August 2013
An economics survey of barley crop, implications on optimized farm size and land consolidation: A case of Tehran Province of Iran
The current study attempted to investigate the economic issues of Barely crops in Tehran Province of Iran. The data were collected in association with Tehran province Agricultural – Jahad Organization. Two-stage stratified random sampling method used to select samples and sample size is about 250 farms. The Trans log and polynomial function was used to estimate cost functions. The results...
August 2013
Effect of post-emergence dual herbicides on weeds and yield of maize (Zea mays L.) in order to decrease environmental biology pollution of Atrazine in semi-arid region of Khuzestan, Iran
Many of the chemicals used in pesticides are persistent soil, groundwater and drinking water contaminants. Use of efficient methods of weed integrated management with as regards environmental sustainability and reduce pollution as well as increased crop yield and also weed resistance to herbicides is essential. An experiment was conducted in 2010 in the north of Khuzestan in Iran. Experiment treatments were...
August 2013
Effects of carbon sources, nitrogen sources and minerals on mycelial growth of Cryphonectria parasitica
The study was carried out to assess whether nutrients could potentially affect chestnut trees caused by chestnut blight disease. These strains (JS-6, TC-4 and LT-1) were isolated and identified as Cryphonectriaparasitica by morphologic and molecular method. Cultures in the medium replaced carbon by one of six carbon sources, or nitrogen replaced by one of six nitrogen sources, or element added by one of four...
August 2013
Investigation and comparison of the nutritional value and forage quality indicators in some rangeland’s species at different vegetation forms from Kashan Province of Iran
Information on different rangeland plants’ nutritive values at various phonological stages is important in rangelands management. This information helps rangeland managers to choose proper grazing times to achieve higher animal performance without detrimental effects on the rangeland vegetations. Effects of various plant parts’ phonological stages and vegetation types on reserve carbohydrates and forage...
August 2013
Performance of arabica coffee cultivars under high temperature conditions
The aim of this study was to evaluate the grain yield of Arabica coffee cultivars grown under high temperatures in regions of low altitude and high mean temperatures in the State of Rondônia, Brazil. Thirty-five Arabica coffee cultivars provided by Empresa de Pesquisa Agropecuária de Minas Gerais (EPAMIG) were evaluated. A randomized block design was used with three replications, spacing of 3.0 x 1.0 m,...
August 2013
Annual and seasonal variation in nutritive quality and ruminal fermentation patterns of diets in steers grazing native rangelands
The objective of the study was to evaluate the annual and seasonal changes in the nutritive quality and ruminal fermentation patterns of diet consumed by grazing cattle. Diet samples were collected with four esophageal cannulated steers and four ruminally cannulated steers were used to evaluate the ruminal fermentation patterns. Data were analyzed with a repeated measurements design. No year x season interactions were...
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