Roya Mousavi; Vida Chalavi; Kamran Ghasemi; Mehdi Hadadinejad
Abstract
Objective: Considering the abundant use of chemical fertilizers in agriculture and their detriments to the environment, it is necessary to consider alternatives to prevent possible damage.Methods: A completely randomized factorial experiment with four replications was conducted in the Nur country to ...
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Objective: Considering the abundant use of chemical fertilizers in agriculture and their detriments to the environment, it is necessary to consider alternatives to prevent possible damage.Methods: A completely randomized factorial experiment with four replications was conducted in the Nur country to investigate the imapct of nitroxin and vermicompost on the qualitative and functional characteristics of Blackberry. The first factor was the percentage of vermicompost at five levels (0, 10, 20, 30 and 40% by volume) and the second factor consisted of inoculation and lack of inoculation with nitroxin (Ni).Results: The results demonstrated that the highest fruit weight, number of fruits, and yield were observed at 20% vermicompost. Maximum fruit length (1.62 cm) was obtained with 10% vermicompost and nitroxin inoculation. In analyzing the biochemical traits, the highest soluble solids and taste index were observed in the 10% vermicompost treatment. The largest amount of anthocyanin was obtained in the 20 and 30% vermicompost treatments at 551 and 563 (mg/L fruit juice), respectively. The application of nitroxin along with 30% vermicompost yielded the highest amount of vitamin C among all treatments.Conclusion: The application of vermicompost at 20 to 30% levels had the best impact on the quantitative and qualitative traits of Blackberry, and in cases where high amounts of vermicompost exerted a negative effect on some traits, nitroxin was able to reduce this effect and enhance certain traits. In this assay, the application of vermicompost at 20-30% along with nitroxin demonstrated the best impacts on blackberry traits.
Fereshteh Kamiab; Mohamad Abedini; Masoud Khezri
Abstract
Generally, fruit trees should produce sufficient yield annually through their economic life. Fruit trees usually produce flowers over their ability of productivity. If all of the flowers are converted to fruit, the tree will be weak and poor smaller fruit will be produced and it may cause alternate bearing. ...
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Generally, fruit trees should produce sufficient yield annually through their economic life. Fruit trees usually produce flowers over their ability of productivity. If all of the flowers are converted to fruit, the tree will be weak and poor smaller fruit will be produced and it may cause alternate bearing. Thus some flowers must be removed by hand, mechanically or chemically. In this study, the effects of hand thinning (10, 20 and 40 percent cluster elimination) and foliar treatment of Naphthalene Acetic Acid (5, 10, 20 and 40 mg/l) and ethephon (25, 50, 100 and 200 mg/l) on fruit thinning rate and on some quantitative and qualitative characters of seedless barberry fruit were investigated as a completely randomized block design in research garden of Birjand University in 2014. The results indicated that Naphthalene acetic acid and Ethephon application caused effective fruit thinning. The highest rate of thinning was observed in Naphthalene acetic acid (10 mg/l) and ethephon (50 mg/l) treatments. These treatments also increased the yield rate in comparison to control. Hand thinning, Naphthalene Acetic Acid and Ethephon application increased the length, diameter and volume of fruit, fresh weight (100 berry), dry weight (100 berry), anthocyanins, ascorbic acid, total soluble solids, total soluble solids to acid ratio. Thus both chemical treatments are suitable and ethephon (50 mg/l) is the best treatment.