1910] FIELD CROPS. 533 



In the strain selection work with Connecticut Seedleaf or Broadleaf tobacco 

 in Lancaster County, the yields of the different filler strains were as follows: 

 Slaughter, F 1, 1,910 lbs., Cooper, R 1, 1,910 lbs., Espenshade, N 1, 1,795 lbs.. 

 " Weaver," B 100, 1,738 lbs., Hershey, K 1, 1,719 lbs., Hostetter, D 1, 1,700 lbs., 

 Ober, J 1, 1,643 lbs., Hoover, A 200, 1,G24 lbs.. Pound, H 100, 1,604 lbs., and 

 Burkholder, A 300, 1,413 lbs. per acre. The results of plant measurements 

 showed that the leaf dimensions presented no close relationship between the leaf 

 expanse and the relative weights of the cured topped plants. 



In an experiment on planting distance and topping height for cigar tobacco, 

 plants were placed 28 in. apart in the row in rows 42 in. apart, and 28 in. 

 apart in the row in rows 36 in. apart. The plants were topped at 15 to 17 or 

 18 leaves for high topping and at 11 to 14 leaves for low topping. Cultivation was 

 continued in each case beyond the stage of leaf spread when it is usually dis- 

 continued in practice. In considering the results of the three previous years 

 with those of 1913, it appeared that in all seasons high topping resulted in the 

 highest gross yield, in two seasons high topping and close planting gave a dis- 

 tinctly greater yield, while in the other two seasons the wider planting gave a 

 slightly higher return. Low topping and close planting led to distinctly higher 

 yields in three out of the four seasons. The close planted tobacco in 1913 

 produced lO.G per cent of seconds a.s compared with 8.6 per cent for the wider or 

 normal planting. Of the normal planted tobacco 75 per cent by weight of the 

 leaves were from 22 to 26 in. in length, and of the close planted tobacco only 66 

 per cent. The high topped plants showed 69 per cent by weight of long leaves 

 known as firsts, and the low topped, 73 per cent. The results for similar spacing 

 and topping tests made in 1913 on a sandy, loam soil in Clinton County are 

 tabulated without conclusions. 



Fertilizer experiments were conducted with the Slaughter strain of seedleaf 

 tobacco. Two plats were fertilized with manure alone at the rate of 10 tons 

 per acre, and two with the same application of manure supplemented with acid 

 phosphate and sulphate of potash at the rate of 300 lbs. and 100 lbs. per acre, 

 respectively, in addition. The average yield of the plats treated with manure, 

 acid phosphate, and sulphate of potash was 1.955 lbs. per acre, and the average 

 yield for the plats treated with manure alone, 1,655 lbs. 



Several different types of tobacco were grown for a number of years to study 

 the effect of environmental conditions in Lancaster County on their character- 

 istics. The results are reported as showing that the various strains retained 

 their characteristic points of distinction. 



Tests in Clinton County on different farms with wrapper and binder strains 

 in 1913 re.sulted in the following yields : Local Havana 1,605 lbs., Wisconsin 

 Havana 1,497 lbs., Connecticut Broadleaf 1,477 lbs., Local Havana 1,410 lbs., 

 Local Havana 1,395 lbs.. Local Havana 1,347 lbs., Connecticut Havana 1,260 lbs., 

 and Local Havana 1,200 lbs. per acre. In tests with other wrapper varieties 

 it was found that seed from shade-grown Cuban planted in the open produced 

 leaves too short and heavy for wrapper purposes. The yields secured in this 

 test were as follows: Halliday Havana, primed, 1,912 lbs., Halliday Havana, 

 cut, 1,425 lbs., Connecticut Havana 1,294 lbs., and Shade-grown Cuban (seed 

 from Connecticut) 750 lbs. per acre. 



The influence of suckering upon the yield and quality of tobacco, H. R. 

 Kkaybill (Pennsylvania Sta. Rpt. 19U, pp. 374, 375).— An experiment was 

 made on two plats to demonstrate the value of suckering tobacco. A difference 

 of 330 lbs. of cured leaf per acre in favor of the suckered plants was secured 

 with a dlfferi nee in quality in favor of suckering even greater than the differ- 

 ence in yield. 



