Roya Mousavi; Vida Chalavi; Kamran Ghasemi; Mehdi Hadadinejad
Abstract
To investigate the effect of nitroxin and vermicompost on the qualitative and functional characteristics of blackberry, a factorial experiment was conducted in a completely randomized design with four replications in pots. The first factor was the percentage of vermicompost at five levels (0, 10, 20, ...
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To investigate the effect of nitroxin and vermicompost on the qualitative and functional characteristics of blackberry, a factorial experiment was conducted in a completely randomized design with four replications in pots. The first factor was the percentage of vermicompost at five levels (0, 10, 20, 30 and 40) and the second factor was the level of inoculation and non-inoculation with nitroxin (Ni). The results showed that the treatments had a significant effect on the studied traits. The highest fruit weight, number of fruits, and yield was observed in 20% vermicompost. Maximum fruit length (1.62 cm) obtained in 10% vermicompost and nitroxin inoculation. The highest fruit diameter was obtained in 30% vermicompost. Also, in biochemical parameters, the application of 10% vermicompost produced the most soluble solids and flavor index. The highest amount of anthocyanin at 551 and 563 (mg/L fruit juice) was obtained respectably in 20 and 30% vermicompost treatments. Application of nitroxin along with vermicompost yielded 30% of the most vitamin C. In general, the results showed that the application of vermicompost at levels of 20 to 30% has the best effect on the quantitative and qualitative traits of blackberry and nitroxin can reduce the negative effect of high vermicompost and increase the effect of vermicompost on the blackberry plant.
Mohammad Ali Shiri; Malek Ghasemi
Abstract
Objective: The objective of this study is to evaluate the effect of different methods of complementary pollination on the qualitative characteristics of kiwifruit cv. Hayward in order to introduce the most effective and practical complementary pollination method.
Methods: The present study evaluated ...
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Objective: The objective of this study is to evaluate the effect of different methods of complementary pollination on the qualitative characteristics of kiwifruit cv. Hayward in order to introduce the most effective and practical complementary pollination method.
Methods: The present study evaluated the effect of different methods of complementary pollination [open pollination, hand pollination from male flowers of the tumor cultivar, spray pollination with pure pollen and spray pollination with impure pollen (collected from the entrance of bees' nests at the time of opening kiwifruit male flowers) on the qualitative characteristics of kiwifruit cv. Hayward in the Citrus and Subtropical Fruits Research Institute (Ramsar city) in 2021 based on the randomized complete block design in three replications.
Results: The results showed that the amount of titratable acids, maturity index, chlorophyll b, carotenoid, total flavonoid and antioxidant activity were not affected by different methods of complementary pollination. Fruits obtained from spray pollination with impure pollen had the highest single tree yield (98.32 kg per tree), hectare yield (40.39 tons per hectare), number of seeds (1038), amount of soluble solids (7.07 °Brix), chlorophyll a (1.71 mg100 g-1 FW), total chlorophyll (3.11 mg100 g-1 FW), vitamin C (60.27 mg100 g-1 FW), and total fruit phenol (79.62 mg100 g-1 FW). Moreover, these fruits were in more favorable conditions regarding sensory and taste evaluations.
Conclusion: Overall, it is possible to recommend complementary pollination according to spray pollination with impure pollen as the most effective and practical method to increase fruit quality for kiwifruit growers.
sayyed-pooya hosseini; soudabeh golestani kermani; kourosh qaderi; nasrin sayari
Abstract
Due to scarcity of water resources, its negative effects on agricultural yield, and the need to ensure food security, it is necessary to provide effective strategies to improve management and water productivity in this sector. Accordingly, the present experiment has been carried out as a factorial based ...
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Due to scarcity of water resources, its negative effects on agricultural yield, and the need to ensure food security, it is necessary to provide effective strategies to improve management and water productivity in this sector. Accordingly, the present experiment has been carried out as a factorial based on completely randomized design during spring of 2019 in the research greenhouse of Shahid Bahonar University of Kerman. The research factors include 3 irrigation levels Fc100, Fc75, and Fc50 (100%, 75%, and 50% field capacity) as the first factor and two superabsorbent levels S0 and S5 (0 and 5 gr/kg soil) as the second factor, performed with five replications. The results show that the maximum yield (40. 23 ton/ ha) and water productivity (10.36 kg/) belong to FC100S5 treatment, increasing by 5.71% and 47.6%, respectively, compared to the values recorded in similar level of irrigation and non-superabsorbent polymer. The maximum value of total chlorophyll (25.12 mg/ml) are observed in FC100S5 treatment, which in turn increase by 19.44%, compared to the control. The maximum value of vitamin c occurs in FC100S0 treatment, being 18.27% higher than minimum recorded value. Finally, the results show that the difference between irrigation water production of cherry tomato in FC100S0 and FC75S5 has not been not significant, despite 25% reduction in field capacity moisture at FC75S5. According to the results of this research, the quadratic production function is recommended as the optimal function to estimate the mentioned traits in terms of application and non- application of super absorbent.
