322 EXPERIMENT STATION RECORD. [Vol.40 



the soil improved as the work progressed, the average yearly effect of lime 

 applications as measured by increase in yield decreased. 



The best response from The use of lime was secured on a light, strongly acid, 

 sandy soil and the largest increases in yield were obtained with turnips and 

 grass mixtures. Striking increases in yield were also secured with rye and 

 oats. In on.- of the tests with grass mixtures on a light, Strongly acid, sandy 

 soil, clover practically disappeared <>n the plats receiving no lime. The 

 Increase in yield of fodder beets also was quite definite from the use of lime 

 on the soil, and this is believed to have been due largely to the action of 1 

 in reducing planl diseases. Other results seemed to confirm this view, and it 

 is stated that since the favorable action of lime is Influenced by the fertility of 

 the soil as well a* by tie- disinfecting power of the lime Itself, results of a field 



t' -t to determine the lime requirement of the soil can not 1 ipected always to 



show the true condition of the soil with regard t>> its Deed of lime. 



Alfalfa and Mack medic as a rule responded to a mucb * extent to 



applications of lime than did clover, blrd'8 foot trefoil, and kidney vetch. 

 although clover made practically no growth in one test on a lime-poor soil 

 without lime application. In one of the tests oats as compared with rye proved 

 the more resistant to unfavorable soil conditions in lime-poor soils ami under 

 Similar conditions Parley in a mixture of Parley and oats nearly disappeared on 

 the unlimed plats, hut always made a Letter showing, relatively and other- 

 wise, where lime and marl had been applied. 



The results of comparisons of lime and marl, applied on the basis of equal 

 quantities of calcium carbonate, Indicated that marl proved somewhat more 

 beneficial than did lime. 



of different pulverized forms of lime compared, chalk was most effective hut 

 not enough bo to be of particular value, it is advised thai the price per unit 

 of weight of calcium carbonate be used as a deciding factor in the purchase 

 Of finely pulverized forms of lime. When lump lime is used the softer forms 

 or those moil- readily acted upon by the weather are considered us preferable 

 at times. 



(»n the particular soil on which different quantities of lime were tested, the 

 use of 12,000 lbs. of pulverized chalk per tomleland is.*--'.". lb& per acre) gave 

 an increase about 50 per cent peater than wa- secured from the us,. ,,f 4,000 

 lbs. When chalk in the raw state was applied, the last 4,000 lbs. of a total 

 application of 12,000 lbs. showed only about 10 per cent of the effect of the 

 first 8,000 lbs. used. The application of s,iM)i> lbs. of raw chalk was found much 

 more effective than the use of boon l D & of pulverized chalk. In one test on a 

 light acid sandy soil, in which the applications ranged from 8,000 to 24,000 

 and 48,000 lbs. of calcium carbonate in the form of lime or marl, the limn 

 in yield rose consistently with the quantity of Hire or marl applied, and the 

 results showed that the soil may take as high as 24,000 n, s . of calcium car- 

 ate per tSndeland without quite satisfying its lime requirement An ap- 

 plication of 1 000 lbs. of lime annually for seven years was found aboul one- 

 i larth as effective as a single application of nook lbs. per t5ndeland on a 

 strongly acid reacting soil. 



The injurious effect of borax in fertilizers on corn. S. lb CoNNKB (Pmr. 

 l)id. Acini. Sd„ 1917, i^i. !!>■'>' /.''.''. figs. J).— Tot tests made at the Indiana Kx- 

 perimenl Station are described, in whicb a study was made of the effect upon 



corn of a commercial fertilizer, carrying 5 per cent potash and 5 per cent 



available phosphoric acid, which was found to contain l.P'J per cent of borax, 

 and of a similar fertilizer prepared in the laboratory with and without the 

 addition of 2 per cent of borax. The materials were applied in varying amounts 

 both in the row ami broadcast «r 



