Hossein Noroozi; Majid Nabipour; Afraseyab Rahnama Ghahfarokhi; Habibola Roshanfekr
Abstract
In order to investigation the effect of planting date and foliar application Zinc sulfate and Selenium on tolerance to high temperature on two Wheat cultivars one experiment was carried out in a split factorial experiment based on a complete randomized block design with three replications at the experimental ...
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In order to investigation the effect of planting date and foliar application Zinc sulfate and Selenium on tolerance to high temperature on two Wheat cultivars one experiment was carried out in a split factorial experiment based on a complete randomized block design with three replications at the experimental farm of Shahid Chamran University of Ahvaz during a growing season 2017-2018. Three factors were investigated in this experiment. initial factor including three planting date (Nov 11, Des 11, Jan 10). The solution type was used as the second factor: 1- foliar application with tap water (control), 2- foliar application with selenium (4 mg/lit), 3- foliar application with zinc sulfate (0.04%) and third factor including two wheat cultivars (Chamran and Star). According to the results in planting date of 20 January, the number of grains per spike decreased in the foliar application treatments by zinc solfate 10%, Selenium 36% and control 33% compared to similar treatments in the planting date of November 20th. In the planting date of January 20, the decrease in grain yield compared to the planting date of November 20th was 49.3% in the control treatment and 49.9% in the selenium treatment While in zinc sulfate treatment, yield reduction was 20.19%. According to the results obtained in folia application, Zn sulfate increased grain yield in two wheat cultivars by increasing the number of grains per spike, 1000- grain weight and grain filling duration.
Hossein Sadeghi; Hossein Heidari sharifabad; Aidin Hamidi; Ghorban Nourmohammadi; Hamid Madani
Abstract
In order to study the canopy temperature effect on protein and soluble sugar, oil percentage and yield of soybean in different planting dates, an experiment was conducted as factorial based on Randomized Complete Block Design with three replications in Karaj and Moghan areas during 2012-13. The studied ...
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In order to study the canopy temperature effect on protein and soluble sugar, oil percentage and yield of soybean in different planting dates, an experiment was conducted as factorial based on Randomized Complete Block Design with three replications in Karaj and Moghan areas during 2012-13. The studied treatments were included cultivar (‘Williams’ and ‘L17’) and planting date (5th of May, 5th of June and 5th of July). Results showed that the soluble protein content was not affected by studied factors. The highest oil percentage (22.38%) in both areas was related to first planting date, also second and third planting dates with 18.8 and 17.72% respectively were arranged in the next levels. In Karaj area, the maximum rate of soluble sugar (73.17 mg/g grain) was obtained at third planting date but in Moghan area, it (72.12 mg/g grain) was observed at second planting date. Furthermore the highest yield (3679 kg/ha) was attained at second planting date in both areas while also third and first planting dates with 3160 and 3000 kg/ha were putted in the next levels. Results showed that although the oil percentage at 5th of May planting date was higher than the other planting dates, but the rate of yield and soluble sugar were decreased at this planting date, because of encountering the pod set and grain filling stages with higher temperature. So, in order to prohibition of this problem occurrence, it is suggested that soybean doesn’t plant in May and it be postponed until the mid of June.