cucumber seedlings at the stage of formation of the second true leaf

activity air artificial coat coloring conditions cotyledon cucumber daylight development dicotyledonous disease dissolving elements embryo environment favorable feeding fertilizers germination growth hours humidity hybrids improvement inlaying lack light lighting microclimate microflora nutrient nutrients nutrition pelleting pests photosynthesis phytolamp plant prolongation protection quality recovery root seed soaking soil solution sowing staining stimulation sun sunlight swelling system temperature trace vital