National Repository of Grey Literature 161 records found  beginprevious151 - 160next  jump to record: Search took 0.01 seconds. 
Regulation weedy plants in a growth of winter rape
KAMEŠ, Josef
This work is focused on the problems of weed plants in winter rape which has been in recent years one of the most significant crop-plants in the world and represents one of the few plants grown in the Czech Republic where we can expect positive profit. The problems of weed plants is one of the main negative factors affecting the yield and quality of rape. For this reason I was following the weed infestation rate in three variants in one land during a certain vegetation period of winter rape. The number of weed plants occurred in the given land was recorded and assessed regularly. The most frequent weed was field pansy, which made up approximately 85 % of all the range of weeds which occurred in the explored land. The second most frequent weed was Field pennycress which made up 14 % of the weeds occurred. There were hardly any other kinds of weeds in the land. From the resultant values we can make the conclusion that long-term fight against persistent weeds has to be done carefully and has to be based on complex protection which consists of preventive and direct methods of weed plants regulation.

National Repository of Grey Literature : 161 records found   beginprevious151 - 160next  jump to record:
Interested in being notified about new results for this query?
Subscribe to the RSS feed.