Uncovering the Footprints of Erosion by On-Farm Maize Cultivation in a Hilly Tropical Landscape
Abstract
:1. Introduction
2. Results and Discussion
Slope Category (Inclination %) | ||||
---|---|---|---|---|
0–10 | 11–30 | >31 | ||
Soil horizons | A | 28 a (53) | 24 a (38) | 6 b (45) |
B | 42 m (43) | 56 n (60) | 44 m (68) | |
C | 39 x (23) | 34 x (17) | 29 x (28) |
Inclination (%) | SOM (g kg−1) | Relative Change (%) | TN (mg kg−1) | Relative Change (%) | P (mg kg−1) | Relative change (%) | K (mg kg−1) | Relative Change (%) | BD (g cm−3) | Relative Change (%) |
---|---|---|---|---|---|---|---|---|---|---|
0–10, n = 61 | 18.2 a (0.59) | 100 | 12.6 a (0.35) | 100 | 25.3 a (1.60) | 100 | 18.3 a (0.87) | 100 | 1.50 a (0.015) | 100 |
11–20, n = 27 | 18.0 a (0.74) | 99 | 11.7 ab (0.36) | 93 | 27.0 a (1.18) | 107 | 18.6 a (1.05) | 101 | 1.53 a (0.023) | 102 |
21–30, n = 13 | 15.4 ab (1.47) | 85 | 10.1 ab (0.69) | 80 | 25.2 a (1.90) | 100 | 14.2 a (1.57) | 78 | 1.56 a (0.035) | 104 |
31–40, n = 14 | 13.4 b (1.16) | 73 | 10.9 ab (0.69) | 87 | 23.7 a (2.11) | 94 | 13.8 a (1.30) | 75 | 1.65 a (0.044) | 110 |
41–50, n = 7 | 12.5 b (1.46) | 68 | 11.1 ab (0.83) | 89 | 24.8 a (3.27) | 98 | 14.2 a (0.97) | 77 | 1.68 a (0.067) | 112 |
51–60, n = 3 | 11.5 b (0.80) | 63 | 8.1 ab (2.36) | 64 | 21.8 a (2.77) | 86 | 11.5 a (3.37) | 63 | 1.71 a (0.112) | 114 |
61–70, n = 2 | 10.5 b (1.54) | 58 | 8.0 ab (2.11) | 64 | 20.4 a (2.22) | 81 | 11.9 a (2.46) | 65 | 1.74 a (0.040) | 116 |
Inclination (%) | Yield (t ha−1) | |||||
---|---|---|---|---|---|---|
NPK | Relative Change (%) | PK | Relative Change (%) | ZERO | Relative Change (%) | |
0–10 (n = 61) | 3.82 a (0.09) | 100 | 2.38 a (0.07) | 100 | 1.32 a (0.06) | 100 |
11–20 (n = 27) | 3.34 ab (0.13) | 87 | 2.20 ab (0.12) | 93 | 1.07 ab (0.07) | 81 |
21–30 (n = 13) | 3.21 ab (0.24) | 84 | 1.96 ab (0.15) | 82 | 0.97 ab (0.10) | 74 |
31–40 (n = 14) | 3.01 b (0.20) | 79 | 1.85 b (0.15) | 78 | 0.93 b (0.09) | 70 |
41–50 (n = 7) | 2.70 b (0.41) | 71 | 1.51 b (0.18) | 64 | 0.71 b (0.12) | 54 |
3. Experimental Section
3.1. Experimental Sites
3.2. Experimental Set up and Plot Management
3.3. Measurements
3.4. Data Analysis
4. Conclusions
Conflicts of Interest
References
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Egodawatta, C.; Stamp, P.; Sangakkara, R. Uncovering the Footprints of Erosion by On-Farm Maize Cultivation in a Hilly Tropical Landscape. Agriculture 2013, 3, 556-566. https://doi.org/10.3390/agriculture3030556
Egodawatta C, Stamp P, Sangakkara R. Uncovering the Footprints of Erosion by On-Farm Maize Cultivation in a Hilly Tropical Landscape. Agriculture. 2013; 3(3):556-566. https://doi.org/10.3390/agriculture3030556
Chicago/Turabian StyleEgodawatta, Chaminda, Peter Stamp, and Ravi Sangakkara. 2013. "Uncovering the Footprints of Erosion by On-Farm Maize Cultivation in a Hilly Tropical Landscape" Agriculture 3, no. 3: 556-566. https://doi.org/10.3390/agriculture3030556