1710 



ENCYCLOPEDIA OF PRACTICAL HORTICULTURE 



Potatoes— Production and Talue by Biyisions— 1909 and 1899 





Production (bushels) 



Value 



DIVISION OR STATE 



1899 



Increase 



1909 



1899 



Increase 





Amount 



Percent 



Amount 



Per cent 



tJmted States 



273,318,167 



115,876,798 



42 4 



$166,423,910 



$98,380,110 



$68,043,800 



69 2 



Geograpluc Divisions. 

 New England 

 Middle Atlantic 

 East North Central 

 West North Central 

 South Atlantic 

 East South Central 

 West South Central 

 Mountain 

 Pacific 



23,466,222 



64,372,759 



80,988,131 



60,812,316 



12,150,748 



5,051,854 



4,867,562 



9,046,736 



12,561,839 



17,779,755 



14,022,977 



30,618,646 



11,255,235 



9,951,882 



4,764,306 



2,546,325 



15.185,373 



9,752,299 



75 8 

 21 8 

 37 8 

 18 5 

 81 9 

 94 3 

 52 3 

 167 9 

 77 6 



17,456,938 



37,292,509 



37.427,211 



30,088,015 



14,091,735 



5,940,784 



5,439,504 



8,715,380 



9,971,834 



10,092,191 



26,608,645 



25,501,069 



15,524,932 



6,691,072 



2,647,924 



2,428,721 



3,725,046 



6,160,510 



7,364,747 



10,683,864 



11,926,142 



14,663,083 



7,400,663 



3,292,860 



3,010,783 



4,990,334 



4,811,324 



73 



40 1 



46 8 



93 8 



110 6 



124 4 



124 



134 



93 2 



Potato, Chinese. See Sweet Potato, 

 or Yam. 



POTATO DISEASES 



Aerial Potato. See JtMzoctoma, this 

 section. 



Arsenical Poisoning 



Spotting and dying of the foliage is 

 frequently caused by the application of 

 Paris green or other arsenical poisons. 

 It is frequently mistaken for blight and 

 injures the plant in proportion as it re- 

 duces the amount of green surface. The 

 injured foliage also offers favorable op- 

 portunities for the development and 

 spread of the early blight. 



Control 



Paris green should always be mixed 

 with lime, whether applied dry or in 

 water. It can be applied with Bordeaux 

 mixture without additional lime. Ar- 

 senate of lead can also be applied with 

 Bordeaux mixture. The latter spreads 

 and sticks better than Paris green, but 

 acts more slowly. 



New Jersey Agrucultural Experiment Station 

 Circular 33 



Bacterial Blight. See Blade-Leg, this 

 section. 



Bacterial Rot. See Black-Leg, this 

 section. 



Black-Leg 



BamUus phytophthorus 



Bacillus solanisaprus 



F. D. Bailey 



Black-leg, or black stalk rot, as it is 



frequently called, is a bacterial disease 



of the potato which has only recently 



become widely distributed in this coun- 

 try. It is quite probable that the disease 

 was present in certain potato-raising lo- 

 calities before 1906, but that date seems 

 to furnish the first record of its occur- 

 ence. 



The disease has been known in Elurope 

 for a longer period and was recorded in 

 Canada in 1900. 



Symptoms 



An examination of plants affected with 

 black-leg will leave little chance for con- 

 fusing this disease with other described 

 potato maladies. The stem and tubers 

 are the parts attacked. The inky black 

 discoloration of the stem at the surface 

 of the ground, from which the name 

 originated, is the most constant charac- 

 ter associated with the disease. This 

 blackened area starts at the point where 

 the stem leaves the seed potato; it ex- 

 tends up to the surface of the soil and 

 in some cases may follow the stem sev- 

 eral inches higher. The illustration (Fig. 

 1) shows the result of an artificial inocu- 

 lation in which the organism followed 

 the stem up to the third leaf. 



One who is familiar with this disease 

 can detect its appearance before the 

 blackened area appears on the stem. The 

 whole plant is slightly below normal size, 

 lighter in color, with stems, petioles and 

 leaf blades erect. This condition becomes 

 more acute until finally the plant rots 

 off and dies. The seed tuber is generally 

 affected and in most cases decay starts 

 in it before the plant shows signs of 

 disease. 



