Ali Hatami; Abdolhossein Abootalebi Jahromi; Abdolkarim Ejraei; Abdol Hossein Mohammadi Jahromi; Hamed Hassanzadeh Khankahdani
Abstract
Due to the calcareous nature of most soils in areas under date cultivation, this study was conducted to improve the quality and quantity of date fruits in Zahidi cultivar using the foliar applications of organic matters and micronutrients at two stages of date growth. For this purpose, an experiment ...
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Due to the calcareous nature of most soils in areas under date cultivation, this study was conducted to improve the quality and quantity of date fruits in Zahidi cultivar using the foliar applications of organic matters and micronutrients at two stages of date growth. For this purpose, an experiment was conducted to evaluate the effects of foliar applications of organic matters and micronutrients on contents and properties of biochemical compounds and minerals in Zahidi date fruit. The study was performed as a randomized complete block design with 11 treatments in three replications on 33 date palms for two consecutive years. The treatments were applied in two stages (at the beginning and end of the Kimri stage) on fruits and upper leaves. Treatments included amino acids, Aminabon 50 (0.5 and 0.1 g L-1), seaweed (0.25 and 0.5 g L-1), micronutrients (0.1 and 1.5 g L-1), and four combined treatments obtained from different concentrations of amino acids, seaweed, and micronutrients. Spraying with distilled water served as the control treatment. The results showed that the treatments had a significant effect on all studied traits. The highest content of copper was observed in response to amino acid + micronutrients (1.63 mg kg-1). The effects of amino acid + seaweed + micronutrients on the other traits were observed in the highest statistical class. In general, the latter combined treatment was the most efficient with the lowest content of soluble tannin (26.46 mg g-1) compared to the control (32.12 mg g-1) and to the other treatments.
Nafiseh Geshnizjani; Morteza Khosh-khui
Abstract
Commercially available amino acids mixtures have several advantages such as enhancing assimilation of fertilizer, facilitating uptake of water and nutrients and improving photosynthesis of plants. To investigate the response of gerbera (Gerbera jamesonni L.) flowers ‘Saltino’ to foliar application ...
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Commercially available amino acids mixtures have several advantages such as enhancing assimilation of fertilizer, facilitating uptake of water and nutrients and improving photosynthesis of plants. To investigate the response of gerbera (Gerbera jamesonni L.) flowers ‘Saltino’ to foliar application of a mixture of 19 essential amino acids (0.25, 0.50 and 0.75 mg L-1) and ammonium nitrate (200 mg L-1) as nitrogen source, a pot experiment was carried out in the research greenhouse of Eram Botanical Garden of Shiraz University. Number of flowers, flower diameter, stems length, chlorophyll, proline, protein and nitrogen contents, photosynthesis rate, stomatal conductance, and vase life of flowers were significantly improved by amino acids treatments. No significant difference was observed between ammonium nitrate and amino acids mixture for flower fresh and dry weights. Results suggested that application of amino acids mixture can induce acetyl CoA, which plays an improvingrole in physiological processes in plants. Application of amino acids mixture as a promising and sustainable approach can be recommended to promote quality and quantity of gerbera flowers.