BOTANICAL ABSTRACTS 



A monthly serial furniBhinc 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. 



J. R. Schramm, Editor-in-Chief 

 Cornell University, Ithaca, New York 



Vol. IX AUGUST, 1921 ^^^'< No. 1 



ENTRIES 1-576 



- -.sTanic'^'- 



AGRONOMY 



C. V. Piper, Editor 

 Mary R. Burr, Assistant Editor 



(See also in this issue Entries 104, HI, 113, 115, 230, 257, 272, 276, 277, 279, 284, 285, 426, 

 427, 436, 440, 441, 450, 452, 481, 483, 486, 524, 525, 528, 530, 532, 533, 540, 546, 552, 555, 562, 



568, 569, 570, 574) 



1. Anonymous. El abrojo grande. [Cocklebur] Defensa Agric. [Uruguay] 1: 10-12. 

 1920. — Xanthium sp. as a weed. — John A. Stevenson. 



2. Anonymous. El maiz para semilla. Ventajes de la seleccion de las espigas. [Seed 

 corn. Advantages of selecting ears.] Defensa Agric. [Uruguay] 1 : 295-300. 10 Jig. 1920. 



3. Anonymous. Field experiments, 1920. Jour. Dept. Agric. Ireland 21: 53-68. 1921. — 

 Average results are presented of: Variety tests with barley, potatoes, mangels, oats, turnips, 

 and wheat; fertilizer tests with potatoes, mangels, oats, and wheat; cultural tests with pota- 

 toes; and weed-spraying tests in oats. Comparisons are made with previous year or years. — 

 Donald Folsom. 



4. Anonymous. La papa y su cultivo. [Potato culture.] Defensa Agric. [Uruguay] 1: 

 2-6. 1920. 



5. Anonymous. Potatoes.^ — Varieties immune from black scab or wart disease. Jour. 

 Dept. Agric. Ireland 21: lOS-112. 1921. — Some immune varieties are satisfactory in regard 

 to yield. Yield rate and immunity of a number of varieties are given. — Donald Folsom. 



0. Anonymous. Report of the work of the seed propagation division for 1920. Jour. Dept. 

 Agric. Ireland 21: 38-52. Fig. I-4. 1921. — Results of pure-line culture and variety tests of 

 wheat, oats, barley, and flax are described. Covered smut (Ustilago hordei) of barley was 

 eliminated by steeping the seed for 10 minutes in a 5 per cent solution of formalin. — Donald 

 Folsom. 



7. Anonymous. The non-setting of the uba seed. South African Sugar Jour. 5: 131. 1921. — 

 Success with cross pollinating flowers of sugar cane and raising of seed in Natal and Zululand 

 cannot be expected with our present knowledge as the anthers ap'pear to have lost the power 

 to open. The pollen is remarkably scanty in the anthers; such pollen grains as are present 

 are irregular in size and devoid of starch whereas normal cane pollen is spherical and rich in 

 starch. From these latter facts the conclusion is drawn that the pollen is sterile. — E. K. 

 Tisdale. 



BOTANICAL ABSTRACTS, VOL. IX, NO. 1 



