Pomology
Abbas Mirblouk; Azam Jafari; Mohammad Reza Vazifeshenas; Jalal Gholamnezhad
Abstract
Purpose: The aim of this study was to improve yield, and characteristics of pistachio nuts of three cultivars by foliar application of volk oil and potassium nitrate. Research method: The study was carried out during the bud swelling stage using a factorial design, following a randomized complete block ...
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Purpose: The aim of this study was to improve yield, and characteristics of pistachio nuts of three cultivars by foliar application of volk oil and potassium nitrate. Research method: The study was carried out during the bud swelling stage using a factorial design, following a randomized complete block design with four replications. The experimental factors consisted of three cultivars, namely 'Fandoghi', 'Hasan-Abbasi', and 'Haj-Abdollahi', and three treatments: volk oil (1% and 2%), potassium nitrate (KNO3) (0.3% and 0.5%), and a mixture of volk oil and KNO3 (1% volk oil + 0.3% KNO3, and 1% volk oil + 0.5% KNO3). A control treatment was also included in the study. Findings: The results of this study showed that the highest percentage of open shell nuts (52.17%) was observed in ‘Hasan-Abbasi’ cultivar, and the highest fresh weight of 100 nuts in ‘Haj-Abdollahi’ (202.2 g). The lowest ounce (29.07), the highest dry weight of 100 nuts and 10 kernels weight were obtained 76.26 and 26.56 g in ‘Fandoghi’ cultivar, respectively. The use of 2% volk oil treatment was effective in budbreaking, as well as increasing the percentage of open shell nuts and reducing the percentage of balk nuts. Research limitations: There was no limitation. Originality/Value: 0.5 % KNO3 increased the fresh and dry weight of 100 nuts and decreased ounce of pistachio in all cultivars. Therefore, the use of volk oil and KNO3 treatments can be effective in pistachio orchards, and increase the quantity and quality of the yield.
Olericulture
Gebremedhin Hailay; Awgchew Haymanot
Abstract
Purpose: Swiss chard (Beta vulgaris L.) is highly appreciated for its nutritional properties, year round availability, low cost and wide use. In central highlands of Ethiopia, Swiss chard has been producing in urban and peri-urban areas but limited information is available about its nutrition and planting ...
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Purpose: Swiss chard (Beta vulgaris L.) is highly appreciated for its nutritional properties, year round availability, low cost and wide use. In central highlands of Ethiopia, Swiss chard has been producing in urban and peri-urban areas but limited information is available about its nutrition and planting distance. Research method: An experiment was designed to study the effects of 50, 100 and 150 kg ha-1 and control (0 kg ha-1), and different spacing with row including 20 cm, 30 cm and 40 cm distance on growth, yield and nutritional composition of Swiss chard in Debre Berhan. Treatments were set in randomized complete block design with three replications making 45 treatment combinations. Findings: Results indicated that total plant fresh weight, total plant dry weight, above ground fresh weight, above ground dry weight, root fresh weight, root dry weight, plant height, leaf number per plant were significantly affect by the interaction effect of plant spacing and N levels. Leaf area index was significantly affected by intra-row spacing but not by N rate and their interaction. Remarkable difference was recorded on total nitrogen, nitrate contents and vitamin C of leaves due to varied N levels. Generally, growth attributes, yield performance and nutritional composition of Swiss chard obtained best at the combination of 100 kg N ha-1 N and 40 cm plant spacing. Research limitation: Intra-Row needs further study above the 40 cm planting distance. Originality/Value: combination of 100 kg N ha-1 and 40 cm in-row spacing can be used for Swiss chard production in Debre Berhan central highlands of Ethiopia.
