DESCRIPTIVE MANUAL 247 



Extermination.— The morning-glory must be treated like horse 

 nettle since it is a perennial. In addition to. the usual methods of 

 cultivation sheep have been recommended to destroy the weed. 

 This method is certainly applicable where the weed occurs in pas- 

 tures. 



In Wallace's Farmer, Mr. L. C. Greene's experience in killing 

 morning-glory is given as follows: "A large farmer had 145 acres 

 of corn. One piece of twenty acres, fall plowed, on a south slope, 

 was planted to corn the first of May, and by the time the plowing 

 and planting were all done it was near the last of May. The early 

 planted field was thick with morning-glories and had received no 

 cultivation since they commenced to grow. By the time the corn 

 was four inches high the morning-glories were eight or more inches 

 tall, growing in mats on the ground hunting for something to climb 

 upon. The proprietor viewed the field, and instead of sending out 

 the cultivator sent out three stirring plows and the planter soon 

 followed. In two days the field was plowed and planted again and 

 a fine crop of corn was raised with very little bother from the vines, 

 and even the following year the vines bothered but little. 



"Some years ago I fall plowed a small field that was badly in- 

 fected with morning-glory vines and smartweeds. The 24th of the 

 next May I was ready for that field, but from a little distance it 

 looked as if a mowing machine and a rake would be the proper tools 

 to use. I plowed rather deep to do a good job, the planter im- 

 mediately followed, and in four days after the planter some corn 

 could be seen, and it was eight inches high when the cultivator 

 got to it. It was just a matter of stirring the soil all season, for 

 there were no large weeds to kill." 



The Prairie Farmer makes these suggestions concerning the 

 eradication of morning-glory: "Another way to fight the morning- 

 glory is to grow two or three pasture crops a year on the land for 

 sheep. One of them ought to be a cultivated crop. The morning- 

 glory would not be able to hold out long against such treatment. 

 The strong point in favor of this method is the profitable character 

 of the work. ' ' 



Wallace's Farmer says concerning its destruction: "They do 

 not spread rapidly except under cultivation, as they grow 

 mostly from the roots, and these are distributed over the fields 

 by cultivators. If when the farmer first discovers a patch out of 

 cultivation for a year or two he plows it shallow and frequently 



