List of Articles سلیمان محمدی

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  1 - Grouping of Late Maturing Corn Hybrids in Relation to some Agronomic Traits
  S. Mohammadi L. Alivand F. Farahvash H. Hamzeh K. Anvari S. Arefi
  Study the relationships of some agronomic traits with grain yield of 14 late maturing corn hybrids, an experiment based in RCBD with four replications was carried out at Miyandoab Agricultural and Natural Resources Research Station in 2009. Results showed that there wer More

  Study the relationships of some agronomic traits with grain yield of 14 late maturing corn hybrids, an experiment based in RCBD with four replications was carried out at Miyandoab Agricultural and Natural Resources Research Station in 2009. Results showed that there were significant differences among corn hybrids for plant and ear height, number of kernel row and kernel numbers per ear, 1000 kernel weight, biological yield and grain yield. Hybrid KLM76005 × MO17 produced highest grain yield. Grain yield had high positive significant correlations with biological yield and harvest index. Stepwise regression analysis showed that traits like harvest index, biological yield and 1000 kernel weight justified the grain yield variation. Path analysis indicated that these traits had the highest positive direct and significant effect on grain yield. Based on the cluster analysis results, corn hybrids under study divided into 5 groups. Groups number 2 and 3 in cluster analysis did have higher mean values for effective traits on grain yield (harvest index, biological yield and 1000 kernel weight) as compared to the others. Grain yield had negative significant correlation with GDD at tasseling time and total GDD during growing season. Based on principle components analysis basic vector values two factors explained data total variation by 80.3 %. Based on results obtained it can be concluded that Hybrid KLM76005 × MO17 due to its higher biological yield and harvest index would be the best option to be recommended. Manuscript profile
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  2 - The Effects of Different Sources of Phosphorous and its Solubilizing Bacteria on Growth of the Hybrid Corn (KSC 704)
  سلیمان Mohammadi L. Houshmand H. Kazemi-e- Arbat V. Rashidi S. Arefi
  To study the effects of phosphorous of different sources and its solubilizing bacteria on the corn growth an experiment was conducted at Miyandoab Agricultural and Natural Resources Research Station in 2005 in Iran. The arrangement of experiment was factorial based on R More

  To study the effects of phosphorous of different sources and its solubilizing bacteria on the corn growth an experiment was conducted at Miyandoab Agricultural and Natural Resources Research Station in 2005 in Iran. The arrangement of experiment was factorial based on RCB design with three replications. Treatments consisted of four levels of phosphate solubilizing bacteria: control, thiobacillus bacteria, phosphate solubilizing bacteria and Thiobacillus bacteria and phosphate solubilizing bacteria and three levels of fertilizer: without fertilizer, rock phosphate and triple super phosphate. In this study 0.5 m2 of each plot was sampled every 15 days intervals and were studied the dry matter per unit area (TDM), leaf area index (LAI), crop growth rate (CGR) and relative growth rate (RGR) were analyzed. The results showed that the application of thiobacillus bacteria + phosphate solubilizing bacteria + triple super phosphate increased total dry matter (TDM) and crop growth rate (CGR), while relative growth rate (RGR), decreased. LAI increased slowly during early growing stage but increased rapidly when growth proceeded. The highest LAI (4.3), TDM (3451 gr/m2) and CGR (5.41 gr/m2) were obtained from the application of thiobacillus + phosphate solubilizing bacteria triple super phosphate. Similar results were obtained by the application of thiobacillus + phosphate solubilizing bacteria + rock phosphate. It seems that application of thiobacillus + phosphate solubilizing bacteria is useful for availability of phosphorous to plant. Also, application of rock phosphate, due to low cost, availability of phosphorous to plant and its decreased effect on environment pollution can be used instead of other sources of phosphate fertilizers such as triple super phosphate.   Manuscript profile
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  3 - Mixed-cropping and Its Effects on Yield and Agronomical Traits of Barley (Hordeum vulgar L.) and Bersim Clover (Trifolium alexanderium L.)
  S. Mohammadi N. Khalil Agdam A. Khoshnejad M. Pour Yousef N. Jalilnejad
  Mixed-cropping of barley (Hordeum vulgar L.) and clover (Trifolium alexanderium L.) was studied in a randomized complete block design with 4 replications to detect their best planting patterns at Agriculture Research Center of Miandoab. The experiment comprised of 10 tr More

