agridat (version 1.8.1)

ars.earlywhitecorn96: Early White Food Corn Performance Tests

Description

Early White Food Corn Performance Tests of 60 white hybrids.

source

L. Darrah, R. Lundquist, D. West, C. Poneleit, B. Barry, B. Zehr, A. Bockholt, L. Maddux, K. Ziegler, and P. Martin. (1996). White Food Corn 1996 Performance Tests. Agricultural Research Service Special Report 502.

Details

Data are the average of 3 replications. Yields were measured for each plot and converted to bushels / acre and adjusted to 15.5 percent moisture. Stand is expressed as a percentage of the optimum plant stand. Lodging is expressed as a percentage of the total plants for each hybrid. Ear height was measured from soil level to the top ear leaf collar. Heights are expressed in inches. Days to flowering is the number of days from planting to mid-tassel or mid-silk. Moisture of the grain was measured at harvest.

Examples

require(lattice)
dat <- ars.earlywhitecorn96
# These views emphasize differences between locations
dotplot(gen~yield, dat, group=loc, auto.key=list(columns=3),
        main="ars.earlywhitecorn96")
dotplot(gen~stalklodge, dat, group=loc, auto.key=list(columns=3),
        main="ars.earlywhitecorn96")
splom(~dat[,3:9], group=dat$loc, auto.key=list(columns=3))