Field Experiments with Fertilizers. 



317 



The field should be plowed before the plats are laid out. Then use good, 

 substantial stakes at the corners of the plats, and mark them in such a way that 

 the plats will not become mixed, thus leading to confusion. It would be well 

 to leave a space of 4 ft. between each two plats in order to be sure that the plants 

 on one plat cannot feed on the fertilizer each side of it. 



Do not lay out the plats on land that has been manured within one year. If 

 you carried on fertilizer experiments last year, do not use the same set of plats 

 again this season. 



The following diagram shows the arrangement of the plats, with the spaces 

 between. Each plat contains 1-20 of an acre. 



1. Plat K. 



15 lbs. Muriate 



Potash 



• 100 lbs. lime 



* on this half 



2. Plat N. 



15 lbs. Nitrate 



Soda* 



100 lbs. lime : 

 •on this half '. 



3. Plat P. 30 pounds Superphos phate 



.100 lbs. lime; 

 • on this half '. 



o 



O 



03 



4. Plat Blank. 



No Fertil 



izer 



100 lbs. lime 

 on this half 



5. Plat KN. 



15 lbs. Muriate 

 15 lbs. Nitrate 



Potash 

 Soda'. • 



100 lbs. lime 

 on this half 



6. PlatKP. Mixed 



\ 15 lbs. Muriate 



( 30 lbs. Superp 



Potash • ; 

 hosphate 



100 lbs. lime 

 on this half 



7. Plat NP. 



15 lbs. Nitrate 

 30 lbs. Superp 



Soda-: •: •: •; •;•:•:•; lOO Ibs. llme 

 hosphate '•'.•'.'',''.'.'. on this half 



8. Plat NPK. 



15 lbs. Nit 

 Mixed ^ ^^ ^^^- ^^^"' 



rate Soda •; 

 iate Potash ', • 

 erphosphate 



100 lbs. lime; 

 on this half ; 



9. Plat S. 



Stable Ma 



nure •• • • 



100 lbs. lime 

 on this half • 



Eight rods long. 