  Mixed-cropping of barley (Hordeum vulgar L.) and clover (Trifolium alexanderium L.) was studied in a randomized complete block design with 4 replications to detect their best planting patterns at Agriculture Research Center of Miandoab. The experiment comprised of 10 treatments: 9B:1C (nine rows of barley: one row of annual clover), 8B:2C, 7B:3C, 6B:4C, 5B:5C, 4B:6C, 3B:7C, 2B:8C, 1B:9C and sole croppings of each plants. The results indicated that intercropping as a whole had a significant effect on number of stem, plant height and yield of clover. On other hands, the highest clover yields (8.3 t/ha) was achieved in sole cropping and lowest (1.2 t/ha) in 10:90 (Barley: Clover) treatment. Results also showed that spike length, number of seed per spike, 1000-grain weight, protein percent, economical yield and biological yield were affected by mixed-cropping. Reducing planting rows of barley relative to clover caused 87% reduction in both economical and biological yields. 1000-grain weight also decreased from 45.82 to 39g. Total LER was 1 in all of patterns and in 40:60 (barley: clover) pattern was the highest. LER calculated based on forage in two crops was similar to LER which achieved on seed yield of barley and forage yield of clover. Decreasing in rows of barley diminished LER to <1 and when density of barley decreased in field, LER reached to <1. Overall, results showed that the best pattern planting for barley-clover Mixed-cropping for forage and for forage production in clover and seed yield in barley was 40:60 (barley: clover). Manuscript profile
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  4 - Wheat Lines under Normal and Grain Filling Stage Water Stress Conditions
  اسماعیل Mahmoodi S. Mohammadi J. Saba
  To identify drought tolerant genotypes, by using different indices and presenting the best indices, four separate trials at the Agricultural Research Stations of Miyandoab, Mashhad, Hamedan, and Ardabil, were conducted with 18 wheat lines and two checks in a randomized More

  To identify drought tolerant genotypes, by using different indices and presenting the best indices, four separate trials at the Agricultural Research Stations of Miyandoab, Mashhad, Hamedan, and Ardabil, were conducted with 18 wheat lines and two checks in a randomized complete block design with three replications during 2006-2007, under full-irrigation and exposing the lines to drought stress at grain filling stage. Result showed that lines 2(C-80-4) and 8(Bkt/90-Zhong 87), also named as Mihan variety, having the maximum values of MP, GMP, STI, HARM, RDI and the least values of TOL and SSI indices, identified to be as high grain yielders in both full irrigation and water deficit at grain filling stage. The significant and positive correlations of YP and YS with MP, GMP, STI, and HARM, indicated that they are the proper indices to select high yielding wheat genotypes under stress and non-stress conditions. According to principle component analysis, two components justified 99.83% of all variations. First vector showed 70.85% of variations, yield potential component and drought tolerance indices (MP, GMP, STI, HARM and RDI) and the second rector justified 28.98% of total variations which would be named as “drought susceptible components (TOL and SSI indices). According to results of cluster analysis, MP, GMP, STI, HARM indices are found to be in one group, and TOL and SSI indices in the other group.  Manuscript profile
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  5 - Response of Bread Wheat Varieties to Application of Nitrogen Fertilizer under Different Irrigation Treatments
  Parisa Ghahremani Soleyman Mohammadi Hashem Hadi
  The assessment of water deficit stress and timing of nitrogen fertilizer application effects on seed yield and its components in bread wheat cultivars were carried out in a an split split plot experiment based on RCB design with three replications was carried out. Exper More

  The assessment of water deficit stress and timing of nitrogen fertilizer application effects on seed yield and its components in bread wheat cultivars were carried out in a an split split plot experiment based on RCB design with three replications was carried out. Experimental factors consisted of different levels of irrigation (full irrigation, stopping irrigation at heading and anthesis stages) that were assigned to main plots, and four levels of nitrogen fertilizer applications (F1: 20 and100 kg/ha at sowing and tillering stages respectively, F2: 20 and 100 kg/ha at sowing and booting stages respectively, F3: 20, 50 and 50 kg/ha at sowing , tillering and booting stages respectively, F4: 20 , 50 and 50 kg/ha in sowing, tillering and heading stages, respectively) to sub plots and five bread wheat cultivars (Zarrin, Pishgam, Urum, Zare and Mihan) to the sub sub plots. The results showed that mean yield of cultivars was 7.5 t/ha and it was decreased to 6.5 t/ha at stopping irrigation. The highest and lowest yield belonged to Mihan (8.1 t/ha) and Zarrin (5.7 t/ha) cultivars, respectively. Highest yield belonged to Mihan cultivar (9.4 t/ha) under full irrigation and F4 fertilizing treatments. Under deficit water stress condition at heading and flowering stages, the Mihan cultivar produced the highest yield with 8.3 and 8.6 t/ha at F3 and F4 treatments, respectively. Pishgam, Zare and Mihan cultivars responded properly to F2, F3 and F4 fertilizing treatments when irrigation stopped at heading stage, in comparison with F1 fertilizing treatment. Based on drought tolerance indices, Mihan and Pishgam identified as high performance cultivars under both stress and non-stress conditions. Manuscript profile