Transcript /abhps/downloads/16909.ppt

Corn and Soybean Seeding Rates
• Research from IL and IA investigating
optimal corn and soybean seeding rates
based upon price of seed and selling price
of commodity
Soybean Economic Seeding Rates
Nt 15" Soybean Plant Population 2006-08
70
Yield (bu/acre)
65
60
y = -0.0006x 2 + 0.1717x + 53.555
R2 = 0.9459
55
50
70
80
90
100
110
120
130
140
150
Stand Count (x 1000 plts/acre)
Eric Adee, U of I Monmouth Research Center
RR soys, pre emerge herbicide, f/b post gly
Economic Soybean Seeding Rates
Final Stand
Split row (15") No-till Soybeans
2006-08, NWRC, Monmouth
Optimum Soybean Number of Plants/acre- Final Stand
(x1000)
Seed Cost
/150K Unit
Soybean Price/bu ($)
$8
$9
$10
$12
$30 119
121
123
127
$40 110
114
117
121
$50 102
107
110
116
$60
100
104
110
94
Soybean Economic Seeding Rates
15” rows, (Using 85% Seeding
Efficiency)
Seed
Cost
Soybean Price/bu
($)
/150K
Unit
$30
$40
$8
139
130
$9
143
134
$10
145
138
$12
149
143
$50
120
126
130
136
$60
111
117
122
130
2006-08 U of I Monmouth Research Center
Seed Price Estimates for 2009
Traits
None
Cost per
List price Discount acre @
Cost per
per 80k
Price
35k/a
1000 seed
$200
$163
$71
$2.03
Roundup
Ready (RR)
240
194
85
$2.43
RR + Corn borer
(ECB)
271
220
96
$2.75
247
320
201
260
88
114
$2.51
$3.25
RR +
Rootworm (RW)
RR+ECB +CRW
Adapted from Paul Kassel, Iowa State Univeristy
Seed Price Effects on Net Returns at Different
Plant Populations. Price= $3.25/bu; Yield= 200 bu/acre.
R. W. Elmore & L. J Abendroth. Iowa State University, 2008.
Net Income ($/acre)
600
580
560
45 k
40 k
540
35 k
30 k
520
25 k
20 k
500
480
2
2.25
2.5
2.75
3
3.25
Seed Price ($/1000 seeds)
3.5