musa Ebrahimpour; Pourang Kasraie; Hamidreza Larijani; Hamidreza Tohidi moghadam; Sahar Honarmand Jahromi
Abstract
In order to investigate the foliar application of bacterial herbicides and aqueous extracts of plants on morphological characteristics and starch of rice and barnyard grass weed, an experiment was conducted as split factorial based on a randomized complete block design cityAmol with three replications ...
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In order to investigate the foliar application of bacterial herbicides and aqueous extracts of plants on morphological characteristics and starch of rice and barnyard grass weed, an experiment was conducted as split factorial based on a randomized complete block design cityAmol with three replications in the two cropping years of 2018 and 2019. Factors included foliar application of aqueous extracts plants and surfactant of sorghum, broccoli, nettle, eucalyptus, elder-berry, Streptomyces sp-albos containing thaxtomin, Xanthomonas campestris bacteria and control as the main factor, the concentration of the extract was zero, 5, 10 and 15 per thousand as a sub factor and the plant species of rice were Tarom cultivar and barnyard grass weed as a sub-sub factor. By extracts foliar application, barnyard grass seed yield and biological yield decreased and the seed starch percent increased. Rice seed yield in the using of 5 per thousand of broccoli extract and 5 per thousand of Streptomyces sp-albos has not significantly different from the control. By increasing the concentration of the extract, seed yield and biological yield of rice and barnyard grass showed a further decreasing, the most effect was obtained in 15 per thousand extracts. In rice, biological yield in sorghum, broccoli, eucalyptus and Streptomyces sp-albos extracts were in a statistical group with control treatment. The lowest seed yield in rice at 3.16 ton/ha was related to elder-berry extract and in barnyard grass at 0.68 and 0.61 ton/ha was related to nettle and elder-berry extract. According to the obtained results,
Mohammad Nasri; zahra karimi; Meysam Oveisi; Pourang Kasraie; Hamidreza Larijani
Abstract
To investigate the effect of different levels of foliar applications of salicylic acid and jasmonic acid on biochemical characteristics and yield of Thymus vulgaris under drought stress conditions, a split factorial experiment has been performed based on randomized complete design with three replications ...
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To investigate the effect of different levels of foliar applications of salicylic acid and jasmonic acid on biochemical characteristics and yield of Thymus vulgaris under drought stress conditions, a split factorial experiment has been performed based on randomized complete design with three replications during cropping seasons of 2019-2020 in Varamin region. The main factor include irrigation levels (60 (normal) and 110 mm of evaporation from the evaporation pan (drought stress)), with the sub factors being different levels of foliar application of salicylic acid (three level: control (zero), 25, and 50 mg l-1) and jasmonic acid (three level: control (zero), one, and two mg l-1). The effect of irrigation× foliar application treatments has been significant for all studied traits at 1%. The highest plant height (38.2 cm), wet and dry weights (7112.3 and 1778.7 kg h-1), percentage of secondary metabolites (essential oil 0.28 and thymol 60.9%), and concentrations of salicylic and jasmonic acid of leaves and the lowest activity of antioxidant enzymes (SOD, CAT and GPX) of thyme are observed in normal irrigation with 50 and 2 mg -1 salicylic and jasmonic acid treatment. Thus, external use of salicylic and jasmonic acid (50 and 2 mg -1) in drought stress conditions can be considered in improving related traits of yield and increasing the production of thyme.