FIELD CROPS. 



303 



latter part of the season was unfavorable, and on none of the plats was 

 the stand ])erfect. Both the actual yields and those corrected to a full 

 stand are tabulated. According to the authors, the results indicate that 

 a satisfactory yield of tobacco can be produced on the worn soils of Ken- 

 tucky by applying i)otash fertilizers, and es[)ecially potash with nitrogen. 



Analyses (fertilizer constituents) are tabulated of tobacco from each 

 plat, of tobacco stems, and of tobacco grown elsewhere. They show 

 that the tobacco raised on the experimental plats was much poorer in 

 nitrogen, phosphoric acid, and especially in potash, than is usually the 

 case. 



Field experiments ^vith tobacco, E. S. Goff ( Wisconsin Sta. Bpt. 

 1894, xjp. 372-376). — An experiment in irrigating tobacco was carried 

 on during 1893 and 1804 — both exceptionally dry seasons. In 1893 the 

 first irrigation was made July 27, during the warmer i)art of the day, 

 when the plants had a wilted appearance. The soil of the irrigated 

 plat was saturated as deep as the plow line. The irrigation was re- 

 peated August 8. In 1894 but one irrigation was given, July 14. Tlie 

 gain in weight of cured leaf, presumably due to irrigation, was x)racti- 

 cally nothing in 1893, and G.9C per cent in 1894. 



One irrigation seemed to give better results than two. The author 

 states that "from experiments thus far made it would appear that less 

 profit is likely to accrue from the irrigation of tobacco than of straw- 

 berries." 



In the investigation of the relation of distance in planting to yield 

 and thickness of leaf, i^lauts were set 20 by 31, 20 by 30, and 24 by 42 

 in., June 1 and 2, topped July 17 and 18, harvested August 18 and 20, 

 and stripped during the week after November 3. 



The following table gives the yields per acre, comparative weight of 

 leaves, and area per pound of leaf: 



Yield of tobacco grown at different distances. 



3 ft. 6 in. by 2 ft 



3 ft. bv 1 ft. Sin 



2 ft. 7 in. by 1 ft. 8 in 



Yield 

 per acre. 



Weight of I Area per 



400 average! pound of 



leaves, i leaf. 



Pounds. ! roundx. 



1,649.74 I 9.89 



1, 886. 53 8. 79 



2, 084. 18 9. 46 



Sqtiare feet. 

 40.86 

 42.11 

 42.01 



The author concludes that "The closer planting was followed by a 

 marked increase in yield; and closer planting in the row was followed 

 by a thinner leaf, but lessening the distance between the rows was not." 



Experiments in the curing and culture of tobacco, E. S. Goff 

 {Wisconsin Sta. h'jyt. 1891, pjK 351-371, Jigs. 3, d<jms. J). — To facilitate 

 investigation in the curing of the crop a small curing house (28 by 

 32 ft.) was built, inclosed with close-fitted drop siding, divided into 4 

 compartments and furnished with ventilating doors and a central 



