Phase number | Rotation | 2016 | 2017 | 2018 | 2019 |
---|---|---|---|---|---|
1 | Conventional | P |
|
|
P |
2 | Conventional | C1 |
|
P | C1 |
3 | Conventional | C2 | P |
|
C2 |
4 | Bahiagrass | CS | B1 | B2 | PS |
5 | Bahiagrass | B1 | B2 | PS | CS |
6 | Bahiagrass | B2 | PS |
|
B1 |
7 | Bahiagrass | PS |
|
B1 | B2 |
2017 | 2018 | |
---|---|---|
Cotton planting | April 28 | April 27 |
Soil samplinga | ||
Preplant (Pi) | April 13 | April 19 |
Midseason (Pm) | June 19 | June 22 |
Harvest (Pf) | September 25 | September 25 |
Root sampling | June 19 | June 22 |
Cotton harvest | October 17 | October 8 |
Irrigation eventsb | May 10 | May 12 |
July 5 | June 26 | |
August 2 | July 12 | |
August 25 | July 18 |
2017 | 2018 | |||||||
Pia | Pm | Pf | Rf | Pi | Pm | Pf | Rf | |
ANOVA ( |
||||||||
Irrigation (I) | 0.14 | 0.19 | 0.29 | 0.96 | < 0.01** | 0.43 | 0.97 | 0.76 |
Crop phase (C) | < 0.01** | 0.02* | < 0.01** | 0.21 | < 0.01** | 0.05* | 0.76 | 0.03* |
I × C | 0.04* | 0.72 | 0.30 | 0.32 | 0.58 | 0.84 | 0.88 | 0.76 |
Nematicide (N) | 0.71 | 0.66 | 0.53 | 0.81 | 0.31 | 0.22 | 0.30 | 0.13 |
I × N | 0.68 | 0.42 | 0.15 | 0.98 | 0.78 | 0.10 | 0.27 | 0.74 |
C × N | 0.97 | 0.54 | 0.52 | 0.55 | 0.15 | 0.42 | 0.97 | 0.13 |
I × C × N | 0.34 | 0.87 | 0.63 | 0.42 | 0.99 | 0.25 | 0.55 | 0.76 |
2017 | 2018 | |||||||
Pia | Pm | Pf | Rf | Pi | Pm | Pf | Rf | |
ANOVA ( |
||||||||
Irrigation (I) | 0.33 | 0.60 | 0.93 | 0.31 | 0.06 | 0.28 | 0.22 | 0.36 |
Crop phase (C) | 0.56 | 0.03* | 0.19 | 0.90 | 0.07 | 0.15 | 0.04* | 0.43 |
I × C | 0.85 | 0.34 | 0.98 | 0.60 | 0.57 | 0.50 | 0.56 | 0.39 |
Nematicide (N) | 0.02* | 0.10 | < 0.01** | 0.75 | 0.02* | 0.01** | < 0.01** | 0.42 |
I × N | 0.07 | 0.64 | 0.52 | 0.39 | 0.57 | 0.44 | 0.03* | 0.50 |
C × N | 0.42 | 0.01** | 0.06 | 0.25 | 0.25 | 0.06 | 0.02* | 0.28 |
I × C × N | 0.64 | 0.09 | 0.29 | 0.37 | 0.40 | 0.15 | 0.09 | 0.24 |
2017a | 2018 | |||
---|---|---|---|---|
Seed yield | Lint yield | Seed yield | Lint yield | |
ANOVA ( |
||||
Irrigation (I) | 0.50 | 0.32 | 0.06 | 0.31 |
Crop phase (C) | 0.01** | 0.01** | 0.19 | 0.41 |
I × C | 0.64 | 0.72 | 0.53 | 0.62 |
Nematicide (N) | < 0.01** | < 0.01** | 0.03* | 0.06 |
I × N | 0.81 | 0.79 | 0.40 | 0.65 |
C × N | 0.01** | 0.09 | 0.05* | 0.07 |
I × C × N | 0.45 | 0.58 | 0.07 | 0.22 |
Total |
||||||||
---|---|---|---|---|---|---|---|---|
2017 | 2018 | |||||||
Pia | Pm | Pf | Rf | Pi | Pm | Pf | Rf | |
ANOVA ( |
||||||||
Irrigation (I) | 0.76 | 0.75 | 0.61 | 0.61 | 0.27 | 0.49 | 0.25 | 0.21 |
Crop phase (C) | < 0.01** | < 0.01** | < 0.01** | 0.02* | < 0.01** | < 0.01** | < 0.01** | < 0.01** |
I × C | 0.35 | 0.46 | 0.02* | 0.79 | 0.05* | 0.82 | 0.39 | 0.16 |
Nematicide (N) | 0.96 | 0.47 | 0.13 | 0.78 | 0.01** | 0.22 | 0.13 | 0.78 |
I × N | 0.89 | 0.70 | 0.22 | 0.62 | 0.10 | 0.72 | 0.53 | 0.16 |
C × N | 0.18 | 0.75 | 0.84 | 0.50 | 0.29 | 0.90 | 0.74 | 0.41 |
I × C × N | 0.67 | 0.80 | 0.65 | 0.90 | 0.18 | 0.84 | 0.53 | 0.34 |
Ratio of |
||||||||
2017 | 2018 | |||||||
Pia | Pm | Pf | Pi | Pm | Pf | |||
ANOVA ( |
||||||||
Irrigation (I) | 0.11 | 0.34 | 0.15 | 0.11 | 0.46 | 0.19 | ||
Crop phase (C) | 0.05* | 0.18 | 0.01** | 0.02* | 0.28 | 0.03* | ||
I × C | 0.93 | 0.38 | 0.92 | 0.10 | 0.36 | 0.43 | ||
Nematicide (N) | 0.95 | 0.61 | < 0.01** | 0.40 | 0.56 | 0.75 | ||
I × N | 0.18 | 0.84 | 0.08 | 0.37 | 0.43 | 0.95 | ||
C × N | 0.87 | 0.50 | 0.02* | 0.72 | 0.64 | 0.83 | ||
I × C × N | 0.97 | 0.37 | 0.06 | 0.43 | 0.73 | 0.94 |