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۱Application of Self Organizing Map (SOM) to Classify Treatments of the First Order Interaction: A comparison to Analysis of Variance
نویسنده(ها): ، ،
اطلاعات انتشار: World Applied Sciences Journal، بيست و پنجم،شماره۱۰، ۲۰۱۳، سال
تعداد صفحات: ۵
A self organizing map (SOM), an unsupervised artificial neural network (ANN) was applied to classify first order interaction treatments using normally distributed agronomic characters of corn, grain yield (g\plot), number of grains\row, 100 grains weight(g). The SOM showed its convenience to analyze differences among treatments. The SOM classified treatments into clusters which consisting of nodes where treatments in the same node are more similar than treatments in different nodes in the same cluster. However, treatments in the same cluster are more similar than treatments in different clusters. The results of SOM were similar to ANOVA in grain yield; however, in number of grains\row and 100 grains weights (g), ANOVA revealed no significant differences and SOM classified the treatments into five and four clusters, respectively. The SOM can perform analysis of higher degree of interaction such as fourth and fifth degree and higher. Also, SOM can perform analysis for four and five factors and more. The results suggested that using self organizing map is helpful to discriminate clearly the differences among factors and treatments.

۲Root Yield and Quality of Sugar Beet (Beta vulgaris L.) In Response to Biofertilizer and Foliar Application with Micronutrients
نویسنده(ها): ، ،
اطلاعات انتشار: World Applied Sciences Journal، بيست و هفتم،شماره۱۱، ۲۰۱۳، سال
تعداد صفحات: ۵
Many agronomic practices may need to be adjusted to maximize yield and quality of sugar beet. Thus agronomic package must be always modified. The present study was conducted in strip–split plot design at El–Khattara Agricultural Research Station, Faculty of Agriculture, Zagazig University, Egypt during two successive winter growing seasons 2011\2012 and 2012\2013 to study the effect of biofertilizer (rizobacterin and phosphorine) and chemical fertilizer (nitrogen and micronutrient) on root yield and quality of sugar beet cv. Farida. The results revealed that application of nitrogen fertilizer at the rate of 10 kg\faddan (one faddan = 0.42ha) or spraying of mixture of micronutrients twice recorded the highest values in root length and diameter, dry matter per plant as root, top and sugar yields. The effect of biofertilizer mixture application was insignificant in all studied characters. While, root and sugar yields were significantly affected. On the other hand, application of high rates of macro or micronutrients significantly decreased total soluble solids (TSS %), gross sugar, white sugar and purity percentages in the 1 and 2 seasons. Generally, it st nd could be recommended that fertilizing sugar beet plants with 100 kg\faddan inoculated with a mixture of biofertilizer (rizobacterin + phosphorine) and sprayed with micronutrients twice increased productivity and quality of sugar beet plants under this study.

۳Effect of Sowing Dates and Biofertilizer on Growth Attributes, Yield and its Components of Two Faba Bean (Vicia faba L.) Cultivars
نویسنده(ها): ، ، ،
اطلاعات انتشار: World Applied Sciences Journal، بيست و هشتم،شماره۴، ۲۰۱۳، سال
تعداد صفحات: ۵
Two field experiments were carried out at the Experimental Farm of the Faculty of Agriculture (Saba Basha), Alexandria University, Egypt during two successive winter seasons (2011\2012 and 2012\2013) to study the effect of sowing dates (31st Oct, 15th Nov and 30th Nov) and VA–mycorrhizal inoculation (Biofertilizer) on growth yield and its components of two faba bean cultivars (Sakha–1and Giza– 461). The results showed significant increases in plant height, root length, crop growth rate, number of leaves\plant, dry weight per plant and seed yield as well as nitrogen and phosphorus contents with early sowing Oct.31th in both seasons. Sakha–1 cultivar significantly surpassed Giza–461 cultivar and produced higher dry weight per plant, number of pods\plant, seed yield\plant and seed yield\ha in both seasons compared to the other cultivar Giza–1. The average increase of total dry weight per plant in both seasons was 54%, 51% and 54.8% at 50, 70 and 90 days after sowing, respectively and the same increases were obtained by VA–mycorrhizal inoculation. Moreover, seed yield\ha of both faba bean cultivars treated with VA–mycorrhizal was increased by 20.7% and 23.2% more than the non–inoculation treatment.
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