Mutual Effect of Gypsum and Potassium on Nutrient Productivity in the Alfalfa–Grass Sward—A Case Study
Abstract
:1. Introduction
2. Results
2.1. Content of Main Cations and the Yield of Alfalfa–Grass Sward
- 1.
- The content of K in the sward of the first cut (K1):
- 2.
- The K/(Ca + Mg) ratio:
2.2. Accumulation of Main Cations in Alfalfa–Grass Sward
2.3. The Content of Micronutrients
2.4. Accumulation of Main Micronutrients-Cations in Alfalfa–Grass Sward
2.5. Nutrient Unit Productivity—NUP
3. Discussion
3.1. Yield of Alfalfa–Grass Sward
3.2. The Content of Macronutrients vs. Total Yield
- (1)
- K content in the first cut of the sward;
- (2)
- Total amount of K accumulated in the sward.
3.3. The Content of Micronutrients vs. Total Yield
- (1)
- Total accumulation of Fe among the tested micronutrients determined the yield variability to 88%;
- (2)
- The Mn unit productivity was the main nutritional factor among the seven tested nutrients, affecting the total yield of the sward of the alfalfa–grass mixture.
4. Materials and Methods
4.1. Research Site
Nutrient | Mean | SD | CV.% | Nutrient | Mean | SD | CV. % | |
---|---|---|---|---|---|---|---|---|
K 2 | 0–30 | 88.2 L | 11.0 | 12.5 | Fe 4 | 241.3 M | 2.1 | 0.9 |
30–60 | 84.0 L | 12.9 | 15.4 | 220.1 M | 22.9 | 10.4 | ||
60–90 | 63.5 L | 6.4 | 10.1 | 183.7 M | 35.9 | 19.6 | ||
P 2 | 0–30 | 158.1 H | 5.4 | 3.4 | Mn 4 | 68.8 M | 1.3 | 2.0 |
30–60 | 159.9 H | 6.6 | 4.1 | 65.5 M | 6.9 | 10.6 | ||
60–90 | 90.8 L | 15.6 | 17.1 | 46.5 M | 11.9 | 25.5 | ||
0–30 | 164.0 VH | 11.2 | 6.8 | Zn 4 | 4.6 M | 0.1 | 3.1 | |
Mg 2 | 30–60 | 191.5 VH | 61.1 | 31.9 | 4.1 M | 1.1 | 26.2 | |
60–90 | 140.5 VH | 39.1 | 27.8 | 2.3 M | 0.6 | 24.6 | ||
0–30 | 690.4 VL | 121.1 | 17.5 | Cu 4 | 3.3 M | 0.2 | 6.5 | |
30–60 | 674.9 VL | 17.5 | 2.6 | 2.9 M | 0.2 | 7.4 | ||
Ca 3 | 60–90 | 450.7 VL | 38.5 | 8.5 | 2.2 M | 0.6 | 29.6 |
4.2. Weather Conditions
4.3. Experimental Design
- FGD gypsum (flue gas desulfurization) or synthetic gypsum—two levels (0 and 500 kg CaSO4 × 2 H2O ha−1); referred to as GYP─0 and GYP─500;
- Phosphorus and potassium treatments—five levels; referred to as AC, P60K0, P60K30, P60K60 and P60K120, respectively.
4.4. Plant Sampling and Measurements
4.5. Calculated Parameters
- Grass tetany ratio—CR
- Nutrient unit productivity—NUP
- K, Ca, Mg, Fe, Mn, Zn, Cu—nutrient content in the sward, % DM;
- TY—total yield of the alfalfa–grass sward, t ha−1;
- TA—total nutrient accumulation, kg or g ha−1;
- n—particular nutrient.