Zahra Esfahani; Taher Barzegar; Zahra Ghahremani; Jafar Nikbakht
Abstract
In order to study the effect of water deficit stress and foliar spray of Megafol on yield, fruit quality and water use efficiency (WUE) of tomato cv. Rio Grande, an experiment was carried out in a split plot based on randomized complete block design with three replications in Research Filed at the University ...
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In order to study the effect of water deficit stress and foliar spray of Megafol on yield, fruit quality and water use efficiency (WUE) of tomato cv. Rio Grande, an experiment was carried out in a split plot based on randomized complete block design with three replications in Research Filed at the University of Zanjan, Iran in 2015. Treatments consisted arrangement of three irrigation levels (starting irrigation at 100, 75 and 50% ETc (crop evapotranspiration)) and four levels (0, 1, 2 and 3 ml/L) of Megafol. Results showed significant effects of water deficit stress on yield, fruit quality, and WUE. Megafol treatment showed significant effects on yield, fruit firmness, lycopene content, and WUE. The highest total soluble solids (2.41%) and titratable acidity (TA) (2.09) was found at 50% ETc irrigation treatment. Foliar application of 2 ml/L megafol showed the highest value of TSS (2.29%), TA (1.97%), lycopene (0.83 g/l), fruit per plant (37.94), fruit weight (59.32 g) and WUE (21.78 kg/m3). The interaction effect of irrigation by foliar treatments had a significant effect on plant yield, fruits number per plant and TA. The maximum fruit number (51.73) and plant yield (3278.43 g) was obtained by application of 2 ml/L Megafol under 100% ETc irrigation. Also, the highest TA was achieved in 1 ml/L Megafol and 50% ETc irrigation. According to the results, foliar application of 2 ml/l Megafol improved fruit yield under normal irrigation and deficit water stress and resulted in 16% increase in WUE. Irrigation at 75% ETc level with 16% yield reduction, saved 25% of water as compared to 100% ETc treatment.
Behnam Alizadeh; Zahra Ghahremani; Taher Barzegar; Jaefar Nikbakht
Abstract
In order to study the effect of putrescine on the growth, yield and fruit quality of Sweet pepper (Capsicuum annum cv. Dimaz) under water stress, an experiment was conducted in split plot based on randomized complete block design with three replications at the research filed of university of Zanjan. ...
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In order to study the effect of putrescine on the growth, yield and fruit quality of Sweet pepper (Capsicuum annum cv. Dimaz) under water stress, an experiment was conducted in split plot based on randomized complete block design with three replications at the research filed of university of Zanjan. Treatments consisted of three irrigation levels (50, 75 and 100% ETc) and putrescine were included four levels (0 (control), 0.5, 1 and 1.5 mM). The results showed that water deficit stress reduced growth and fruit yield of sweet pepper. The highest growth, fruit number, yield and vitamin C content was obtained in irrigation 100%, ETc and TSS in 75% ETc. Foliar application of putrescine improved growth and fruit yield. The highest plant growth, plant height (67.00 cm), leaf area (5887.28 cm2), chlorophyll content (2.2 μg /g), plant dry weight (29.41 ETc), vitamin C (42.67 mg/100ml), fruit chlorophyll (0.18 μg /g), fruit length (16.56 cm), fruit number (268.00), fruit yield per plant (0.45 kg) and total yield per hectare (9.98 ton) was obtained with foliar spray of 1.5 mM putrescine under 100% ETc irrigation. According to the results, application of 1.5 mM putrescine can be proposed to improve growth and fruit yield of pepper under water deficit stress.
Mohammad Sayyari; Sajjad Alvandi
Abstract
In order to preserving of button mushroom during storage, an experiment was carried out through a factorial experiment based on a completely randomized design. In this research the effect of calcium ascorbate (0, 0.4 and 0.8 percent) and hot water treatment (45°C) was investigated on qualitative ...
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In order to preserving of button mushroom during storage, an experiment was carried out through a factorial experiment based on a completely randomized design. In this research the effect of calcium ascorbate (0, 0.4 and 0.8 percent) and hot water treatment (45°C) was investigated on qualitative characteristics such as weight loss, firmness, vitamin C, total phenol, polyphenol oxidase activity (PPO) and color parameters. After treatment, mushrooms were kept at 1 ± 0.5°C and 90% relative humidity and then qualitative characteristics were evaluated after 0, 10, 15, 20 and 25 days. The results showed that calcium ascorbate associated with heat treatment had significant effects on weight loss, firmness, color parameters and PPO activity. The effect of time on all parameters in statistical level 1% and the interaction effect of treatment and time on weight loss, color parameters and PPO activity were significant. The best results in preserving mushroom quality appeared to be obtained from 0.8% calcium ascorbate with heat treatment.