Table 9: Corn yield and net return increases for seed-placed fertilizers at Oblong, 1993 and 1995

Illinois Fertilizer Conference Proceedings
January 29-31, 1996

Main Index 1996 Index Search

Starter	Average Yield Increase	Avg. Net Return Increase Above Fertilizer Cost^1,2	"Worst-Case" Scenario Net Return Increase³
lb/ac	bu/ac	$/ac	$/ac
0-0-0	0.0^d	0.00^b,c,d	0.00
5-17-0	13.6^a	24.07^a	6.63
10-34-0	13.1^a,b	16.41^a,b	-1.03
5-10-5	5.8^b,c,d	-4.29^c,d	-21.73
10-20-10	7.9^a,b,c	-16.77^d	-34.21
LSD(0.1)	7.8	17.44

¹Numbers in columns with the same superscript letter are not significantly different (a = 0.10)

²Net return = yield increase X $2.25/bu - starter fertilizer cost.

³Net returns are at least this amount 90% of the time