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 ;•■.•;•;•;•'.• 



4. Plat Blank. 



No Fertil izer 



.100 lbs. lime; 

 • on this half ] 



:100 lbs. lime- 

 ' on this half ■ 



T3 

 O 



3 

 'a 



5. Plat KN. 



15 lbs. M uriate I Potash- 

 15 lbs. Nitrate Soda-. - 



: 100 lbs. lime ■ 

 on this half • 



6. Plat KP. Mixed ] 



15 lbs. Muriate 

 30 lbs. Superp 



Pota.sh - ; • 

 hosphate ■ 



100 lbs. lime- 

 on this half • 



7. Plat NP. 



15 lbs. Nitrate 

 30 lbs. Superp 



Soda-; •; -; •; -; -; -; -; 100 lbs. lime 

 hosphate ■•;•;•;■;•;•; on this half 



15 lbs. Nit rate Soda ■ 

 8. Plat NPK. Mixed -^ ^^ ^^^' ^^^^^ ^^^^ Potash ; 



/ 30 lbs. Sup 



erphosphate 



100 lbs. lime ; 

 ■ on this half ; 



9. Plat S. 



Stable Ma nure 



100 lbs. lime- 

 on this half • 



Eight rods long. 



