Babak Peikarestan; Mehrdad Yarnia; Hamid Madani; Hossein Heidari Sharif Abad
Abstract
This experiment was carried out on the effect of deficit irrigation and zinc foliar application on chase and challenger sweet corn hybrids in Arak, Islamic Azad University, Agriculture Research Station as a split-plot factorial experiment based on randomized complete block design with three replications ...
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This experiment was carried out on the effect of deficit irrigation and zinc foliar application on chase and challenger sweet corn hybrids in Arak, Islamic Azad University, Agriculture Research Station as a split-plot factorial experiment based on randomized complete block design with three replications during 2014 and 2015. Different levels of water irrigation included full irrigation (control), every furrow irrigation and alternative furrow irrigation were measured assigned to main plot and foliar treatment included non-application of zinc (water sprayed (control), application of drop zinc sulfate (2/1000 lit. ha-1) and fast zinc sulfate (2/1000 lit. ha-1) and two sweet and super sweet corn hybrids by factors in sub plot. Results showed that irrigation patterns, application of the zinc and hybrids and their interaction were significant at 1% of probability in grain yield, grain protein, grain oil content, grain moisture content and proline content in leaves. The highest leaf proline content was observed in every furrow irrigation by 30.21 mg/g which it had 39.86% significant difference with full irrgiation by 21.60 mg/g. The highest grain content was observed in zinc fast foliar application by 28.50 mg/g, while in none zinc spray (control), this amount was reduced to 18.09 mg/g by 57.54% reducing. According to research, alternative irrigation and fast zinc spray on Challenger hybrid is recommendable in deficit water conditions.
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.
Salman Dastan; Ghorban Noormohamadi; Hamid Madani
Abstract
To evaluate of rice genotypes in various modified systems, an experiment was carried out as split plot in randomized complete blocks design with four replications at Neka region, Mazandaran province, Iran in 2011-2012. Cropping systems were chosen as main plots including conventional, improved and System ...
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To evaluate of rice genotypes in various modified systems, an experiment was carried out as split plot in randomized complete blocks design with four replications at Neka region, Mazandaran province, Iran in 2011-2012. Cropping systems were chosen as main plots including conventional, improved and System of Rice Intensification (SRI) and genotypes as sub plots including: Sang Tarom, Hashemi Tarom, Neda and Shiroodi. The results indicated that the most number of fertile tiller per hill, number of spikelet per square meter (374.8 number) and number of filled spikelet percentage per panicle was produced in SRI that has led to the most paddy yield (6412 kg/ha). The most number of filled spikelet per panicle and filled spikelet percentage per panicle was obtained for cv. Tarom Hashemi. But, number of panicle per square meter (396.8) was the highest in cv. Neda. The maximum paddy yields were 7272 and 7315 kg/ha for cv. Neda and Shiroodi. The highest paddy yield was 7770 kg/ha that produced using SRI and cv. Neda. Paddy yield in SRI was 5.44 and 12.65 percentage more than improved and conventional systems, respectively. Therefore, SRI was a cropping system that with creating optimum management practices had led to increase of paddy yield and yield components of rice.