82 



Dixie: This variety occurs in fifteen experiments 

 and sustained an average loss of 8.5 percent. 



Dix-Ap.fi: This long staple hybrid was planted in 

 two experiments in 1914. In these two experiments it 

 was not subjected to as severe a test as some of the 

 other varieties. It was found that it did not suffer any 

 loss in either of these experiments. 



Average Losses. 



By a study of averages in the above table it is ob- 

 served that the two check plots lost respectively 40.3 

 percent and 29.2 percent. Tri-Cook lost the smallest 

 number of plants, the average being only 7.3 percent 

 for the five years, while Cook 307-6 followed very close- 

 ly with a loss of only 9.3 percent. 



It is noted that no variety is entirely immune to 

 root-knot and cotton wilt. In the experiments in which 

 Dillon was included it lost the least number of plants. 

 Of the so-called wilt-resistant varieties. Wood lost the 

 largest number of plants in the sixteen experiments- 

 Enough plants of any of the wilt-resistant varieties 

 withstood the diseases, even under the severest condi- 

 tions, to make a fairly good stand and to produce crops 

 above the average in value. 



RELATIVE EARLINESS OF THE WILT-RESISTANT 

 VARIETIES OF COTTON. 



A late variety of cotton is not suited to boll weevil 

 conditions. Only the early or medium early varieties 

 seem to give satisfactory yields under heavy weevil 

 infestation. A wilt-resistant variety may be profitable 

 when it is grown on badly infected soil, but may prove 

 a failure after that territory becomes infested with 

 boll weevils. 



The Experiment Station is selecting strains from wilt- 

 resistant varieties for earliness and longer fiber, but it 

 has no seed ready for distribution. Addresses of grow- 

 ers of wilt-resistant varieties will be furnished on ap- 

 plication to Experiment Station. 



Most wilt-resistant varieties tested in these experi- 

 ments are somewhat late. Below is given a table which 

 shows their relative earliness, as obtained from some 

 of the wilt experiments in different parts of the State. 



