Nitrogen Transfer to Forage Crops from a Caragana Shelterbelt
Abstract
:1. Introduction
2. Experimental Section
2.1. Experimental Setup
Distance (m) | pH | EC (mS cm–1) | P | NO3− | NH4+ | S | OC | K+ | Mg2+ | Ca2+ |
---|---|---|---|---|---|---|---|---|---|---|
mg kg−1 | g kg−1 | cmol (+) kg−1 | ||||||||
0–15 cm | ||||||||||
2 | 8.04 † | 0.26 | 22.04 | 8.27 | 3.72 | 5.66 | 7.55 | 0.70 | 1.86 | 9.83 |
4 | 8.05 | 0.17 | 26.21 | 2.40 | 3.09 | 5.15 | 7.05 | 0.62 | 1.66 | 9.29 |
6 | 8.06 | 0.19 | 21.34 | 1.52 | 2.85 | 4.47 | 7.00 | 0.52 | 1.98 | 9.50 |
15 | 8.01 | 0.22 | 27.23 | 2.23 | 3.36 | 7.65 | 7.20 | 0.63 | 2.21 | 7.75 |
20 | 7.93 | 0.26 | 31.94 | 2.99 | 3.77 | 9.00 | 7.45 | 0.65 | 2.44 | 7.27 |
15–30 cm | ||||||||||
2 | 8.21 | 0.20 | 6.40 | 1.50 | 4.27 | 4.18 | 4.50 | 0.36 | 2.28 | 9.07 |
4 | 8.31 | 0.16 | 6.31 | 1.02 | 3.74 | 4.25 | 5.10 | 034 | 2.06 | 9.32 |
6 | 8.37 | 0.15 | 11.48 | 1.25 | 3.85 | 4.29 | 4.95 | 0.33 | 2.11 | 8.86 |
15 | 8.17 | 0.20 | 9.50 | 1.17 | 3.32 | 6.55 | 5.90 | 0.34 | 2.35 | 7.79 |
20 | 8.26 | 0.23 | 8.51 | 0.87 | 3.07 | 11.16 | 5.15 | 0.29 | 2.91 | 8.21 |
30–45 cm | ||||||||||
2 | 6.40 | 0.13 | 5.36 | 0.22 | 3.33 | 3.37 | 2.45 | 0.23 | 2.58 | 6.13 |
4 | 8.49 | 0.18 | 9.77 | 0.29 | 3.94 | 4.18 | 3.00 | 0.31 | 3.10 | 8.34 |
6 | 8.45 | 0.20 | 6.09 | 0.67 | 3.66 | 4.11 | 3.55 | 0.24 | 2.70 | 8.27 |
15 | 8.44 | 0.21 | 5.64 | 0.49 | 3.30 | 7.80 | 3.45 | 0.23 | 2.75 | 7.90 |
20 | 8.56 | 0.29 | 5.16 | 0.46 | 4.25 | nd ‡ | 3.80 | 0.25 | 3.34 | 7.79 |
3. Results and Discussion
Caragana | Triticale | Oats | ||||
---|---|---|---|---|---|---|
Distance (m) | δ15N (per mil) | Std Dev | δ15N (per mil) | Std Dev | δ15N (per mil) | Std Dev |
0 | 4.55 | 0.44 | - | - | - | - |
2 | - | - | 7.03 | 0.65 | 8.175 | 1.20 |
4 | - | - | 7.38 | 0.44 | 5.845 | 0.75 |
6 | - | - | 8.22 | 0.78 | 6.268 | 0.18 |
15 | - | - | 8.99 | 1.91 | 6.285 | 0.19 |
20 | - | - | 10.83 | 1.19 | 7.935 | 1.18 |
P-value | 0.0028 | 0.0047 |
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Issah, G.; Kimaro, A.A.; Kort, J.; Knight, J.D. Nitrogen Transfer to Forage Crops from a Caragana Shelterbelt. Forests 2015, 6, 1922-1932. https://doi.org/10.3390/f6061922
Issah G, Kimaro AA, Kort J, Knight JD. Nitrogen Transfer to Forage Crops from a Caragana Shelterbelt. Forests. 2015; 6(6):1922-1932. https://doi.org/10.3390/f6061922
Chicago/Turabian StyleIssah, Gazali, Anthony A. Kimaro, John Kort, and J. Diane Knight. 2015. "Nitrogen Transfer to Forage Crops from a Caragana Shelterbelt" Forests 6, no. 6: 1922-1932. https://doi.org/10.3390/f6061922