426 



Bulletin 267. 



Comparing the averages we find that the largest yields were obtained 

 where 12 pounds of seed per acre were used, 8 pounds giving the next 

 highest yield. We must, however, take into consideration the fact that, 

 at the time of sowing, conditions were especially favorable for the ger- 

 mination of mangel seed and that a high grade of seed was used, thus 

 the smaller amount was sufficient to produce a good stand. With 

 unfavorable conditions and a poor quality of seed the larger amount of 

 seed would be more economical in the end, since a good stand is essen- 

 tial to the economical production of mangels. Sixteen pounds per acre 

 is evidently too large a quantity to use. Besides the extra cost of seed 

 the large number of plants increases the work of thinning. 



The use of buckwheat in seeding. Since mangels are relatively slow 

 in coming up it is often desirable to cultivate before the plants show 

 sufficiently to permit the rows to be followed, especially if the land is 

 weedy or shows a tendency to bake. This difficulty may be obviated 

 by mixing a small amount of buckwheat with the mangel seed. The 

 quantity of buckwheat should be about one-tenth the volume of the 

 mangel seed. The buckwheat should be pulled as soon as possible 

 after the mangels are up so as not to interfere with the growth of the 

 young plants. 



Rate of seeding of Rutabagas. The seed was sown in drills at the rates 

 of 1 , 2 and 3 pounds per acre respectively. On the plats where i pound 

 per acre was sown there was not a sufficient number of plants to give 

 a good stand, while on those receiving 3 pounds there was a large excess. 



The yields and number of plants are given in the following table: 



TABLE VI 

 Showing Yields per Acre, Number of Roots, and Weight of Tops 



Plat No. 



1527 



1528 



1529 



1530 



1531 



1532 



1533 



^534 



Average 

 Average 

 Average 



Amount of 



seed 



per acre, 



lbs. 



I 

 2 



3 

 I 



I 



2 



3 

 I 



1 

 2 

 3 



Yield 



per acre, 



tons 



25.60 

 27.08 

 24. 64 

 22 . 24 

 22 . 00 

 22 . 08 

 22.56 

 20. 24 



22 . 52 



24.58 



23 . 60 



No. of 



roots, 



thousands 



16. 

 20 . 

 20. 

 17- 

 17- 

 18. 



IQ. 



15- 



16. 7 



193 

 20. I 



Weight 



of tops, 



tons 



44 

 96 

 40 

 92 

 04 

 52 

 92 

 32 



18 



74 

 16 