4.6. Statistical Analysis
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
Appendix A
Traits | K2 | K3 | Mg1 | Mg2 | Mg3 | Ca1 | Ca2 | Ca3 | CR1 | CR2 | CR3 | TY |
---|---|---|---|---|---|---|---|---|---|---|---|---|
K1 | 0.67 *** | 0.18 | 0.19 | 0.65 *** | −0.62 | −0.72 *** | 0.29 | 0.11 | 0.91 *** | −0.36 | 0.09 | 0.86 *** |
K2 | 1.00 | 0.43 * | 0.04 | 0.36 | −0.65 *** | −0.54 ** | 0.33 | −0.11 | 0.66 *** | −0.13 | 0.30 | 0.73 *** |
K3 | 1.00 | −0.745 *** | 0.18 | −0.10 | 0.09 | 0.70 *** | −0.67 *** | 0.23 | −0.58 ** | 0.90 *** | 0.25 | |
Mg1 | 1.00 | 0.12 | −0.32 | −0.27 | −0.52 ** | 0.70 *** | 0.05 | 0.44 * | −0.78 *** | 0.16 | ||
Mg2 | 1.00 | −0.40 * | −0.17 | 0.60 *** | 0.10 | 0.49 ** | −0.70 *** | 0.02 | 0.45 * | |||
Mg3 | 1.00 | 0.61 *** | −0.17 | 0.12 | −0.61*** | 0.05 | −0.17 | −0.76 *** | ||||
Ca1 | 1.00 | 0.11 | −0.15 | −0.84 *** | −0.07 | 0.01 | −0.71 *** | |||||
Ca2 | 1.00 | −0.35 | 0.26 | −0.82 *** | 0.54 ** | 0.29 | ||||||
Ca3 | 1.00 | −0.03 | 0.31 | −0.86 *** | −0.03 | |||||||
CR1 | 1.00 | −0.30 | 0.21 | 0.84 *** | ||||||||
CR2 | 1.00 | −0.44 * | −0.21 | |||||||||
CR3 | 1.00 | 0.20 |
Traits | K2a | K3a | Mg1a | Mg2a | Mg3a | Ca1a | Ca2a | Ca3a | TK | TMg | TCa | TY |
---|---|---|---|---|---|---|---|---|---|---|---|---|
K1a | 0.49 ** | 0.73 *** | 0.71 *** | 0.46 * | 0.41 * | 0.05 | 0.63 *** | 0.11 | 0.88 *** | 0.58 ** | 0.58 ** | 0.78 *** |
K2a | 1.00 | 0.44 * | 0.43 * | 0.26 | 0.23 | −0.24 | 0.03 | 0.06 | 0.65 *** | 0.34 | −0.02 | 0.60 *** |
K3a | 1.00 | 0.83 *** | 0.36 * | 0.83 *** | −0.24 | 0.41 * | 0.57 ** | 0.94 *** | 0.85 *** | 0.57 *** | 0.88 *** | |
Mg1a | 1.00 | 0.30 | 0.76 *** | −0.27 | 0.22 | 0.57 ** | 0.83 *** | 0.83 *** | 0.42 * | 0.91 *** | ||
Mg2a | 1.00 | 0.34 | −0.16 | 0.38 * | 0.22 | 0.43 * | 0.62 *** | 0.37 ** | 0.48 ** | |||
Mg3a | 1.00 | −0.55 ** | 0.04 | 0.88 *** | 0.68 *** | 0.93 *** | 0.37 * | 0.80 *** | ||||
Ca1a | 1.00 | 0.53 ** | −0.59 ** | −0.18 | −0.46 * | 0.41 * | −0.37 * | |||||
Ca2a | 1.00 | −0.14 | 0.46 * | 0.21 | 0.89 *** | 0.28 | ||||||
Ca3a | 1.00 | 0.39 * | 0.77 *** | 0.27 | 0.55 ** | |||||||
TK | 1.00 | 0.78 *** | 0.53 ** | 0.92 *** | ||||||||
TMg | 1.00 | 0.45 * | 0.89 *** | |||||||||
TCa | 1.00 | 0.42 * |
Traits | Fe2 | Fe3 | Mn1 | Mn2 | Mn3 | Zn1 | Zn2 | Zn3 | Cu1 | Cu2 | Cu3 | TY |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Fe1 | 0.44 * | −0.52 ** | 0.69 *** | 0.43 * | −0.56 ** | 0.09 | 0.14 | −0.20 | −0.15 | 0.01 | −0.56 ** | 0.53 ** |
