Rahim Naseri; Amir Mirzaei; Amin Abbasi
Abstract
In order to investigate the effect of mycorrhizl fungi on dry matter remobilization of barley in dryland conditions, a field experiment has been carried out in factorial analysis based on randomized complete block design with three replications at the farm station of Sarablah Agricultural Research Cente, ...
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In order to investigate the effect of mycorrhizl fungi on dry matter remobilization of barley in dryland conditions, a field experiment has been carried out in factorial analysis based on randomized complete block design with three replications at the farm station of Sarablah Agricultural Research Cente, Ilam during 2019-2020 cropping season. Experimental factors include different barley cultivars (Mahali, Mahoor, Khoram, and Fardan) and fertilizer application is the control (without fertilizer application), 50% P chemical fertilizer, mycorrhizal fungi (Glomus mosseae, Glomus etunicatum and Rhizophagus irregularis), mycorrhizal fungi along with 50% P chemical fertilizer and 100% P chemical fertilizer. The results of this study indicate that the interaction of cultivar along with fertilizer application have had significant influence on dry matter remobilization efficiency from spike, contribution of spike reserves to grain yield, dry matter remobilization efficiency from stem, contribution of stem reserves to grain yield, current photosynthesis rate, contribution of current photosynthesis, and grain filling rate. Thus, the interaction of Fardan cultivar and mycorrhizal fungi along with 50% P chemical fertilizer has had the highest dry matter remobilization effeciency from spike, contribution of spike reserves to grain yield, current photosynthesis rate, contribution of current photosynthesis, and grain filling rate. In return, in this study the highest stem dry matter remobilization effeciency, contribution of stem reserves to grain yield, have been obtained from the interaction of Mahali cultivar along with control treatment. According to the results, in dryland conditions of the region, new cultivar of Fardan as well as mycorrhizal fungi along with 50% P chemical fertilizer can be recommended.
Samaneh Asadisanam; Mohsen Zavareh; Hematolah Pirdashti; Fatemeh Sefidkon; Ghorban Ali Nemat Zadeh
Abstract
Purple conefloweras top-selling medicinal plant is widely used in Europe and North America for the treatment of common cold. This experiment was conducted as a randomized complete block design in split plot arrangement with three replications in Research Farm of Genetics and Agricultural Biotechnology ...
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Purple conefloweras top-selling medicinal plant is widely used in Europe and North America for the treatment of common cold. This experiment was conducted as a randomized complete block design in split plot arrangement with three replications in Research Farm of Genetics and Agricultural Biotechnology Institute of Tabarestan in 2012-13. Experimental treatments included three transplanting dates (April 9, May 9 and June 8, 2013), and three plant population densities (7, 10 and 16 plant/m2) which considered as main and subplots, respectively. Results showed a relative compensatory effect of higher population density until 10 plants/m2, however, delayed planting resulted to decrease in total shoot, leaf (L) and stem (S) dry weights. It represents that the highest flower (F) dry weight (27.1 g/plant) was related to planting on May 9 with 10 plant/m2 density. Ratio of L/shoot was greater than S/Shoot than F/shoot dry weight. The highest (L+F)/Shoot ratio was related to the April and May planting dates while the highest S/Shoot ratio was related June’s planting date. Maximum total phenol content of leaves (51.1 mg of GAE/ g dry matter) and stems (35.9 mg of GAE/ g dry matter) were measured in plants cultivated on April 9 with a density of 10 plant/m2. The highest total phenolic content of flowers (56.5 mg of GAE/ g dry matter) was determined in plants cultivated on May 9 with a density of 10 plant/m2. Total phenol of flowers was greater in leaves than stems. Overall, it could be concluded that early planting of purple coneflower on April 9 with 10 plant/m2 density was suitable for leaf and stem dry weight and total phenol production, while the delayed planting until May 9 with a population density of 10 plant/m2 was favorite for flower as production of dry weight and total phenol, according to the experiment conditions
Majid Jafaraghaei; Amir hooshang Jalali
Abstract
To investigate the effect of water treatment and plant density on yield and yield components of two cotton cultivar, a two-year experiment (2006-2007) was carried out in Esfahan Agricultural Research Center. The use of a split plot factorial based on complete block with four replications for study. Two ...
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To investigate the effect of water treatment and plant density on yield and yield components of two cotton cultivar, a two-year experiment (2006-2007) was carried out in Esfahan Agricultural Research Center. The use of a split plot factorial based on complete block with four replications for study. Two irrigation levels 135 (I1) and 180 (I2) mm of cumulative pan evaporation Class A, from flowering stage to the end of growth were assigned as main plots and treatment combination of two varieties of Mehr and Oltan of cotton and plant spacing 12, 15 and 18 cm (respectively, 120.95 and 80 thousand plants ha-1) were assigned made up as subplots. The results showed that both cultivars Mehr and Oltan in the density of 95 thousand plants per hectare in I1 irrigation treatments, respectively, with 2805 and 2745 kg ha-1 of yields produced the highest levels of yield compared to other treatments. In the I2 irrigation treatment and 95 thousand plants ha-1 density, Oltan cultivars producing 2119 kg ha-1, and had lowest yield compared to other treatments. In both cultivars in 95 thousand plants ha-1, between the two treatments of irrigation levels, no significant differences in terms of leaf dry weight. The results showed that irrigation after flowering phase until the end of growth, based on 135 mm evaporation basin A and the density of 95 thousand plants ha-1 can be proposed, for both cultivars studied.