851 



from shallow cultivated plats, and 73 bushels from plats not cultivated except to 

 remove weeds by scraping the surface with a hoe. 



No appreciable ettect on yield of field corn resulted from cutting tiie tops when in 

 good condition for fodder, or from removing the tassels from alternate rows as they 

 appeared. 



Experiments made for 3 years illustrate the fact that there is relatively littb' dry 

 matter in corn during the early stages of its growth. When it had reached half rif 

 its height it had not more than 7, in full tassel less than .50, and when in the soft 

 milk stage less than 7.5 per cent as much dry matter as when fully mature. Unless 

 there is loss by dropi>ing of leaves the dry matter increases until the corn is mature. 



Indiana Station, Bulletin No. 39, April, 1892 (pp. 30). 



Field experiments with corn, W. C. Latta, M. S. (pp. ;j;}-.t.3)._ 

 A condensed account of exiieriinents in continuation of tliose reported 

 in Bulletin No. 133 of the station (see Experiment Station liecoid, vol. 

 I, p. 37). The following- subjects are treated: (1) Early and late phxut- 

 ing; (2) thick and thin i)lanting; (3) deep and shallow plowing; (4) 

 deep and shallow cultivation; (5) test of corn cultivators; (0) rotation rs. 

 continuous cropping; (7) eff'ectof previous manuring; (8) full rs. partial 

 applications of fertilizers ; (9) test of varieties. " The soil of the station 

 farm is a compact, dark-colored second bottom, containing a laige pro- 

 portion of clay intimately mixed with vegetable matter, and underlaid 

 with coarse gravel. Though highly retentive of capillary moisture, the 

 perfect natural drainage, due to the underlying gravel, prevents an 

 accumulation of free water in the soil. Owing to this fact, a protracted 

 drouth in July and August neutralizes in large measure the effects of 

 fertilization and methods of culture, and seriously reduces the yield of 

 corn." The plats varied in size from one tenth to one fourth of an acre. 



Early and late planting. — The yields for 3 years (1888-90) from plant- 

 ing at o different dates from May 1 to 29, are tabulated. The largest 

 average yield was from the earliest planting. 



Thick and thin planting. — The yields for 6 years (1885-91, omitting 

 1887) from planting at 5 different distances (10.75 to 19.5 inches apart 

 in the row), are tabulated. "The best average results were obtained 

 when the kernels were dropped 12 to 14 inches apart." 



Deep and shallow ploiring. — The yields in 1891 from plowing to five 

 different depths (4 to 12 inches) are tabulated, together with those in 3 

 previous years from plowing to depths of 4 and 8 inches. The varia- 

 tions in yields were too small to be decisive. 



Deep and shallow cultivation. — The yields for 4 years (1888-91) from 

 cultivating to three different depths (1-3 inches) are tabulated. The 

 largest average yield was from shallow cultivation (1 inch). 



Test of corn cnltirato)'s. — An account of a test in 1891 with six differ- 

 ent kinds of implements, three of which had also been tested during 

 3 previous years, "Those corn cultivators which run shallow, but 

 thoroughly pulverize the soil and leave the surface approximately level, 

 have given the best satisfaction." 



