320 Bulletin 179. 



very dry up to July 6th. Pleniy of rain from July 6th to July 20th, then 

 very dry. No more rain to speak of till ajter the potatoes weie matured and 

 dug. 



7 — Dates of cultivating plats. With a Hallock Weeder — May 20th, 23d, 26th, 



28th, 31st, June 3d and 10th. With cultivator — June 16th and 23d and 

 hand hoed. With cultivator June 29th and July 5th. With hiller July 12th. 

 With hiller July 24th and hand hoed. 



8 — Injury by crows, insects, pests, etc. Old beetles ate them a considerable when 



first came up. The summer hatch of beetles did little damage. Used Paris 

 green on them but once. 



9 — Keep record of general appearance of plats during summer. Which plats 



are most thrifty? Which least thrifty, etc. July 18th plats on which 

 superphosphate was used and the one of stable manure, tops darkest green. 

 Plats 8 {stable manure) and N P K {complete fertilizer) a little the most 

 thrifty. 



10 — General remarks and questions. Was well pleased with the experiment. It 

 was both interesting and helpful and was very little extra work or trouble, 

 besides the fertilizer well repaid all the little extra care and grew a fiiie crop. 

 The experiment showed that the nitrogen used was really detrimental to the 

 potato crop as it caused an extra large growth of vines and LESS TUBERS 

 THAN THE BLANK PLAT. 



We next come to the harvesting of the crop. Bull. 129, p. 146, says: 



" In carrying out this part of the work, allowance must be made for the pos- 

 sible growth of the roots of one row into the feeding-ground of the adjoining 

 rows; thus the outside row of one plat may steal food from the next plat, that 

 was not intended for it; hence the directions to exclude the two outside rows of 

 each plat, one on one side and the other on the other side, and not to include the 

 crop of those rows in the harvest measured, are important." 



"In measuring the crop, due credit should be given for every part of it that 

 can be utilized in any way; if corn, not only the seed, but the stalks; if wheat, 

 oats, etc., the straw as well as the seed; if potatoes, of course only the tubers." 



If each plat contains three rows, then harvest and weigh the middle row. If 

 each plat contains four rows, then harvest and weigh the two inside rows. If 

 each plat contains five rows, then harvest and weigh the three inside rows, and 

 80 on. 



Bear this important request in mind, namely, that it is necessary to report 

 separately the weight of each crop harvested upon both the limed and unlimed 

 half of each plat. 



[Fill out one of the following blank forms as a part of your report of records 

 and observations taken during the summer.] 



Size of each plat: length, 16 rods ; width, \ rod. 



No. of rows grown on each plat. 3. 



No. of rows included in the weighed yield of each plat. 1. 



