FIELD CROPS. 31 



Cylindor experiments were made witli lime for alfalfa on different types of 

 soil. These soils were benefited l»y the lime in the follqwins oifler : Augusta 

 limestone. P^reehold marl, New Brunswick red shale. Oakland glacial drift, 

 Woodstown heavy clay, and Woodliine sand. In another test it was shown that 

 nitrate of soda applied in June, July, and August did not increase the yield. 

 In this test the use of 300 Ihs. of acid phosphate and 200 lbs. of muriate of 

 potash gave an inci*eased yield of only 4.1 per cent over the use of 200 llis. of 

 Sfcid phosphate and 150 lbs. of muriftte of potash. 



Thoroughbred white flint corn planted July 10 yielded 8.2') tons of green 

 forage per acre, and a mixture of 12 qts. of Kafir corn and 1^ bu. of cowpeas, 

 sown broadcast, per acre, gave a yield of 11.3 tons. Twelve varieties of cow- 

 peas wei-e compared and notes on the habit of growth and the yields are given. 

 Clay ranked first in the production of green forage, with 8.3 tons per acre, and 

 Warren Xew Hybrid in the ])roduction of seed, with 13.3 bu. In a test of 4 

 varieties of soy beaus Medium Yellow No. 12.399 stood first in production of 

 Ixith green forage and seed, the yields being (>.9 tons and 24.5 bu., I'espectively. 

 The average cost of producing a ton of hay from 10 acres of oats and peas was 

 .^7.91, the average yield per acre being 2.15 tons. Four varieties of corn grown 

 lor the silo produced a ton of forage at an average cost of .$1.14, the range 

 being from $1.10 to $1.19. Southern White stood first in yield, with 9.7 tons 

 per ncr(>. A comparison of soiling and silage crops showed that corn silage 

 cost per ton 18 cts. more than soiling crops. 



Nitrate of soda proved profitable when apjtlied as a toii-dressing to rye, but 

 on wheat and vetch it was used at a loss. It is stated that this substance 

 should be applied only on cereals and grasses very early in the spring. 



Observations and experiments on clover, alfalfa, and soy beans, II. Gar- 

 man (Kentucky t<ta. Bnl. 12'}, pp. 37-61, pi. 1, fig. 1). — Soil inoculation for 

 leguminous crops is discussed and results obtained in experiments along this 

 line are reported. The failures in growing leguminous plants -are considered 

 due to poor seed, insufficient humus content of the soil, inadequate soil prepara- 

 tion, weeds, plant diseases and insect enemies, and the absence of lime, potash, 

 t)r other mineral elements. The results of investigation with these different 

 crops indicate that clover should be grown on clean land containing sflme 

 liumus and alfalfa on good land not too wet. Both crops give Iiest results from 

 sitring ])lanting on well-prepared land, the seed being worked in with a drag or 

 harrow. Inoculation with cultures or soil did not help the stand of either 

 clover or alfalfa, and nodules are developed on both plants in Kentucky soils 

 without inoculation, although this treatment may increase the numljer of 

 nodules in any soil. Inoculation of the seed fajled to increase the yield of the 

 leguminous plants, but it is believed that the benefit from inoculation in these 

 particular soils falls largely to the succeeding crop. It was observed that the 

 nodules were lai'ge when few and small when numerous, and that fresh moist 

 lultures are better than dry ones. 



Culture tests in 1904 and 1905, A. Damseaux {Bui. Agr. [Brusacls}, ,?,? 

 (1906), Xo.,1, PI). ')-'i-61). — Experiments were made with cereals, root crops, 

 and various other forage plants. The results of fertilizer experiments with 

 sugar iKM'ts, in which 300 and 500 kg. of salt was applied in conjunction with 

 500 kg. each of superphosphate and nitrate of soda per hectare, showed that 

 tlie use of the salt increased the yield of sugar. The largest yield of roots and 

 leaves of carrots was obtained on a plat where 20,000 kg. of barnyard manure, 

 500 kg. of superphosphate, and 200 kg. each of sulphate of potash and nitrate 

 of soda were applied per hectare. This plat produced 72,100 kg. of roots and 

 12,500 kg. of leaves, furnishing 8,940 kg. of dry matter ]\er hectare. 



