because of importance of morphological characteristics, canopy temperature and their relationship with grain yield in rice varieties, an experiment was conducted based on split plot in a randomized complete block design with three replications in two years (2013-2014) at the college of agriculture, university of guilan. the experiment consisted of three transplanting times (5, 20 may and 5 june...

the aim of this research was to compare more and less competitiveness of rice cultivars against barnyardgrass for light extinction coefficient and canopy structur. a filed experiment was conducted in 2007 growing season in tonekabon’s rice research station in mazandaran province. the experiment layout was a factorial design with four randomized complete blocks. seven rice cultivars (khazar, sep...

in order to evaluate the effects of organic fertilizer complements application (aminol forte, fosnutren and kadostim) on grain yield, milling properties and nitrogen use efficiency of two rice (oryza sativa l.) cultivars, a field experiment in factorial layout and a randomized complete block design with 10 treatments and 3 replications was conducted at rice research institute of iran in 2009. t...

Considering the increasing rice consumption in the world and also the excessive application of pesticides to increase production, an experiment was conducted to determine the pesticide residues and their effects on nitrogen, potassium and phosphorus content of Hashemi, Khazar and Gohar (SA13) rice cultivars, in a factorial design at randomized complete block design with three replications. In t...

Over the last few decades, Anzali wetland has been at risk of pollutants, especially from heavy metals. The present research analyzes some physical and chemical properties and heavy metals concentration in 27 points in nine stations of Anzali wetland. The samples of each station have been mixed, acidic digested, and analyzed by inductively coupled plasma mass spectrometry (ICP-MS). The mean con...