Weeds vs Crops in Early Growth and Competition
The text explains crop first-occupation principles to outcompete weeds, noting light is the key scarce resource. It covers seedbed timing, weed emergence, and the varying competitive abilities of crops like barley and wheat, plus strategies to minimize yield loss by early weed control.
Blackleg Disease in Canola Spreads Across Manitoba and Saskatchewan
A study shows 29 percent of Manitoba canola fields infected with Blackleg in 1988, with 25 percent of plants affected and yields reduced up to 10 percent. Saskatchewan reports up to 50 percent yield losses. The virulent seed borne strain prompts seed treatment and crop rotation of four years, plus burying stubble and avoiding nearby reseeding for four to five years.
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