ARS | Publication request: ASCOCHYTA BLIGHT OF CHICKPEA

Submitted to: University of Idaho Cooperative Extension Bulletin
Publication Type: Other
Publication Acceptance Date: May 1, 1995
Publication Date: N/A

Interpretive Summary: Chickpea is an important rotational crop in the U.S. Pacific Northwest; however, the crop can be devastated by ascochyta blight if conditions are favorable for the disease and susceptible varieties are grown, In this report, we describe the disease and its mode of spread within fields and between fields. Also, the mode of reproduction of the fungus is described as well as the means of long distance spread. With that information, we formulate a control strategy that relies on extending the rotation that includes chickpeas, the use of blight resistant varieties, the use of certified disease free seed, the use of foliar fungicides, sanitation of fields from disease infested crop debris. The control strategy is expected to make it possible to economically produce the crop in the region.

Technical Abstract: To sustain the profitable production of chickpeas in the Palouse, growers should employ the following management practices to promote crop vigor and limit Ascochyta blight development. Rotations should be chosen that permit 3 to 4 years between successive chickpea crops. Choose blight resistant varieties such as Sandford, Dwelley, and Myles. Use only certified, disease free seed and protect the seed and emerging seedlings with approve fungicide seed treatments. Destroy blight infested crop residues and volunteer chickpea plants and when necessary, use approved foliar fungicides to limit blight development and associated yield losses.