Abstract
A survey of 42 fields of the spring wheat cultivar Yecora Rojo revealed that black point occurs more frequently in fields irrigated by center-pivot than by rill or wheelline. There was no consistent association of fungi with black point nor was there any apparent detrimental effects of black point on seed germinability. Helminthosporium and Fusarium species were found in seed from a high proportion of the fields samples. Surface disinfestation did not eliminate these fungi but, rather, enhanced their development, presumably by eliminating competing organisms.

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