SUDAN GRASS AND RELATED PLANTS. 



33 



first, fifth, and ninth holes may be used to sow three 28-inch rows. 

 Rows 36 to 48 inches apart are better suited to the corn planter. The 

 planter may also be used to sow 18-inch to 24-inch rows by straddling, 

 but this is slower and does not space the rows as uniformly as the drill. 

 The lister is best adapted to rows 40 or 42 inches apart. One may 

 use either a single-row lister, requiring three or four horses, or a 2-row 

 lister with six or eight horses. 



RATE OF SEEDING. 



IN DRILLED OR BROADCASTED SEEDINGS. 



Rates varying from 10 to 40 pounds per acre have been tested for 

 from one to four years at 24 widely distributed points. Table V 

 presents the yield reported to the Office of Forage-Crop Investiga- 

 tions from these stations. 



Table V. — Yields of cured hay from different rates cf seeding broadcast or in close drills. 



Location of test. 



Humid regions: 



Atheas, Ga 



Agricultural College, Miss. 



Do 



Baton Rouge, La 



Beeville, Tex 



Blaeksburg, Va 



College Park, Md 



Fayetteville, Ark 



Jackson, Tenn 



Knoxville, Tenn 



Lexington, Ky 



Lincoln, Nebf 



Madison, Wis 



St. Paul, Minn 



Average 



Dry regions (not irrigated): 



Davis, Calif 



Amarillo , Tex 



Chillicothe,Tex 



Lubbock, Tex 



Pecos, Tex 



Spur, Tex 



Hays, Kans 



Tribune , Kans 



Redfield.S. Dak 



Years of 

 test. 



1914 



1913 



1915 



1913 



1913. 



1913 to 1917 

 1913 to 1915. 



1913 



1913 to 1915. 



1913 



1915 



1915 to 1917. 



1915 



1913 



1913 to 1915.. 



1914 to 1917.. 

 1913tol919.. 

 1913tol91G.. 



1913 



1914 



1913tol918.. 

 1914andl915 

 1916 to 1919.. 



Average ' . 



Dry regions (irrigated): 



Bard, Calif 



Davis, Calif 



1914 and 1915 

 1914 to 1916.. 



Average. 



Plats. 



Acres. 



0.05 

 .10 

 .05 



.025 



.05 



.025 



.015 



Repli- 

 ca- 

 tions. 



1 or 2 

 2 

 2 



.05 

 .05 



Hay yields when seeded at following 

 rates per acre. 



10 

 pounds. 



15 



pounds. 



Tons. 



Tons. 





0.42 





1.93 



3.12 



4.09 





2.05 





4.84 





1.46 





3.32 





1.12 



2.32 



1.90 





2.94 



6.72 







3.40 



3.37 



3.24 





4.25 



2.91 



20 

 pounds. 



Tons. 

 0.91 

 2.06 

 4.34 

 1.73 

 4.84 

 1.62 

 3.33 

 .87 

 2.14 

 3.26 

 7.95 



3.11 



3.97 



2.95 



5.04 

 2.30 

 1.94 



2.48 

 3.62 

 2.53 



2.66 

 8.02 



5.34 



4.99 

 2.51 

 2.28 

 3.18 

 1.25 

 5.14 

 2.50 

 4.22 

 2.58 



4.31 

 2.18 

 2.24 

 3.43 

 1.89 

 5.02 

 2.43 

 3.95 

 2.49 



3.37 



3.32 



3.02 

 6.74 



2.68 



7.28 



25 to 30 

 pounds. 



Tons. 

 1.63 

 2.45 

 4.22 

 2.20 

 5.03 

 1.58 

 3.41 

 .95 

 1.97 

 3.29 

 8.85 

 3.30 

 3.06 

 4.28 



35 to 40 

 pounds. 



Tons. 



2.50 

 3.56 



3.02 



3.91 

 2.49 

 2.23 

 3.30 

 2.20 

 5.02 

 2.40 

 3.28 

 2.71 



3.19 



3.02 

 5.90 



5.01 

 2.00 

 3.62 

 .88 

 2.01 

 2.69 



3.60 

 2.42 

 4.05 



2.87 



4.37 



2.13 

 3.18 

 2.58 

 5.04 

 2.45 

 2.81 



3.22 



2.76 

 6.16 



1 Only the stations where data are presented for all rates of seeding of 15 pounds or more are included 

 in the averages. 



The yields reported in Table V, as in the width-of-row tests, show 

 no decided superiority for any rate of seeding. Sudan grass tillers 

 so freely in thin stands that the final number of stems per square 

 53321°— 21— Bull. 981 5 



