Different Responses in Root Water Uptake of Summer Maize to Planting Density and Nitrogen Fertilization.

ABSTRACT: Modifying farming practices combined with breeding has the potential to improve water and nutrient use efficiency by regulating root growth, but achieving this goal requires phenotyping the roots, including their architecture and ability to take up water and nutrients from different soil layers. This is challenging due to the difficulty of in situ root measurement and opaqueness of the soil. Using stable isotopes and soil coring, we calculated the change in root water uptake of summer maize in response to planting density and nitrogen fertilization in a 2-year field experiment. We periodically measured root-length density, soil moisture content, and stable isotopes δ¹⁸O and δD in the plant stem, soil water, and precipitation concurrently and calculated the root water upta

SUBMITTER: Gao Y 

PROVIDER: S-EPMC9263914 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature