1. The crop is carefully tracked from seed purchase through consumption
Siemens Building Technologies
10-May-2001
The crop is carefully tracked from seed purchase through consumption
11/17/2018
© David W. Low & Associates, Ltd , All Rights Reserved
David W. Low & Assoc., Ltd.

2. Yield & quality reduction (crop loss) is modeled at every stage
Siemens Building Technologies
10-May-2001
Yield & quality reduction (crop loss) is modeled at every stage
11/17/2018
© David W. Low & Associates, Ltd , All Rights Reserved
David W. Low & Assoc., Ltd.

3. The twenty stages of vegetative growth are explicitly modeled, …
Siemens Building Technologies
10-May-2001
The twenty stages of vegetative growth are explicitly modeled, …
11/17/2018
© David W. Low & Associates, Ltd , All Rights Reserved
David W. Low & Assoc., Ltd.

4. … as well as the six stages of reproductive growth
Siemens Building Technologies
10-May-2001
… as well as the six stages of reproductive growth
11/17/2018
© David W. Low & Associates, Ltd , All Rights Reserved
David W. Low & Assoc., Ltd.

5. Farmer activities are carefully modeled and tracked
11/17/2018
© David W. Low & Associates, Ltd , All Rights Reserved

6. At each growth stage, the crop faces unique dangers, and so …
. . .
V10-V11: Demand for moisture & nutrients very high. Phosphorus and potassium should be applied very close to the plants, as they don’t travel well. Dry soil also inhibits nutrient uptake.
V12-V13: Moisture & nutrient deficiencies seriously reduce number of seeds and ear size. Care must be taken not to cultivate too close to plants to avoid root damage.
V14-V15: Most critical time for yield! Number of kernels mainly determined here. Dangers: nutrient & moisture deficiencies, injury (insects or hail) reduce kernel development.
. . .
11/17/2018
© David W. Low & Associates, Ltd , All Rights Reserved

7. … unique models will be built for growth, quality, and yield
. . .
V10-V11: Growth & loss rates depend on GDD, farmer’s management of soil moisture, phosphorus, & potassium content, as well as farmer’s ability to apply close to plants.
V12-V13: Growth & loss rates depend on GDD & greatly on farmer’s management of soil moisture & nutrient content. Loss rates also depend on farmer’s ability to cultivate without damaging roots.
V14-V15: Growth & loss rates depend on GDD & greatly on farmer’s management of soil moisture & nutrient content, as well as insects
. . .
11/17/2018
© David W. Low & Associates, Ltd , All Rights Reserved

8. Effects on yield of factors like training & morale can be important
11/17/2018
© David W. Low & Associates, Ltd , All Rights Reserved