Mahboobeh Fizabadi; Zahra Ghahremani; Taher Barzegar; Ahmad Golchin
Abstract
Today, the production of healthy and high quality seedlings is the main factors of success in growing vegetables such as tomato. Hence, in order to investigate the effect of different levels of vermicompost and nitrogen on the growth parameters of tomato seedlings (Lycopersicon esculentum Mill. cv. Rio ...
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Today, the production of healthy and high quality seedlings is the main factors of success in growing vegetables such as tomato. Hence, in order to investigate the effect of different levels of vermicompost and nitrogen on the growth parameters of tomato seedlings (Lycopersicon esculentum Mill. cv. Rio Grande), a factorial experiment was conducted in a randomized complete design with three replications in 2014 at the research greenhouse of Department of Horticultural Science, University of Zanjan. Treatments consisted of five vermicompost levels (0, 5, 10, 20 and 40 wt %) and nitrogen at five levels (0, 25, 50, 100 and 200 mg N/kg soil). The results showed that nitrogen treatments caused a significant increase in seedling growth. The maximum seedling height, dry weight of root and stem, fresh weight of stem, leaf area and chlorophyll content was observed in 100 mg N/kg Soil. The vermicompost treatments significantly increased seedling growth, so the highest seedling height, internodes length, root and stem length, fresh and dry weight of root and leaf area was obtained in the 10 wt% vermicompost. Also vermicompost caused a significant decrease in growth period of transplant and the minimum period (39.6 days) was recorded in the 10 wt% vermicompost. According to the results the concentration of N. P and K in leaf increased with application of vermicompost. Application of 100 mg N/ kg soil and 10 wt% vermicompost improved seedling growth
Fatemeh Hosseini; Mohamad mohsen Montazeri; Nasser Bagherani
Abstract
To examine the effect of mixing graminicide herbicides with liquid fertilizer in Gorgan region, an experiment was conducted as factorial arranged in Complete Randomized Block Design [RCBD] with three replications at the research farm of Islamic Azad University of Gorgan. The first factor was using Topic, ...
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To examine the effect of mixing graminicide herbicides with liquid fertilizer in Gorgan region, an experiment was conducted as factorial arranged in Complete Randomized Block Design [RCBD] with three replications at the research farm of Islamic Azad University of Gorgan. The first factor was using Topic, Pumasuper and Axial herbicides with the amounts of 0.8, 1, and 0.5 l/ha-1, respectively. The second was the amounts of 0.75, 1.5, and 3 kg/ha-1 complete fertilizer. No herbicide or fertilizer treatments were also considered for factors. The effect of treatments on wheat was determined by measuring the dry matter production in 15 days intervals. Yield and its components of wheat have also determined at plant maturity. Adding complete fertilizer to the herbicides, significantly increased wheat dry matter production. the interactive effect of RGR levels, decreasing complete fertilizers and used herbicides on the number of ears were significant. Wheat yield was 267, 265 and 229 g.m-2 in Topic, Pormasuper and Axial [alone] treatments. Combining higher level of fertilizer with Topic, Pormasuper and Axial herbicides, increased wheat yield about 13, 6 and 14 %, respectively.