Fe2 | 1.00 | −0.69 *** | 0.40 * | 0.65 *** | −0.75 *** | 0.34 | 0.42 * | 0.01 | −0.48 ** | −0.32 | −0.66 *** | 0.47 ** |
Fe3 | 1.00 | −0.69 *** | −0.81 *** | 0.85 *** | −0.63 *** | −0.65 *** | −0.01 | 0.38 * | 0.47 ** | 0.58 ** | −0.28 | |
Mn1 | 1.00 | 0.71 *** | −0.62 *** | 0.52 ** | 0.47 ** | −0.33 | −0.21 | −0.40 * | −0.46 * | 0.08 | ||
Mn2 | 1.00 | −0.70 *** | 0.78 *** | 0.76 *** | 0.03 | −0.24 | −0.39 * | −0.44 * | 0.15 | |||
Mn3 | 1.00 | −0.45 * | −0.49 ** | 0.03 | 0.59 ** | 0.49 ** | 0.75 *** | −0.47 ** | ||||
Zn1 | 1.00 | 0.85 *** | 0.03 | 0.04 | −0.41 * | −0.20 | −0.07 | |||||
Zn2 | 1.00 | 0.02 | 0.03 | −0.27 | −0.20 | −0.10 | ||||||
Zn3 | 1.00 | −0.11 | 0.18 | 0.27 | 0.13 | |||||||
Cu1 | 1.00 | 0.34 | 0.39 * | −0.41 * | ||||||||
Cu2 | 1.00 | 0.27 | 0.06 | |||||||||
Cu3 | 1.00 | −0.57 ** |
Traits | Fe2a | Fe3a | Mn1a | Mn2a | Mn3a | Zn1a | Zn2a | Zn3a | Cu1a | Cu2a | Cu3a | FeT | MnT | ZnT | CuT | TY |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Fe1a | 0.03 | 0.57 ** | 0.83 *** | −0.11 | 0.61 *** | 0.1 | −0.31 | 0.50 ** | 0.21 | −0.01 | 0.59 ** | 0.84 *** | −0.06 | 0.26 | 0.45 * | 0.69 *** |
Fe2a | 1 | 0.04 | 0.04 | 0.73 *** | −0.01 | 0.54 ** | 0.64 *** | 0.38 * | −0.48 ** | −0.14 | 0.36 | 0.40 * | 0.08 | 0.70 *** | −0.11 | 0.42 * |
Fe3a | 1 | 0.54 ** | −0.26 | 0.74 *** | 0.14 | −0.44 * | 0.58 ** | 0.31 | 0.03 | 0.68 *** | 0.81 *** | −0.30 | 0.27 | 0.58 *** | 0.76 *** | |
Mn1a | 1 | −0.02 | 0.55 ** | 0.22 | −0.25 | 0.36 | 0.2 | −0.01 | 0.45 * | 0.73 *** | 0.08 | 0.22 | 0.36 * | 0.67 *** | ||
Mn2a | 1 | −0.20 | 0.62 *** | 0.84 *** | 0.18 | −0.57 ** | −0.05 | 0.18 | 0.08 | 0.58 ** | 0.66 *** | −0.21 | 0.09 | |||
Mn3a | 1 | 0.22 | −0.36 * | 0.55 ** | 0.50 ** | 0.24 | 0.66 *** | 0.69 *** | 0.01 | 0.31 | 0.76 *** | 0.69 *** | ||||
Zn1a | 1 | 0.58 ** | 0.31 | 0.05 | 0.24 | 0.3 | 0.32 | 0.23 | 0.77 *** | 0.32 | 0.43 * | |||||
Zn2a | 1 | −0.07 | −0.40 * | 0.22 | −0.07 | −0.15 | 0.38 * | 0.53 ** | −0.14 | −0.09 | ||||||
Zn3a | 1 | −0.17 | −0.18 | 0.87 *** | 0.69 *** | −0.17 | 0.77 *** | 0.34 | 0.77 *** | |||||||
Cu1a | 1 | 0.53 ** | −0.11 | 0.09 | −0.26 | −0.27 | 0.72 *** | 0.17 | ||||||||
Cu2a | 1 | −0.10 | −0.04 | 0.02 | 0.04 | 0.70 *** | 0.05 | |||||||||
Cu3a | 1 | 0.78 *** | −0.05 | 0.68 *** | 0.48 ** | 0.78 *** | ||||||||||
FeT | 1 | −0.15 | 0.53 ** | 0.49 ** | 0.90 *** | |||||||||||
MnT | 1 | 0.11 | −0.17 | −0.31 | ||||||||||||
ZnT | 1 | 0.28 | 0.64 *** | |||||||||||||
CuT | 1 | 0.57 ** |
Traits | Mg | Ca | Fe | Mn | Zn | Cu | TY |
---|---|---|---|---|---|---|---|
