30,000 plants/A. Grain yields were harvested by plot combine

from 2 row trimmed to 20 feet. Two hundred and sixty lb N/A was

applied at fixed amounts according to the following schedule:

1. prior to planting, 50 lb N/A was applied as 1,000 lb 5-10-15;

2. at planting 10 lb N/A was applied on the surface as ammonium

polyphosphate (10-34-0); 3. About 21 April when the corn was

24 inches tall, 120 Ib N/A was banded near the row; 4. on 13

May 100 lb N/A was injected through the overhead sprinkler with

boron. Total N applied was 280 lb N/A. Temperate corn yields

were corrected to 15.5% moisture.

SORGHUM: Planting date, hybrid, and previous crop is shown for

sorghum in table 4. Nitrogen was applied at 100 lb/A about 20

days after planting. Four row plots were 48 feet long with rows

30 inches apart. Sorghum was planted with a no-till planter and

subsoiler (set at 12 inch depth). Plant density was approxi-

.mately 45,000 sorghum plants/A. Grain yield was determined on 10

foot sections of center row. Late planted sorghum required irri-

gation which was scheduled as in corn. Late planted sorghum also

had bird problems. Bird feeders with corn soaked in Avinol and

broadcast sprayed Azodrin 5 (2 pt/A) were used for control with

varing degrees of success. Midge was a problem in sorghum in

1982 and was broadcast sprayed 21 July with a hiboy sprayer with

Sevin at 3 lb/A. Midge and webworm were problems in late Aug,

1983 but both were controlled with Lannate at 2 pt/A or Orthene

at 1 3/4 pt/A. Fall armyworm can also be a problem on sorghum

but did not reach economic threshholds requiring treatment during

the study. Weeds were controlled as necessary according to

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