1 SEpr., 1899.] QUEENSLAND AGRICULTURAL JOURNAL. 297 
instance, the cost for each 100 Ib. of increase compared favourably with that of 
the other applications. The second largest yield was produced by a mixture of 
acid phosphate and cotton-seed meal (Plot 16), of which the cost was somewhat 
smaller, and next in amount of yield comes the plot that received stable- 
manure (Plot 15). Floats alone, and especially in combination with nitrate 
of soda (Plots 10 and 11), produce an excellent and comparatively cheap 
increase, while the mixture of floats and green cotton-seed (Plot 14) yields a 
considerable increase, though at a higher cost. 
The effect of various fertilisers upon the time of maturity of cotton was 
also tested in these trials. This is a question of supreme importance, -because 
prices are generally better at the beginning of the season. Moreover, the time 
of picking depends upon the weather, soil, and maturity of the plant, and these 
factors may also necessitate a second or third picking. According to the reports 
of the Auburn Station, the picking of the cotton on t 
he various experimental 
fields extends from the last week of August to the beginning and sometimes 
even to the end of December. In the following table, the averages of the 
results obtained are given. For the sake of easier comparison, the first and 
second pickings are entered in the columns headed “First Picking,” and. the 
third and fourth in the columns headed “ Second Picking.” The results have 
been arranged according to the various fertilising materials, and not according 
to the numerical order of the plots. The quantities of fertilisers applied to the 
various plots are the same as those applied to the corresponding plots in the 
table above. 
RESULTS OF FERTILISATION UPON Corron. AuUBURN STATION, 
I. II. ILI. Iv. 
No, Loamy Soil ; Sandy Soil; Sandy Soil; Caleareous Prairie 
ae Subsoil: Loamy. Subsoil: Loamy. Subsoil: Sandy. Soil; Subsoil: Clayey. 
0" 
First Second First Second First | Second First | Second 
Picking. Picking. Picking. Picking. Picking. | Picking. Picking. Picking. 
se | bol hc | 
PERCENTAGE OF Toran Yirp, 
A.—No FrrvILISER. 
4, 52°72 | 41°28 | 54:35 | 45°65 | 59°93 | 40°07 25°00 75°00 
8. 55°69 44°31 57°40 42°60 65°23 34°77 27°30 72°70 
12. 6141 | 38:59 | 5661 | 43°39 | 65:29 | 34:71 | Pp 4} Ya 
Average.) 58°61 | 41°39 | 5612 | 43°88 | 6348 | 36:59 [eno SO Mee Dal 7 
B.—Nrrrocen. j 
1. 54:77 | 45:23 | 56°68 | 43:32 | 64:38 | 35°62 | 40°00 | 60:00 
C.—PHOospPHoRIc Actip. 
2. 73°54 | 2446 | 71°56 | 28:44 | 63:39 | 36°61 | 26:67 | 73:38 
D.—Porasnu. 
3. 5d56 | 4444 | 55°66 | 44°34 | G6L68 | 938-39 | 28°60 | 71°40 
E.—NitTROoGEN AND Porasn, 
5 5667, | 48°33 | 5194 || 48:06 | 58:36 | 41°64 | 88:90 | 61:10 
H.—NitroGcEn AND PHospuorio Actp, 
6 7870 | 2130 | 74°37 | 25°63 | 65:80 | 34:20 | 34:30 | 65:20 
G.—PotasH AND PHospHoric Actp, 
Te, 72°61 | 27°39 | 68:06 | 81°94 | 68:34 | 81°66 -| 28:00 | 72:00 
H..—NIrrocEn, PorasH, AND PHospHorto AcID. 
9. 76°82 | 23918 | 71:07 | 28°93 | 67°75 | 32°25 | 40°00 | 60:00 
J.—STABLE Manure. 
15 | 76°24 | 23:76 | 75°48 | 24°52 | 71°37 | 28°63 | 2750 | 72°50 
Se eS 
