preview

Clubroot Of Canol Marijuana Case Study

Decent Essays

Introduction: Clubroot of Canola is a growing concern in Canada and in the U.S. (particularly in North Dakota). It is a potential problem for western Australia as well. Canola is a valuable crop seeds are primarily used to produce oil for consumption by humans although interest as biofuels, plastics, protein isolates, adhesives, and sealents is growing. Canola meal is also produced as livestock feed. (http://www.canolacouncil.org/markets-stats/industry-overview/)According to the Canola Council of Canada canola grown in Canada contributes $19.3 billion to Canada's economy annualy. (Industry Overview) The value of U.S. canola is estimated at around $270 million by the United State Department of Agriculture.(Ash M., Knisely S.) According to the Australian Department of Agriculture and Food "Canola has become an important crop in Western Australia …show more content…

Until recently the only way to confirm the presence of the pathogen was a bioassay. In the bioassay plants are grown in soil that is thought to be contaminated for 5-6 weeks then the plant is harvested and examined for the formation of root galls. Other detection methods include examination of root hairs and fluorochrome staining of resting spores. The methods above are time consuming. A PCR technique was developed in western canada in 2007 that can detect the pathogen in plant tissue or in the soil. This technique has made it into commercial use. Unfortunately the techinique can only detect the presence of the pathogen not the amount of innoculum that is present in the soil. Detection with quantitative PCR appears to hold the most promise. A method has been developed that can quantify resting spores of Plasmodiophora brassicae. (Hwang S.F., Strelkov S.E., Feng J., Gossen B.D., Howard R.J. 2012) Growers should scout Canola for gall formation approximately 2 weeks before swathing and then send any tissue that appears to be problematic in to a lab for testing. (Industry

Get Access