Nader Khadem Moghadam Igdelou; Ahmad Golchin; Khadije Farhadi
Abstract
In order to study the effect of Cobalt, Molybdenum, and Nitrogen on the growth of Phaseolus vulgaris in soilless culture, a pot experiment was conducted in 2015-16 and in July, at 25˚C and light intensity of 40,000 lux as a factorial based on a CRD with 36 treatments and three replications in the greenhouse ...
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In order to study the effect of Cobalt, Molybdenum, and Nitrogen on the growth of Phaseolus vulgaris in soilless culture, a pot experiment was conducted in 2015-16 and in July, at 25˚C and light intensity of 40,000 lux as a factorial based on a CRD with 36 treatments and three replications in the greenhouse of Zanjan University. The test factors consisted of four levels of Nitrogen (50, 100, 150, and 200 mg/l), three levels of Molybdenum (0.067, 0.2, and 0.6 mg/l) and, three levels of Cobalt (0.006, 0.06, and 0.3 mg/l). Factor levels were prepared by adding ammonium nitrate, ammonium molybdate, and cobalt chloride to a stock solution. Results of morphological traits showed that the highest pod dry weight was obtained in N100Mo0.6Co0.06 treatment which had a maximum difference of 47.9% with other treatments. The highest dry weight of shoots was obtained from N150Mo0.6Co0.006 treatment and the highest root dry weight was obtained from N150Mo0.6 and N150Co0.3 treatments. Also, the highest number of pods was obtained in N150Mo0.6, N100Co0.3 and Mo0.6Co0.3 treatments with values of 235.2, 266.4, and 220.8 g/pot, respectively. Investigation of physiological traits showed that the highest concentrations of Nitrogen, Molybdenum, and Cobalt were obtained from N200Mo0.6Co0.3, N150Mo0.6Co0.3, and N150Mo0.067Co0.006 treatments, respectively. Overall, it can be stated that the application of N100Mo0.6Co0.06 treatment can positively affect the dry weight of pods, which are economically productive and improve the performance of P. vulgaris (Talash cultivar).
Nader Khadem Moghadam Igdelou; Ahmad Golchin; Khadije Farhadi
Abstract
Elements such as nitrogen (N), molybdenum (Mo), and cobalt (Co) are needed to improve the quantity and quality of beans. In order to study the effects of these elements on pod yield and concentration of nutrients in bean, a factorial pot experiment was conducted in 2016 in greenhouse conditions at University ...
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Elements such as nitrogen (N), molybdenum (Mo), and cobalt (Co) are needed to improve the quantity and quality of beans. In order to study the effects of these elements on pod yield and concentration of nutrients in bean, a factorial pot experiment was conducted in 2016 in greenhouse conditions at University of Zanjan, using a CRD with three replications. The experimental factors consisted of four levels of N (50, 100, 150, and 200 mg/l), three levels of Mo (0.067, 0.2, and 0.6 mg/l), and Co (0.006, 0.06, and 0.3 mg/l). The results showed that the highest dry weight of pods was obtained from treatment of N100Mo0.2Co0.06 which was 34.05 g/pot and had no significant difference with N150Mo0.6Co0.06 treatment. The application of different levels of factors increased the concentrations of N, P, and Mg in bean leaves in treatments of N200Mo0.6Co0.3, N200Mo0.6Co0.006, and N150Mo0.6Co0.3 and the highest increase in concentrations of mentioned elements were 6.94, 0.91, and 0.41% respectively. However, the concentrations of K and Ca decreased as a result of the application of the factors. The highest concentrations of Fe, Mn, Cu, Mo, and Co bean were measured in treatments of N200Mo0.6Co0.006, N150Mo0.2Co0.006, N200Mo0.6Co0.3, N150Mo0.6Co0.3, and N150Mo0.067Co0.006 which were 490, 185.4, 8.26, 284.5, and 54.9 mg/kg, respectively. Overall, according to the results, N100Mo0.2Co0.06 is recommended for bean.
mohammad reza malekzadeh shamsabad; Majid Esmaeilizadeh; Hamidreza roosta; fatemeh nazoori
Abstract
In soilless culture, lack of correct management in fertigation causes stress in plants due to restricted root volume and low water holding capacity of substrate. The present study aimed to assess managing the fertigation practice and foliar application of potassium sulfate in soilless culture of strawberry ...
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In soilless culture, lack of correct management in fertigation causes stress in plants due to restricted root volume and low water holding capacity of substrate. The present study aimed to assess managing the fertigation practice and foliar application of potassium sulfate in soilless culture of strawberry cv. paros. A factorial experiment was conducted with two factors including fertigation frequency at three levels (1, 4 and 10 times per day) and foliar application with potassium sulfate at three levels of concentration (0 as control, 1 and 2 g/L). The experiment was carried out based on a complete randomized design with three replications in Vali-e-Asr University of Rafsanjan. Results indicated that increasing the fertigation frequency up to four times a day led to a significant increase in dry weight of shoot and root, number of fruits, concentration of chlorophyll a and b, leaf relative water content and leaf Ca and Mg content. The highest values of leaf area, fruit weight, number of inflorescence as well as potassium and iron content of leaf and root were obtained by 10 times of fertigation per day. Potassium sulfate foliar application with concentration of 1 g/L had the most effect on leaf area as well as shoot, root and fruit dry weight, vegetation index increased in plants treated with 2 g/L potassium sulfate compared with those without any foliar application treatment. The highest content of leaf soluble carbohydrates belonged to the plants treated with once-a-day fertigation and foliar application of 2 g/L potassium sulfate.
masoud arghavani; Saeedeh Savadkoohi; Seyed Najmadin Mortazavi
Abstract
This experiment was conducted in order to investigate morphological and physiological responses of Kentucky bluegrass (Poa pratensis L.) to salinity and silicon application in horticultural science department at the University of Zanjan in 2015. The salinity levels (0, 40 and 80 mM NaCl) and sodium silicate ...
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This experiment was conducted in order to investigate morphological and physiological responses of Kentucky bluegrass (Poa pratensis L.) to salinity and silicon application in horticultural science department at the University of Zanjan in 2015. The salinity levels (0, 40 and 80 mM NaCl) and sodium silicate (0, 0.75 and 1.5 mM) were applied in complete nutrient solutions. Salinity reduced root and shoot growth, visual turf quality, leaves chlorophyll and potassium content, whereas electrolyte leakage, proline and sodium content increased with increasing salt concentration in nutrient solution. Silicon application ameliorate adverse effects of salinity in all factors except in potassium content and this effect was more pronounced in 80 mM NaCl. Although there was no significant difference between 0.75 and 1.5 mM sodium silicate in visual turf quality, root growth and chlorophyll content, altogether, application of 1.5 mM silicon had better results to increase salinity tolerance in Kentucky bluegrass, suggesting that higher concentrations of silicon must be evaluated.