Science and Technology Production
Article
Authorship
Date
2024
Publishing House and Editing Place
UNIV NACIONAL CUYO
Magazine
REVISTA DE LA FACULTAD DE CIENCIAS AGRARIAS DE LA UNIVERSIDAD NACIONAL DE CUYO
UNIV NACIONAL CUYO
Summary
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SIGEVA
This study characterized the agrochemical properties of V. labrusca grape pomace (GP)and evaluated the effect on the rhizobacteria Azospirillum brasiliense and horticulturalcrops, determining safety as fertilizer and/or mulching. Two first bioassays wereperformed with the GP at different concentrations evaluating toxicity on A. brasiliense, andon tomato and lettuce seeds. A third bioassay evaluated GP mulching effects on tomatoand lettuce plants growing with amounts varying between 20 and 80 t ...
This study characterized the agrochemical properties of V. labrusca grape pomace (GP)and evaluated the effect on the rhizobacteria Azospirillum brasiliense and horticulturalcrops, determining safety as fertilizer and/or mulching. Two first bioassays wereperformed with the GP at different concentrations evaluating toxicity on A. brasiliense, andon tomato and lettuce seeds. A third bioassay evaluated GP mulching effects on tomatoand lettuce plants growing with amounts varying between 20 and 80 t ha-1. Agrochemicalcharacterization showed that GP is rich in potassium and phosphorus, with a low content ofNa+ salts (SAR < 15). The GP at 2.5% (w v-1) significantly increased survival rates of N2-fixingrhizobacteria. Results on seed germination revealed lettuce was more susceptible toincreasing GP concentrations. The application of 20 t ha-1 of GP in greenhouse experimentsincreased lettuce and tomato root biomass. Furthermore, the aerial part of tomato showedno toxicity symptoms. These results open the possibility of considering V. labrusca GP asmulching without prior treatment in tomato crops.
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Key Words
MACRONUTRIENTSREVALORATIONLETTUCEAGROWASTETOMATTOAZOSPIRILLUM BRASILIENSE