K | 0.23 | 0.24 * | 0.36 | 0.75 *** | 0.21 | 0.12 | 0.73 *** |
Mg | 1.00 | 0.16 | 0.20 | 0.19 | 0.28 | 0.11 | 0.03 |
Ca | 1.00 | 0.05 | 0.14 | 0.64 *** | 0.39 * | 0.06 | |
Fe | 1.00 | 0.25 | 0.10 | 0.24 | 0.46 * | ||
Mn | 1.00 | 0.15 | 0.39 * | 0.91 *** | |||
Zn | 1.00 | 0.19 | 0.04 | ||||
Cu | 1.00 | 0.41 * |
Appendix B
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Factor | Factor | K1 | K2 | K3 | Mg1 | Mg2 | Mg3 | Ca1 | Ca2 | Ca3 | CR1 | CR2 | CR3 | TY |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Level | g kg−1 DM | mg kg−1 DM | - | t ha−1 | ||||||||||
Year | 2012 | 20.2 b | 18.3 c | 15.5 c | 3294 a | 2351 c | 2927 a | 7324 b | 3204 a | 6069 a | 2.0 b | 4.0 a | 1.9 c | 11.9 c |
(Y) | 2013 | 27.1 a | 24.5 a | 21.5 b | 3396 a | 3356 a | 2398 b | 5792 c | 11,198 b | 5989 a | 3.1 a | 1.9 b | 2.8 b | 15.6 a |
2014 | 21.1 b | 20.7 b | 28.6 a | 2308 b | 2780 b | 2932 a | 8801 a | 13,408 a | 3105 b | 2.1 b | 1.4 c | 5.3 a | 12.6 b | |
p | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | |
FGD (GYP) | 0 | 22.6 | 22.3 a | 22.5 a | 3013 | 2841 | 2737 | 7334 | 8725 b | 4871 | 2.3 | 2.5 a | 3.4 | 12.9 b |
kg ha−1 | 500 | 23.0 | 20.1 b | 21.3 b | 2986 | 2817 | 2768 | 7278 | 9815 a | 5237 | 2.4 | 2.2 b | 3.2 | 13.9 a |
p | ns | *** | * | ns | ns | ns | ns | * | ns | ns | * | ns | *** | |
PK | 0 | 20.4 b | 18.7 c | 20.2 b | 3124 a | 2977 a | 2894 a | 9051 a | 10,656 a | 6274 a | 1.9 c | 2.0 b | 2.5 b | 11.4 e |
Fertilization | PK-0 | 21.2 b | 19.6 bc | 19.6 b | 3212 a | 2949 a | 2909 a | 8336 ab | 8228 b | 5260 b | 1.9 c | 2.2 b | 2.6 b | 12.7 d |
(POT) | PK-30 | 23.3 a | 20.6 b | 20.7 b | 2827 b | 2864 ab | 2852 | 6845 bc | 9912 ab | 5151 b | 2.4 b | 2.0 b | 2.9 b | 13.5 c |
PK-60 | 24.0 a | 24.2 a | 24.2 a | 2995 ab | 2563b | 2541 b | 6489 c | 8130 b | 4205 c | 2.7 b | 3.5 a | 4.3 a | 14.5 b | |
PK-90 | 25.1 a | 22.8 a | 24.7 a | 2840 b | 2791 ab | 2567 b | 5808 c | 9424 ab | 4380 bc | 3.0 a | 2.2 b | 4.2 a | 14.9 a | |
p | *** | *** | *** | *** | ** | *** | *** | ** | *** | *** | *** | *** | *** | |
Source of variation for the studied interactions | ||||||||||||||
Y × GYP | ** | *** | ns | ns | * | ns | ns | ns | *** | ** | ns | * | ns | |
Y × POT | *** | * | * | ns | *** | * | *** | ns | *** | *** | * | *** | ns | |
GYP × POT | * | ns | * | ns | ** | * | ns | *** | *** | * | *** | ns | ns | |
Y × GYP × POT | ns | ns | ns | ns | ** | ns | ns | *** | *** | * | ** | ns | ns | |
Mean | 22.8 | 21.2 | 21.9 | 2999.6 | 2828.9 | 2752.6 | 7305.6 | 9270.0 | 5054.1 | 2.4 | 2.4 | 3.3 | 13.4 | |
