f of ASH AS tNSECttClGfi AKD J'UNGlCIDft. 1^3 



"The yield of kainit plots is increased from 70 per cent, to 100 

 per cent, above that where no fertilizer was used, and an average of 

 40 per cent, increase over that of any other fertilizer or combination, 

 without the kainit used. 



"During the latter part of September, I photographed plots 4 and 

 5. The result is reproduced in plate i. 



''These experiments indicate then, that with such a season as the 

 past one, and where the other nutritive matters are present, kainit not 

 only tends to prevent the disease, but also increases the yield." - 



Yellow Leaf Blight of Cotton, by G; F. Atkinson. Bulletin No. 

 41. Mention is made of a field of cotton, upon which a heavy dose 

 of fertilizer was used without kainit, and which was badly affected 

 by blight. Prof. Atkinson, in regard to this'field, says: 



"Had 200 lbs. to 300 lbs. per acre kainit been applied at the time' 

 of the planting, the yield might have been nearly doubled." 

 Continuation of experiments as reported in Bulletin No. 36 by Mr, A, 

 H. Clark, of Hope Hull: 



"September i6th I visited Mr. Clark for the purpose of observing 

 the result of the experiment as presented in the appearance of the 

 foliage of the plant. The result was very marked and plainly indicated 

 the value of kainit in checking the disease. Mr. Clark writes about, 

 the experiments as follows: *It is plain that kainit is a specific for the 

 disease." 



CALIFORNIA, 1880. 



By E. W. Hilgard, Director. Special Report No. i of the College 

 of Agriculture. The attack of phylloxera on the vines produces a 

 diminution of potash and albumen normally contained in the juice. 

 The indication that potash with nitrogenous manures would miti- 

 gate the effect on the vines produced by phylloxera has been verified 

 by experience. 



"The use of these manures alone has so far improved the condition 

 of the vines as to neutralize the injuries done by the insect, and re- 

 store them to their usual productiveness. In all cases where the vines 

 were not too far gone, the condition has been materially improved by 

 the application. 



"Potassic manures appear to exert the most decided Tcffect, &jxd 

 fortunately the material which supplies this important substance* 

 (kainit) can now be readily obtained in commerce." 



