BOTANICAL ABSTRACTS 



A monthly serial furnishing abstracts and citations of publications in the international field of 



botany in its broadest sense. 



UNDER THE DIRECTION OF 



THE BOARD OF CONTROL OF BOTANICAL ABSTRACTS, INC. 



Burton E. Livingston, Editor-in-Chief 

 The Johns Hopkins University, Baltimore, Maryland 



Vol. Ill FEBRUARY, 1920 No. 2 



ENTRIES 162-457 



AGRONOMY NEwT* 



C. V. Piper, Editor BO 



a At 



162. Richardson, A. E. V. Agriculture. America and Australia compared. Jour. 

 Dept. Agric. Victoria 17: 1-20. 1919. — A lecture, comparing agricultural methods in America 

 with those in Australia, before the Royal Agricultural Society at Melbourne, Dec, 1918. — 

 J.J. Skinner. 



163. Hayes, H. K., and E. C. Stakman. Rust resistance in timothy. Jour. Amer. Soc. 

 Agron. 11: 67-70. 1919.— See Bot. Absts. 3, Entry 107. 



164. Carrier, Lyman. A reason for the contradictory results in corn experiments. 

 Jour. Amer. Soc. Agron. 11: 106-113. 1919. 



165. Arny, A. C, and R. J. Garber. Field technic in determining yields of plots of 

 grain by the rod-row method. Jour. Amer. Soc. Agron. 11: 33^47. 1919. — Data is given (1) 

 on the precision obtained by determining yields by the removal of rod-rows from tenth-acre 

 plots as compared with harvesting and thrashing the entire plots, and (2) the comparative 

 labor requirements of determining yields by the two methods. It was found that nine rod- 

 rows removed from tenth-acre plots gave practically as accurate indications of the value of 

 fertilizer treatments as harvesting the product of the entire plots. Details of the methods 

 used are given together with a discussion of the literature. [See Bot. Absts. 3, Entry 

 2079.]— J. J. Skinner. 



166. Arny, A. C, and F. H. Steinmetz. Field technic in determining yields of experi- 

 mental plots by the square yard method. Jour. Amer. Soc. Agron. 11: 81-106. 1919. — It was 

 found that yields determined from 4 to 5 systematically distributed square yard areas re- 

 moved from plots one-tenth acre in size or less of relatively uniform crop may be confidently 

 substituted for those from the entire plot. A large mass of data is presented showing the 

 probable errors in plot work. — J. J. Skinner. 



167. Winters, R. Y. Community cotton improvement in North Carolina. Jour. Amer. 

 Soc. Agron. 11: 121-124. 1919. — In a test of 9 varieties of cotton seed the Cleveland variety 

 produced largest yield. — J. J. Skinner. 



168. Butler, O. The effect of environment on the loss of weight and germination of seed 

 potatoes during storage. Jour. Amer. Soc. Agron. 11:114-118. 1919. — See Bot. Absts. 3, 

 Entry 137. 



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BOTANICAL ABSTRACTS, VOL. Ill, NO. 2 



