Over the last several years, there has been increasing interest in amending the soil using cover crops, especially in desert agriculture. One cover crop of interest in the desert Coachella Valley of California is cowpea [Vigna unguiculata (L.) Walp.]. Cowpea is particularly useful in that as an excellent cover crop, fi xing abundant amounts of nitrogen which can reduce fertilizer costs. However...

seedling characteristics of different sunflower (helianthus annus l.) cultivars under drought stress and inoculation with the azospirillum lipoferum in a spilt-factorial layout based on randomized complete block design with three replications were evaluated. treatments included dehydration stress (seed produced on maternal plants which irrigated after 60 (desirable irrigation), 120 (medium stre...

water shortage in the agricultural sector is currently a major challenge in crop production. the more efficient water usage is that which increases yield without increasing water use. thus, a determination of the water-yield relationship is essential. a field study was conducted to examine water-yield relations in three genotypes of soybeans, including optimum irrigation depth, a comparison of ...

in the water-limited areas, the great challenge of the agricultural sector is more production from less water that it can be achieved by increasing water productivity. a field study was conducted to compare various cultivars of wheat to water using line source sprinkler irrigation at gorgan research station in 2005-2006. the effect of variable water supply on yield and wue of six wheat cultivar...

In order to assess whether exogenous application of glycinebetaine and proline could induce salt tolerance in canola, two canola cultivars Dunkled (salt tolerant) and Cyclone (salt sensitive) were allowed to germinate and grow at 0, and 120 mM NaCl for two weeks. Varying concentrations (0, 0.1, 0.5, 1 and 5 mM) of glycinebetaine (GB) or proline were applied through the rooting medium to non-str...

Salinity has been a major problem for world agriculture in recent years, limiting plant production. This study was carried out to determine the effect of salt stress on seedling emergence parameters Dadaş and Helen garden cress cultivars. Three doses (S0: 0 mM NaCl (control), S1: 30 S2: 60 NaCl) salinity level were applied as irrigation their effects (emergence percentage, speed, mean time, dai...

In the South Australian wheat belt, cyclic drought is a frequent event represented by intermittent periods of rainfall which can occur around anthesis and post-anthesis in wheat. Three South Australian bread wheat (Triticum aestivum L.) cultivars, Excalibur, Kukri, and RAC875, were evaluated in one greenhouse and two growth-room experiments. In the first growth-room experiment, where plants wer...