Saeed Sadeghzadeh Hemayati; Vodod Saidnia; Ghasem Parmoon
Abstract
This study was conducted to investigate the role of application of sulfur and zinc on commercial seed yield of sugar beet Monogerm cultivar in a factorial experiment based on randomized complete block design with three replications. The experimental treatments included sulfur (0, 200, and 400 kg/ha) ...
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This study was conducted to investigate the role of application of sulfur and zinc on commercial seed yield of sugar beet Monogerm cultivar in a factorial experiment based on randomized complete block design with three replications. The experimental treatments included sulfur (0, 200, and 400 kg/ha) and zinc (0, 20, and 40 kg/ha). The results showed that the seed yield and commercial seed yield, as well as the interaction effect of sulfur and zinc, has a significant impact on seed yield alone. With the application of 400 kg/ha sulfur, the raw seed yield increased by 17% and the commercial seed yield increased by 54%. The highest raw seed yield (3443 kg/ha) was obtained with the application of 400 kg/ha of sulfur and 40 kg/ha of zinc. The simultaneous application of sulfur and zinc led to an increase in the proportion of oversized seeds and standard seeds, and a decrease in the proportion of undersized seeds. The highest percentage of oversized seeds was obtained with the application of 400 kg/ha of sulfur and 20 kg/ha of zinc, The application of 400 kg/ha of sulfur resulted in a 12% and 6% increase in mechanical and p sulfur improved both the quantitative and qualitative aspects of sugar beet seed production, while zinc did not have much influence and only increased the quantity of seed produced. Under the conditions of this study, the combination of 400 kg/ha of sulfur and 40 kg/ha of zinc was recommended.
Saeed Sadeghzadeh Hemayati; Reza Shariari; Ali Saremirad
Abstract
Suitable germination and crops establishment are one of the most significant and fundamental issues that overshadow the economic performance of the product. Improving the quality of seeds by relying on their pre-treatment is one of the issues that can be considered. Accordingly, the present study was ...
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Suitable germination and crops establishment are one of the most significant and fundamental issues that overshadow the economic performance of the product. Improving the quality of seeds by relying on their pre-treatment is one of the issues that can be considered. Accordingly, the present study was performed to investigate the effect of pretreatment of sugar beet seeds using humic in factorial experiment in 2017. The first factor was humic acid including four levels of zero, 8.33, 12.50, and 25.00 mg per 100 g of seed, and the second factor, cultivar included two levels of Ekbatan and Paya. According to the results of the analysis of variance, the main effects of humic acid and cultivar had a significant effect on all evaluated characteristics except root dry weight at one and five percent probability levels. Humic acid-cultivar interaction was significant only for the three characteristics of mean germination time, root dry weight, and shoot dry weight. Based on the mean comparison results, the seed vigor (87.87%), germination rate (6.27 bud/day), seedling vigor length index (3.52) and seedling vigor weight index (1269.96) were assigned to seed pretreatment using 12.50 mg of humic acid per 100 grams of seeds. Seed pretreatment without significant difference in the amount of coating material increased the uniformity of seed germination. Among the two studied cultivars, the Ekbatan cultivar was superior to the Paya cultivar in terms of all studied characteristics. In general, the use of humic acid improved the germination characteristics and early growth of seedlings.
Dariush Taleghani; Saeid Sadeghzadeh Hemayati; Farahnaz Hamdi Holasoo; Mehdi Sadeghi-shoae
Abstract
The use of various types of polymers in the field of seed processing (coating seeds of various types of plants) has become very important in recent years. Polymer materials are used to add a mixture of fungicides and pesticides and growth regulators to help protect plant seedlings from growing and deploying ...
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The use of various types of polymers in the field of seed processing (coating seeds of various types of plants) has become very important in recent years. Polymer materials are used to add a mixture of fungicides and pesticides and growth regulators to help protect plant seedlings from growing and deploying better against pathogens and harmful insects in the early stages of plant growth. This research was carried out with the aim of making internal polymer and its feasibility study in seed of three sugar beet, corn and alfalfa crops during the years of 2014-2015. In order to compare the effect of foreign and internal polymer, seed quality, germination, abnormality percentage, Radicle length in laboratory and Seed vigor in greenhouse were evaluated. The results of the obtained spectra and surface tension the comparison of the polymer prepared with the foreign polymer used as a control. It can be concluded that the internalized polymer is physically and mechanically similar to that of an external polymer. Application of polymer in sugar beet cover had no adverse effect on germination and seed establishment. The results of this study showed that the synthesized internal polymer in this study can be used to coating the seeds of sugar beet and alfalfa and 1% and 1.5% for corn seeds in order to achieve optimum seed coating and not to have an adverse effect on their qualitative traits.
