Intercropping with wheat lowers nutrient uptake and biomass accumulation of maize, but increases photosynthetic rate of the ear leaf

AoB Plants
Fang GouWopke Van Der Werf

Abstract

Intercropping is an ancient agricultural practice that provides a possible pathway for sustainable increases in crop yields. Here, we determine how competition with wheat affects nutrient uptake (nitrogen and phosphorus) and leaf traits, such as photosynthetic rate, in maize. In a field experiment, maize was planted as a sole crop, in three different intercrop configurations with wheat (a replacement intercrop and two add-row intercrops), and as a skip-row system with one out of each three maize rows omitted. Nitrogen and phosphorus uptake were determined at flowering and maturity. Specific leaf area, leaf nitrogen concentration, chlorophyll content and photosynthetic rate of the ear leaf were determined at flowering. Nitrogen and phosphorus concentrations were significantly lower in intercropped maize than in sole maize and skip-row maize at flowering, but these differences were smaller at maturity. At flowering, specific leaf area was significantly greater in intercrops than in skip-row maize. Leaf nitrogen concentration was significantly lower in add-row intercrops than in sole maize, skip-row maize or maize in the replacement intercrop. Leaf chlorophyll content was highest in sole and skip-row maize, intermediate in maize i...Continue Reading

References

Oct 8, 2005·Oecologia·Long LiSally E Smith
Dec 7, 2013·Journal of Experimental Botany·Junqi ZhuJochem B Evers
Sep 13, 2014·Global Change Biology·Wen-Feng CongWopke Van Der Werf
Jan 24, 2015·Journal of Speech, Language, and Hearing Research : JSLHR·Jill GilkersonKeith Topping

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Citations

Nov 23, 2020·Environmental Science and Pollution Research International·Senlin YangLianghua Chen

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Software Mentioned

R
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R Core Team

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