12 



CROSSBREEDING CORN. 



It will be seen that by this order the original or 1908 seed of the two 

 parent varieties is planted on either side of the crossed seed, and 

 that adjoining these two rows is a row from the seed of each parent 

 groA\Ti in 1909. In all four of the tests the varieties were planted in 

 the same relative order. 



EQUALITY OF CONDITIONS FOR GROWTH AND PRODUCTIVENESS. 



Care was taken to so locate the rows that those to be compared 

 would have equal facihties for growth and productiveness. At each 

 location and for each test rows of uniform width were marked off 

 both ways. Five kernels were planted in each hiU and the stand 

 thinned to two stalks to the hill. Practically a perfect stand of 

 plants was obtained for each row of each test. Each variety and 

 first-generation cross was thus represented by the same number of 

 plants, occupying the same number of square feet of adjacent, appar- 

 ently similar, soil. 



PRESENTATION OF RESULTS IN MARYLAND. 

 FIELD RECORDS IN DETAIL. 



Table II presents full details of both the original and the duplicate 

 test at Derwood and of like tests at Pike Crossing. The order of 

 occurrence of the varieties in the table is the same as in the test plats. 



Table II. — Tests of ■parent varieties and first-generation crosses of corn. 



At Derwood, Md. i 



218 



Length of row 164 feet. 



