The initial development of common bean plants (Phaseolus vulgaris L.) relying on symbiotic nitrogen (N) can be limited by delayed active N2 fixation, requiring supplemental N which in turn may inhibit the symbiosis. Five experiments were carried out hydroponics to identify initiation nodulation and nitrogenase activity cultivars, effects additions mineral plant growth. Three evaluated growth fi...

plant density can be as a supplementary section in the increase of the yield of wheat products. in order to research the effect of density on the yield and yield components in wheat, an experiment was conducted in the agricultural research farm located in araghi mahalleh, gorgan city using three density levels (150, 262, 375 plant in square meter) and three cultivars of wheat (tajan, falat, n-8...

introduction soil salinity is one of the major agricultural problems and it is limiting crop productivity in many parts of the cultivated areas all over the world. saline soils are differentiated by the presence of great ratios of na/ca, na/k, ca2+, mg2+, and cl/no3 (gratan & catherine, 1993) and high levels of neutral salts in the surface layers, which are resulting from the capillary action (...

Experiments were carried out to determine the potential of using the powder and essential oil from dried ground leaves of Cymbopogon citratus (lemon grass) to control storage deterioration and aflatoxin contamination of melon seeds (Colocynthis citrullus L.). Four mould species: Aspergillus flavus, A. niger, A. tamarii and Penicillium citrinum were inoculated in the form of conidia suspension (...

There have been several outbreaks of food poisoning linked to the consumption of raw sprouts. The two most common pathogens associated with sprout consumption are Salmonella spp and verocyto-toxin producing Escherichia coli. During sprouting the warm, humid and nutrient rich conditions are ideal for bacterial growth. Pathogenic bacteria can infect seeds at very low numbers only to grow to dange...