845 



Experiments to test tlie effects of fuugicidcs and of fertilizers were 

 made at Anburn, Matthews Station, and Hope Hnll, Alabama, in 1891. 

 The fnngic'ides used (Bordeaux mixture, eau celeste, and co])per sul- 

 phate) were without effect. Kainit, nitrate of soda, salt, cotton-seed 

 meal and phosphate, blood and bone meal, bone meal, and coniixist 

 were used as fertilizers in various amounts and combinations. The 

 beneficial effects of Icainit, alone and in combination with other ferti- 

 lizers, were clearly apparent. The favorable experience of other experi- 

 menters in the use of kainit as a preventive lor this disease is also cited. 

 The influence of kainit on the yield of cotton on different soils is 

 indicated by reference to experiments in Alal)ania, North Carolina, 

 South Carolina, and Mississippi. The physical conditions of the soil, 

 which prevent a proper circulation of soil water and thus probably 

 cause the disease under consideration, are discussed. 



The disease is liable to occur on many soils where the surface soil has huffcly been 

 washed away by rains; on very porous soils, whether sandy or lime lands; and on 

 poorly drained low ground. It is of more frequent occurrence in what is known as 

 the prairie section, but in years like the past one it occurs in the sandy ujilands as 

 well. f 



At my request Mr. Clark has j^repared the following statement of lauds in the 

 prairie section which, according to his observations, are subject to the disease. 



As regards the liability of dili'erent soils in my section to produce the disease called 

 yellow leaf blight in cotton : (1) If the surface soil is washed away, and the subsoil 

 of whitish color filled with particles of lime is exxiosed, the cotton will ahvays Idight. 

 (2) If the soil is black gunpowder or loose gray, cotton will blight more or less every 

 year. (3; Good, heavy, well-di-aiued clays seldom blight; in fact, last year was the 

 only time in 11 years that clay lands blighted with me, and it was not developed 

 even then as much as on other soils. 



Statements from various sources are cited to show how physical con- 

 ditions of the soil may be changed by the use of alkaline lyes, wood 

 ashes, muriate of potash, salt, humus, or kainit, or by cultivating or 

 rolling- the ground. 



Red leaf Might (pp. 31, 32). — "Eed rust" is a term frequently apiilied 

 to a reddened condition of the plant often seen on worn-out sandy land, 

 or uplands. It is a hastened maturity of the plant, induced by an 

 impoverished condition of the soil, showing a lack of nitrogen audpotash, 

 and probably also phosphoric acid. A red coloring- substance, known 

 as erythrophyll, is developed in the cell sap of the leaves. This can be 

 remedied by proj)er fertilizing-. 



A brief account is given of experiments to test the efficiency of 

 a preparation known as "Cerealite" in preventing this disease. The 

 results varied on different soils. 



Alabama College Station, Bulletin No. 37, March, 1892 (pp. 20). 



Tobacco, A. J. Bondueant (plate 1). — Practical directions for the 

 culture, curing, and marketing of tobacco, published with a view to 

 encouraging the growing of this crop more generally in the State. The 

 station intends to make experiments on tobacco. 



