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.
Tayebeh Adeli; Ataolah Siadat; Sirous Jafari; Ahmad Koochak Zadeh
Abstract
To evaluate the efficiency of zinc and cadmium on the Fe and Cu uptake and some physiological indices in Trifolium Alexandrinum, an experiment was carried out using Factorial Design based on Randomized Blocks with four replications. The experiment factors included four levels of Cd (0, 25, 50, 100 mg/kg ...
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To evaluate the efficiency of zinc and cadmium on the Fe and Cu uptake and some physiological indices in Trifolium Alexandrinum, an experiment was carried out using Factorial Design based on Randomized Blocks with four replications. The experiment factors included four levels of Cd (0, 25, 50, 100 mg/kg soil) and four levels of zinc (0, 25, 50, 100 mg/kg soil) in greenhouse conditions in Agriculture and natural resource faculty greenhouse located in Mola Sani 40 km north of Ahwaz in 3 November 91-92 . Carmel variety was used in this study. The results showed that Cd consumption on leaf area index (P<0.01), and dry matter (P<0.05) was significant leading to a reduction in the content of all these elements. The results also showed that applied Cd had significant effect on the Fe and Cu concentration in plant tissues, too. Cd application decreased Fe concentration to 22.08 mg/kg and Cu to 4.47 mg/kg in shoot and leaf. The zinc application increased leaf area index and dry matter in significant level. With Zn application separately, the amount of Fe and Zn decreased by 14.28 and 3.36 mg/kg in shoot and leaf, respectively.
Samaneh Zadehparizi; Ahmad Tajabadi Pour; Isa Esfandiarpoor
Abstract
Potassium is a very important plant nutrient not only because of its large demand, but also because of its important physiological and biological functions in plant. Therefore, understanding of soil potassium status can lead to better use of potassium fertilizers. This study was done to evaluate 10 extractants ...
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Potassium is a very important plant nutrient not only because of its large demand, but also because of its important physiological and biological functions in plant. Therefore, understanding of soil potassium status can lead to better use of potassium fertilizers. This study was done to evaluate 10 extractants for estimating available potassium for pistachio in 28 calcareous soils of Rafsanjan in a completely randomized design with three replications in greenhouse conditions in Vali-e-Asr university of Rafsanjan in 2014. Potassium was extracted by 1 M NH4OAc, 0.01 M CaCl2,2 M NaCl, 0.1 M HNO3, boiling 1 M HNO3, distilled water, 1M NaOAc, Mehlich1, Mehlich3 and DTPA-NH4HcO3.The results showed that extraction of K decreased in the order: boiling 1 M HNO3> 2 M NaCl > 1M NaOAc > Mehlich3> 1 M NH4OAc > 0.1 M HNO3> DTPA-NH4HcO3> Mehlich1> 0.01 M CaCl2> distilled water. 1M NaOAc was selected as the most suitable extractant for potassium in calcareous soils of Rafsanjan on its high correlation with leaf and shoot K concentration. Multiple regression equations indicated that potassium extracted from the soil dependent to different physical and chemical properties of soil such as amount of clay and cation exchange capacity.