saeedeh kermani poorbaghaei; Majid Pouryousef; ali reza yousefi; masoud rafie
Abstract
In order to evaluate the biochemical properties of dragon’s head (Lallemantia iberica L.) ecotypes’ using some anti-perspirants in rainfed conditions in the crop year 2018, an experiment has been conducted in Karaj and Khorramabad regions. The experiment is based on a randomized complete ...
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In order to evaluate the biochemical properties of dragon’s head (Lallemantia iberica L.) ecotypes’ using some anti-perspirants in rainfed conditions in the crop year 2018, an experiment has been conducted in Karaj and Khorramabad regions. The experiment is based on a randomized complete block design (RCBD) with a factorial arrangement, consisted of three replications. The first factor involves four different ecotypes of dragon’s head (Kurdistan, Takab, Nazarkahrizi, and Kalibar) and the second factor includes three anti-transpirant compounds (kaolin with a concentration of 5%, chitosan with a concentration of 1%, and Ista with a concentration of 2%) as well as no anti-transpirant (control). The results show that using anti-transpirants has increased the amount of the activity of catalase and peroxidase enzymes. Ista anti-transpirant has had a greater effect on enzyme activity than kaolin and chitosan. The highest amount of peroxidase and catalase (0.51-0.39 unit mg/protein) are obtained from the ecotypes of Kurdistan treated with Ista and Karaj cultivation, respectively. In addition, the highest grain yield and biomass yield are obtained from treatment with chitosan, which has increased by 4% to 20%, compared to the control, respectively. Based on the results, using anti-transpirants in dryland cultivation conditions improves most of the studied yield traits and biochemical traits compared to the control.
saeedeh kermani poorbaghaei; Majid Pouryousef; Alireza yousefi; masoud rafie
Abstract
This study was carried out to assess yield, yield components and quality traits of dragon’s head (Lallemantia iberica L.) ecotypes’ seeds grown using some anti-transpirant agents in rainfed system in two regions of Iran including Karaj & Khorramabad in 2018. The experiment was performed ...
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This study was carried out to assess yield, yield components and quality traits of dragon’s head (Lallemantia iberica L.) ecotypes’ seeds grown using some anti-transpirant agents in rainfed system in two regions of Iran including Karaj & Khorramabad in 2018. The experiment was performed based on a randomized complete block design (RCBD) with a 4×3 factorial arrangement consisting of three replications. The first factor consists of four different ecotypes of dragon’s head (Kurdistan, Takab, Nazarkahrizi and Kalibar) and the second factor including three anti-transpirant compounds (kaolin with a concentration of 5 Percent, chitosan with a concentration of 1 Percent and Ista with a concentration of 2 Percent) and no anti-transpirant (control). The results indicated that the triple interaction of ecotypes, anti-transpirant and location on most of the studied traits was significant. Among anti-transpirant, chitosan had the greatest effect on cultivated ecotype & increased grain, biomass, oil and mucilage yields by 20, 4, 11, and 18 Percent, respectively. Also, Nazarkahrizi, Kalibar, Kurdistan and Takab ecotypes cultivated in Karaj had the highest values in the studied traits under foliar application with anti-transpirant, respectively. According to the studies conducted in this study, the selection of a suitable ecotypes with the region and the use of antiperspirants improve the yield & yield components, quality traits of dragon’s head in rainfed cultivation conditions.
sediqe latifi; alireza yousefi; khalil jamshidi
Abstract
In order to evaluate the effects of crop cultivars and living mulchon sunflower yield and weed control, a field experiment was carried out as factorial arrangement based on a randomized complete block design with three replications in 2013. Treatements were sunflower cultivars (‘Azargol’, ...
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In order to evaluate the effects of crop cultivars and living mulchon sunflower yield and weed control, a field experiment was carried out as factorial arrangement based on a randomized complete block design with three replications in 2013. Treatements were sunflower cultivars (‘Azargol’, ‘Allstar’, ‘Farokh’) and weed control treatments (weed-free, weed-infestation and intercropping of Fagopyrum esculentum, Medicago scutellata, Vicia villosa as living mulch alone and in combination with one hand-weeding).In comparison to weedy treatement, F. esculentum, M. scutellataand V.villosa cover crops were reduced total weed biomass 43.7, 33.8 and 25 percent, and weed density 57.1, 38.1 and 29, respectively. Weed control was improved significantly when cover crops used in combination with one hand-weeding. The lowest weed biomass and density were recorded in the ‘Azargol’ cultivar. The highest Sunflower leaf area index (LAI) was obtained in ‘Azargol’ cultivar under weed-free condition. Weed interference decreased grain yield of ‘Azargol’, ‘Allstar’ and ‘Farokh’ by 18.6, 22.1 and 33.4 percent, respectively compared to weed-free plots. The highest grain yield was obtained in ‘Azargol’ cultivar. Medicago scutellataas cover crop in combination with one hand weeding resulted in yields similar to the weed-free treatment. Overall, the results of this study revealed that the use of M. scutellataas living mulch and ‘Azargol’ as competitor cultivar can be used as part of an integrated weed management for sustainable sunflower production.
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.