352 Circular No. 6. 



IV — History of Crops Previous to 1897. 



What crops have been grown and how much yield per 

 acre in past years ? In case of cereals give number 

 of bushels of grain and tons of straw or stalks per 

 acre. 



V — History of Crop for 1897. 

 Kind of crop grown. 

 Date of planting. 



Date when crop begins to come up on each plat. 

 Date when crop is about half up on each plat. 

 Date when crop is practically all up on each plat. 

 From time to time keep note of any differences that may 

 appear between the various plats. 



Sample Record. 

 I. c — Hillside. 

 II. b — Gravelly. 



III. a — Runs down quickly and needs plant food. 



IV. Pasture for eight years, then two years corn — 50 bushels 



corn per acre and three-fourths ton stalks each year, etc. 

 V. Keep notes of time of planting, etc., as suggested in V 

 under History of Crop for 1897. 



Suggestions. 



The same kind and same amount of seed is to be sown on each 

 of the series of eight or nine plats in the set. Drive stakes in 

 such a way, and so number the plats that there will be no danger 

 of getting the several plats mixed and so cause confusion. It 

 must be remembered that this experiment is to be tried upon the 

 crop planted and not upon an accidental crop of weeds. In no 

 case will the experiment be of value if the weeds are allowed to 

 grow upon the plats. Thorough cultivation is one of the most 

 important features of the field test. 



It will be impossible to send an agent to inspect each series 

 of experiments, but if you become very much confused and do 

 not understand the instructions given, let us know and we will 

 try to help you out either by correspondence or by sending an 

 agent to your place. 



