SOILS AND FERTILIZERS 511 



bage, dandelion, Swedish turnip, pepper, peanut, English or flat 

 turnip, upland cress (pepper grass), martynia, rhubarb, common, 

 pea, pumpkin, summer squash (scalloped), golden wax bean, red 

 valentine bean, horticultural pole bean, bush Lima bean, lentil, 

 Hubbard squash, saltbush, hemp, tobacco, sorghum, alfalfa, clover 

 (red, white, crimson, and alsike), barley, emmer, wheat, oats, tim- 

 othy, Kentucky bluegrass, Canada pea, Cuthbert raspberry, goose- 

 berry, currant (White Dutch), orange, quince, cherry, Burbank 

 Japan plum, American linden, American elm, sweet alyssum, mi- 

 gnonette, nasturtium, balsam, pansy, poppy, and sweet pea. The 

 crops were not only greater in many cases, but they were ready to be 

 marketed much earlier where the soil had been limed. Tobacco not 

 only made a better growth when limed, but the ash was much lighter 

 in color. 



So far as concerns potatoes, the total crop is frequently not 

 materially increased by liming, but the percentage of tubers of mer- 

 chantable size is usually increased if the soil is quite acid, thus add- 

 ing greatly to the total value of the crop. On account of the fact 

 that liming increases the injury caused by potato scab care must be 

 taken to treat the seed tubers with corrosive sublimate solution, 

 formalin, or other fungicide capable of destroy ingmost of the germa 

 of the disease before the tubers are planted. Furthermore, lime 

 should be applied after the removal of the potato crop, except in case 

 of land that has not been previously limed. 



Plants But Little Benefited by Liming. There are many plants 

 which, when supplied with sufficient potash, phosphoric acid, and 

 nitrogen in immediately assimilable combinations, such as nitrate of 

 soda and nitrate of potash, show but little if any benefit from liming 

 even upon quite acid soils. Among these plants are the following: 

 Indian corn, spurry, rye, carrot, chicory, Rhode Island bent, and 

 redtop. Upon a very acid soil some of these plants might show 

 greater benefit from liming provided the nitrogen were supplied in 

 sulphate of ammonia, blood, tankage, fish, cotton-seed meal, plant 

 roots, or other nitrogenous substances, the decomposition and nitri- 

 fication of which would be hastened by the presence of lime. 



Plants Usually or Frequently^ Injured by Liming. Among the 

 plants which have shown slight injury from liming under certain 

 conditions and which may under other circumstances be helped by 

 it are the following: Cotton, tomato, cowpea, zinnia, phlox (Drum- 

 mondi), Concord grape, peach, apple, and pear. The plants that 

 have quite persistently shown marked injury from liming are: Lu- 

 pine, common sorrel, radish, velvet bean, flax, castor bean, black- 

 berry, black-cap raspberry, cranberry, Norway spruce, and American 

 white birch. Extensive European tests have also shown that lupine 

 is injured by liming. Lime, though directly injurious to common 

 sheep sorrel, aids in ridding land of it more by virtue of encouraging 

 other plants than on account of the direct injury which it causes, it 

 is claimed that the chestnut, azalea, and rhododendron are injured 

 by lime, though they have not yet been tested at the Rhode Island 

 Station. 



