cultivate, foster
培 centers on nurturing growth: cultivating plants, fostering skills, or developing something over time.
培 combines 土 (earth) with 咅, which likely contributes the sound and may relate to adding or piling up, suggesting building up soil for cultivation.
Earth 土 is piled up around the right side 咅, like a farmer mounding soil to cultivate and foster healthy plants.
For バイ, imagine buying rich soil to cultivate a garden: buy -> バイ, and the earth 土 helps your plants grow.
cultivation
culture; cultivation
to cultivate; to foster
culture medium; growth medium
terrace culture
plastic tunnel crop cultivation; growing crops in long barrel-roofed vinyl greenhouses
greenhouse cultivation
no-till farming
agronomy
forcing (plants, vegetables, etc.); artificially hastening the growth of plants (by controlling heat, light, etc.)
monoculture
cultivation (of plants); culturing
potting soil; planting mix; compost
(culture) medium
embryologist
culture fluid; culture solution; broth
cultured meat; lab-grown meat; in-vitro meat; clean meat
nutrient agar
late raising; artificial slowing of growth of plants
intensive cultivation; greenhouse farming