Godarz Ahmadvand Articles List

List of Articles Godarz Ahmadvand

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1 - Investigating Resistance of Wild Mustard (Sinapis arvensis L.) ‎Populations to Tribenuron-Methyl Herbicide
&lrm; Mehdi Afshari Ali Ghanbari Mehdi Rastgoo Javid Gherekhloo Goodarz Ahmadvand

Tribenuron-methyl is commonly used for post emergence control of broad leaf weeds in wheat fields. In order to survey suspicious resistant weeds in wheat fields to this herbicide thirty-eight fields of Kermanshah province were investigated during 2012- 2013. Seeds of su More

Tribenuron-methyl is commonly used for post emergence control of broad leaf weeds in wheat fields. In order to survey suspicious resistant weeds in wheat fields to this herbicide thirty-eight fields of Kermanshah province were investigated during 2012- 2013. Seeds of suspected resistance of wild mustard were gathered and tested in a randomized complete blocks design experiment with three replications. First, for early detection of herbicide resistance, the suspected population was screened using discriminating dose of tribenuron-methyl. Determining of the resistance degree was conducted by whole plant bioassay tests using dose-response curves. The resistance mechanisms were assayed by molecular methods, especially using the ALS gene cloning by PJET1.2/blunt Vector. For susceptible populations, the concentration required for complete control was 10.4 g ai ha-1 tribenuron-methyl. Also, in screening tests 50% of populations as resistant populations were identified. According to the Beckie and Tardif, it was found that 57.8% of these population did have a very high degree of resistance, 31.5% with high resistance and 10/5% with low resistance degree. GR50 of the resistant weeds was also increased as compared to sensitive weed, which indicates resistance in this province, Thus to control the resistant populations Z15, this amount increased to 1309 g ai ha-1.The results of DNA sequencing showed that mutation by replacing proline amino acid at position Ala122 causes resistance based on target-site mutation. Manuscript profile
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2 - The Effect of Biological and Chemical Phosphorus Fertilizers on Radiation Use Efficiency, P Concentration and Yield of Wheat Cultivar (Pishgam)
Somayeh Vejdani Aram Goudarz Ahmadvand Somayeh Hajinia

To evaluate the effect of biological and chemical phosphorous fertilizers on radiation use efficiency, P concentration and yield of wheat cultivar (Pishgam) A field study was carried out as a factorial experiment based on a randomized complete block design with three re More

To evaluate the effect of biological and chemical phosphorous fertilizers on radiation use efficiency, P concentration and yield of wheat cultivar (Pishgam) A field study was carried out as a factorial experiment based on a randomized complete block design with three replications, in 2011-2012 at the Agricultural and Natural Research Station of Hamedan province. The factors were three levels of phosphorus fertilizer (P1) 0, (P2) 22.5 and (P3) 45 kg.ha-1 diammonium phosphate of based on soil test and five levels of biofertilizer applications: non-biofertilizer application (B1), biofertilizer application at the rate of 100 g.ha-1 at planting (B2), biofertilizer application in two stages, at the rate of 100 g.ha-1 at planting and 100 g.ha-1 in the spring (B3), biofertilizer application at the rate of 200 g.ha-1 at planting (B4), biofertilizer application in two stages, at the rate of 200 g.ha-1at planting and 200 g.ha-1 in the spring (B5). The results showed the highest leaf area index (5.8 and 5.7, respectively) was produced in biofertilizer of B4 and B3 levels with application of 45 kg ha-1 diammonium phosphate. Application of 45 kg.ha-1 diammonium phosphate  with biofertilizers of B2, B5, B4 and B3 levels, caused an increase in total dry matter about 29.7, 25.9, 4.0 and 2.5 percent, respectively, as compared to that of control. The highest radiation use efficiency of 2.45 g.mj-1 belonged to 45 kg.ha-1 diammonium phosphate with biofertilizers of B4 which was 23 percent more than that of control. Bio-fertilizer of B3 and B2 levels increased grain yield of wheat by 9.8 and 9.3 percent, respectively, as compared to that of control. Finally it can be stated that biofertilizer Barvar-2, resulted in the increase of grain yield. Manuscript profile
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3 - Effect of Light Radiation Absorption and Its Use Efficiency in Intercropping of Soybean and Millet Under Water Deficit Stress
Somayeh Hajinia Goudarz Ahmadvand

To study the effect of water deficit stress on leaf area, radiation use efficiency and dry matter production of soybean and millet in intercropping, a split plot experiment based on randomized complete block design with three replications was carried out, in 2015 at the More

To study the effect of water deficit stress on leaf area, radiation use efficiency and dry matter production of soybean and millet in intercropping, a split plot experiment based on randomized complete block design with three replications was carried out, in 2015 at the Research Station of Agricultural Faculty of Bu-Ali Sina University. The main factor consisted of three levels of water deficit stresses (irrigation after 60, 90 and 120 mm evaporation from pan) and sub factor of five replacement intercropping treatments sol cropping of soybean (100S), sol cropping of millet (100M), 67 % S+ 33 % M (67S:33M), 50 % S+ 50 % M (50S:50M) and 33 % S+ 67 % M (33S:67M). The results showed that the highest leaf area index of soybean and millet in sol cropping were 5.68 and 3.23 respectively. Severe water deficit stress significantly decreased leaf area index of soybean and millet by about 30.03 and 30.33 percent, respectively, as compared to well-watered condition. The highest dry matter (613 and 540 g.m-2) belonged to sol cropping of soybean and millet, respectively. Severe water deficit stress reduced dry matter of soybean and millet by 39.87 and 31.556 percent respectively as compared to the control. Radiation use efficiency of millet in (33S:67M), (50S:50M) and (67S:33M) intercropping ratios were 24.85, 29.86 and 26.76 percent more than sol cropping of millet, respectively. Radiation use efficiency of soybean reduced in the intercropping. Mean radiation use efficiency of soybean in growing season ranged from 0.97 g.mj-1 in the (33S:67M) ratio to 1.77 g.mj-1 in the sol cropping of soybean. The results showed a negative effect of water deficit stress on radiation use efficiency of both millet and soybean. Manuscript profile

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List of Articles Godarz Ahmadvand