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Initiation of vegetative and reproductive structures (chart)
Description/Suggested Alternate Text:
Periods of initiation and growth for individual above-ground plant structures from planting to R6.

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Image(300dpi)
$32.00
Image(96dpi)
$11.20
Close-up of a collared leaf with "line" on the back side
Description/Suggested Alternate Text:
Collared leaves typically have a "line" on the back side that is distinguishable.

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Image(300dpi)
$16.00
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$5.60
Close-up of collared leaves at leaf opening
Description/Suggested Alternate Text:
Collared leaves have slightly pale tissue at the point where the leaf opens away from the stalk.

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Image(300dpi)
$16.00
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$5.60
Lower stalk split and nodes distinguishable
Description/Suggested Alternate Text:
Corn plant split lengthwise through the root system with nodes 1 through 8 visible.

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Image(300dpi)
$16.00
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$5.60
Rate of vegetative development from emergence to final leaf (graphic)
Description/Suggested Alternate Text:
Prediction of vegetative development based on growing degree day accumulation.

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Rate of reproductive development from R1 to R6 (graphic)
Description/Suggested Alternate Text:
Prediction of reproductive development based on growing degree day accumulation.

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Impact of seeding depth on plant's root formation
Description/Suggested Alternate Text:
Seminal and nodal root development of V2 plants at seeding depths ranging from 0.5 to 2.5 inches deep. 

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Lower stalk split with roots and nodes distinguishable
Description/Suggested Alternate Text:
Plant dissected lengthwise through the nodal root system with roots originating from specific stalk nodes.

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Close-up of lower stalk and brace roots
Description/Suggested Alternate Text:
Brace root development at stalk nodes 6, 7, and 8.

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Mature kernel with different components distinguishable
Description/Suggested Alternate Text:
Whole and cross-sectioned kernels with pericarp, embryo, and endosperm.

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Germinating seed
Description/Suggested Alternate Text:
Four seeds showing the process of germination and changes in the radicle and coleoptile in timeline progression.

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Emerged (VE) plant
Description/Suggested Alternate Text:
Plant at emergence with radicle, seminal roots, mesocotyl, and coleoptile.

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Plant development from planting to V2
Description/Suggested Alternate Text:
Seed and plant growth from planting to V2 in timeline progression.

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V1 plant
Description/Suggested Alternate Text:
Plant with one leaf collared; roots also shown.

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V2 plant
Description/Suggested Alternate Text:
Plant with two leaves collared; roots also shown.

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V3 plant
Description/Suggested Alternate Text:
Plant with three leaves collared; roots also shown.

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Image(300dpi)
$32.00
Image(96dpi)
$11.20
Dissected V3 plant
Description/Suggested Alternate Text:
Plant completely dissected showing all visible leaves, stalk, and root system.

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V6 plant
Description/Suggested Alternate Text:
Plant with six leaves collared; roots also shown.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Dissected V6 plant
Description/Suggested Alternate Text:
Plant completely dissected showing all visible leaves, stalk, ear shoots, and root system.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Tassel from a V7 plant
Description/Suggested Alternate Text:
The tassel and upper portion of the stalk from a V7 plant.

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$16.00
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$5.60
V9 plant
Description/Suggested Alternate Text:
Plant with nine leaves collared; roots also shown.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Dissected V9 plant
Description/Suggested Alternate Text:
Plant completely dissected showing all visible leaves, stalk, ear shoots, and root system.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Tassel from a V9 plant
Description/Suggested Alternate Text:
The tassel and upper portion of the stalk from a V9 plant.

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Image(300dpi)
$16.00
Image(96dpi)
$5.60
Ear shoots from a V9 plant
Description/Suggested Alternate Text:
Ear shoots from stalk nodes 6 to 13 arranged in progression.

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V12 plant
Description/Suggested Alternate Text:
Plant with twelve leaves collared; roots also shown.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Dissected V12 plant
Description/Suggested Alternate Text:
Plant completely dissected showing all visible leaves, stalk, ear shoots, and root system.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Tassel from a V12 plant
Description/Suggested Alternate Text:
The tassel and upper portion of the stalk from a V12 plant.

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Image(300dpi)
$16.00
Image(96dpi)
$5.60
Ear shoots from a V12 plant
Description/Suggested Alternate Text:
Ear shoots from stalk nodes 7 to 14 arranged in progression.

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V15 plant
Description/Suggested Alternate Text:
Plant with fifteen leaves collared; roots also shown.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Dissected V15 plant
Description/Suggested Alternate Text:
Plant completely dissected showing all visible leaves, stalk, ear shoots, and root system.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Tassel from a V15 plant
Description/Suggested Alternate Text:
The tassel and upper portion of the stalk from a V15 plant.

