CONTROL OF ROOT-KNOT. 



The yields on the plats were as follows: 



Table IV. — Yield of crops on four experimental plats at Monetla, S. C. 



67 



Season and year. 



Spring of 1906. 



Fall of 1906... 

 Spring of 1907. 

 Fall of 1907... 

 Spring of 1908. 

 Fall of 1908... 

 Spring of 1909. 



Crop. 



fOats busliels. 



\Rye do . . . 



(Velvet bean hay pounds. 



(Heggarweed hay do. .. 



Rye busliels. 



(Velvet bean hay on own plat pounds. 



(.Velvet bean hay sown late on beggarweed plat . . .do. . . 



Rye bushels'. 



I Velvet bean hay pounds. 



\Beggarweed hav do . . . 



Rye 2 : 



Actual yield. 



2 

 About 4,900 

 About 1,575 



10} 

 About 1,600 

 About 730 



101 

 About .3, 840 

 About 560 



Yield 

 per acre. 



5.42 



11,. 300 



5,000 



14 



3,700 



2.300 



14 



S..S.50 



1,770 



1 2()i bushels on U acres; therefore estimated at 10| bushels for that field, 0.752 acre. 

 - Cut before ripening to allow cotton to be planted. 



At the prices current at Monetta, S. C, for hay (about $18 per ton) 

 and grain ($3 per bushel in 1909 for seed, but here estimated at $1 per 

 bushel) the value of the hay produced in the three j'^ears amounted to 

 about $117 and that of the grain to $22.50, a total of $139.50, at the 

 rate per acre of $156, $30, and $186, respectively, an average of $62 

 per acre per year. While these yields are probably considerably more 

 than enough to pay for working the land and the rent of the land 

 besides, as well as payment for the seed, velvet beans having cost about 

 $4 per bushel, it must not be concluded that the experiment was a 

 failure in that the yields were not greater, for the primary purpose of 

 the rotation was to reduce the nematode infestation while improving 

 the land, or at least keeping it from deteriorating, and yet to make 

 enough money to pay for the labor and seed used. 



To test to what extent, if any, the land was improved was the pur- 

 pose of planting a plat of cotton at the north of the rotation plat. 

 Unfortunately, so many plants in each section were washed out by the 

 heavy rains that a very poor stand was obtained, ^^dth the result that 

 the yield per acre on the rotation and check plats could not be deter- 

 mined. The yields of the unginned cotton on the rotation plat were at 

 the rate of 1 pound of cotton for 6 plants of Triumph and 6.1 plants of 

 Cohunbia, while on the control plat to the north it took 6.9 and 7.25 

 plants, respectively, to make a pound. The Petcrkin plants to the 

 east were not half as large and vielded even less. 



The soil which at the beginning was very poor in humus, so poor 

 in fact that the rye would scarcely grow antl the oats did not pay for 

 cutting, gave a much better appearing field of rye the following 

 years. The foliage of the cotton on it had a good color, showing that 

 the leguminous crops had mcreased the nitrogeribus content of the 

 soil. 



217 



