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.
Safoora Dehghanipoodeh; Mohammad Ali Askari; Ali Reza Talaei; Mesbah Babalar
Abstract
Apple is one of the most important fruits in temperate zones with a long post-harvest life during cold storage. A factorial experiment, in a randomized completely block design was used to investigate the preharvest application of Iron (0, 500 and 1000 mg Fe-EDDHA per tree) and nitrogen (0, 48 and 96 ...
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Apple is one of the most important fruits in temperate zones with a long post-harvest life during cold storage. A factorial experiment, in a randomized completely block design was used to investigate the preharvest application of Iron (0, 500 and 1000 mg Fe-EDDHA per tree) and nitrogen (0, 48 and 96 g ammonium nitrate per tree( on some postharvest qualitative characteristics in "Red spur" and "Granny smith" apple cultivars. Iron and nitrogen treatments in all 72 trees were applied in three stages (full bloom, 30 and 60 days after full bloom). Fruit quality parameters including colorskin color parameters (L*, a*, b*), flesh firmness, total soluble solids (TSS), Titratable acidity (TA), flavor index (TSS/TA) and total antioxidant activity were measured. According to the results, a decrease in fruit firmness, TA and increase in TSS/TA in both cultivars were observed during cold storage irrespective of treatments. The results showed that in “Red spur” cultivar, Fe application decreased fruit firmness, TSS, b* parameter values and increased TSS/TA, a* parameter values, while, N application increased TSS. Fruit firmness was decreased and TSS, TSS/TA, b* parameter values were increased by Fe application in “Granny smith” cultivar. Fruit firmness, TSS and L* parameter values were decreased and TA was increased by N application on this cultivar. In conclusion, Fe and N application in proper levels improved some postharvest qualitative characteristics in "Red spur" and "Granny smith" apple cultivars during cold storage.
Saber Avestan; Lotfali Naseri; Roghayeh Najafzadeh
Abstract
Nano-fertilizers can increase value of products in agriculture. Iron plays many important and essential roles in plant growth and development as compared to other micronutrients. In the present study, effects of different levels of enriched nano chelated Iron fertilizer (25, 50, 100, and 200 mg l-1) ...
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Nano-fertilizers can increase value of products in agriculture. Iron plays many important and essential roles in plant growth and development as compared to other micronutrients. In the present study, effects of different levels of enriched nano chelated Iron fertilizer (25, 50, 100, and 200 mg l-1) were investigated in comparison with the common Iron (FeSO4.7H2O) on in vitro proliferation of apple explants cultivar 'Gala' in the MS medium. The results showed that enrichednano chelated Iron increased growth and proliferation of apple in terms of number of nodes, shoots, and leaves, nodes and shoots length, leaf area, fresh and dry weights of shoot and chlorophyll index. The maximum growth and proliferation was observed at 100 mg l-1 of enrichednano chelated Iron, while in higher concentration (200 mg l-1), the growth was decreased due to the Iron toxicity. According to the obtained results, 100 mg l-1 of enrichednano chelated Iron can be added for increasing growth on in vitro proliferation of 'Gala' apple cultivar. The present study is the first report of the effects of enrichednano chelated Iron fertilizer on growth and in vitro proliferation of apple that can be useful for in vitro culture of the plant.of enriched nano iron chelated can be added for increasing growth on in vitro proliferation of 'Gala' apple cultivar. The present study is the first report of the effects of enriched nano chelated iron fertilizer on growth and in vitro proliferation in apple that can be useful for in vitro culture of the plant.