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Image(300dpi)
$16.00
Image(96dpi)
$5.60
Ear shoots from a V15 plant
Description/Suggested Alternate Text:
Ear shoots from stalk nodes 6 to 13 arranged in progression.

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Image(300dpi)
$16.00
Image(96dpi)
$5.60
Ears from a V15 plant
Description/Suggested Alternate Text:
Three uppermost ears from stalk nodes 11, 12, and 13.

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V18 plant
Description/Suggested Alternate Text:
Plant with eighteen leaves collared; roots also shown.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Dissected V18 plant
Description/Suggested Alternate Text:
Plant completely dissected showing all visible leaves, stalk, ear shoots, and root system.

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Image(300dpi)
$48.00
Image(96dpi)
$16.80
Tassel from a V18 plant
Description/Suggested Alternate Text:
The tassel and uppermost stalk node from a V18 plant.

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Image(300dpi)
$16.00
Image(96dpi)
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Ear shoots from a V18 plant
Description/Suggested Alternate Text:
Ear shoots from stalk nodes 8 to 13 arranged in progression.

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Image(300dpi)
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Image(96dpi)
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Ears with silks from a V18 plant
Description/Suggested Alternate Text:
Three uppermost ears from stalk nodes 11, 12, and 13.

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Image(300dpi)
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Image(96dpi)
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Ears without silks from a V18 plant
Description/Suggested Alternate Text:
Three uppermost ears from stalk nodes 11, 12, and 13; silks have been removed.

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Image(300dpi)
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Tassel from a VT plant
Description/Suggested Alternate Text:
The tassel and uppermost stalk node from a VT plant.

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Tassel development timeline from V7 to VT
Description/Suggested Alternate Text:
Tassels from V7 to VT plants arranged in timeline progression showing the change in appearance that occurs.

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Tassel at VT before pollen shed has begun
Description/Suggested Alternate Text:
Close-up of tassel prior to pollen shed; tassel is angled.

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Tassel at VT after pollen shed has begun
Description/Suggested Alternate Text:
Close-up of tassel during pollen shed with anthers exserted; tassel is angled.

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Close-up of the tassel main stem
Description/Suggested Alternate Text:
Close-up of the main stem during pollen shed with the anthers exserted.

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Whole-season plant development timeline
Description/Suggested Alternate Text:
Plants spanning V2 to R6 arranged in timeline progression showing the change in appearance that occurs.

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Whole kernel development timeline
Description/Suggested Alternate Text:
Whole kernels from R1 to R6 arranged in timeline progression showing the change in appearance that occurs.

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Timeline of longitudinal cross-section of kernels
Description/Suggested Alternate Text:
Cross-section of kernels from R1 to R6 arranged in a timeline showing the change in appearance that occurs.

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Image(300dpi)
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Timeline of planar cross-section of kernels
Description/Suggested Alternate Text:
Cross-section of kernels from R1 to R6 arranged in a timeline showing the change in appearance that occurs.

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Timeline of ear cross-section
Description/Suggested Alternate Text:
Ears split in half to show cob and kernel development from R1 to R6; arranged in timeline progression.

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Image(300dpi)
$48.00
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$16.80
Ear with and without husk leaves from an R1 plant
Description/Suggested Alternate Text:
Primary ear shown twice: first, with husk leaves and silks and second, without.

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R1 plant
Description/Suggested Alternate Text:
Plant with uppermost ear silking and all leaves collared; roots also shown.

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Dissected R1 plant
Description/Suggested Alternate Text:
Plant completely dissected showing all visible leaves, stalk, ear shoots, and root system.

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Image(300dpi)
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Image(96dpi)
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Kernels from an R1 plant
Description/Suggested Alternate Text:
Three kernel views including whole and cross-sections.

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Ear shoots from an R1 plant
Description/Suggested Alternate Text:
Three uppermost ear shoots from an R1 plant; shows difference in size between the primary ear shoot and lower shoots.

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Image(300dpi)
$16.00
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$5.60
Ears with silks from an R1 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks.

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Image(300dpi)
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Ears without silks from an R1 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks removed.

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Image(300dpi)
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Kernels from an R2 plant
Description/Suggested Alternate Text:
Three kernel views including whole and cross-sections.

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Ear cross-section from an R2 plant
Description/Suggested Alternate Text:
Ear cross-section with glumes visible around each kernel.

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Ear with and without husk leaves from an R2 plant
Description/Suggested Alternate Text:
Primary ear shown twice: first, with husk leaves and silks and second, without.

