John Kempf discusses how to reach the maximum genetic capability of your crop by recognizing critical points of influence. All crops have cycles during which either vegetative or reproductive energy is dominant in the plant. At the peak moment of each cycle, and again when the cycle switches from vegetative to reproductive, plants enter a critical window of time at which the correct support is paramount for yields and quality. In this deck, learn about these critical points of influence, how to observe their occurrence in crops, and how to influence outcomes by applying nutrition and other inputs differently at each critical point. See the full presentation at https://youtu.be/hUYwX9FlcPY.

1. NUTRITION MANAGEMENT AT CRITICAL POINTS OF INFLUENCE
A Webinar Hosted by AEA Featuring John Kempf

2. Critical Points of Influence
Male | Female
Expansion | Contraction
Vegetative | Reproductive
Growth occurs in cycles of alternating dominance.
Critical Points of Influence occur when the hormone
balance shifts from reproductive dominance to
vegetative dominance.

3. Reproductive Bud Initiation
1. Number of buds
2. Bud uniformity
3. Bud size and energy
4. Blossom size
5. Blossom timing
What can we impact during this CPI?

4. Critical Minerals
1. Calcium
2. Manganese
3. Boron
4. Zinc
5. Copper
6. Urea
7. Seaweed

5. Blossom/Pollination
1. Number of blossoms pollinated
2. Earliness/speed of pollination
3. Condensed pollination window
4. Pollen strength
5. Pollen tube strength
What can we impact during this CPI?

6. Critical Minerals
1. Calcium
2. Manganese
3. Boron
4. Zinc
5. Copper
6. Seaweed

7. Cell Division
1. The development of as many high
integrity cells as possible
What can we impact during this CPI?

8. Critical Minerals
1. Manganese
2. Potassium
3. Calcium
4. Boron

9. Fruit/Grain Fill
1. Quantity of sugar transported to fruit
or grain
2. Quantity of sugar produced in leaves
3. High fruit or grain quality parameters
What can we impact during this CPI?

10. Critical Minerals
1.Potassium
2. Nitrogen
3. Manganese
4. Zinc
5. Boron
6. Calcium
7. Copper

11. Ripening
1. The production of a ripe crop on
green plants with proper senescence
2. Coloring, aroma, flavor, and related
quality characteristics
3. Earlier or delayed senescence
What can we impact during this CPI?

12. Critical Minerals
1. Boron
2. Cobalt
3. Magnesium
4. Sulfur
5. Molybdenum

13. Vegetative Growth
1. Rapid vegetative growth with tightly spaced
internodes, high-carbon wood on perennial
crops for higher future reproductive potential
2. Speed and mass of vegetative growth without
the presence of nitrates for disease and insect
resistance and higher-quality yield
What can we impact during this CPI?

14. Critical Minerals
1. Calcium
2. Boron

15. For more in-depth
agronomic information
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