Ayoub Jafari; MohammadReza Bihamta; Masoumeh Moghbel; Saeid Soufizadeh; Saeed Bazgeer; Mostafa Karimi
Abstract
Objective: To evaluate the effect of planting date on the morphological traits, growth indices and seed corn yield of three varieties, an experiment was carried out in the research farm of University of Tehran in Karaj city in 2019.
Methods: The experiment was conducted as a split-plot design based ...
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Objective: To evaluate the effect of planting date on the morphological traits, growth indices and seed corn yield of three varieties, an experiment was carried out in the research farm of University of Tehran in Karaj city in 2019.
Methods: The experiment was conducted as a split-plot design based on randomized complete blocks with four replications. In this experiment, planting date in 3 levels (May 24, June 21, and July 18) was considered as main plots and variety (early KSC400, medium-early KSC647, and late KSC704) as sub plots.
Results: The results showed the highest yield is related to the second planting date (11.98 ton/Kg-1), and the longest period until the appearance of the the tassel was belonged to the first planting date (63.7 days).
The third (129/7 days), the second (122/3 days) and first planting date (113/3 days) had the longest period of physiological maturity, respectively. Also, KSC704 had the highest plant height and stem diameter, and KSC647 had the highest number of leaves. Also, the maximum leaf area, the growth rate of crop in the flowering stage was related to the cultivar KSC704 on the second and third planting date, respectively, and the maximum relative growth rate and the net absorption rate in the first vegetative stages were related to the cultivar KSC704 on the third planting date and the second planting date.
Conclusion: Overall, the second planting date and KSC704 variety are suggested as the suitable date and variety for Karaj city.
Ali Mansouri; Heshmat Omidi; Amir Bostani
Abstract
In order to investigate the possibility of reducing the growth period and increasing the grain yield of different quinoa genotypes, in 2018, a factorial split plot experiment was conducted in a randomized complete block design with three replications in the research farm of Shahed University. The main ...
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In order to investigate the possibility of reducing the growth period and increasing the grain yield of different quinoa genotypes, in 2018, a factorial split plot experiment was conducted in a randomized complete block design with three replications in the research farm of Shahed University. The main factor included three different genotypes of quinoa (Titicaca, Giza 1 and Sajama) and the secondary factors included three models of planting methods (Transplanting, seed Priming with 1000 ppm Boric acid solution, and direct sowing) and boron foliar application at two levels (control and foliar application with 1000 ppm Boric acid solution). The results showed that the effect of genotype was significant on all studied traits. The highest plant height (123.38 cm) and grain yield (2860.228 kg/ha) were obtained in Giza 1 genotype. Also, the shortest period of growth and flowering was related to Titicaca genotype and the longest period was related to Sajama genotype. The effect of planting method on quinoa growth and yield traits was significant and transplanting was more effective than other methods. This method increased the plant height by 48.15% and grain yield by 176.69%, reduced the flowering (34.35%) and ripening period (37.97%). The priming was also able to improve the studied traits compared to the control. Of course, its effectiveness was not as high as transplanting. The effect of boron foliar application on grain yield was significant and increased this trait by 16.7%.