000 | 00595nab|a22002177a|4500 | ||
---|---|---|---|
999 |
_c63480 _d63472 |
||
001 | 63480 | ||
003 | MX-TxCIM | ||
005 | 20210312225942.0 | ||
008 | 201118s2020||||xxk|||p|op||||00||0|eng|d | ||
022 | _a2048-3694 (Online) | ||
024 | 8 | _ahttps://doi.org/10.1002/fes3.187 | |
040 | _aMX-TxCIM | ||
041 | _aeng | ||
100 | 0 |
_aHuaxin Gao _919075 |
|
245 | 1 | 0 | _aYield and nitrogen uptake of sole and intercropped maize and peanut in response to N fertilizer input |
260 |
_aUnited Kingdom : _bWiley, _c2020. |
||
500 | _aPeer review | ||
500 | _aOpen Access | ||
520 | _aChinese agriculture needs to become less dependent on fertilizer inputs to enhance sustainability. Cereal/legume intercropping is a potential pathway to lower fertilizer inputs, but there is insufficient knowledge on the nitrogen (N) response in species mixtures. Here, we investigated N response in maize/peanut intercropping. Maize showed a stronger yield response to N input than peanut both in sole cropping and in intercropping, and so did sole crops relative to intercrops. Maize yield was the highest at the maximum level tested: 360 kg N/ha. Agronomic efficiency (AE) of sole maize was 7.8 kg/kg N input, averaged across five N levels (0, 90, 180, 270, and 360 kg/ha). Partial land equivalent ratios (pLERs) for maize decreased with N input, from 0.70 at zero to 0.64 at 360 kg/ha. Sole peanut showed an optimum yield response to N input, with the highest yield at 270 kg/ha and lower yield at 360 kg/ha. The average AE of sole peanut was 1.3 kg/kg. The pLER of peanut declined from 0.43 at zero to 0.32 at 360 kg/ha while the overall LER decreased from 1.13 to 0.96, indicating relative better performance of intercropping at low than at high N input. Apparent recovery (RE) for N was 27.2% for sole maize, 12.4% for sole peanut, and 7.2% for intercrops. Mean N uptake was 179 kg/ha in sole maize, 199 kg/ha in intercropping, and 264 kg/ha in sole peanut. Partial economic budgeting indicated that with the current low Chinese N fertilizer prices, gross margin is maximized with high N input in sole crops; however, for intercropping, the highest gross margin was attained at intermediate N inputs of 180 or 270 kg/ha. Fertilizer price incentives may facilitate a transition to intercropping at moderate N input in China. | ||
546 | _aText in English | ||
650 | 7 |
_aIntercropping _2AGROVOC _96135 |
|
650 | 7 |
_aLand equivalent ratio _2AGROVOC _910878 |
|
650 | 7 |
_aNitrogen _2AGROVOC _92912 |
|
650 | 7 |
_aYields _2AGROVOC _91313 |
|
700 | 0 |
_aWeiwei Meng _919076 |
|
700 | 0 |
_aChaochun Zhang _919077 |
|
700 | 1 |
_avan der Werf, W. _919078 |
|
700 | 0 |
_aZheng Zhang _919079 |
|
700 | 0 |
_aWan Shubo _917859 |
|
700 | 0 |
_aFusuo Zhang _919080 |
|
773 | 0 |
_gv. 9, no. 1, e187 _dUnited Kingdom : Wiley, 2020. _tFood and Energy Security _x2048-3694 _w10282225 |
|
856 | 4 |
_yClick here to access online _uhttps://doi.org/10.1002/fes3.187 |
|
942 |
_cJA _n0 _2ddc |