16 UXIVKKSITY OF XkW HAMPSHIRE | Sta. Bull. 326 



ence in the brush control that would he nuule more or less effective 

 by any of the fertilizer treatments used, it was expected such differ- 

 ence would be apparent either the first year or later. Labor in brush 

 removal varied both with the kind and with the amount of brush. 



Data on labor requirements for the three methods are given show- 

 ing- the great variation in labor required, computed on an acre basis. 

 (Table X). 



Grazing was permitted on all the plots as an adjunct to brush re- 

 moval and fertilization in checking regrowth of brush. No seeding 

 was done. On most of the areas enough good grass and clover and 

 other ])lant growth was ])resent to make reseeding of doubtful value. 



The above data (Table X) show the amount of labor required 

 during a three-year jieriod to get practical control of brush. The 

 time si)ent the second and third year gives an indication of the per 

 cent of control obtained the fifst year. With ])ulling, 95.2 \)vr cent of 

 total labor was used the first year; with cutting 92.9 per cent; and 

 with burning 87.6 pt^r cent. There are still certain plots that will 

 re(juire some brush removal this year but the amount is small and the 

 brush is chiefly sweet fern, sheep laurel and blueberry. 



The different kinds of brush respond differently to the three meth- 

 ods of removal. Sweet fern is most effectively controlled l)y pulling. 

 With this shrub, pulling requires less time than burning because the 

 verv thick l)ark is quite resistant to fire, and grazing the area does 

 not help except through breakage from treading by the cattle. Pull- 

 ing earh' in the s])ring will control most of the sweet fern, so that 



Table X. Hours labor in removing brush on experimental pasture plots, 



1937-1939 



Pull plot Cut plot Burn plot 



LaCoss 13 14 20 



Falconer 39 3i 42 



Ahcrn 105 78 54 



Atwood 144 94 10 



Kingsburv 132 117 117 



Savage 4(, 43 47 



Wittv 132 95 30 



Dearth 74 58 44 



O'Dell 76 61 42 



Tennev 163 69 84 



Cutter' 126 101 41 



Chaffee 81 50 22 



Muzzev 230 57 80 



Friencl 49 49 19 



Garland 94 126 52 



Hall 94 94 80 



Shaw 127 85 64 



Stewart -II 123 102 



Potter 103 163 163 



1929 1529 1119 



Per acre 101 80 59 



Pulling varied from 12 hrs. 55 min. to 229 hrs. 30 min. per acre. 

 Cutting varied from 13 hrs. 45 min. to 100 hrs. 50 min. per acre. 

 Pnrniiicr varied from 10 hr^; tn S4 lir^. per acre. 



