No. 1, July, 1920] AGRONOM1 17 



form absorptive hairs. The development of the young fruit is described. Attempts to pro- 

 duce peanuts in the air yielded no definite; results. Where the young fruits were allowed 

 first to come in contact with the soil and were then exposed to the sir, they continued to 

 develop to a certain extent and turned green. A detailed bibliography is given. [See also 

 Bot. Absts. 1, Entry 999.] — John W. HarsKberger. 



140. Werner, II. O. Seed potato production in Western Nebraska. Potato Mag. 2: 

 10-11. 4 Jig. 1919. 



141. Werner, H. O. Potato experiments, 1917 and 1918. North Dakota Agric. Exp. 

 Sta. Bull. 129. 22 p. Fig. 1-2. 1919.— Varieties Early Ohio, Irish Cobbler, Rural New 

 Yorker, Green Mountain and Burbank were grown at 7 points in North Dakota for 1917- 

 1918 and comparative yields secured. Yield data on 5 varieties were obtained at Fargo, North 

 Dakota, with and without manure. Using mainly Early Ohio, yield data were obtained at 

 Fargo when treatment dealt with position of buds on tuber, number of buds per piece of seed, 

 method of cutting tubers, rapidity of sprout emergence and stalks per plant, date of har- 

 vesting, planting distance, treatment of seed tubers, spraying, hilling and cultivating. 

 Weather data are given. No summary. — L. R. Waldron. 



142. Wert, G. [Rev. of: Azze. Les periodes critiques de la vegetation et les phenomenes 

 mSteorologiques. (Critical periods of vegetation in relation to meteorological phenomena.) 

 Paper read before Acad. Agric] Compt. Rend. Acad. Agric. France 5:828-834. 1919. — 

 This is a review of a paper presented by Azze before the Academie Agricole. It discusses 

 what is meant by the term 'critical period,' these periods being occasions that are harmful or 

 entirely destructive to the crop under study because of some meteorological condition such as 

 excess or lack of rainfall, too great heat, or frost, at times which may have a serious influence 

 on the development of the crop. Thus a lack of rainfall at the time that wheat is beginning 

 to head, though sufficient before or after that date, may seriously compromise the size of the 

 crop. Description is given of the preparation of maps, which show for each individual 

 crop, the critical periods for production in the different parts of the country. — E. A. Bessey. 



143. Westgate, J. M., F. G. Krauss, C. A. Sahr, and R. A. Goff. [Report of work in 

 agronomy.] Hawaii Agric. Exp. Sta. Rept. 1918:11, 12, 26-35, 45-55. PL 6, 11. 1919. — 

 Investigations have shown that a variety of corn introduced from Guam is very resistant 

 to the attacks of the corn leaf hopper (Peregrinus maidis), much higher yields being obtained 

 than from any of the strains introduced from the mainland. Plantings of edible canna (Carina 

 edulis) yielded at the rate of over 40 tons of tubers per acre. The tubers constitute a valu- 

 able source of starch and also serve as pig feed in normal times and as an emergency human 

 ration when necessary. Pigeon peas (Cajamis indicus) have given exceptional results as a 

 drought-resistant leguminous crop, valuable both for seed and forage. A new strain of red 

 kidney bean has been developed under the name New Era Copper Kidney, which has yielded 

 40 per cent more under field conditions than any other of the numerous varieties under test. 

 The Hamakua Hybrid potato in the blight resistance tests outyielded any of the imported 

 or other local varieties at the Glenwood substation. — J . M. Westgate. 



144. Wheeler, W. A. Seed trade with European countries. Seed World 6 1 : 32-36. 1919. 



145. Wheeler, W. A. Some aspects of seed control. Seed World 6 1 : 30-31. 1919. — A 

 discussion is given of the objects of seed legislation, and the faults of the disclaimer clause. 

 Uniform stock records should be kept of all lots of seed handled showing source, origin, 

 description and quality of the stock. — M. T. Mtmn. 



146. Wheeler, W. A., and G. C. Edler. Some effects of war upon the seed industry 

 of the United States. U. S. Dept, Agric. Yearbook 1918: 195-215. 1919.— See Bot. Absts. 4, 

 Entrv 975. 



BOTAN1C.VL ABSTBACTS. VOL. IV, NO. 1 



