1 Jan., 1899.] QUEENSLAND AGRICULTURAL JOURNAL. 53 
Phosphoric 
Nitrogen. Potash, Acid. Lime, 
78,701 lb. cane ready for grinding ... 40°9 85:0 4.0°1 16°5 
54,805 ,, tips and green leaves xy OHS 33°5 5:0 4:9 
9,523 ,, dry leaves ... ax 23:9 52°6 78 506 
Total... £ on (yey [halal 52°9 72:0 
It is evident that even the best soils will become depleted in the course of 
time, and they must, of course, be replenished, in order to produce profitable 
crops. The continued planting of sugar-cane exhausts the soil very rapidly, 
causing first a deficiency of nitrogen, then of phosphoric acid, and lastly of 
potash. ‘I'he application of stable manure and artificial fertilisers is, therefore, 
rendered indispensable. Unfortunately, ready mixtures are generally applied 
to this plant, so that only by conducting exhaustive experiments can we obtain 
definite results regarding the beneficial effects of the single ingredients. A 
few trials have been inaugurated, it is true, but no fixed conclusions can be 
drawn from them. ; 
The following three tables, illustrating the results of the latest experi- 
ments conducted in Java, were recently prepared by Mr. W. Hicke, Mestfabriek, 
Samarang :— e 
FERTILISER EXPERIMENT ON SUGAR-CANE IN JAVA. 
Sugar , 
’ Analysis of Juice at Medium 
No a gent Spee Pressure of 73'6 per cent. 
ot Fertilisers Applied per Acre in Ib, from 1 Acre at 
Plot. lAcre, | 75 per 
hh SS 
Pressure. | Brix, | Sugar. Purity. |Glucose, 
lb. lb. |p.cent.} p.cent.| p.cent.| p. cent. 
1 | No fertiliser ... ats mt re, «. | 41,082 5,087 | 21°5 | 19°04 | 886] 0°40 
3b oe, r avs i, yy" re we {| 42,971 5,937 | 20°3 | 18°01 | 88:7 | 0:33 
3 | 393 Ib. guano and 236 1b. sulphate of i 
potas oe ab " ... | 54,619 6,611 | 21:4 | 18°68 | 87:3 | 0°48 
4 | 236 ,, bone-meal and 178 lb. sulphate of 
ammonia .. ue Fe .| 55,563 6,532 | 20:9 | 18:29 | 87°5 | 0:40 
5 393 ,, guano (10 per cent. phosphoric 
acid, 7 per cent. nitrogen, 4 per 
cent. potash) tc oF ... | 56,586 6,847 | 20°6 | 18°35 | 89:1 | 0:27 
6| 236 ,, earth-nut cakes and 236 Ib, : 
nitrate of soda... ee Bee ans 303 8,657 | 20°6 | 18°38 | 89:2 | 0:27 
7 | 393 ,, guano and 78 lb. sulphate of 
ammonia and 156 sulphate of 
potash re Fé os ... | 78,150 9,208 | 211 | 18:40 | 87:2 | 0:57 
8] 786 ,, earth-nut cakes (55 per cent. 2 
nitrogen) 93,340 | 10,073 | 19°1 | 16°74 | 87:6 | 0-42 
9 | 1,180 ,, earth-nut cakes and 236 1b sul- 
phate of potash (50 per cent.) ...; 101,996 | 10,861 | 19°3 | 16°73 | 86:7 | 0°57 
10 | 1,180 ,, earth-nut cakes and 315 lb. sul- 
phate of potash ... «| 110,103 | 11,097 | 19°0 | 16°23] 85:4] 0°57 
11 | 1,180 ,, earth-nut cakes and 393 lb. acid 
phosphate (30 per cent.) ... | 97,668 | 11,333} 20°8 | 18:19 | 87:5 | 0:48 
12 | 1,180 ,, earth-nut cakes and 236 lb. bone , 
meal (25°4 per cent.) ... ... | 104,909 | 11,411 | 20° | 17°51 | 85:4 | 0°67 
13 | 1,180 ,, earth-nut cakes and 156 lb. sul- 
phate of potash ... vi ... | 118,644 | 11,491 | 190} 16°23] 85:4] O52 
14 |1,180 ,, earth-nut cakes and 315 lb. acid 
: phosphate ... a 4a ... | 106,473 | 11,648 | 19:4 | 17°02 | 87:71 0:36 
15 | 1,180 ,, earth-nut cakes and 472 lb. acid 
phosphate ... 110,968 | 11,963 | 19°6 | 16°99 | 86:7 | 0°66 
16 |1,180 ,, earth-nut cakes and 393 Ib. sul- 
phate of potash ... if ...| 114,038 | 12,041 | 19:4 | 16°76 | 86:4] O-DSL 
17 | 1,574 ,, earth-nut cakes... rs ... | 125,056 | 12,277 | 18°38 | 15°69 | 85-7 | 0°63 
18 | 1,180 ,, ” See ete eee | LU 667 1) 12,592 918 19°69) 17413, | 287-4) 10-45 
rf +, and 393 Ib. plaster | 119,075 | 12,670 | 19°7 | 16°97 | 86:1 } 0°55 
20 | 1,180 ,, earth-nut cakes and 393 lb. acid 
phosphate and 236 lb. sulphate 
of potash ... My. re tei 
were 
118,603 | 12,986} 19°6| 17-07] 871| 0-47 _ 
