117 - 



decrease in corn but an increase in the total weight. 

 Where soy beans were sown on plat 11 , the total showed 

 a decrease. 



It should be remembered that while the yield of 

 weeds was small, young plants have a relatively large 

 proportion of roots, and a smaller proportion of that 

 above ground can be harvested. If this is considered 

 probably every plat showed an increase in total yield. 



But was the increase due to any ;^b»€!^4^*9«*-^ 

 effect from the light growth of "weeds'*,^ to the aalculated 

 productive capacity being too small. ** It will bg very 

 diffioitlt to determine the effect of a light growth of 

 weeds in plat experiments since the weight of a light 

 growth may easily come within the range of experimental 

 error . 



THIRD SOWING OF "WEEDS" 



The third sowing of "weeds" made August 6th. 

 failed to grow sufficiently for harvesting except J>lat 8. 

 The millet gave a yield of 191 pounds dry weight (Table 

 XXIX). Compared with the productive capacity the corn 

 gave an increase of 352 pounds of corn alone, making a 

 total increase of 523 pounds. Thisie in line with the re- 

 sults obtained from the second sowing of "weeds". 



EFFECT OF MULCHING 



Plat #3 was mulched both in the corn and in the 



