128 TIMEHRI. 
per acre. Mr. SCARD concluded that 2 cwt, of sulphate of 
ammonia per acre gave the best results in the Colonial 
Company's experiments, so that with regard to nitrogen 
the conclusions arrived at in these two series of field trials 
in this colony are in praétical agreement. 
The results with phosphatic manures were as follows : 
Not Limed. Limed. 
Tons Increase Tons Increase 
of due to of due to 
canes Phos- canes. Phos- 
per phates, per, phates, 
acre. Tons. acre.’ ‘Tons. 
Not manured oe sie eg 26'2 
Nitrogen and potash ... 4 ays so"s6 
Nitrogen, potash and 250 lbs. super- 
phosphate ane 26°85 1°05 33°9 1°65 
Nitrogen, potash and 275 Ibs. super- 
phosphate ae ae ww» 26°95 IIS 33° "75 
Nitrogen, potash and 500 lbs, super- 
phosphate... és , 28°45 2°65 33°! "85 
Nitrogen, potash and 400 tbs. ee 
phosphates... = ape, 25°80 nil 31°6 nil 
Nitrogen, potash and 800 tbs. mineral 
phosphates. ... ose 27°30 I°5 32°75 5 
The results on the crop of plant canes were :— 
Not manured ... ios we 38'8 43'8 
Nitrogen, and potash... oe ee 52°2 
Nitrogen, potash and 250 lbs, super: 
phosphate us is TRS 4°15 5601 3'9 
Nitrogen potash and 375 Ibs. super- 
phosphate 5 a+) (498 61 56°2 "4 
Nitrogen, potash and 500 ‘bs. super: ' 
phosphate... 20s ws 48°95 7°35 53°55), 30 ae 
Nitrogen, potash and 400 lbs, mineral 
phosphates... aoa 45°55 2°45 52°5 3 
Nitrogen, potash and 800 Ibs. mineral 
phosphate __... 44°05 2°95 50°85 __inil, 
The advantages wnat due to the additions of 
