2021年2月15日 · About 30% of the observed A-horizon loss has occurred on concave topography where water erosion is expected to dominate soil loss. The remaining ∼70% of landscape with B-horizon exposure occurs on convex hilltops and slopes, where tillage is expected to be a more important mechanism of soil loss than erosion by water .

If corn has been planted, standing water or saturated soil conditions in areas of a field can produce impacts now or later for corn. Periods of early-season water saturation can cause immediate problems for small corn plants, and can have season-long implications as well.

2021年4月14日 · Now a study led by geomorphologist Evan Thaler and published in Proceedings of the National Academy of Science s in February attempts to answer the elusive question of how much topsoil has been...

2021年3月1日 · The main cause of soil erosion isn’t water runoff; it’s tillage — disturbing the soil in preparation for planting. The solution is a familiar one: no-till agriculture, which means direct seeding through the stubble of last year’s crops.

2024年1月11日 · Information about throughfall, stemflow, and canopy interception loss is essential for the water use efficiency of crops and the dynamic processes of water erosion. A two-year field experiment was conducted under natural rainfall conditions to observe the characteristics and factors that affect throughfall, stemflow, and canopy interception ...

2021年2月1日 · In this paper, a modeling framework that coupled physically based models, Water Erosion Prediction Project (WEPP) and MIKE SHE/MIKE 11, was presented. Daily soil loss at a grid-scale resolution was determined using WEPP and the transport processes were simulated using a generic advection dispersion equation in MIKE SHE/MIKE 11 models.

2022年9月1日 · Proper timing of cover crop practices can improve soil water recharge in corn cropping systems. Climate change induced rainfall patterns have increased environmental extremities such as severe droughts and floods which can affect volumetric soil moisture content (θ), thus food security.

3 天之前 · A corn plant knows how to find water in soil with the very tips of its roots, but some varieties, including many used for breeding high-yielding corn in the U.S., appear to have lost a portion of ...

Three levels of erosion (slight, moderate, and severe) of a Dubuque silt loam (fine-silty, mixed, mesic, Typic Hapludalfs) were investigated, as defined by the percent of surface soil remaining. Corn was grown from 1985 to 1999 with small differences in grain yield among erosion levels, but with a long-term trend of decreasing yield with erosion.

3 天之前 · The development of modern corn grown in the U.S., a major crop often grown on highly fertile agricultural lands, may have weakened the plants’ water-seeking root response, the researchers said. They also noted that comparisons to field studies showed that stronger hydropatterning was linked to greater root depth.