A. Avishi; H. Feizi; M. Dashti
Abstract
To evaluate seed vigor of marigold affected as organic, biological, nano and chemical fertilizers on mother plant, a study was conducted in Research Center and Education of Agricultural and Natural Resources of Khorasan Razavi province. Plants were under the impact of 10 fertilizer treatments contains ...
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To evaluate seed vigor of marigold affected as organic, biological, nano and chemical fertilizers on mother plant, a study was conducted in Research Center and Education of Agricultural and Natural Resources of Khorasan Razavi province. Plants were under the impact of 10 fertilizer treatments contains Compost (15 ton/ha), Vermicompost (5 ton/ha), cow manure (15 ton/ha), Compost with Pseudomonas putida, Vermi compost with Pseudomonas putida, Nanobiologic fertilizer (1.5 L/ha), Nano chalate ZFM (2 kg/1000 L), Nano composit Bioorganic (200 kg/ha), Chemical fertilizer (150N,50P,50K) and control. The experiment was conducted in a completely randomized design with 10 treatment with three replications. . Then traits such as percentage and speed of germination, mean germination time, seedling length, seed vigor index and seedling dry weight were measured. The results showed that fertilizer treatments had significant effects on germination percentage, germination rate, mean germination time, seedling length and vigor index of Calendula officinalis seeds but had not on seedling dry weight. The highest seed germination was found in compost treatment that was 94% (24.5% increment) and the lowest was seen in control treatment (76%). The highest germination rate was seen in compost treatment (6.05) and the lowest was in control (2.54). Application of compost in comparison to control showed 46.06% reduction in mean germination time. Also using compost had the greatest germination rate in compared to control (more than 138%). Overall compost treatment showed the best performance on the seed and seedling traits of marigold.
V. Mansouri Gandomani; H. Omidi
Abstract
The experiment was conducted to examine the effects of nano-particle silicon dioxide to improve germination of deteriorated soybean seeds (Williams). The experiment was done as factorial in a completely randomized design with three replications in 2015 in Seed Technology Laboratory in the University ...
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The experiment was conducted to examine the effects of nano-particle silicon dioxide to improve germination of deteriorated soybean seeds (Williams). The experiment was done as factorial in a completely randomized design with three replications in 2015 in Seed Technology Laboratory in the University of Shahed. The first factor involves different levels of accelerated aging including control and accelerated aging for 24 and 48 hours at 41 ° C in high humidity conditions and different concentrations of nano-silica as the second factor including zero (control), 40 and 60 ppm, respectively. The traits such as germination percentage, germination rate, the average duration of germination, the number of normal seedlings, seedling fresh weight, root to shoot ratio, relative water content of root, seedling length and chlorophyll content were measured. The results showed that the effect of nano-silica pre-treated soybean seed germination was significant on all traits. But the interaction of nano-silica priming and the deteriorated seeds of soybean was significant only in some germination characteristics. Pre-treatment of 60 ppm nano-particle silica increased 20% of deteriorated seeds germination rate and reduced the average time of germination. Pre-treatment of 40 ppm increased about 7-10% of the number of normal seedlings, and also treatment of silica nanoparticles improved seed germination with compensate amount of chlorophyll in deteriorated seeds.
