فهرست مقالات cultivation method

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  1 - The physiological and biochemical responses of directly seeded and transplanted maize (Zea mays L.) supplied with plant growth-promoting rhizobacteria (PGPR) under water stress
  Saeed Rezazadeh Mohammadnabi ilkaee Fayaz Aghayari Farzad Paknejad Mehdi Rezaee
  10.30495/ijpp.2019.670787
  The purpose of the present study was to investigate the effect of plant growth-promoting rhizobacteria(PGPR) on physiological and biochemical properties of maize (Zea mays L.) in different cultivation methods under water stress. The experiment was carried out as split-p چکیده کامل

  The purpose of the present study was to investigate the effect of plant growth-promoting rhizobacteria(PGPR) on physiological and biochemical properties of maize (Zea mays L.) in different cultivation methods under water stress. The experiment was carried out as split-plot design including water stress (well-watered, mild stress, and severe stress) as main plot and also cultivation (transplanting and direct seeding) and PGPR application (uninoculated and inoculated with Pseudomonas putida) as subplots.Water stress decreased biological and kernel yield. In direct seeding and no Pseudomonas application, severe stress decreased the kernel yield by 37% compared to the well-watered condition. Water stress resulted in significant reduction of chlorophyll content. However, it was increased by Pseudomonas application. In transplanting plants, well-watered and Pseudomonas application increased the chl. a+b by 41% in comparison with severe stress and no Pseudomonas application. Catalase (CAT) and superoxide dismutase (SOD) activities were gradually raised by increasing the water stress. In transplanted plants inoculated with Pseudomonas, severe stress decreased relative water content (RWC) by 23% compared to well-watered plants. In transplanted plants inoculated with Pseudomonas, severe stress increased Malondialdehyde (MAD) by 46% compared to well-watered plants. Total phenolic content (TPC) and total flavonoid content (TFC) increased by mild water stress and decreased by severe water stress. In directly seeded plants inoculated with Pseudomonas, mild water stress increased TPC by 11% compared to well-watered condition. Compared to well-watered treatment, 54% increases were observed in TFC by mild stress in transplanted plants treated with Pseudomonas. Transplanting and Pseudomonas was concluded to alleviate the adverse effects of water stress on physiological and biochemical traits of maize. پرونده مقاله
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  2 - Effects of Sowing Season and Cultivation Methods on Seedling Emergence, Survivor Rate and Growth of Astragalus flexilepes L. in Rangelands of Kermanshah Province, Iran
  Khosrw Shahbazi Mohhamad Fayaz
  One of the fundamental difficulties in Iranian rangelands is the existence of wide area of poor condition rangelands that their grazing capability is low due to continuous livestock grazing pressure. Astragalus flexilipes is one of the palatable plant species of rangela چکیده کامل

  One of the fundamental difficulties in Iranian rangelands is the existence of wide area of poor condition rangelands that their grazing capability is low due to continuous livestock grazing pressure. Astragalus flexilipes is one of the palatable plant species of rangelands in Iran, while its distribution is being decreased due to improper grazing. The aim of this study was to evaluation the sowing season and cultivation methods of Astragalus flexilipes in dryland farming using split plot design based on completely randomized block with three replications in Meleh-Kabud, Gahvareh, Kermanshah, Iran over two years of 2016-17. The first factor was sowing seasons (spring and autumn) and the second one was cultivation methods (row sowing and scatter sowing). Data were collected for seedling emergence, survivor rate and growth condition in the second year. Result showed significant effect of cultivation method on seedling emergence and survival rate and significant effect of sowing date on growth condition (P<0.01). The sowing date by cultivation method interaction was significant for seedling emergence and survival rate (p<0.05). The highest values of the latter traits were obtained in spring season coupled with row cultivation method. In autumn sowing the highest growth scores of 3.74 and 3.15 (out of 5) for row sowing and scatter sowing, respectively. It was concluded that the highest establishment was achieved in spring cultivation, but the vigorous plants was observed in the autumn cultivation. Thus, early spring cultivation of Astragalus flexilipes using row-sowing method was recommended for rehabilitation of the poor condition rangeland in similar climate area having relatively lower temperature. پرونده مقاله