What is more effective at sequestering carbon -- planting trees or cover-crops on soil (and using other regenerative techniques)?

"We need all the solutions" says Project Drawdown. Trees drawdown CO2 through photosynthesis and safely sequester carbon in their trunks, roots and soil for hundreds of years. It is estimated that we have 3 trillion trees, and we need a trillion more. Now. Project Drawdown identifices 4 solutions to protect and restore tropical and temperate forests, and plant native trees on unforested land.

Soil is the Earth's largest carbon sink, and farming has huge huge potential to store carbon, rather than releasing it. Cover crops, no-till or low-till farming, crop rotation, composting, perennial crops, tree crops and silvopasture are all regenerative practices which store carbon, and all have great economic benefits.