No. IX.] EXPERIMENTS UPON WHEAT AND POTATOES. 77 



N. B. — I take the average of the two plots which had no manure, as the sum 

 to deduct for finding the increased produce. The second column from the 

 right is made hay, the third is green grass, weighed soon after being cut. 



Experiment III. — Upon Wlicat. 



Soil, a good strong loam, resting on a heavy subsoil composed of clay and 

 small stones, called till. The wheat was sown in November, 1841, after a crop 

 of potatoes. The field had been long in grass previous to 1840 — when it was 

 dramed, and ploughed for oats in the sfiring of 1840 — was well dunged with 

 good farm-yard manure, and was also limed for the potato crop of 1841, so that 

 the field was in very good condition for wheat. 



The manures were applied 14th April, 1842, and harrowed in with a stroke 

 of the harrows. 



May 10. — The portion No. 1 seems darker in shade than No. 9 and No. 8. 



June 28. — A calm day, with gentle rain — many of the lots much bent down, 

 as follows: — No. 1 much bent down. No. 2 partly swirled and bent at the 

 end next a planting. No. 1 swayed at east e«d next the planting, not so bad as 

 No. 2. No. 4 less bent down than No. 3. No. 5 much bent down and swirled. 

 Nos. 6 and 7 all standing. No. 8 partly laid down. No. 9 very much swirled 

 and laid. All the laid wheat came up again in a few days after the rain. 



The wheat was reaped with the sickle, and in due course stacked, in good 

 condition. It was thrashed on the 8th February, 1843. 



RESULTS OF EXPERIMENT III. WHEAT. 



Applications. 



Soot, 10 bushels 



JTurnbuU's Humu.s, 10 bushels. , 



Improved Bones 



TnrnbuU's British Guano 



Foreign Guano 



Nothing 



Sulphate of Soda , 



Sulphate of Ammonia , 



Nitrate of Soda 



Total Increase + 

 quan- 

 tity. Decrease — . 



lbs. 

 1213 

 lO.'JS 

 973 

 1193 

 1(M9 

 1008 

 1073 

 1138 

 1159 



+ 205 

 + 47 

 - 35 



+ 185 

 + 41 



+ 65 

 + 130 

 + 151 



Total 

 quantity. 



bush. lbs. 



13 3:3 

 12 48 

 11 58 



14 43 

 11 34^ 



11 



13 7 



13 38 



13 38 



Weight 



per 

 bushel. 



lbs. 



62 



61 



6U 



62 



62 



62 



62 



Increase. 



bush. lbs. 

 2 32 



47 

 57 

 42' 

 3:ii 



2 6 

 2 37 

 2 37 



Experiment IV. — On Potatoes. 



Soil, a medium loam, resting on gravel and sand. The field was ploughed 

 from old grass, and sown with oats in 1841 ; was drained (where wet) and deep 

 ploughed in the autumn of 1841 ; prepared for potatoes in the spring of 1842, 

 and well dunged at the rate of about 45 tons of very good dung from Glasgow, 

 per acre. The manures were applied in addition to the dung, hyping sprinkled 

 ubove t/te dung in the drills before 'placing tJie sets, then covered by reversing the 

 drills, on the 21st and 22d of April, 1842. 



During the season could discover little or no difference in the appearance of 

 the portions dressed with the specific manures, from where no applications 

 were made ; the crop was a very equal good one over all the field. One-fourth 

 of an imperial acre tn each plot. 



' I can ill reconcile the great produce from No. 4 with the appearances when growing, 

 and have been suspicious, that notwithstanding every precaution being taken to avoid mix- 

 ing, some sheaves of No. 5 plot, have been taken to No. 4, while the crop was in stook, as it 

 was soinetimes necessary (during the time the stooks were in the field) to have them re- 

 paired, they being blown down once or twice. 



The cost of the applications, as also '.he quantities applied, of the different materials, were 

 the same as in Experiment No. I., on Oats. The light grain is not here taken into account, 

 as it was too trifling in quantity and quality to be of any importance, and nearly the same in 

 every case. 



