938 



EFFECT,. OF THE NITRATES ON WHEAT. 



V. — On Wheat. 



Locality. 



grain straw grain straw 



Farnham, Suffolk, i 

 Mr. MusMt, . \ 



Painswick, Glou- \ 

 cester, Mr. Hyett, \ 



Fairford Park, do. i 

 Mr. Raym. Barker ) 

 Mr.Dugdale, . . 



Do. 



CourtFarm, Hayes 

 Mr. Newman, 



Brandon, Suffolk, 

 Hon. Mr. Wilson, 



Surrey, Mr. Bar- 

 clay, 



Faringdon, Mr. 

 Pusey, .... 



Ockley Court, Mr. 



Calvert, . . . I 

 Newton Hall, Mr. | 



Jobling, ... J 

 Cirencester, Dr. X 



Daubeny, . . . ( 



Rozelle, near Ayr, < 



Col. Campbell, . \ 



Undressed. Dressed. 



27 

 43«^ 



33i 



54 



36i 

 20 



32 



36 

 39i 

 331 

 391 



24^ 

 45f 



36 

 311 



47 

 42 



211 



381 



251 



23 



27| 

 341 

 251 

 24 i 



37i 



Quantity per acre, and kind of soil. 



1^ cwt. ; a poor spongy sandy soil. 



1 cwt. ; a stone-brask soil abounding 

 in carbonate of lime. 



I cwt. ; on a light stone-brash poor 

 thin soil. 



1 cwt. nitr. of soda, on SLgravelly soil ; 

 an equal weight riUrate of potash pro- 

 duced only I bushel of increase (1). 



I cwt. nit. of soda on a strong clay. 

 Both portions previously limed. 



1 cwt.; on a very thin crop, inj'd by an 

 unfavorable autumn. Soil not stated. 



I cwt. ; on a fair light soil. 



Do., loamy, better land. 



I cwt. ; soil loamy, resting on chalk, 

 straw strong,and much wheat laid.* 



Do. on heavy soil, resting on the Ox- 

 ford clay. But all these very different 

 resvZts were obtain^ in the same field. 



Do.; corn generally laid; soil not 

 mentioned. 



35j 1 cwt. ; soil not mentioned. 



20j 1 cwt. nitrate of potash. 



15^ Do. nitrate of soda, soil and subsoil 



clay, resting on the corn-brash. 

 52 1180 lbs. nitrate of soda. 

 76 JDo. nit, of potash. Soil not stated.t 



VI. — On Turnips. 



At Rozelle the Swedes were improved several tons an acre by the 

 use of the nitrate of soda (Mr. Campbell). At Dorking it was very be- 

 neficial as a top-dressing to the Swedes and white turnips, when sown 

 broad-cast at the rate of 1| cwt. per acre (Mr. Dewdney). In neither 

 of these cases is the soil described. On thin stony land upon chalk at 

 Filmshurst, Bucks, turnips manured with nitrate alone, were very su- 

 perior to those to which 10 loads an acre of farm-yard manure had been 

 applied (Mr. Burgess). The only numerical results with which 1 am 

 acquainted are those of Mr. Barclay on a loamy soil resting on chalk. 

 His crop of turnips was 



• The dressed grain sold at 4s. less than the undressed, and there was no profit ; the nitrate 

 failed on heavy land, and on land in high condition. 



t The produce of etraw, especially from saltpetre, is very surprising. It is stated at 518 

 and 764 stones for the two lots respectively. 1 auppose the acres to be Scotch, and the 

 stones 14 lbs. 



