The Maricopa Agricultural Center (MAC)

The Maricopa field site is located at the the University of Arizona Maricopa Agricultural Center and USDA Arid Land Research Station in Maricopa, Arizona.

Overview of Experiments During the TERRA REF project

Season

Crop

Experiments

Populations(1)

Planting Date

Harvest

1

Sorghum

Density

BAP, RIL

2016-04-20

2016-07-16

2

Sorghum

Uniformity Trials(2)

Stay Green RILs F10

2016-07-27

2016-12-02

3

Durum Wheat

Diversity Panel

2016-12-15

2017-04-05

4

Sorghum

Late Season Drought

2017-04-13

2017-09-21

5

Durum Wheat

Diversity Panel

2017-11-20

2018-04-05

6

Sorghum

BAP

2018-04-20

2018-08-02

7

Sorghum

Hybrid Uniformity Blocks

Stay Green RILs, Mutants, F2 families

2018-08-23

2018-11-01

8

Durum Wheat

Uniformity Trials

Diversity Panel

2019-01-01

2019-03-31

9 S

Sorghum

GRASSL x RIO RILs

2019-05-01

2019-07-28

9 N(3)

Sorghum

SAP

2019-04-29

2019-09-05

(1) IL = Recombinant Inbred Lines, BAP = Bioenergy Association Panel, SAP = Sorghum Association Panel (2). Uniformity Trial = same lines planted in strips across field (3) In season 9 a second field ‘North’ was added, and separate trials were conducted

Season 1 sorghum (April - July 2016)

Three hundred thirty one lines were planted in Season 1.

Planting maps

Planting Design

Under scanner system

Experiment

Reps

Treatments

Experimental design

BAP

3

30 lines (12 PS, 12 sweet, 6 grain)

RCB with sorghum types nested in groups

Night illumination

3

5 illumination levels x 2 PS lines (with check line separating illumination levels)

RCB

Row #

3

6 adjacent plot scenarios: 3 lines (forage, sweet, PS) x 2 sides (east or west)

RCB but not balanced with all treatments in all reps

Biomass

3

5 sampling times x 3 lines (forage, sweet, PS)

RCB with sampling time as a repeated measure

Density

3

3 densities (5, 15, 30 cm) x 3 lines (forage, sweet, PS)

RCB

RILs

3

130 RILs plus 10 repeats of a single line/rep

Incomplete Block (row-column alpha lattice design)

Uniformity

17

2 lines (forage, PS)

None - Same line planted in single range

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