Chemicals for use in agriculture, horticulture and forestry except fungicides, herbicides, insecticides and parasiticides; manures; plant nutrition preparations that stimulate roots, plant growth, and for overall plant health; biostimulators, namely, plant growth stimulators obtained from raw materials, having a hormone or fertilizer-like mode of action; seaweed extract for use as a growth stimulant on plants; seaweed extract for use as a root growth stimulant on plants