]\Iay, 1937] Agricultueal Research in N. H., 1936 5 



Publications 



Station Publications issued during the year were as follows: 



Station Bulletin 285 Inspection of Commercial Feeding Stuffs, 1935 



Station Bulletin 286 Results of Seed Tests, 1935 



Station Bulletin 287 Twenty-five Years of Research 



Station Bulletin 288 Inspection of Commercial Fertilizers 



Station Bulletin 289 Station Report, 1935 



Station Bulletin 290 Rural Real Estate Tax Delinquency in New 



Hampshire 

 Station Bulletin 291 Maintenance of Grade A Milk 

 Station Circular 49 Preparation of Bordeaux Mixture with Special 



Reference to the Use of Commercial Hydrated 

 Lime 

 Station Circular 50 Fertilizer Experiments with Hay Crops in the Con- 

 necticut Valley 

 Technical Bulletin 62 Further Determinations of Oil Penetration into 



Insect Eggs — IX 

 Technical Bulletin 63 Penetration of Arsenic into Insects — ^X 

 Technical Bulletin 64 The Heat Production of the Sheep and Pig Be- 

 fore and After Castration 

 Technical Bulletin 65 Further Detemiinations of the Penetration of 



Arsenic into Insects — XI 

 ^Scientific Contribution 49 Variations in Yield of Pure Line Green 



Mountain Potatoes Grown in a Control- 

 led Environment 



Economic Pasture Study Started 



An economic study was made by M. F. Abell this past year of 255 

 farms, on 115 of which pasture improvement work has started. On 

 these farms, having 4975K' acres of open and 7324 acres of wooded pas- 

 ture, and carrying 2425 animal units, 322^ acres were improved by top- 

 dressing, 88yo acres by plowing and reseeding with fertilizing and 23 

 acres of effective clearing of brush, — a total of 434 acres, or 3.6 per cent 

 of the total open pasture. This improv^ement together with some con- 

 version of hayland into pasture, a slight increase in silage, more green 

 feed, and an increase in annual pasture accounted for a reduced acreage 

 of open pasture used per animal unit by .86 of an acre. 



Open pasture per animal unit on the 115 farms where improvement 

 work had been done averaged 2.05 acres, while on 140 farms without it 

 open pasture averaged 2.91 acres per animal unit. [Purnell Fund) 



Land Use in Back Areas 



Processes that have within the last century' shrunk a back-country 

 area into agricultural insignificance are being made clear by the land- 

 use study in southern Grafton County, in charge of H. C. Woodworth. 



By means of detailed maps we can trace the decline from a period 

 when this hill-region supported over a thousand farms, with a popula- 

 tion of 4700 people as well as 5500 cattle and 21,000 sheep, until the 



