PLANT RESPONSES TO INSECTICIDES IN THE SOIL 13 



a presentation of the results on a varietal basis. Therefore, for 

 the purpose of this circular, the data are presented in most tables 

 by kinds or species only. Instances in which specific varieties 

 appeared notably different from others are mentioned in discuss- 

 ing the results. 



The varieties of the several crops shown in eight of the tables 

 were as follows : 



In tables 1 and 2. — Barley, Poland; lima beans, Henderson Bush, Ford- 

 hook 242, and Fordhook; snap beans, Blue Lake, Stringless Black Valentine, 

 and Tendergreen; beet, Detroit Dark Red; broccoli, Italian Green Sprouting; 

 cabbage, Early Jersey Wakefield and Golden Acre; sweet corn, Country Gen- 

 tleman and Golden Cross Bantam; cotton, Acala P-18; cucumber, A & C; 

 muskmelon, Hale Best and Honey Dew; pumpkin, Connecticut Field; summer 

 squash, Yellow Summer Crookneck; winter squash, Warted Hubbard; tomato, 

 Marglobe and Rutgers; spinach, Long Standing Bloomsdale; turnip, Purple 

 Top Globe ; watermelon, Florida Favorite and Tom Watson ; potato, Katahdin. 



In table 4. — Snap beans, a breeding line later released as Topcrop, Blue 

 Lake, Stringless Black Valentine; broccoli, Italian Green Sprouting; cab- 

 bage, Golden Acre; sweet corn, Country Gentleman and Golden Cross Ban- 

 tam; cotton, Acala P-18; pea, Thomas Laxton; peanut, Virginia Runner; 

 pumpkin, Cushaw and Mammoth (actually a squash) ; squash, Yellow Summer 

 Crookneck; tomato, Rutgers and Marglobe; turnip, Purple Top Globe. 



In table 5. — Barley, Poland; lima bean, Fordhook and Sieva; snap bean, 

 Tendergreen and Kentucky Wonder ; beet, Detroit Dark Red ; cabbage, Golden 

 Acre; sweet corn, Country Gentleman and Golden Cross Bantam; cotton, 

 Acala P-18; cucumber, A & C; muskmelon, Hale Best and Honey Dew; 

 pumpkin, Connecticut Field; summer squash, Yellow Summer Crookneck; 

 winter squash, Warted Hubbard; tomato, Marglobe; watermelon, Florida 

 Favorite and Tom Watson. 



In table 6. — Lima bean, Henderson Bush and Fordhook; snap bean, Ten- 

 dergreen; beet, Detroit Dark Red; cabbage, Golden Acre; sweet corn, Golden 

 Cross Bantam and Country Gentleman; cotton, Acala P-18; cucumber, A & 

 C; muskmelon, Hale Best and Honey Dew; pumpkin, Connecticut Field; 

 squash, Yellow Summer Crookneck; tomato, Marglobe; watermelon, Florida 

 Favorite and Tom Watson. 



In table 7. — Snap bean, Kentucky Wonder; sweet corn, Country Gentle- 

 man; summer squash, Yellow Summer Crookneck; winter squash, Warted 

 Hubbard; tomato, Marglobe; pumpkin, Connecticut Field; watermelon, Flor- 

 ida Favorite and Tom Watson. 



In tables 8 and 9. — Lima bean, Jackson Wonder, King of the Garden, 

 Fordhook, Fordhook 242, Florida Butter Speckled, Henderson Bush, Peerless; 

 snap bean, Stringless Black Valentine; cucumber, A & C, Chicago Pickling, 

 National Pickling, Clark Special, Improved Long Green, Cubit, Straight 

 Eight, Marketer; muskmelon, Powdery Mildew Resistant No. 5 and No. 45; 

 peas, Perfection, Laxtonian, Pride, Alderman, Laxton Progress, Commando, 

 Hundredfold, Thomas Laxton; peppers, California Wonder, Early California 

 Wonder, Ruby King, World Beater, Pimiento; rye, Abruzzi, Rosen, Balbo; 

 squash, Acorn ; tomato, Marglobe and Rutgers. 



Analysis of Data 



When several species had been grown simultaneously within 

 plots the data for each species were analyzed separately, treating 

 each bench as two randomized blocks at a single location. Four 

 soils in as many benches were involved in a large number of the 

 tests planted or harvested on a single day. There were rarely any 

 replications of soils with a given species in any one test, but 

 most crops were grown on each of two benches of a given soil at 

 some time during the course of this series of tests. 



It is neither necessary nor practicable to present here the 

 results of each of the hundreds of separate variance analyses 



