A method for protecting a crop against plant-parasitic nematode attack by inducing local and systemic resistance of the crop comprising the application of a composition containing an effective amount of .beta.-amino butyric acid or derivatives thereof to the crop or its locus.

Un método para proteger una cosecha contra ataque plant-parasitic del nematodo induciendo la resistencia local y systemic de la cosecha que abarca el uso de una composición que contiene una cantidad eficaz de ácido butyric o de derivados beta.-amino de eso a la cosecha o a su lugar geométrico.

 
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