Canadian Forestrij Journal, Juhj, 1918 



179: 



WEEDS KILLED BY PAPER 



II. E. Ho\ve, who conducts Iho 

 chemical service department of The 

 Scicniijic American, lei Is us in tlial 

 paper that in the tropical countries 

 where sugar-cane nourishes, weeds 

 spring \i]) overnight in numljers and 

 strength that will choke off any croj) 

 with ease. The expense of keeping 

 them down is by no means the 

 smallest item of the cost of produc- 

 tion, and their presence or absence 

 often makes the difference between 

 a profitable and an un])roritable year. 

 Mr. C. F. Eckart, of a Hawaiian sugar 

 company, therefore began experiments 

 looking to weed-controL Says^Mr. 

 Howe : 



"Weeds between the cane rows 

 could be controlled by spraying, after 

 which followed a demonstration that 

 the weeds could be smothered by 

 strips of paper, asphalt impregnated 

 to withstand weather and handling. 



"Knowing that cane shoots are 

 tightly rolled up, sharp-pointed and 

 spear-like, Mr. Eckart conceived tlie 

 idea of using paper over the cane 

 rows, being careful to have the paper 

 of the proper construction to hold 

 the weeds beneath, while the cane, by 

 gentle pressure, could puncture the 

 covering. Considerable acreages have 

 been under experiment and several 

 interesting developments have taken 

 place. 



'The paper in yard widths is placed 

 over the rows atid kept there by 

 bamboo pegs, stones, and field litter. 

 As the cane shoots come up those 

 striking the paper at or near right 

 angles puncture the covering and 

 grow vigorously. The other shoots 

 make tentlike elevations, at which 

 points the paper is slit after five or 

 six weeks, during which time the cane 

 does not suffer, although the less 

 hardv weeds are exterminated!" 



A Great Book on Our Wild 

 Animals at a Bargain Price! 



In the idle moments of your sum- 

 mer outing there is opportunity for 

 burnishing up your half-forgotten 

 knowledge of our Canadian wild 

 animals and for learning a hundred 

 things you never suspected before. 



We have such a book packaged 

 ready for you. In the bookstores, 

 it sells commonly at $1.50." (The 

 illustration above shows the paper- 

 bound edition priced at one dollar). 

 The Journal has arranged for a 

 limited edition of leather-bound 

 copies to sell to our readers for 

 $1.00. 



The book contains 265 pages and 

 61 full-page illustrations n color of 

 the North Amer can wild animals 

 in i heir native haunts. 



The text is by Chas. K. Reed, 

 who has won much fame through 

 various nature books, and the 

 plates are in natural colors by 

 H. P. Harvey. 



The book is shaped conveniently 

 for your pocket. While authorita- 

 tative in matter, it is brightly 

 written and will pay high dividends 

 in helpful and interesting reading. 



Enclose a dollar bill to the 

 Canadian Forestry Journal, 206 

 Booth Building, Ottawa, marking 

 your name very plainly on the 

 attached coupon: 



CHARLES L. PACK HONORED Canadian Forestry Journal, Ottawa. 



Mr. Charles L. Pack, President of U^ ^j^^^.^ f^,^ ^^F-if-^ Pfr ^/^l!^^^ 

 the American Forestry Association, ^ '"' 



and head of the National War Gar- 

 den (commission of the Fnited States, 

 has just had the degree of Doctor of 

 Laws conferred uj^on him by Trinity 

 College.- 



Guide' in leather binding to the follow- 

 ing address. One dollar is enclosed. 



Name 



Address. 



