Hossein Bagheri; Mousa Solgi; Mina Taghizadeh; Abbas Mirzakhani
Abstract
This experiment was carried out based on a completely randomized design with three replications and two factors by applying a type of bed (manure, manure plus superabsorbents nanocamposite and vermicompost plus superabsorbents nanocamposite) and irrigation period (no stress, 5-day and 10-day) in the ...
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This experiment was carried out based on a completely randomized design with three replications and two factors by applying a type of bed (manure, manure plus superabsorbents nanocamposite and vermicompost plus superabsorbents nanocamposite) and irrigation period (no stress, 5-day and 10-day) in the farm. Shoot and root height, fresh and dry weight, chlorophyll content, root penetration depth, carbohydrate, chlorophyll, prolin, carotenoid and ion leakage cnotents were measured in this experiment. The results showed that the bed containing nanocomposite superabsorbent was significant on fresh weight, dry weight and root penetration depth. The effects of irrigation period were significant on fresh weight, dry weight, root penetration depth, chlorophyll b, chlorophyll, carbohydrate, electrolyte leakage and quality (NTEP). The quality was maintained in five-day irrigation period. The interaction between bed and the irrigation period was significant for proline and Chlorophyll which indicating the tolerance of five-day irrigation period in the bed containing superabsorbents nanocomposites.
Sepideh Keshavarz Fard; Mousa Solgi; Hossein Bagheri; Iman Shahrjerdi
Abstract
Using of humic acid and adding Biochar to soil could be used as an effective way to reduce the harmful effects of drought stress in Zinnia elegans. The effects of three factors: biochar (three levels 0, 20 and 40 g / kg of potting soil), humic acid (three levels 0, 250 and 500 mg / L, soluble) and two ...
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Using of humic acid and adding Biochar to soil could be used as an effective way to reduce the harmful effects of drought stress in Zinnia elegans. The effects of three factors: biochar (three levels 0, 20 and 40 g / kg of potting soil), humic acid (three levels 0, 250 and 500 mg / L, soluble) and two irrigation levels (50 and 100% crop capacity)was investigated in this experiment. According to the results, drought stress reduced the amount of chlorophylls, content phosphorus and potassium leaves, but increased amount carotenoids, ion leakage, proline, nitrogen and magnesium elements. The use of Biochar increases potassium and ion leakage. Humic acid reduced the content of proline in the studied plants, reducing the drought stress. The effect of Biochar and humic acid on the amount chlorophyll a and total chlorophyll, nitrogen and phosphorus were significant. The use of humic acid causes confront with drought stress and its use under drought stress conditions is recommended. The use Biochar is advisable in lack of phosphorus and nitrogen elements.
