1. 2008 PRELIMINARY CORN YIELD DATA
November 18, 2008

2. Forward-Looking Statements
Certain statements contained in this presentation are quot;forward-looking statements,quot; such as statements
concerning the company's anticipated financial results, current and future product performance,
regulatory approvals, business and financial plans and other non-historical facts. These statements are
based on current expectations and currently available information. However, since these statements are
based on factors that involve risks and uncertainties, the company's actual performance and results may
differ materially from those described or implied by such forward-looking statements. Factors that could
cause or contribute to such differences include, among others: continued competition in seeds, traits and
agricultural chemicals; the company's exposure to various contingencies, including those related to
intellectual property protection, regulatory compliance and the speed with which approvals are received,
and public acceptance of biotechnology products; the success of the company's research and
development activities; the outcomes of major lawsuits; developments related to foreign currencies and
economies; successful operation of recent acquisitions; fluctuations in commodity prices; compliance
with regulations affecting our manufacturing; the accuracy of the company's estimates related to
distribution inventory levels; the company's ability to fund its short-term financing needs and to obtain
payment for the products that it sells; the effect of weather conditions, natural disasters and accidents on
the agriculture business or the company's facilities; and other risks and factors detailed in the company's
most recent reports on forms 10-Q and 10-K. Undue reliance should not be placed on these forward-
looking statements, which are current only as of the date of this presentation. The company disclaims any
current intention or obligation to update any forward-looking statements or any of the factors that may
affect actual results.
Trademarks
Trademarks owned by Monsanto Company and its wholly-owned subsidiaries are italicized in this
presentation. All other trademarks are the property of their respective owners.
© 2008 Monsanto Company
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3. CORN SEED
Preliminary Yield Trial Results Reinforce Yield Advantage of
DEKALB Seed in the U.S.
2008 PRELIMINARY U.S. COMPETITIVE CORN
YIELD COMPARISON: DEKALB
215
210 DEKALB
GEOGRAPHY: U.S.
(APPROXIMATE DIFFERENCES)
205
207
COMPETITORS
Grow 2 Share
2009
200
OBJECTIVE:
Points
199
195 198
2008 PERFORMANCE UPDATE
BUSHELS/ACRE
196
190 193
• In > 12,800 comparisons, 191 190 189 189
185
DEKALB out-yields
184
competitive best by 180
182
9.8 bu/acre on average 175
• On 60 percent of the
170 171
acres planted, DEKALB
165
has 8-12 bu/acre
160
advantage
155
Source: Preliminary 2008
150
Monsanto and third party
100 RM 105 RM 110 RM 115 RM
90/95 RM
head-to-head comparisons Overall
RELATIVE MATURITIES (DAYS)►
of 5 leading DEKALB
hybrids within each RM zone
COMPARISONS: >840 >2,550 >670 >4,370 >4,350 >12,800
to national competitor
products containing similar
APPROXIMATE BU/AC
crop protection traits within 2
12.4 11.4 1.0 11.0 8.4 9.8
ADVANTAGE:
RM days as of November
14, 2008. Weighted
average calculated to 15%
moisture.
3

4. CORN SEED
DEKALB Preliminary Yield Trial Results Deliver a Strong Yield
Advantage Compared With Pioneer®
2008 PRELIMINARY U.S. COMPETITIVE CORN
YIELD COMPARISON: DEKALB
215
210 DEKALB
GEOGRAPHY: U.S.
(APPROXIMATE DIFFERENCES)
205 208
PIONEER®
Grow 2 Share
2009
200
OBJECTIVE:
Points
200
199
195 198
2008 PERFORMANCE UPDATE 197
BUSHELS/ACRE
190
• In > 9,800 comparisons, 191 191
189 189
185
DEKALB out-yields
186
184
Pioneer ® leading 180
hybrids by 8.8 bu/acre on 175
average
170
• On 60 percent of the 170
165
acres planted, DEKALB
160
has 7-14 bu/acre
advantage 155
Source: Preliminary 2008
150
Monsanto and third party
100 RM 105 RM 110 RM 115 RM
90/95 RM Overall
head-to-head comparisons
RELATIVE MATURITIES (DAYS)►
of 5 leading DEKALB
hybrids within each RM
COMPARISONS: >800 >1,700 >550 >3,360 >3,425 >9,800
zone to Pioneer® products
containing similar crop
APPROXIMATE BU/AC
protection traits within 2 RM
14.3 11.0 0.1 9.6 7.2 8.8
ADVANTAGE:
days as of November 14,
2008. Weighted average,
calculated to 15% moisture.
4

5. CORN SEED
ASI Shows Greatest Gains in Maturity Zones That Cover Over
Half of All Planted Acres
PRELIMINARY 2008 U.S. COMPETITIVE CORN
YIELD COMPARISON: ASI
ASI
230
GEOGRAPHY: U.S.
(APPROXIMATE DIFFERENCES)
225
2009
COMPETITORS
Gain 1 share pt.
OBJECTIVE: 225
220
2008 PERFORMANCE UPDATE 215
216
BUSHELS/ACRE
210
• Overall, 2008 yield 213
209
205
comparisons showing 207
207 206
200
7.2 bu/ac advantage for
200
195
ASI over competitive best
190
• Greatest yield advantage 193
192
185
186
in RM 110 and 115, which 186
180
is in the heart of the
175
cornbelt
170
165
Source: Preliminary
160
2008 Monsanto internal
trials which compare the
155
5 leading ASI hybrids
within each RM zone to
150
Pioneer and NK brand
95 RM 100 RM 105 RM 110 RM 115 RM Overall
products containing RELATIVE MATURITIES (DAYS)►
similar crop protection
LOCATIONS:
traits within 3 RM days
73 79 74 96 96 418
as of November 13,
2008. Weighted APPROXIMATE BU/AC
5.7 6.1 2.2 11.3 10.0 7.2
average, calculated to
ADVANTAGE:
15% moisture.
5

6. CORN SEED
Value to Farmer Combines Yield and Harvest Moisture
Advantages
$70
MOISTURE YIELD
$64
$60
Grower Income Advantage -$/Acre
$55
$53
GEOGRAPHY: U.S. $50
2008 PERFORMANCE UPDATE
$39
$40
• On 60 percent of the
acres planted, DEKALB
has an 8-12 bu/acre
$30 $25
advantage
• With 0.6% - 2.0% harvest
$20
moisture advantage on
all acres, total value
$10
advantage for DEKALB
is $25-$65/acre
$0
100 RM 105 RM 110 RM 115 RM
90/95 RM
RELATIVE MATURITIES (DAYS)►
COMPARISONS: >840 >2,550 >670 >4,370 >4,350
APPROXIMATE BU/AC
12.4 11.4 1.0 11.0 8.4
ADVANTAGE:
HARVEST MOISTURE
.7% 2.0% 1.9% 1.1% .6%
ADVANTAGE:
1. Source – Yield data are preliminary 2008 Monsanto and third party head-to-head comparisons of 5 leading DEKALB brands within each RM Zone to national competitor products
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containing similar crop protection traits within 2 RM as of November 14, 2008. Drying cost based on $0.06/bu per point of moisture and corn price calculated at $4.00/ bu.