NATURAL AND CHEMICAL METHODS FOR CONTROLLING CONVOLVULUS ARVENSIS

IBRAHIM, HASHEM M.; GHAZY, SAFAIA A.; AHMED, MOHAMED S.; HOSNY, HASNA A.; EL-ENANY, MAHA F.

doi:10.21608/ejar.2010.192000

NATURAL AND CHEMICAL METHODS FOR CONTROLLING CONVOLVULUS ARVENSIS

Document Type : Original Article

Authors

¹ Weed Research, Laboratory, Agricultural Research Center, Dokki, Giza, Egypt.

² Bot & Microbiol. Department, Faculty of Science, Helwan University, Cairo, Egypt.

³ Faculty of Science, Cairo University, Giza, Egypt.

10.21608/ejar.2010.192000

Abstract

Field bindweed, Convolvulus arvensis is a perennial weed highly distributed allover the world and has an economic impact and may considered as one of the ten 'world's worst weeds'. A series of pot and field experiments were conducted in weed research laboratory during 2009 and 2010 to study the potential of some natural products and chemical herbicides for controlling this weed. Three annual weeds were used as allelopathic donors of natural compounds namely Xanthium strumanam L., Amaranthus gmecizars L, Chenopodium murale L against C arvensis Result indicated that maximum inhibition occurred to C arvensis at rates of 6% of X strumanum L whereas A. graedzans promoted the growth of C arvensis at a concentration 4.6 %. These findings referred dearly that C arvensis can be controlled by the natural products released from X strumarium. One of the herbicides used in this study was {Roundup 48% SL (gtyphosate)). is commen applied in a non cropped area by a concentration of 4 I/fed. on perennial C amen* showed a controlling percentage of 80.7, 83.3 and 72.6% in fresh weight, dry weight and length after one month, respectively, and there is no re-growth of the weed after 60 days of spraying under this rate compared with the check. The second herbicide used in this study was (Starane 20% EC (pyridyloxy acetic add)) which applied in maize field by 300 cm3/fed. on C alvensis in the age of one month and at length of 20cm gave a maximum reduction of 100% in fresh weight, dry weight and length compared with the untreated control. In addition when it was applied on C afvensis at two month age and a length of 50 an the reduction was 45% in fresh weight, 40% in dry weight and 31% in length compared with check.