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Fig. 7 — This field, entirely idle for a few years, would require considerable labor or 

 the use of heavy equipment in addition to lime, fertilizer, and 

 reseeding to make it productive. 



as on the University Farm. Yields 

 of 15-20 tons of silage and 65-70 

 bushels of grain per acre were not 

 uncommon. Certainly such yields 

 are better than 8-10 tons for silage 

 and 35-40 bushels for grain, which 

 generally occurred with open-polli- 

 nated flint varieties back in the 

 1930's. 



The 1948 corn trials brought forth 

 the following observations: 



Dent corn hybrids were adapted 

 and continued to yield higher than 

 open-pollinated dents, dent-flint hy- 

 brids, and open-pollinated flints. 



Cornell 29-3 maintained its place 

 as a high-yielding early silage corn 

 and a late grain corn. 



The yields of open-pollinated West 

 Branch Sweepstakes were very vari- 

 able, because of stalk breakage and 

 differences in strains and sources of 

 seed. 



In search of dent hybrids to re- 

 place Sweepstakes as a late silage 

 corn variety, Wisconsin 692, al- 

 though producing a medium per- 

 centage of dry matter, was outstand- 

 ing in yield for the fourth consecu- 

 tive season. Ohio M-15 generally 

 yielded better than Ohio K-24 be- 

 cause of the slender stalks of the lat- 

 ter. 



For grain purposes, the hybrids 

 that mature in a medium-length sea- 

 son of 110-120 days, the Wisconsin 

 hybrids of the 200, 300, and 400 

 series gave good returns. Mass. 62 

 again was superior in this maturity 

 group. 



In the Connecticut River Valley at 

 Lancaster, the two dent-flint hybrids, 

 Maine B and Wisconsin 240, ma- 

 tured better and yielded 10 bushels 

 higher per acre than did two local 

 flint varieties. In the same field, 



15 



