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- DISCLAIMER:
- The Microsoft® Powerpoint®
files linked from this page are intended for the exclusive use of Purdue
University Cooperative Extension Service (PUCES) staff for their conduct
of educational programs for the citizens of Indiana. Non-PUCES visitors
to this page who desire to use these presentations for their own purposes
should request permission to do so from the respective authors.
- Instructions
- The presentations listed on this page include versions created with
Microsoft Powerpoint 97, 2000, and 2002. Over time, more of the presentations
will migrate toward the newer software version.
- The file size of each presentation is listed in parentheses next to
the link. You will note that some of the files are quite large, some
would say humongous. I considered offering the files in a PKZIP-compressed format that you could download
to your computer, then uncompress. Unfortunately, I discovered that
Powerpoint files do not compress much at all.
 As another alternative
for smaller downloads, I have begun to offer Adobe® Portable Document
Format (PDF) versions of updated or new Powerpoint presentations, in
both presentation (one slide per page) and handout (six slides to a
page) views, in an attempt to minimize the size of some of the large
original Powerpoint files.Adobe Acrobat® Reader® is free software
that lets you view and print Adobe Portable Document Format (PDF) files.
Click on the Acrobat Reader icon to access the Adobe download site.
 If you are using the Netscape®
Communicator® 4.xx, a dialog box will appear after you click on
a link below and give you a choice of opening the file directly with
Powerpoint (if it is installed on your computer) or saving the file
to your hard drive. If you are using earlier versions of Netscape, you
may need to press the <Shift> key at the same time you click on
the link in order to save it to your hard disk. If you use Microsoft
Internet Explorer® 5.xx, the Powerpoint file will open up (if Powerpoint
is the default viewer for such files) when you click the left mouse
button on the link. Alternatively, you can click the right mouse button
and select "Save Target As..." to save the file to your hard drive.
- If you run into problems accessing these files, please let
me know.
Good Luck!.......Bob Nielsen, Purdue Univ.
Agronomy Dept
Presentations Listed Alphabetically
- Best Management Practices for Relay Cropping of Soybean
into Winter Wheat
- Adobe
PDF version (Presentation view)
- © 2004, Purdue University.
- Tony Vyn, Purdue Agronomy (tvyn@purdue.edu)
- Corn Growth & Development Relative to Herbicide
Use
- Powerpoint® 2000
version (7.8 MB)
Adobe PDF
version (Presentation view) (1.5 MB)
Adobe PDF version
(Handout view) (462 KB)
- Many post-emergence herbicide labels restrict the size
or age of corn that can be treated. This presentation offers insight
into the uncertainties of determining corn growth stages relative to
herbicide usage.
- © 2003, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Corn Planter Tuneups: Why Bother?
- Online Powerpoint presentation
(Req. IE v5.0 or newer)
Powerpoint® 2002 version
(10.8 MB)
Adobe PDF version (Presentation view)
(2.2 MB)
Adobe PDF version (Handout view) (1.6 MB)
- A presentation on the importance of uniform plant-to-plant
spacing and emergence in corn, plus guidelines on improving planter
performance..
- © 2002-2004, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Cyberspace & Agricultural Technology Transfer: An
Indiana Experience
- Powerpoint®
97 version (0.44 MB)
- A presentation sharing my experiences using the WWW to
fulfill my responsibilities as an Extension Agronomist in Indiana. Adapted
from a presentation given at the Annual Meeting of the American Society
of Agronomy, October 1998.
- © 1999, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Life's Little Corn Problems: Tips on Crop Diagnostics
- Powerpoint® 2000
version (20.3 MB)
Adobe PDF
version (Presentation view) (6.9 MB)
Adobe PDF version
(Handout view) (4.5 MB)
- This presentation shares my experiences in the art of
crop diagnostics, including what questions to ask, how to look at a
field, how to resist the know-it-alls, how to locate that missing puzzle
piece, how to sneak away from the crowd, how to stick your foot in your
mouth, and how to hem and haw with the best of them. I also share some
experiences with photography, including digital imagery, from the perspective
of capturing these precious moments in crop diagnostics.
- © 2002-03, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Mitigate the Downside Risks of Second-Year Corn
- Powerpoint® 2002
version (3.8 MB)
Adobe PDF version (Presentation
view) (2.0 MB)
Adobe PDF version (Handout
view) (1.3 MB)
Written Summary (PDF format)
- The advent of soybean rust across the southern U.S.
late in 2004 has “added fuel to the fire” for some Indiana growers who
were already perceiving an economic advantage for switching intended
soybean acres to second-year corn acres in 2005. Agronomically, a continuous
corn cropping system is fraught with a multitude of negative yield influencing
factors. Most growers understand this. However, some are equally concerned
that soybean rust, soybean aphid (Aphis glycines Matsamura), or other
major soybean stresses in 2005 may result in unacceptably low soybean
yields and/or high production costs. Consequently, some growers seem
willing to accept the known risks associated with second-year corn in
order to avoid the uncertain risks associated with soybean production
in 2005. While most agronomists certainly do not encourage monoculture
of any kind, one can at least offer suggestions for mitigating the downside
risks of corn following corn for those growers who feel pressured to
do so.
