New York Agricultural Experiment Station. 81 



and air-slaked lime in the drills. On every tretited plat in Series 

 I tlie yield was considerably greater than on the adjoining un- 

 treated plat, the increase varying from 5924 pounds to 15013 

 pounds per acre; or in terms of barrels^'^ from 40 to 100 barrels 

 per acre. Certainly, this is a very creditable showing for the 

 surphur-lime treatment. 



The results in Series I indicate that the smaller amounts of 

 125 and 250 pounds per acre were more beneficial than the 

 larger amounts; but these results are to be considered onlij as 

 indications, because plats at the opposite ends of the field do not 

 admit of close comparison with each other. That this is true is 

 shown by the fact that the check Plat B at the south end of the 

 field yielded 486 pounds while the check Plat L at the north end 

 yielded only 183 pounds. Smut was more severe toward the 

 north end and the onion maggot also caused more damage there. 



The results in Series II show that sulphur, even when used 

 alone, is tolerably efficient as a preventive of smut. Here, as 

 in Series I, every treated plat yielded more than its adjoining 

 check plat, and the difference varied from 2818 pounds per acre 

 to 8193 pounds per acre; or from 181 barrels to 54| barrels per 

 acre. 



Since Series II adjoined Series I, there is reason to believe 

 that the results obtained in the two series represent roughly the 

 efficiency of sulphur and lime used together as compared with 

 sulphur used alone. 



In Series II the larger quantities of sulphur appeared to give 

 the better results, which is in direct contrast to the results in 

 Series I, where sulphur and lime were used together; but as 

 has already been stated close comparisons can not be made be- 

 tween plats located at opposite ends of the field. The yield per 

 a<;re on Plat S should have been quite as large as on Plat K 

 because Plats K and S were in close proximity at the worst 

 tnfested end of the field and their check Plats L, and T, gave 

 approximately the same yield. 



"In Orange County the onions are sold mostly ty the barrel. A barrel 

 of onions weighs about 150 pounds. ■ 

 6 



