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.
Abdollah Khadivi-Khub
Abstract
This investigation was carried out in a commercial orchard in Ashtian city, Markazi province. The effect of N-phenyl-phthalamic acid and nutrition on fruit quantity and quality of plum cv. Maragheh was studied with the aim of increasing yield. The N-phenyl-phthalamic treatments (concentrations, 0, 500 ...
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This investigation was carried out in a commercial orchard in Ashtian city, Markazi province. The effect of N-phenyl-phthalamic acid and nutrition on fruit quantity and quality of plum cv. Maragheh was studied with the aim of increasing yield. The N-phenyl-phthalamic treatments (concentrations, 0, 500 and 1000 mg/l) were performed at full bloom (80 % flowering) on 29 March. Also, nutrition was conducted on 18 May using perfect liquid fertilizer (Plant Green). As a result of this process, the yield amount was increased, when N-phenyl-phthalamic acid 500 and 1000 mg/l treatment were used without fertilization comparison to control. But fruit quality parameters (weight, length, and width) were decreased in comparison to control. However, treatments N-phenyl-phthalamic acid 500 and 1000 mg/l with fertilization not only increased fruit setting but also increased fruit quality characters (weight, length, and width). According to the present results, N-phenyl-phthalamic acid (500-1000 mg/l) along nutrition can be used for the improvement of fruit quantity and quality of plum.
Asghar Ramezanian; Seyyed Hossein Mirdehghan; Najmeh Roshanzamir
Abstract
In this research the effect of preharvest application of salicylic acid and methyl jasmonate on vase life and some qualitative and quantitative characteristics of cut rose flowers cvs. ‘Sweet Water’ and ‘Dolsevita’ was investigated. Salicylic acid at 0.01, 0.05 and 0.1 mM and ...
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In this research the effect of preharvest application of salicylic acid and methyl jasmonate on vase life and some qualitative and quantitative characteristics of cut rose flowers cvs. ‘Sweet Water’ and ‘Dolsevita’ was investigated. Salicylic acid at 0.01, 0.05 and 0.1 mM and methyl jasmonate at 0.1 and 0.2 mM foliar sprayed and distilled water used as control. This experiment was carried out using CRD with four replications. Harvested flowers kept at 3±1°C and 70-80% RH. Results showed that methyl jasmonate at 0.2 and salicylic acid at 0.1 mM on ‘Sweet Water’ and methyl jasmonate at 0.1 mM on ‘Dolsevita’ increased vase life with delay in senescence related processes through increase in solution uptake, increase in relative fresh weight, maintenance of plant membrane stability and stem total carbohydrate. Also, ‘Sweet Water’ with average of 40.56 days compared with ‘Dolsevita’ with average of 27.74 days increased the vase life. Overall, preharvest spray of roses with methyl jasmonate and salicylic acid as a method to increase postharvest quality and maintenance of cut roses is recommendable.
Seyed MohammadReza Ehteshami; Iman Janzamin; Mahdi Ramezani; Kazem Khavazi; Behnam Zand
Abstract
In order to investigate the role of Bacillus cogulans on yield of two forage corn cultivars, an experiment carried out at Agricultural Research Center of Tehran Province during 2009-2010. The experiment design consisted of three randomized complete blocks in a factorial arrangement. Investigated treatments ...
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In order to investigate the role of Bacillus cogulans on yield of two forage corn cultivars, an experiment carried out at Agricultural Research Center of Tehran Province during 2009-2010. The experiment design consisted of three randomized complete blocks in a factorial arrangement. Investigated treatments consisted of the kind of phosphorus and cultivar. The phosphorus factor included of the application of triple super phosphate fertilizer and without seed inoculation, without fertilizer and without seed inoculation (control), seed inoculation and 100% P recommended, seed inoculation and 75% P recommended, seed inoculation and 50% P recommended, seed inoculation without fertilizer and cultivar factor included of S. C. 704 and 647. The application of 75% fertilizer and seed inoculation had the highest amount in the most of investigated characteristics. As regards forage quality, seed inoculation with %75 fertilizer showed the highest dry matter digestibility, crude protein and Water Soluble Carbohydrates, too. The present finding showed that phosphate-solubilizing microorganisms can improve crop yield.
Azizollah Kheiry; Ahmad Khalighi; Younes Mostofi; Rohangiz Naderi
Volume 13, Issue 1 , August 2011, , Pages 9-20
Abstract
Tuberose is one of the most important floral crops in Iran. Long spikes of fragrant flowers make it excellent for cut flower. Due to the beauty and sweet fragrance of flowers, it used in all seasons for flower arrangements. Production of high quality flowers and vase life extension is important for competition ...
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Tuberose is one of the most important floral crops in Iran. Long spikes of fragrant flowers make it excellent for cut flower. Due to the beauty and sweet fragrance of flowers, it used in all seasons for flower arrangements. Production of high quality flowers and vase life extension is important for competition in world markets. For this reason this research was conducted on Polianthes tuberosa var Double base on factorial experiment in RCB (randomized complete block design) with three replications. Both gibberellic acid (GA3) and benzyl adenine (BA) were sprayed on bulbs and foliage of plants at four concentration levels. Results showed that gibberellic acid and benzyl adenine treatments had significant differences in all of the measured indices at one percent level. Gibberellic acid increased stem and rachis length in some concentrations and also accelerated flower stalk emerge. Benzyl adenine increased stem diameter, floret numbers and vase life and preceded flowering. Both of these plant growth regulators improved water uptake by cut flowers and increased diameter of second floret but decreased ethylene production of the flowers. Essential oils of flowers were extracted by solvent extraction method. Both of the plant growth regulators had negative effects on essential oils of flowers, but in 1000 mg.l-1 of BA essential oils of flowers were higher than other concentrations.