- © 2005, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Protecting Your Non-GMO Grain From Contamination
- Online Powerpoint presentation
(Req. IE v5.0 or newer)
Powerpoint® 2002 version (9.9 MB)
Adobe PDF version (Presentation
view) (2.8 MB)
Adobe PDF version (Handout
view) (1.8 MB)
- Certain transgenic corn traits available to U.S. corn
growers are not yet fully approved in the global marketplace, especially
by the European Union. Consequently, certain U.S. grain buyers restrict
their purchases to that from only approved hybrids and reject grain
from non-approved hybrids or grain from fields of approved hybrids that
is "contaminated" with transgenic grain. This so-called "contamination"
can occur from mechanical mixing (commingling) of grain from different
hybrids during planting, harvesting, or post-harvest operations. Pollen
drift from transgenic hybrids can also cause "contamination" of neighboring
fields due to cross-pollination. Consequently, growers who desire to
maintain the non-transgenic purity of the grain in their production
fields need to understand corn pollen biology, the dynamics of pollen
drift, and possible methodologies for minimizing the risk of significant
pollen "contamination" from adjacent fields of non-approved corn hybrids.
- © 2003-2005, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Profitable Corn Management Strategies & Production
Practices
- Powerpoint® 2000 version
(18.4 MB)
Adobe PDF version (Presentation
view) (3.6 MB)
Adobe PDF version (Handout
view) (2.3 MB)
- Timeless ideas and suggestions for improving agronomic
efficiencies, and thus profitability, of corn production in Indiana.
- © 2002-03, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Selecting Hybrids Wisely
- Powerpoint® 2000 version
(727 KB)
Adobe PDF version
(Presentation view) (1.1 MB)
Adobe PDF version (Handout
view) (1.3 MB)
- Hybrid selection is among the most important decisions
that a grower makes each year, yet can be among the challenging. This
presentation offers some guidelines for growers to consider when comparing
hybrids.
- © 2002-03, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Sparse versus Dense Spatial Data
- Powerpoint® 97 version
(1.2 MB)
- Thoughts on the influence of the density of spatial data
sets on the ability to accurately interpolate spatial variability in
yield influencing factors.
- © 2000, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Online version: Click
here
- Stalk Rots and Lodging in Corn
- Powerpoint® 2000 version
(6.5 MB)
Adobe PDF version
(1.4 MB)
- Stalk rots and accompanying root & stalk lodging
in corn can be devastating in their effects on yield and harvest losses.
- © 2002, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Stand Establishment Issues & Concerns for No-Till Corn
- Powerpoint®
2000 version (19.1 MB)
Adobe
PDF version (Presentation view) (3.5 MB)
Adobe PDF version
(Handout view) (1.7 MB)
- This presentation discusses the issues and challenges
of achieving successfull stand establishment in no-till corn. Suggested
agronomic decisions for improving stand establishment are described.
- © 2003, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Stress & the Common Corn Plant
- Powerpoint®
2000 version (29 MB)
Adobe PDF version
(Presentation view) (10 MB)
Adobe PDF version
(Handout view) (5.7 MB)
- Corn's maximum yield occurs while it is still in the
seed bag. After the seeds are planted, the remainder of the season is
devoted to fighting off stresses of every shape and size. This presentation
offers insight into the effects of stress on corn growth and development
throughout the growing season.
- © 2002-03, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Transgenic Crops in Indiana: Short-term issues for farmers
- Powerpoint® 2000 version
(1.3 MB)
Adobe PDF version
(1.5 MB)
- A presentation about the market uncertainties surrounding
transgenic crops (GMOs), cost/benefit issues of transgenic crops from
an agronomic viewpoint, and the impact on farmers' choices on whether
to plant these crops in the next few years.
- © 2001, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Understanding Emergence & Stand Problems in No-Till
Corn
- Powerpoint® 97 version (3.0
MB)
- A discussion on stand establishment problems common to
no-till corn production.
- © 1998, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Understanding Factors That Limit Yield in Corn
- Powerpoint® 97 version (3.8 MB)
- A discussion about yield limiting factors in corn, especially
in relation to the adoption of site-specific farming technology.
- © 1998, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
- Using On-Farm Research: Are Those Real Differences I'm
Seeing?
- Powerpoint® 2000 version
(7.5 MB)
Adobe PDF version (Presentation
view) (2.5 MB)
Adobe PDF version (Handout view)
(1.0 MB)
- The purpose of this presentation is to help growers and
consultants better understand a few of the fundamental concepts of on-farm
research.
- © 2003, Purdue University.
- Bob Nielsen, Purdue Agronomy (rnielsen@purdue.edu)
© 1995, Purdue University, all rights reserved. It is the policy
of the Purdue Agronomy Department
that all persons shall have equal opportunity and access to its programs
and facilities without regard to race, color, sex, religion, national
origin, age, or disability. Purdue University is an Affirmative Action
employer. This material may be available in alternative formats.
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