172 
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ont treatments of liot water and one of potassium sulphide repeated 
in six different plats were made. The results show an average extra increase 
of treated over untreated of at least double the amount of that destroyed 
by smut in the untreated plats. (D. G. F.) 
485. Keller man, W. A. Smuts of sorghum. Bull Kansas State Agric. Coll. Ex. Sta., 
Bot. Dept., No. 23, Aug., 1891, pp. 95-101, pi. 3. Distinguishes two species 
of sorghum smut in Kansas: Grain smut ( Ustilago sorghi (Link?) Passerini) 
and head smut (Ustilago Reiliana, Kuhn), giving distribution in United 
States as far as known. Records series of experiments in greenhouse, prov¬ 
ing possibility of infection of sorghum plants by infection of seed with 
spores, and series of field experiments with fungicides, which gave contra¬ 
dictory results. (D. G. F.) 
486. Kellerman, W. A. Spraying to prevent wheat rust. Bull, Kansas State Agric. 
Ex. Sta., Bot. Dept., No. 22, Aug., 1891, pp. 90-93. Gives result of experiment 
with several varieties of wheat, barley, and oats to ascertain the value of 
sulphur, potassium sulphide, iron chloride, and the Bordeaux mixture as 
fungicides in jn'evention of the rust. Finds, although the attack of the rust 
was a violent one, none of the treatments prevented the disease perceptibly, 
Bordeaux mixture possibly excepted, as giving slightly beneficial results. 
(D. G. F.) 
487. Kellerman, W. A. Test of fungicides to prevent loose smut of wheat. Bull. 
Kansas State Agric. Coll. Ex. Sta., Bot. Dept., No. 22, Aug., 1891, pp. 81-90. 
Reports amount of loose smut of wheat on college farm in 1891 as ranging 
from 0 per cent to 16 per cent. Gives entirely negative results of use of fol¬ 
lowing chemicals as fungicides in its prevention: Bordeaux mixture, eau 
cdleste, potassium bichromate, copper nitrate, copper sulphate, copper 
chloride, mercuric chloride, WarcFs seed manure, and hot water; 109 plats 
in experiment. (D. G. F.) 
488. Kilgore, B. W. Combination of arsenites with fungicides. Bull. North Carolina 
Agric. Ex. Sta., No. 77 b, Technical No. 2, Raleigh, July 1,1891, pp. 8-11. Gives 
analyses showing amount of soluble arsenic (As^Oj) in arsenical mixtures 
having in solution copperas, copper sulphate, and iron chloride. Finds the 
injury to the leaves is in direct proportion to the amount of soluble arsenic 
present in the mixtures and that this amount is increased by the mixing of 
the above substances with white arsenic, Paris green, or London purple. 
Shows entire absence of soluble arsenic in mixtures of Paris green or Lon¬ 
don purple with Bordeaux mixture and records no ill effects to leaves of fig, 
grape, mulberry, blackberry, peach, pear, and apple from the application of 
these mixtures. Proportion, 1 pound of arsenite to 100 gallons of mixture. 
Shows great power of ammonia and sodium carbonate as solvents of arsen¬ 
ites and warns against use of eau celeste with arsenites. (D. G. F. ) 
489. Kinney, L. F. The downy mildew of the potato blight. The Bordeaux mixture as a 
preventive of the potato blight, experiments with, at this station. 3d Ann. Rept. 
R. I. Agric. Ex. Sta., Part II, Providence, Jan., 1891, pp. 137-152 pi. 4. After 
giving description of disease, copying Scribner, records results of field ex¬ 
periment in its treatment. The experiment was made in field of 30 dif¬ 
ferent varieties of potatoes, and careful estimates of number and weight of 
tubers from vines sprayed and not sprayed with Bordeaux mixture, formula 
b, show that late potatoes were much more benefited by spraying than were 
early varieties. Concludes yield of merchantable tubers was increased 9.9 
per cent by spraying three times with Bordeaux mixture, duo to increase in 
size of tubers; that percentage of rotted tubers was 150 per cent greater in un¬ 
treated than treated vines; that the yield of merchantable potatoes was in¬ 
creased 34.5 per cent by live sprayings and the rot decreased,when correction 
lor varieties is made,by 253.3 per cent in number of affected tubers. (D. G. F.) 