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Image(300dpi)
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Ear shoots from an R2 plant
Description/Suggested Alternate Text:
Three uppermost ear shoots arranged to show the difference in size between the primary ear shoot and lower shoots.

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Ears with silks from an R2 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks; primary ear larger than lower ears.

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Ears without silks from an R2 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks removed; primary ear is larger than lower ears.

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Kernels from an R3 plant
Description/Suggested Alternate Text:
Three kernel views including whole and cross-sections.

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Image(96dpi)
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Ear with and without husk leaves from an R3 plant
Description/Suggested Alternate Text:
Primary ear shown twice: first, with husk leaves and silks and second, without.

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Image(300dpi)
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Ear shoots from an R3 plant
Description/Suggested Alternate Text:
Three uppermost ear shoots arranged to show the difference in size between the primary ear shoot and lower shoots.

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Image(300dpi)
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Image(96dpi)
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Ears with silks from an R3 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks; primary ear larger than lower ears.

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Ears without silks from an R3 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks removed; primary ear is larger than lower ears.

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Kernels from an R4 plant
Description/Suggested Alternate Text:
Four kernel views including whole and cross-sections.

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Image(300dpi)
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Image(96dpi)
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Ear with and without husk leaves from an R4 plant
Description/Suggested Alternate Text:
Primary ear shown twice: first, with husk leaves and silks and second, without.

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Image(300dpi)
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Ear shoots from an R4 plant
Description/Suggested Alternate Text:
Three uppermost ear shoots arranged to show the difference in size between the primary ear shoot and lower shoots.

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Image(300dpi)
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Image(96dpi)
$5.60
Ears with silks from an R4 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks; primary ear larger than lower ears.

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Image(300dpi)
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Ears without silks from an R4 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks removed; primary ear is larger than lower ears.

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Kernels from an R5 plant
Description/Suggested Alternate Text:
Four kernel views including whole and cross-sections.

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Image(300dpi)
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Ear with and without husk leaves from an R5 plant
Description/Suggested Alternate Text:
Primary ear shown twice: first, with husk leaves and silks and second, without.

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Ear shoots from an R5 plant
Description/Suggested Alternate Text:
Three uppermost ear shoots arranged to show the difference in size between the primary ear shoot and lower shoots.

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Ears with silks from an R5 plant
Three uppermost ears with silks; primary ear larger than lower ears

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Ears without silks from an R5 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks removed; primary ear is larger than lower ears.

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Kernels from an R6 plant
Description/Suggested Alternate Text:
Four kernel views including whole and cross-sections.

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R6 plant
Description/Suggested Alternate Text:
Plant with uppermost ear mature and leaves browning; roots also shown.

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Ear with and without husk leaves from an R6 plant
Description/Suggested Alternate Text:
Primary ear shown twice: first, with husk leaves and silks and second, without.

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Ear shoots from an R6 plant
Description/Suggested Alternate Text:
Three uppermost ear shoots arranged to show the difference in size between the primary ear shoot and lower shoots.

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Ears with silks from an R6 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks; primary ear larger than lower ears.

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Ears without silks from an R6 plant
Description/Suggested Alternate Text:
Three uppermost ears with silks removed; primary ear is larger than lower ears.

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Dry matter of individual components (graphic)
Description/Suggested Alternate Text:
Dry matter of five above-ground components shown from VE to R6.

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Cumulative dry matter (graphic)
Description/Suggested Alternate Text:
Total dry matter for the whole plant shown from VE to R6.

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Nitrogen content of individual components (graphic)
Description/Suggested Alternate Text:
Nitrogen accumulation of five above-ground components shown from VE to R6.

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Cumulative nitrogen (graphic)
Description/Suggested Alternate Text:
Total nitrogen accumulation for the whole plant shown from VE to R6.

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Phosphorus content of individual components (graphic)
Description/Suggested Alternate Text:
Phosphorus accumulation of five above-ground components shown from VE to R6.

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Cumulative phosphorus (graphic)
Description/Suggested Alternate Text:
Total phosphorus accumulation for the whole plant shown from VE to R6.

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Potassium content of individual components (graphic)
Description/Suggested Alternate Text:
Potassium accumulation of five above-ground components shown from VE to R6.

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Cumulative potassium (graphic)
Description/Suggested Alternate Text:
Total potassium accumulation for the whole plant shown from VE to R6.

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Emerged seedling in a field setting
Description/Suggested Alternate Text:
Plant emerged through the soil in an Iowa corn field.

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Field photograph of corn early-season (no sky showing)
Description/Suggested Alternate Text:
Iowa corn field with plants in a typical row width and plant density. 

