Abstract

FERRARI, Javier et al. The effects of organic-mineral fertilizer application of barley crop in SW Buenos Aires (Argentina). Rev. de Ciências Agrárias [online]. 2022, vol.45, n.4, pp.261-270.  Epub Dec 01, 2022. ISSN 0871-018X.  https://doi.org/10.19084/rca.28431.

Livestock intensification in the Pampas area generates large quantities of organic wastes that must be properly managed to avoid negative impacts on the environment. Composting is considered to recycle animal manures to value their capacity as fertilizers. The densification of pelletized material can be an alternative for compost application, improving transportation, storage and dosage. The objective of this work was to evaluate the use of organo-mineral fertilizers based on pelletized compost as a source of N and P in barley (Hordeum vulgare L.) and compare their performance with inorganic sources of N and P. An experimental field trial was carried to evaluate the use of pelletized compost-based organo-mineral fertilizers as a source of N and P in barley (Hordeum vulgare L.). An experimental field trial was carried out including 4 treatments and a control without fertilization. P fertilizers were applied incorporated at sowing and N fertilizers at surface-applied. Non-destructive biophysical variables were monitored at the vegetative stage (Chl, LAI and fCOVER) and grain yield (kg ha-1) at harvest. No significant differences were found in the treatments applied, suggesting that mineral fertilizers could be partially replaced and organic matter could be incorporated into the soil by recycling and valorizing livestock residues.

Keywords : organic waste; compost; pellet; biofertilizer; barley.

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