136 EXPERIMENT STATION RECORD. 



Caravonica cotton iZtHchr. I'nrb. Imlux., d (190U), \o. J!), pp. >D'f-2!>U, figs. 

 10). — All article comparing different varieties of cotton but giving sjiecial 

 attention to the Caravonica varieties of which actual lint and manufactured 

 yarn are given for illustrative purposes. The observations on which the article 

 is based were made in the German African colonies. 



The results on the flax experiment farms of Silesia in 1908 (Ztuchr. Landtc. 

 Kaiumrr Hrlth.sirn. IS (1!J0!)}. Xo. .',(). pp. I lUl-liOi). — The gi-oimd for these 

 experiments was plowed deeply in fall or in winter and fertilized at the rate 

 of OfHJ kg. of kaiiiit i)er hectare (abotit .>34 lbs. ijer acre) and in the spring 

 before seeding with 4^(0 kg. of sni>erpliosi)hate. In addition to this the land 

 received 10<J kg. per hectare of either nitrate of soda or sulphate of ammonia. 



The yields were in nearly all cases very largelj' increased through the use of 

 nitrogenous fertilizers, and these were much more effective on the level low- 

 lands than on mountain soils. Sulphate of ammonia was apparently more 

 effective in increasing the yield of fiber flax than nitrate of soda, but with 

 reference to seed production the results were practically the same. 



The so-called white wild oats and what they are, X. Ckiddle (Ottawa Nat., 

 23 {1D0'.)\, Xo. 7. pp. l.n, 128).— The white wild oats, which resembles in its 

 seed form the wild species Arena fatua, is regarded by the author as a sport or 

 a probable form of atavism active in all or nearly all varieties of both tyi^es, 

 A. sativa and A. orientalis. It is stated that these so-called white wild oats 

 clo.sely re.semble in the seed form the variety from which they were selected. 

 This supposed wild oat, however, is always awned with a strong twisted black 

 and white awn and has also the horseshoe .shaped biise of .1. fatua. "Thus it 

 resembles in color, shai)e, and size the variety from which it originated and in 

 other respects the wild species, excepting that the basal hairs are absent or 

 nearly so."' Specimens of these white wild oats were found in Banner, New 

 Market, Abundance, Storm King, and Bumper King. The greater number of 

 si)e<inieiis was found in New Market and Storm King. 



The field pea in Wisconsin, K. A. Moore and E. J. Delwiche (Wisconsin Hta. 

 Bui. 178, pp. 3-12, figs. 4). — This bulletin presents notes on the adaptability 

 of field and caiming i)eas to Wisconsin conditions with directions as to planting, 

 cultivation, rotation, liMrvesting, and thrashing. The value of peas as fofxl and 

 as soil improvers is discussed. 



A variety test begun in 11X)8 on a heavy red clay soil at Ashland without 

 the addition of any fertilizers gave for plats ranging in size from 1/80 to 7/10 

 acre the following yields per acre: Golden Vine 18.66 bu.. Potter 23.66 bu.. 

 White Marrowfat 20..33 bu., Bruce Blue Prussian 16.66 bu., Canadian Beauty 

 23 bu., f:arly Britain 21 bu., Scotch 20 bu., Green 21.33 bu„ and Common Yel- 

 low 24.60 bu. These results are regarded as confirming the value of such soil 

 for peas. 



Some seed potato questions in 1909, T. C. Johnson ( Virginia Truck Hta. Bui. 

 3, pp. ol-o-J). — A i)reliniinary report on this subject has already been noted 

 (K. S. R., 21, p. -4.30). 



The present bulletin describes the method of producing seed potatoes under 

 Maine conditions for the purpose of arriving at a iwssible explanation of the 

 failure in tidewater Virginia, in 1909, of the potato crop grown from Maine 

 seed. No definite conclusions, however, are reached. Jn recent years, Irish 

 Cobbler seed jK^tatoes from .Maine and certain other States have been use<l vA'ith 

 gfx»d results until 19<J9, when losses from rotting of the crop produced were 

 siistainefl. It is stated that the custom of harvesting the crop while immature, 

 together with climatic conditions in Maine, tends to reduce the danger from late 

 blight ( Phytophthora infestans) to the minimum. Fro.st in Maine, early in 

 September, 1909, checked this disease. 



