1910] FIELD CROPS. 133 



a list of Perisporlacese, representing collections from different parts of South 

 Africa, Indicating a number of whal arc claimed to be new species. 



Urcdinales of the Andes, based on collections by Dr. and Mrs. Rose, .1. 0. 

 Abthttb (not. (;</:.. 65 (1918), No. 5, pp. \60-474). — The present contrlbntlon to 

 the fungi of the Amies comprises mainly material Becnred by Dr, and Mrs. J. n. 

 Rose in i!»i (, Including the now genus Cleptomyces ; the now species UropywU 

 gititensia, Sphenosporea berberidis, Puccinia roseana, P. nlcotiana, P. oonisti, 

 /'. cuzcoensis, P. unicolor, and JEcidium enceliw; also the now combinations 

 C. lagerheimianus, P. bambusarum, and /'. mogiphartis. 



The allies of Selaginella rupestris in the southeastern United States, G. P. 

 Van Kskttim: (/ . 8. Nat. Mus., Contrib. Nat. Herbarium, 20 (1918), pt. 5, pp. 

 V1I+159-178, pis. 8, figs. 8). 



FIELD CROPS. 



Farm practices that increase crop yields in Kentucky and Tennessee, J. IT. 

 Akm.i.d (U. S. Dept. Agr., Farmers' Bui. 981 (1918), pp. 38. figs. 12 ) .—Measures 

 are described for building up run-down land in the .imestone and mountain 

 districts south of the Ohio River, embracing Kentucky, Tennessee, southern 

 West Virginia, and the western and more mountainous parts of Virginia and 

 North Carolina. The establishment of suitable crop rotation systems, including 

 legumes and grasses, and the judicious use of manure, crop refuse, lime, and 

 commercial fertilizers, is recommended. Good farm practices employed on sev- 

 eral rejuvenated farms are outlined, and some practical suggestions made on 

 farming in this region. 



Farm practices that increase crop yields in the Gulf Coast region, M. A. 

 Crosby (U. S. Drpt. Agr.. Farmer*' Bill. 986 (1918), pp. 28, figs. 10). — Changes 

 In the cropping systems of the Gulf Coast region of Alabama, Mississippi, and 

 West Florida are recommended, consisting chiefly in the introduction of one 

 or more legumes. The relative value for soil improvement of velvet beans, 

 cowpeas, soy beans, bur clover, vetch, peanuts, crimson clover, beggar weed, 

 Lespedeza, oats, and rye is briefly discussed. Intercropping corn and cotton 

 with a legume and the use of commercial fertilizers and winter cover crops 

 as moans of increasing soil fertility are described. Crop rotations for various 

 systems of farming are outlined. 



Crop systems for Arkansas, A. D. McNaib (U. S. Dept. Agr., Farmers' Bui. 

 1000 (ID is), pp. 2'f, fig. 1). — Crop systems said to make for increased food pro- 

 duction and increased efficiency in both man and horse labor are described 

 which are deemed applicable to all of Arkansas except the northwestern part, 

 to northern Louisiana, northeastern Texas, southeastern Oklahoma, western 

 Tennessee, and the northern half of Mississippi. The crop acreages for each 

 cropping system suggested are calculated on the basis of two men and a team 

 and for light, medium, and heavy soils. It is stated that two men with a 

 team, who under a system of cotton and corn could farm but 33 acres of land, 

 can handle 50 acres and raise 62 acres of crops under a system providing a 

 four-year rotation of cotton with a winter cover crop, cowpeas. oats, or wheat 

 followed by cowpeas, and corn. 



[Tests with field crops and vegetables at the Rhode Island Station] (Bui. 

 R. 1. Slate Col., 1.1 (1918), No. .',. pp. 36, 37. 38, 39, 40).— Alfalfa and sweet and 

 mammoth clover survived the winter when sown as a winter cover crop after 

 early potatoes, while winter vetch again died out. In a mixture of crimson 

 clover, winter vetch, and sweet clover sown as a cover crop in corn, sweet clover 

 alone survived the winter. Corn after a legume cover crop produced 51 bu. per 

 acre, after rye as a cover crop 46 bu., and with no cover crop 40 bu. 



