In order to determine the responses of morphological characteristics, yield and yield components of rapeseed (Brassica napus L.) to plant density and weed interference duration, a factorial experiment was conducted using a randomized complete block design with 3 replications at the Rice Research Institute of Iran (RRII) in Rasht, in the 2008 growing season. The factors comprised plant density a...

In 2008, Wyoming was ranked 8th in barley production and 20th in hay production in the United States and these crops support Wyoming’s $800 million cattle industry. However, with a mean elevation of 2,040 meters, much of Wyoming has a limited crop growing season (as little as 60 days) and relies on late-summer and early-fall streamflow for agricultural water supply. Wyoming is host to over 80 g...

cucumber mosaic virus (cmv) is one of the causal agents of viral diseases that infected mint (mentha spp.). cmv is a member of the cucumovirus genus in  bromoviridae family. the virus is naturally transmitted by aphids in a non-persistent manner.during  growing season 2007-2008, leaf samples from plants of mint fields with symptoms of viral disease were collected in mint fieldas in tehran provi...