Standard deviation | 4.1 | 3.8 | 6.1 | 543.7 | 557.2 | 366.3 | 2150.6 | 5196.0 | 2027.0 | 0.8 | 1.5 | 1.8 | 2.2 | |
Coefficient of variation, % | 18.2 | 17.9 | 28.1 | 18.1 | 19.7 | 13.3 | 29.4 | 56.1 | 40.1 | 32.7 | 62.2 | 55.1 | 16.2 |
Factor | Factor | K1a | K2a | K3a | Mg1a | Mg2a | Mg3a | Ca1a | Ca2a | Ca3a | TK | TMg | TCa |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Level | kg ha−1 | ||||||||||||
Year | 2012 | 63.8 b | 97.3 b | 56.3 c | 10.3 b | 12.3 b | 10.6 b | 22.7 b | 16.9 c | 22.1 b | 217.4 c | 33.1 b | 61.7 b |
(Y) | 2013 | 105.2 a | 101.8 a | 164.1 a | 13.1 a | 13.9 a | 18.2 a | 22.0 b | 45.9 b | 44.7 a | 371.1 a | 45.1 a | 112.6 a |
2014 | 101.1 a | 95.4 ab | 92.9 b | 10.8 b | 12.7 b | 9.3 c | 40.1 a | 61.6 a | 9.6 c | 289.4 b | 32.8 b | 111.2 a | |
p | *** | * | *** | *** | *** | * | *** | *** | *** | *** | *** | *** | |
FGD (GYP) | 0 | 84.4 b | 99.8 | 104.9 | 10.8 b | 12.5 | 12.2 b | 26.8 | 37.8 b | 24.2 b | 289.0 | 35.6 b | 88.8 b |
kg ha−1 | 500 | 95.7 a | 96.5 | 104.0 | 11.9 a | 13.4 | 13.2 a | 29.7 | 45.1 a | 26.7a | 296.2 | 38.4 a | 101.5 a |
p | *** | ns | ns | *** | * | ** | ns | ** | * | ns | *** | *** | |
PK | 0 | 67.0 c | 74.3 c | 81.8 c | 10.2 c | 11.9 b | 11.3 b | 30.5 a | 42.0 ab | 27.7 a | 223.1 d | 33.4 c | 100.1 |
Fertilization | PK-0 | 75.7 c | 86.0 b | 88.3 bc | 11.2 bc | 12.9 b | 12.9 ab | 30.3 a | 35.8 ab | 27.0 a | 250.0 c | 37.0 b | 93.1 |
(POT) | PK-30 | 92.2 b | 94.4 b | 96.9 b | 10.9 a–c | 13.2 b | 13.0 a | 27.6 a | 44.1 ab | 25.4 a | 283.5 b | 37.1 ab | 97.1 |
PK-60 | 105.3 a | 118.6 a | 125.2 a | 12.5 a | 12.4 ab | 12.8 a | 27.5 a | 38.2 b | 23.3 a | 349.2 a | 37.7 ab | 89.0 | |
PK-90 | 109.8 a | 117.6 a | 129.9 a | 12.0 ab | 14.4 a | 13.4 a | 25.4 a | 47.1 a | 23.9 a | 357.3 a | 39.9 a | 96.4 | |
p | *** | * | *** | *** | *** | ** | * | ** | * | *** | *** | ns | |
Source of variation for the studied interactions | |||||||||||||
Y × GYP | ns | *** | ** | ns | ** | ns | ns | ns | ** | *** | * | ns | |
Y × POT | *** | * | *** | ns | *** | ns | ns | ns | *** | *** | ** | * | |
GYP × POT | *** | ns | ** | ns | ** | ns | ns | *** | *** | ns | ns | ns | |
Y × GYP × POT | ** | ns | ns | ns | *** | ns | ns | *** | *** | ns | ns | *** |
Factor | Factor | Fe1 | Fe2 | Fe3 | Mn1 | Mn2 | Mn3 | Zn1 | Zn2 | Zn3 | Cu1 | Cu2 | Cu3 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Level | mg kg−1 DM | ||||||||||||
Year | 2012 | 40.8 b | 41.3 b | 33.3 b | 23.5 a | 30.2 a | 23.8 b | 34.5 a | 22.3 a | 19.7 | 4.8 a | 3.8 c | 4.3 b |
