THE CONTROL OF TEXAS ROOT-ROT OF COTTON. 



41 



DEEP SPRING PLOWING AND SUBSOILING. 



The results of the deep sprin<]j pUnvinj; and subsoiUng were not so 

 satisfactory, though there was a very noticeable benefit from this 

 treatment. The plants on the subsoiled land showed much less rot 

 than those on the land which was plowed deep. The cotton was 

 noticeably larger and more productive on all the treated plats, and 

 especially on that which was subsoiled. 



The accompanying illustration of our experimental plat at Petty, 

 Tex., from a photograph taken October 10, 1906, shows on the left 

 root-rot-infected land treated by spring subsoiling and on the right 



Fig. 3.— Cotton field badly infested with the root-rot. showing the result of spring subsoiling. The 

 plat at the left, subsoiled, shows the cotton mostly alive, and the plat on the right, prepared in the 

 ordinary way, shows the cotton nearly all dead. 



the chedc plat which received ordinary preparation. The contrast 

 was not so great, however, throughout the whole area. It was 

 impossible to obtain satisfactory photographs of the plats treated 

 by deep fall plowing, as the leaf worm had destroyed the foliage. 



TREATMENT RECOMMENDED. 



The benefit derived from deep fall plowing is so remarkable that 

 it seems desirable to call the attention of cotton growers to this 

 method of controlling the root-rot. The deep fall plowing should 



102-.V 



