Agricultural Research in N. H. 47 



this soil and in some soil without bark. Those grown in the latter soil failed 

 to grow well, but those grown in bark plus soil thrived vigorously. Appar- 

 ently, the bark absorbed, or otherwise counteracted, the effects of high nu- 

 trients which were accentuated by the steaming. Other cultures in non- 

 sterilized soil did not show this marked initial difference. 



Studies of the growth of cabbage, using two textures of sand and vary- 

 ing amounts of colloidal lignin, showed some benefit from lignin with sand 

 cf finer texture. They confirmed previous results with tomatoes. Water 

 cultures with cabbage (again like tomato) showed no benefit from added 

 lignin. 



A Survey of the Soils of New Hampshire 



The survey of Rockingham County was suspended early in 1942 and 

 was resumed in September, 1946. Upon resumption of the survey, Reeshon 

 Feuer was assigned to the work from the Bureau of Plant Industry, Soils and 

 Agricultural Engineering, Division of Soil Survey. 



Plans involve completion of the county, using aerial photographs fur- 

 nished by the Soil Conservation Service. The photographs are to a scale of 

 1" = 1,320'. In addition to soil type, slope, and erosion, present land use 

 (cover) will also be mapped on the aerial photographs. This change was 

 considered necessary so that all agricultural agencies using the final map 

 might have pertinent land information. 



Rockingham County contains an area of 691 square miles; 400 square 

 miles were mapped prior to 1946 and approximately 50 square miles between 

 September, 1946, and June 30, 1947. Due to the more detailed nature of the 

 mapping on aerial photographs, the rate of progress will be less than on the 

 topographic sheets. However, the resulting map is considerably more valuable 

 due to greater soil detail and more accurate location of soil boundaries. Maps 

 on aerial photographs are also relatively easy to use since actual ground con- 

 ditions are clearly shown. 



More and more people are asking for and using soil survey informa- 

 tion. One important use has been the locating of suitable soil types for es- 

 tablishing new orchards. The mapping has been used as a field training 

 guide for training new soil scientists and students. Soil maps are being used 

 as a basis in planning soil conservation programs on individual farms in the 

 country. 



A preliminary draft of a "Key to the Soils of Rockingham County, New 

 Hampshire" has been prepared. 



Reeshon Feuer 



VEGETABLES 



Squash Storage 



Work done during the year was limited to the Butternut variety. Vari- 

 ous treatment methods were used, but the principal one was treatment with 

 one per cent formaldehyde and then dipping in Dowax, as contrasted to 

 squash untreated. On December 16, 22 per cent of the treated squash and 

 33 per cent of those untreated had spoiled. Of the remainder, there had 



