March, 1938] Agricultural Research in N. H. 25- 



The larger plots which were seeded in an adjacent area were pastured 

 during 1937. One end of this area was so wet during May and early- 

 June that it was felt inadvisable to pasture the plots until the soil was 

 firm. Orchard grass and smooth brome grass were so large and woody 

 by this time that the cattle would not eat them. After the cows were 

 taken out these plots were mowed. 



Later recovery indicated that these larger growing species are su- 

 perior for summer pasture to some of the smaller growing grasses, in- 

 cluding the blue grasses and rough stalked meadow grass. 



Plots with alfalfa proved to be the most palatable and produced the 

 most forage. The alfalfa seedings were distinctly superior to sweet 

 and Dutch clovers in amounts of forage produced. This fact would 

 appear to indicate that alfalfa should be included in pasture seedings 

 on land adapted to the crop. {Bankhead-J ones Fund) 



Tests of TVA Fertilizer 



Tests of phosphatic materials furnished by the Tennessee Valley 

 Authority were quite promising in both greenhouse and field trials 

 and will be continued. The materials were checked against regular 

 superphosphate to provide the equivalent amounts of PoOg. In the 

 greenhouse tests three different soils were selected from the Experi- 

 ment Station plots at Greenland and are members of the same soil type 

 but have received vastly different treatment in the past few years. 



Soil No. 1 has received neither fertilizer nor lime nor has it been cul- 

 tivated for at least twenty-five years. 



Soil No. 2 was seeded to alfalfa in 1931. It has received an application 

 of complete fertilizer every year since then. It was plowed and re- 

 seeded to alfalfa in 1934. No lime has ever been applied. 



Soil No. 3 has also been in alfalfa since 1931 and has received identical 

 fertilizer treatment as No. 2. but in addition a heavy application of 

 lime was made at the time of seeding the alfalfa in 1931. None has 

 been applied since. 



On Soil No. 1 ordinary 16% superphosphate gave best returns in the 

 greenhouse test with treble-superphosphate and fused white phosphate 

 rock running next. On Soil No. 2 calcium metaphosphate, treble-super- 

 phosphate, dicalcium phosphate with silica added, and fused brown 

 phosphate rock surpassed 16% superphosphate. On soil No. 3 monocal- 

 cium and magnesium phosphate, calcium metaphosphate and fused 

 white phosphate rock outran 16% superphosphate. 



In the field trials the treble-superphosphate ran highest but the dif- 

 ferences are not believed to be significant. For field work the calcium 

 metaphosphate (65.5% PoO,,) is the most difficult to handle as it is 

 quite finely divided. Moreover, the material must be applied in smaller 

 quantities since it has the highest concentration of phosphoric acid of 

 any of the carriers. This may account for a slight decrease in yield in 

 this plot. {Bankhead-J ones Offset Fund in cooperation with Tennes- 

 see Valley Authority.) 