(Y) | 2013 | 63.2 a | 52.1 a | 30.8 b | 23.8 a | 29.9 a | 17.2 c | 25.8 b | 18.7 b | 20.6 | 4.3 b | 4.4 b | 3.3 c |
2014 | 34.6 c | 31.9 c | 57.2 a | 16.4 b | 16.1 b | 35.9 a | 17.5 c | 13.9 c | 20.3 | 5.0 a | 5.0 a | 4.7 a | |
p | *** | *** | *** | *** | *** | *** | *** | *** | ns | *** | *** | *** | |
FGD (GYP) | 0 | 45.8 | 42.2 | 42.9 | 21.1 | 25.3 | 25.5b | 26.4 | 18.7 | 20.3 | 4.9 a | 4.4 | 4.2 |
kg ha−1 | 500 | 46.6 | 41.3 | 38.0 | 21.4 | 25.5 | 25.8a | 25.5 | 17.9 | 20.1 | 4.5 b | 4.4 | 4.1 |
p | ns | ns | ns | ns | ns | * | ns | ns | ns | *** | ns | ns | |
PK | 0 | 43.7 b | 42.3 | 39.0 | 21.4 ab | 26.1 | 24.7 | 25.2 bc | 17.9 | 21.3 a | 4.4 b | 4.2 b | 4.3 a |
Fertilization | PK-0 | 54.5 a | 41.4 | 39.2 | 24.5 a | 27.9 | 28.2 | 25.7 bc | 18.8 | 17.9 b | 5.0 a | 4.3 b | 4.0 ab |
(POT) | PK-30 | 45.4 b | 42.1 | 41.1 | 21.2 ab | 23.9 | 26.1 | 23.6 c | 18.6 | 19.3 ab | 4.7 ab | 4.9 a | 4.3 ab |
PK-60 | 42.7 b | 41.4 | 41.6 | 19.7 b | 25.9 | 23.8 | 28.0 b | 18.1 | 21.4 a | 4.6 ab | 4.2 b | 3.9 b | |
PK-90 | 44.8 b | 41.6 | 41.3 | 19.5 b | 23.3 | 25.5 | 27.4 ab | 18.2 | 21.1 a | 4.6 ab | 4.3 b | 4.2 ab | |
p | ** | ns | ns | *** | ns | ns | *** | ns | ** | * | *** | * | |
Source of variation for the studied interactions | |||||||||||||
Y × GYP | *** | *** | ns | * | * | ns | *** | * | ns | ns | *** | ** | |
Y × POT | *** | * | *** | ns | ns | ns | *** | ns | *** | *** | *** | *** | |
GYP × POT | ** | ns | *** | ns | ns | ns | *** | ** | ** | * | ns | *** | |
Y × GYP × POT | ** | ns | * | ns | ns | ns | ** | ** | *** | * | ns | ** | |
Mean | 44.9 | 41.8 | 40.4 | 21.3 | 25.4 | 25.7 | 26.0 | 18.3 | 20.2 | 4.7 | 4.4 | 4.1 | |
Standard deviation | 12.7 | 9.9 | 13.2 | 4.6 | 7.5 | 8.6 | 7.9 | 4.1 | 3.5 | 0.6 | 0.9 | 0.8 | |
Coefficient of variation, % | 28.3 | 23.8 | 32.6 | 21.5 | 29.6 | 33.4 | 30.3 | 22.3 | 17.4 | 13.0 | 19.8 | 19.8 |
Factor | Factor | Fe1a | Fe2a | Fe3a | Mn1a | Mn2a | Mn3a | Zn1a | Zn2a | Zn3a | Cu1a | Cu2a | Cu3a | TFe | TMn | TZn | TCu |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Level | g ha−1 | ||||||||||||||||
Year | 2012 | 127.6 b | 216.7 a | 119.6 c | 72.9 b | 158.3 a | 86.2 c | 108.1 a | 117.1 a | 71.6 b | 14.8 b | 20.1 b | 15.6 b | 463.9 b | 77.6 a | 296.8 b | 50.5 b |
(Y) | 2013 | 242.3 a | 215.0 a | 234.7 a | 91.1 a | 123.4 b | 130.5 a | 99.9 b | 77.2 b | 156.1 a | 16.5 b | 18.1 c | 25.1 a | 692.0 a | 71.0 b | 333.2 a | 59.7 a |
