Effect of sowing date on water uptake patterns of maize and soybean in intercropping systems using stable isotopes
Intercropping is a beneficial agricultural approach that enhances crop productivity and water use efficiency. However, the relationship between sowing date and water uptake in intercropping is not yet well understood. A two-year field trial was conducted to explore the impacts of sowing date on wate...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Agricultural Water Management |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0378377423003396 |
| _version_ | 1797706886533873664 |
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| author | Cong Zhang Yuanyuan Ren Minfei Yan Zhan He Yinglong Chen Suiqi Zhang |
| author_facet | Cong Zhang Yuanyuan Ren Minfei Yan Zhan He Yinglong Chen Suiqi Zhang |
| author_sort | Cong Zhang |
| collection | DOAJ |
| description | Intercropping is a beneficial agricultural approach that enhances crop productivity and water use efficiency. However, the relationship between sowing date and water uptake in intercropping is not yet well understood. A two-year field trial was conducted to explore the impacts of sowing date on water uptake patterns of maize and soybean across different seasons using stable isotopes δ18O and δ2H in plant and soil water along with MixSIAR modeling. Three sowing times with intercropping systems (two-row maize and four-row soybean) were used: M2S4 (maize sowed at the same time as soybean), M2s4 (soybean sowed 4 weeks later than maize), and m2S4 (maize sowed 4 weeks later than soybean). Maize water absorption depths in intercrop systems were 0–20 cm (47.2 %), 20–150 cm (56.5 %), and 70–200 cm (72.9 %) for M2S4, 0–20 cm (45.1 %), 70–200 cm (59.8 %), and 70–150 cm (59.2 %) for M2s4, and 0–20 cm (51.7 %), 20–150 cm (58.5 %), and 20–150 cm (63.1 %) for m2S4 at jointing, silking, and maturity stages, respectively. Soybean water uptake depth was 0–20 cm for intercrops with different sowing dates. Delayed sowing of intercropped soybean or maize had no effect on the soybean water uptake depth. With delayed soybean sowing, the main water absorption depth during the growth period of intercropped maize was first deeper and then shallower. With delayed maize sowing, the water absorption depth of intercropped maize became shallower in the late growth stage. Land (1.01–1.34) and water (0.93–1.33) equivalent ratios indicated variations in the impact of intercropping sowing dates on yield and water use efficiency with the greatest ratios observed in M2s4 intercrop. The M2s4 model is considered to be the optimal planting time for intercropping systems on the Loess Plateau. |
| first_indexed | 2024-03-12T05:59:00Z |
| format | Article |
| id | doaj.art-dd04f2fc41ef466ab1405adfe66ce3b0 |
| institution | Directory Open Access Journal |
| issn | 1873-2283 |
| language | English |
| last_indexed | 2024-03-12T05:59:00Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
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| series | Agricultural Water Management |
| spelling | doaj.art-dd04f2fc41ef466ab1405adfe66ce3b02023-09-03T04:23:24ZengElsevierAgricultural Water Management1873-22832023-10-01288108474Effect of sowing date on water uptake patterns of maize and soybean in intercropping systems using stable isotopesCong Zhang0Yuanyuan Ren1Minfei Yan2Zhan He3Yinglong Chen4Suiqi Zhang5State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China; College of Forestry, Northwest Agriculture and Forestry University, Yangling, Shaanxi, ChinaGeography and Environmental Engineering Department, Baoji University of Arts and Sciences, Baoji 721013, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China; College of Forestry, Northwest Agriculture and Forestry University, Yangling, Shaanxi, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China; College of Forestry, Northwest Agriculture and Forestry University, Yangling, Shaanxi, ChinaThe UWA Institute of Agriculture, and School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, AustraliaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China; Correspondence to: State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China.Intercropping is a beneficial agricultural approach that enhances crop productivity and water use efficiency. However, the relationship between sowing date and water uptake in intercropping is not yet well understood. A two-year field trial was conducted to explore the impacts of sowing date on water uptake patterns of maize and soybean across different seasons using stable isotopes δ18O and δ2H in plant and soil water along with MixSIAR modeling. Three sowing times with intercropping systems (two-row maize and four-row soybean) were used: M2S4 (maize sowed at the same time as soybean), M2s4 (soybean sowed 4 weeks later than maize), and m2S4 (maize sowed 4 weeks later than soybean). Maize water absorption depths in intercrop systems were 0–20 cm (47.2 %), 20–150 cm (56.5 %), and 70–200 cm (72.9 %) for M2S4, 0–20 cm (45.1 %), 70–200 cm (59.8 %), and 70–150 cm (59.2 %) for M2s4, and 0–20 cm (51.7 %), 20–150 cm (58.5 %), and 20–150 cm (63.1 %) for m2S4 at jointing, silking, and maturity stages, respectively. Soybean water uptake depth was 0–20 cm for intercrops with different sowing dates. Delayed sowing of intercropped soybean or maize had no effect on the soybean water uptake depth. With delayed soybean sowing, the main water absorption depth during the growth period of intercropped maize was first deeper and then shallower. With delayed maize sowing, the water absorption depth of intercropped maize became shallower in the late growth stage. Land (1.01–1.34) and water (0.93–1.33) equivalent ratios indicated variations in the impact of intercropping sowing dates on yield and water use efficiency with the greatest ratios observed in M2s4 intercrop. The M2s4 model is considered to be the optimal planting time for intercropping systems on the Loess Plateau.http://www.sciencedirect.com/science/article/pii/S0378377423003396Water-uptake patternSowing dateIntercropMixSIAR model |
| spellingShingle | Cong Zhang Yuanyuan Ren Minfei Yan Zhan He Yinglong Chen Suiqi Zhang Effect of sowing date on water uptake patterns of maize and soybean in intercropping systems using stable isotopes Agricultural Water Management Water-uptake pattern Sowing date Intercrop MixSIAR model |
| title | Effect of sowing date on water uptake patterns of maize and soybean in intercropping systems using stable isotopes |
| title_full | Effect of sowing date on water uptake patterns of maize and soybean in intercropping systems using stable isotopes |
| title_fullStr | Effect of sowing date on water uptake patterns of maize and soybean in intercropping systems using stable isotopes |
| title_full_unstemmed | Effect of sowing date on water uptake patterns of maize and soybean in intercropping systems using stable isotopes |
| title_short | Effect of sowing date on water uptake patterns of maize and soybean in intercropping systems using stable isotopes |
| title_sort | effect of sowing date on water uptake patterns of maize and soybean in intercropping systems using stable isotopes |
| topic | Water-uptake pattern Sowing date Intercrop MixSIAR model |
| url | http://www.sciencedirect.com/science/article/pii/S0378377423003396 |
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