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Upper plant canopy of a corn field
Description/Suggested Alternate Text:
Upper portion of plants in an Iowa corn field.

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Field photograph of young corn (with sky)
Description/Suggested Alternate Text:
Iowa corn field with plants in a typical row width and plant density.

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Corn vegetative and reproductive development stages (table)
Description/Suggested Alternate Text:
Official and common names for each developmental stage shown in Table form.

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Development staging and plant height conversion (table)
Description/Suggested Alternate Text:
The Leaf Collar Method compared with two other staging methods as well as plant height.

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Progression of grain moisture and dry matter during R5 (table)
Description/Suggested Alternate Text:
Progression of kernel milk line during R5 with approximate grain moisture, dry matter, growing degree days, and days necessary.

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Field photograph of corn mid-season (with sky)
Description/Suggested Alternate Text:
Iowa corn field with plants in a typical row width and plant density.

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Silking ear in field
Description/Suggested Alternate Text:
Field shot of a silking ear with sunlight on the silks.

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Rolling Iowa corn field (with sky)
Description/Suggested Alternate Text:
Iowa corn field with plants in a typical row width and plant density.

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Corn Growth and Development | Digital Media collection - 101 Images, Charts and Figures | 300 dpi
The Corn Growth and Development digital media collection contains all 101 images from the publication. All photos, charts, and diagrams display ©Iowa State University Extension and Outreach and are free of labels and watermarks.

Corn Growth and Development is an updated and expanded publication and includes whole plant photography, detailed descriptions of vegetative and reproductive development, and dry matter and nutrient accumulation figures.

Corn Growth and Development replaces the long-standing publication, How A Corn Plant Develops (SR 0048). 

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Zip file - 101 images (300dpi)
$2,652.00
Corn Growth and Development | Digital Media collection - 101 Images, Charts and Figures | 96 dpi
The Corn Growth and Development digital media collection contains all 101 images from the publication. All photos, charts, and diagrams display ©Iowa State University Extension and Outreach and are free of labels and watermarks.

Corn Growth and Development is an updated and expanded publication and includes whole plant photography, detailed descriptions of vegetative and reproductive development, and dry matter and nutrient accumulation figures.

Corn Growth and Development replaces the long-standing publication, How A Corn Plant Develops (SR 0048). 

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Getting Organized -- Personal and Financial Records
Can you find key information when you need it?

Would someone else be able to find essential information if you were away or ill?

Learn how to keep tabs on the many parts of your personal and financial matters with the forms presented in this electronic 65-page workbook. Download/ print the workbook and record essential financial and family information, lists of financial accounts, insurance policies and credit cards; names of professional advisers; health and employment records; location of important documents; and more...
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PDF
$0.00
Soybean Maturity Groups
Description/Suggested Alternate Text:
Maturity group adaptations where soybean are grown in the United States.

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Soybean Seedling
Description/Suggested Alternate Text:
Soybean seedling with plant anatomy labeled on a V1 soybean plant.

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Soybean leaf with folded leaflets
Description/Suggested Alternate Text:
Soybean leaf with folded leaflets.

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Soybean germination and emergence
Description/Suggested Alternate Text:
Soybean stage progression from planting through emergence and cotyledon stage.

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VE and VC stages - Soybean
Description/Suggested Alternate Text:
Soybean at the VE and VC stages.

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V2 plant - Soybean
Description/Suggested Alternate Text:
Soybean at the V2 stage.

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Soybean roots showing nodules
Description/Suggested Alternate Text:
Soybean root showing nodules.

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V2 root nodules with sliced nodule - Soybean
Description/Suggested Alternate Text:
Soybean at V2 stage showing root nodules including a nodule cross section.

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V4 plant - Soybean
Description/Suggested Alternate Text:
Soybean at the V4 stage.

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V6 plant - Soybean
Description/Suggested Alternate Text:
Soybean at the V6 stage.

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Soybean development and timing of growth
Description/Suggested Alternate Text:
Development and timing of soybean vegetative growth, flowering, pod development, and seed filing.

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Soybean flowering on racemes
Description/Suggested Alternate Text:
Soybean flowering on racemes.

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Fourth node of R3 plant - Soybean
Description/Suggested Alternate Text:
Fourth node from the uppermost node of soybean at R3 stage.

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R4 plant - Soybean
Description/Suggested Alternate Text:
Soybean at the R4 stage.

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Dissected young soybean pod
Description/Suggested Alternate Text:
Young dissected soybean pod.

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Sequence of early pod development
Description/Suggested Alternate Text:
Sequence of early pod development.

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