Under bed fumigator

A method for applying fumigant under plastic mulched planting beds comprising:

• a. attaching two opposing armature systems adjustably to a tool bar of a tractor at an angle to permit fumigation of a plastic mulched planting bed without disturbing said plastic mulch
• b. adjusting said armatures to plant bed width,
• c. operatively attaching a fumigant tank to a blunt tipped knife having attached to its inner side, at about a ninety degree angle, a beveled fumigant injection blade;
• wherein said knife and blade include a feed tube with an opening for fumigant dispersal, and
• d. movi
• e. ng said tractor over raised, plastic mulched bed at speeds useful for applying fumigants below the soil surface to both sides of said bed.

A method for applying fumigant under plastic mulch planting beds comprising:

• a. attaching two opposing armature systems adjustably to a tool bar of a tractor at an angle to permit fumigation of a plastic mulched planting bed without disturbing said plastic mulch wherein said armature systems each include a main arm assembly, a hub and spindle assembly, a close wheel assembly and a fumigant dispersal assembly wherein said fumigant dispersal assembly includes a knife and blade,
• b. adjusting said armature systems to plant bed width,
• c. operatively attaching a fumigant tank to a blunt tipped knife having attached to its inner side, at about a ninety degree angle, a beveled fumigant injection blade;
• wherein said knife and blade include a feed tube with an opening for fumigant dispersal, and
• d. moving said tractor over a raised, plastic mulched bed while applying fumigants under a plastic covering of said raised, plastic mulched bed below a soil surface under said plastic covering wherein said knife and blade inject fumigant into said soil from both sides of said bed.