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The Effects of Potassium on the Yield and Fruit Quality Components of Stick Tomato
Efnan Çolpan,Mehmet Zengin,Aynur Özbahçe 한국원예학회 2013 Horticulture, Environment, and Biotechnology Vol.54 No.1
This research was performed to determine the effects of potassium applied on soil to increase dose on the yield and yield components of stick tomato (Lycopersicon esculentum L. var. Şimşek) grown in greenhouse conditions in the Antalya Province in 2010. In this experiment, the Şimşek fresh tomato variety commonly grown in the Mediterranean region was tested with applications of 0, 40, 80, 120, and 160 kg K2O/ha. According to the results,the yield was greatest (195.7 Mt·ha-1) with 120 kg K2O/ha application. The effects of potassium application on tomato yield and yield components were statistically significant (P < 0.01 and P < 0.05). Depending on the application dose,plant stem diameter ranged from 14.22 to 14.99 mm, plant length 173.05 to 181.69 cm, fruit diameter 70.33 to 73.84mm, fruit number per plant 29.20 to 34.57, fruit weight 160.45 to 185.63 g, penetration resistance 2.45 to 2.99kg·cm-2, pH 5.10 to 5.20 and sugar content 3.67 to 3.97 oBrix. In addition, the leaf N/K ratio also affected the tomato yield. Significant correlations were found among the macro and micronutrients of the leaf, yield, and yield components.
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Oktay Algin,Efnan Algin,Gokhan Gokalp,Gokhan Ocakoglu,Cuneyt Erdogan,Ozlem Saraydaroglu,Ercan Tuncel 대한영상의학회 2010 Korean Journal of Radiology Vol.11 No.6
Objective: To evaluate the usage of duplex power Doppler ultrasound (PDUS) for the differentiation of benign and malignant thyroid nodules. Materials and Methods: We prospectively examined 77 thyroid nodules in 60 patients undergoing ultrasound-guided fine needle aspiration biopsy (FNAB). Each nodule was described according to size, inner structure, borders, parenchymal echogenicity, peripheral halo formation, and the presence of calcification (Bmode ultrasound findings). Vascularity as determined by PDUS imaging was defined as non-vascular, peripheral, central, or of mixed type. For each nodule, the pulsatility index (PI) and resistive index (RI) values were obtained. Results of FNAB and surgical pathological examination (if available) were used as a proof of final diagnosis to categorize all nodules as benign or malignant. A receiver operating characteristic (ROC) curve analysis was performed to establish cut-off, sensitivity, and specificity values associated with RI-PI values. Results: A significant relationship was observed between malignancy and irregular margins, microcalcifications, and hypoechogenicity on ultrasound examination (p < 0.05). The pattern of vascularity as determined by PDUS analysis was not a statistically significant criterion to suggest benign or malignant disease in this study (p > 0.05). The central, peripheral, and mean RI-PI values were higher in malignant nodules when compared to the other cytologies (p < 0.05). Conclusion: Vascularity is not a useful parameter for distinguishing malignant from benign thyroid nodules. However, RI and PI values are useful in distinguishing malignant from benign thyroid nodules.
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