2014 | 163.9 c | 146.5 b | 184.4 b | 77.5 b | 73.9 c | 115.7 b | 83.9 b | 63.6 c | 65.3 b | 23.6 a | 22.8 a | 15.2 b | 494.8 b | 68.4 b | 212.8 c | 61.6 a | |
p | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | |
FGD (GYP) | 0 | 168.5 b | 187.4 | 185.7 a | 75.5 b | 112.8 b | 107.0 | 94.3 b | 84.0 | 95.7 | 18.1 | 19.6 b | 18.5 | 541.7 | 71.9 | 273.9 b | 56.3 |
kg ha−1 | 500 | 187.4 a | 198.0 | 173.4 b | 85.5 a | 124.3 a | 114.6 | 100.3 a | 88.0 | 99.7 | 18.4 | 21.1 a | 18.8 | 558.8 | 72.7 | 288.0 a | 58.3 |
p | * | ns | * | *** | *** | ns | * | ns | ns | ns | * | ns | ns | ns | *** | ns | |
PK | 0 | 141.9 b | 167.9 c | 143.5 b | 68.7 b | 104.0 b | 92.6 a | 80.3 b | 70.8 c | 90.4 b | 14.5 c | 16.9 c | 16.7 b | 453.3 c | 72.1 b | 241.5 c | 48.1 c |
Fertilization | PK-0 | 193.8 a | 181.5 bc | 162.4 b | 85.8 a | 124.9 ab | 117.4 a | 86.3 b | 84.2 b | 82.5 b | 17.6 b | 19.2 bc | 17.6 b | 537.7 b | 80.6 a | 252.9 bc | 54.4 b |
(POT) | PK-30 | 178.6 a | 192.8 a–c | 187.9 a | 81.5 ab | 111.5 ab | 111.2 ab | 90.4 b | 87.8 ab | 90.3 b | 19.1 ab | 23.0 a | 18.6 b | 559.3 ab | 71.1 b | 268.4 b | 60.7 a |
PK-60 | 181.9 a | 204.3 ab | 199.8 a | 82.5 a | 129.4 a | 111.1 ab | 114.2 a | 90.7 ab | 116.5 a | 19.8 ab | 20.3 ab | 19.0 ab | 586.0 ab | 69.4 b | 321.4 a | 59.1 ab | |
PK-90 | 193.6 a | 217.1 a | 204.3 a | 84.0 a | 123.0 ab | 121.6 a | 115.2 a | 96.5 a | 108.8 a | 20.5 a | 22.4 a | 21.3 a | 614.9 a | 68.4 b | 320.4 a | 64.1 a | |
p | *** | *** | *** | *** | * | ** | *** | *** | *** | *** | *** | *** | *** | *** | *** | *** | |
Source of variation for the studied interactions | |||||||||||||||||
Y × GYP | ** | * | * | ns | *** | ns | ** | *** | ns | ns | *** | *** | ns | * | *** | *** | |
Y × POT | *** | * | *** | ns | * | * | ** | *** | *** | *** | *** | *** | ns | ** | *** | *** | |
GYP × POT | ns | ** | *** | ns | ns | ns | *** | ** | *** | ns | *** | *** | * | * | *** | * | |
Y × GYP × POT | ** | ** | * | ns | ns | ns | ns | ** | *** | ns | ** | ns | ns | ns | *** | ns |
Factor | Factor Level | K | Mg | Ca | Fe | Mn | Zn | Cu |
---|---|---|---|---|---|---|---|---|
kg Fodder DM kg−1 | kg Fodder DM g−1 | |||||||
Year (Y) | 2012 | 55.7 a | 363.7 b | 200.3 a | 25.8 b | 156.6 c | 40.6 c | 240.7 b |
2013 | 43.1 b | 347.4 b | 146.6 c | 23.0 b | 225.0 a | 47.8 b | 264.3 a | |
2014 | 44.9 b | 386.8 a | 117.5 b | 26.1 a | 186.5 b | 60.5 a | 209.1 c | |
p | *** | *** | *** | *** | *** | *** | *** | |
FGD (GYP) kg ha−1 | 0 | 47.1 b | 366.0 | 160.1 a | 24.4 b | 180.8 b | 48.7 b | 233.8 b |
