FIELD CROPS. 489 



Field experiments with wheat, W. C. Laita iind W. B. Ander- 

 son {Indiana iSta. linL (il^ pp. r,;-7()). — This is a coiitiunatioii of work 

 j)ublisbed in Bulletin ."iO of the station (E. S. li.,-7, j). 303). 



Test of varietieH (p. 58). — Tabulated data give the yields for 9 varie- 

 ties of wheat with tlie aveni lies for 2 to 13 years. The authors note 

 the comparatively indifferent yields of new varieties not acclimated 

 and tlie continued good yield of varieties grown continuouslj'^ for 5 to 

 13 years. 



(/uantity of seed per acre (p. 51)). — Amounts varying from 2 to 8 pecks 

 I)er acre were sown. In 1800 7 pecks gave the highest yield. Six 

 pecks are recommended as sufficient on good land well prepared. 



Early and late sowing (p. 60). — Sowing about the middle of Septem- 

 ber is recommended. 



Effect of change of soil (pp. 00, 61). — Four varieties of wheat grown at 

 the station were sent to places in the northern, central, and southern 

 parts of the Stdte and the resulting wheat was returned to the station 

 and grown alongside the same varieties which had been in continuous 

 culture. Only 1 variety, Michigan Amber, produced more from the 

 imported seed. The authors conclude that change of soil may increase 

 the yield in some cases, but not in others. 



Early and late harvesting (pp. 62, 63). — Two varieties were cut when 

 in the milk, soft dough, hard dough, ripe, and dead ripe stages. Har- 

 vesting when in the hard dough stage gave the largest yield. 



BeiJth of plowing (pp. 63, 64). — Trials were made on 10 tenth-acre plats 

 of plowing 4, 6, and 8 in. deep, and of subsoiliug below part of the 

 and 8 inch plowings to depths of 4, 0, and 8 in. The results were 

 inconclusive. 



Phosphatic marl on icheat (p. 04). — Phosphatic marl containing 10 to 

 12 per cent of phosphoric acid was applied on 2 plats at the rate of 220 

 lbs. per acre and produced no perceptible effect on the yield. 



Wheat in alternation u-ith corn with and without manure (pp. 04-66). — 

 Dissolved boneblack, sulphate of ammonia, and muriate of potash were 

 applied on 2 plats, horse manure on 2, and 3 plats received no fertilizer. 

 The author states that the heavier applications of manure and com- 

 mercial fertilizers returned the larger profits, with only slight difference 

 between them. 



Continuous wheat groanng tvith and without manure (pp. 00, 07). — The 

 same combinations of manures as in the previous section, but in differ- 

 ent amounts, were used on 7 plats on which wheat was grown continu- 

 ously. The commercial fertilizers are reported as being used at a loss, 

 while the barnyard manure returned a small profit. 



Complete and incomplete fertilizers on «'/iewi (pp. 08-70). — Dissolved 

 boneblack, sulphate of ammonia, and muriate of i)otash, alone and in 

 combinations of 2 and 3, and horse manure, cattle manure, gypsum, 

 lime, and salt alone, were applied on 12 tenth-acre plats; 5 plats received 

 no fertilizer. 



