What is cotton Fusarium wilt?

What is cotton Fusarium wilt? What are the forms of expression? There are mainly the following kinds of cotton Fusarium wilt: ⑴ yellow net pattern. The veins of leaves first fade to yellow, and the mesophyll is still green, forming a yellow network. ⑵ yellowing type. Leaf veins remain green, mesophyll turns yellow, or leaf veins and mesophyll turn yellow. The chlorotic leaves develop inward from the edge of the leaf, and when the leaf edge is severe, the leaf margin is scorched. ⑶ fuchsia type. Purple red spots appear on the leaves, and sometimes the whole fruit branches or leaves of the whole plant turn purple. Half of the purplish red type often appears on the cotyledons. Half of the ⑷ is yellow. The leaves of the diseased plants kept green on one side, yellowed or yellow net on the other half, and scorched and fell off in severe cases. ⑸ wrinkled type. The leaf turns dark green, thickens slightly, the leaf edge curls down, and the leaf surface is concave and convex. ⑹ dwarf type. The Internode of the diseased plant was shortened, the angle was formed between the nodes, the whole plant was dwarfed, and the main stem became a "ξ" polygonal line. ⑺ bacterial wilt type. The leaves wilted and drooped, the leaf color remained the same, sometimes the whole plant wilted, sometimes local wilted, sometimes half of the leaves withered. It often occurs in the sunny weather after rain, so it is also called acute wilting type. Internal anatomical symptoms: black or dark brown stripes can be seen after dissection of the main stem, branch or petiole of the diseased plant, which is caused by discoloration of vascular bundles. Click to get massive cotton planting technology click to get massive grain and oil crop planting technology