380 



THE FARMER'S MAGAZINE. 



Group I. on Swedish turnips ; the soil, a free 

 clay, manured with 15 loads of dung per acre, 

 and artificial manures in addition, worth 28s. 

 per acre. The produce per acre is given in tons 

 and cwts. 



1. 2cwt. of guano 21 o 



2. 3cwt. dissolved bones 22 2 



3. 2cwt. 6st. dissolved bones and sul- 



phate of ammonia mixed, ]0 to 1 18 15 



4. 4cwt. of rape-cake 20 12 



5. Soil simple 17 5 



Group II. on Swedish turnips; the same field as 

 No. 1 group, with double the quantity of artificial 

 manures, each worth £2 15s. per acre, but with- 

 out any dung. 



1. 4cwt. guano 22 10 



2. 6cwt. dissolved bones 20 5 



3. 5cwt. 4st. dissolved bones and sul- 



phate of ammonia, lOtol 18 



4. 8cwt. of rape cake 19 10 



Group III. on purple-top yellow turnip, on a 

 strong clay soil, all dressed with 20 loads per 

 acre of dung, and also the undermentioned ar- 

 tificial manures, worth 2Ss. per acre : — 



1. Soil simple 9 10 



2. 2cwt. guano 11 7 



3. Dissolved bones 12 17 



4. 2cwt. 6st. dissolved bones and sul- 



phate of ammonia, 10 to 1 15 2 



5. 4cwt. of rape-cake 13 2 



Group IV. on white globe turnip on the same 

 field as No. 3. series, dressed with 20 loads of 

 dung per acre, and 28s. worth per acre of the 

 following artificial manures ; — 



1. Soil simple produced 10 



2. 2cwt. guano 12 



3. 3cwt. dissolved bones 13 



4. 2cwt Gst. dissolved bones and sul- 



phate of ammonia ,10 to 1 12 



5. 4cwt. rape-cake 12 



Group V. on purple-top yellow turnip, on a poor 

 light soil; dressed with 12 loads of dung, and 

 28s. worth of the following artificial manures ])er 

 acre : — 



1. Soil simple produced 9 5 



2. 2cwt. guano 11 5 



3. 3cwt. dissolved bones 11 5 



4. 2cwt. Gst. dissolved bones and sul- 



phate of ammonia, 10 to I 13 



5. 4cwt. rape-cake 10 2 



Group VI. , white globe turnip, on the same soil 

 as group No. 5, dressed with 15 loads of dung, 

 and 28s. worth of the undermentioned artificial 

 manures per acre ; — 



1. Soil simple produced 12 7 



2. 2cwt. guano 16 10 



3. 3cwt. dissolved bones l7 



4. 2cvvt. 6st. dissolved bones and sul- 



phate of ammonia mixed 10 to 1 15 10 



5. 4cvvt. rape-cake 17 5 



The average result then of these six series of 

 experiments on turnips was as follows, the pro- 

 duce in tons and cwts. ; — 



12 

 15 



17 



7 



Per Acre. 

 Guano 15 17 



Dissolved bones 16 4 



Dissolved bones and sulphate of am- 

 monia 15 9 



Rape-cake 15 9 



Much attention has of late been well bestowed 

 on the growth of kohl-rabi, and as it possesses the 

 very considerable advantages of thriving on stiff clay 

 soils, and of withstanding the extremes of drought 

 and frost, its cultivation will, in all probability, be 

 steadily extended. Two papers on this root will 

 be found in the last number of the Journal of the 

 Royal Agricultural Society, by Mr. William Ben- 

 nett, of Cambridge (vol. xx, p. 467), and by Messrs. 

 Peter Lawson and Son, of Edinburgh {ibicL p. 

 497) ; and to these papers the attention of the 

 reader may be well directed. The first question to 

 which the farmer will require an answer is, as to 

 the feeding value of the kohl-rabi. This inquiry is 

 thus answered by Professor Anderson, who gives 

 the following result of his analysis of its bulbs 

 and leaves {ibid. vol. xx p. 523) : 



bulbs, leaves. 



Dr. Anderson appended to this analysis the fol- 

 lowing note to the Messrs. Lawson : " You will 

 observe that both in point of composition and 

 feeding value, the bulbs and leaves are quite iden- 

 tical. They are about twice as valuable as ordi- 

 nary turnips, and materially surpass the best 

 swedes, which rarely contain more than 9 or 10 

 per cent, of solid matters, and about 1.5 per cent, 

 of albuminous compounds." Way and Ogston 

 {ibid., vol. xi. p. 511) did not find so large a pro- 

 portion of ash in the kohl-rabi they examined as 

 Dr. Anderson. Their analysis gives 0.95 per cent, 

 of ash in the bulbs and 2.80 in the leaves. This 

 ash was composed per cent, of 



Sihca 



Phosphoric acid 



Sulphuric acid . 



Carbonic acid . 



Lime 



Magnesia 



Per-oxide of iron 



Potash 



Soda 



Chloride of potassium 



Common salt 



BULBS. LEAVES. 



.82 



13.46 



11.43 



10.24 



10.20 



2.36 



.38 



36.27 



2.84 



11.90 



9.57 

 9.43 



10.63 

 8.97 



30.31 

 3.62 

 5.50 

 9.31 



5.99 

 6.66 



There are various points in the cultivation of 

 this root which require attention according to the 

 nature of the soil and climate; some of its 

 growers, for instance, always drilling the seed on 

 the ridge in the field; others as strongly preferring 

 to rear it in seed-beds, and transplanting it like 

 cabbages. Mr. Bennett is for drilling its seed ; 



