Grape pomace's potential on semi‐arid soil health enhances performance of maize, wheat, and grape crops

Background Grape pomace (GP) is a by-product of wineries after filtering the grape juice for wine production. GP contains seeds, pulp, skin, and stalks with acidic properties, it normally composted before using as soil amendment. However, composting requires more time, labor, equipment; furthermore, loses some desirable organic acids arid soils. The properties these plant nutrients in make amendment soils both non-composted forms. Aim This study investigates potential directly applying its impact on health performance. Methods To test amendment, greenhouse field studies were conducted by combining existing management practices (manure application used fertigation study) to assess effects crop (maize, wheat, grape) Results Adding 5% an alkaline significantly increased maize wheat growth shoot nutrient concentrations grapes (48% yield increase). significance maize, was associated enhancements (i.e., supplied, increase matter microbial biomass increase, reduction pH, better mobilization). Conclusion has direct use improvement, especially high pH limited matter.