necrotic spots host:www.btny.purdue.edu

Listing 1 - 4 from 4 for necrotic spots

Crop Diseases in Wheat 1 (Purdue University)
... . Puccinia recondita f. sp. tritici Symptoms: Dry, yellow (chlorotic) flecks to red or brown-black necrotic spots on upper leaf surfaces. Conditions: Infection favored by moisture and cool temperatures (59-72 F ...
www.btny.purdue.edu

Herbicide Injury Symptoms on Corn and Soybeans (Purdue University)
... detail. Index, Search or Top of Page CORN Mode: Cell Membrane Disruptor Herbicide: Paraquat Injury: Necrotic spots Condition: Herbicide drift from nearby field, most likely a no-till field where a burndown ...
www.btny.purdue.edu

Herbicide Injury Symptoms on Corn and Soybeans (Purdue University)
... Mode: Photosynthetic Inhibitor Herbicide: Atrazine, Metribuzin Injury: Lower leaves display interveinal chlorosis with necrotic margins Condition: Carryover of atrazine or high rate of metribuzin SOYBEAN Mode: ... , Search or Top of Page CORN Mode: Cell Membrane Disruptor Herbicide: Paraquat Injury: Necrotic spots Condition: Herbicide drift from nearby field, most likely a no-till field where ...
www.btny.purdue.edu

Crop Diseases in Soybean 1 (Purdue University)
... Pathogen: Bacterium. Pseudomonas syringae pv. glycinea Symptoms: Initial symptoms are small angular watersoaked spots on leaves. Lesion centers dry out and turn brown to black with watersoaked ... Death Syndrome Pathogen: Fungus. Fusarium solani race A Symptoms: Yellow interveinal blotches, which become necrotic leaving green tissue along the leaf veins. Leaf blades drop, leaving petioles attached ...
www.btny.purdue.edu