rimsulfuron and sulfosulfuron, and also different binary combinations of these herbicides which applied post or pre emergence (in combination with mulch), metribuzi+haloxyfop-methyl, trifluralin+metribuzin, and also mulch alone, weed free and weedy checks. Traits such as weed density and biomass, tomato fruit yield and biomass were evaluated. The results showed that only post emergence application of sulfosulfuron (92%), sulfosulfuron+rimsulfuron (93%) controlled bindweed effectively. However, all herbicide treatments provided good (more than 80%) to excellent (more than 90%) control of redroot pigweed, smooth pigweed and common purslane. Tomato response to rimsulfuron, sulfosufuron and mtribuzin consisted of chlorosis in new terminal growth that recovery occurred after 4 weeks. The results suggest that acceptable control of different weed species in tomato could be obtained by pre-emergence application of rimsulfuron, sulfosufuron and metribuzin in combination with either mulch or post-emergence herbicide.