500 | 48.7 a | 365.8 | 149.4 b | 25.6 a | 197.9 a | 50.6 a | 242.2 a | |
p | * | ns | * | * | *** | ** | *** | |
PK Fertilization (POT) kg ha−1 | AC | 53.2 a | 345.1 b | 134.8 c | 25.8 | 159.8 c | 49.9 ab | 240.1 ab |
PK-0 | 51.8 a | 346.8 b | 149.5 bc | 24.4 | 160.1 c | 52.0 a | 236.2 ab | |
PK-30 | 48.6 b | 369.3 ab | 148.1 bc | 24.9 | 192.8 b | 52.0 a | 227.5 b | |
PK-60 | 43.0 c | 392.0 a | 176.9 a | 25.1 | 212.1 a | 46.8 c | 248.7 a | |
PK-120 | 42.8 c | 376.5 a | 164.6 ab | 24.6 | 222.1 a | 47.4 bc | 237.7 ab | |
p | *** | *** | *** | ns | *** | *** | * | |
Source of variation for the studied interactions | ||||||||
Y × GYP | ** | * | * | ns | * | *** | ns | |
Y × POT | * | ** | ns | * | * | *** | ns | |
GYP × POT | ns | ns | ns | * | * | *** | ns | |
Y × GYP × POT | ns | ns | * | ns | ns | *** | ns |
Month | Average Air Temperature (°C) | Total Rainfall (mm) | ||||||
---|---|---|---|---|---|---|---|---|
2012 | 2013 | 2014 | 1961–2011 | 2012 | 2013 | 2014 | 1961–2011 | |
IV | 8.8 | 8.0 | 10.5 | 8.0 | 22.9 | 15.4 | 46.3 | 37.6 |
V | 14.9 | 14.4 | 13.1 | 13.2 | 77.2 | 69.8 | 73.5 | 56.9 |
VI | 16.0 | 17.3 | 16.1 | 16.6 | 163.0 | 125.3 | 42.0 | 61.6 |
VII | 19.2 | 20.1 | 21.5 | 18.2 | 197.6 | 67.3 | 83.1 | 79.4 |
VIII | 18.7 | 19.1 | 17.3 | 17.5 | 60.1 | 51.5 | 137.2 | 66.9 |
IX | 14.3 | 12.9 | 15.4 | 13.3 | 30.0 | 33.7 | 64.8 | 49.7 |
X | 8.2 | 10.3 | 10.9 | 8.5 | 10.9 | 10.9 | 39.8 | 40.8 |
IV–X average temperature | 14.3 | 14.6 | 15.0 | 13.6 | - | - | - | - |
IV–X rainfall | - | - | - | - | 561.7 | 373.9 | 486.7 | 392.9 |
Annual average temperature | 8.9 | 8.8 | 10.1 | - | - | - | - | - |
Annual rainfall | - | - | - | - | 811.5 | 516.5 | 632.5 | - |
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© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
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Zielewicz, W.; Grzebisz, W.; Biber, M. Mutual Effect of Gypsum and Potassium on Nutrient Productivity in the Alfalfa–Grass Sward—A Case Study. Plants 2023, 12, 2250. https://doi.org/10.3390/plants12122250
Zielewicz W, Grzebisz W, Biber M. Mutual Effect of Gypsum and Potassium on Nutrient Productivity in the Alfalfa–Grass Sward—A Case Study. Plants. 2023; 12(12):2250. https://doi.org/10.3390/plants12122250
Chicago/Turabian StyleZielewicz, Waldemar, Witold Grzebisz, and Maria Biber. 2023. "Mutual Effect of Gypsum and Potassium on Nutrient Productivity in the Alfalfa–Grass Sward—A Case Study" Plants 12, no. 12: 2250. https://doi.org/10.3390/plants12122250