24 Experiment Station Bulletin 345 



Producing Full Roughage Requirements on Dairy Farms 



A pasture program under New Hampshire conditions that will pro- 

 vide adequate late summer pasture is desired. A study to provide as 

 nearly as possible adequate late summer pasture, with special late summer 

 pasture plants, legume, and grass, has been instituted. One or more 

 farms in each county have been selected and work started on a program 

 to provide pasturage for the stock on such farms. (Ford S. Prince, P. T. 

 Blood, C. L. W. Swanson, Max F. Abell, T. G. Phillips, G. P. Percival, 

 K. S. Morrow) 



Top-Dressing Old Pasture Lands 

 With Lime and Fertilizer 



This experiment was continued in two locations with certain modifi- 

 cations in treatment. Fundamentally, the trials are quite similar, although 

 one is located in eastern New Hampshire and the other in the Connecticut 

 Valley area in the western part of the state. 



The Livingston pasture (Connecticut Valley) is especially responsive 

 to fertilizer changes. Continued use of nitrogen alone even under close 

 grazing will eliminate wild white clover, whereas changing to a complete 

 fertilizer or to a fertilizer containing potash and phosphoric acid will 

 cause the reappearance of clover within a month of its application, if 

 such application is made in the spring. 



Yield records from both pastures were taken in 1941, but owing to 

 drought, yields were very low. Fertilizer treatments were last applied 

 in the spring of 1941. 



Although it was planned to discontinue work on the Seavey pasture 

 (eastern New Hampshire), this study was continued during 1941 in order 

 to conduct soil studies on certain treatments in both pastures which have 

 been top-dressed over a long period. 



During the autumn of 1941, ten core samples from each plot were 

 taken on both pastures to determine changes in soil structure and organic- 

 matter content due to treatment. This work is now in progress in the 

 laboratory and a report on aggregation and organic content should be 

 ready in 1942. Completed under this title. (F. S. Prince, P. T. Blood, 

 G. P. Percival, P. N. Scripture) 



Legumes on Neglected Hay Lands 



This experiment, which has been conducted on two farms in south- 

 eastern New Hampshire, has been active since 1926 but has undergone 

 revision, addition, and changes. Two publications have been issued in 

 past years. A circular is now in press dealing with newer findings and 

 supporting data. Excerpts from the summary follow. 



1 he data presented in the circular support previous work which 

 indicated that the alfalfa crop responds well to annual fertilizer applica- 

 tions and that, judiciously fertilized, alfalfa mav be expected to pav 

 excellent returns for liberal quantities of plant food. 



On one set of plots, the elements used singlv returned in increased 

 hay production $3.72, $2.29. and $1.39 for each dollar invested in potash, 

 nitrogen and phosphoric acid, respectively. 



