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Insect frass composition and potential use as an organic fertilizer in circular economies.
Amorim, Helen C S; Ashworth, Amanda J; Arsi, Komala; Rojas, M Guadalupe; Morales-Ramos, Juan A; Donoghue, Annie; Robinson, Kelsy.
Afiliación
  • Amorim HCS; USDA-ARS Poultry Production and Product Safety Research Unit, Fayetteville, AR 72701, USA.
  • Ashworth AJ; Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72701, USA.
  • Arsi K; USDA-ARS Poultry Production and Product Safety Research Unit, Fayetteville, AR 72701, USA.
  • Rojas MG; USDA-ARS Poultry Production and Product Safety Research Unit, Fayetteville, AR 72701, USA.
  • Morales-Ramos JA; USDA-ARS National Biological Control Laboratory, Biological Control of Pests Research, Stoneville, MS 38776, USA.
  • Donoghue A; USDA-ARS National Biological Control Laboratory, Biological Control of Pests Research, Stoneville, MS 38776, USA.
  • Robinson K; USDA-ARS Poultry Production and Product Safety Research Unit, Fayetteville, AR 72701, USA.
J Econ Entomol ; 117(4): 1261-1268, 2024 Aug 12.
Article en En | MEDLINE | ID: mdl-38167706
ABSTRACT
Insect manure or "frass" has emerged as an alternative nutrient source for alleviating the dependence on fossil fuel-based fertilizers, reducing food waste, and promoting food security. Yet, research on insect frass chemical composition is in its infancy. Here, we assessed the chemical properties of yellow mealworm (Tenebrio molitor L.) frass compared with poultry litter (PL). Insect frass was obtained from the National Biological Control Laboratory (NBCL; IF-L) and an insect-rearing company (IF-C). PL was collected from facilities in Arkansas (PL-AR) and North Carolina (PL-NC). Samples were analyzed for pH, electrical conductivity, macro- and micronutrients, heavy metals, pathogens, and indicator microorganisms. On average, insect frass had 43% and 47% higher C and N than PL, respectively (P < 0.05). Considering a 5 mg/ha application rate, IF-C can supply 159 kg N/ha, twice the N supply of PL-AR (78 kg/ha). IF-L had a 53% higher P supply than PL-NC. Mean K, Ca, S, and micronutrient contents were higher in PL than in frass (P < 0.05), whereas As, Cd, Cr, and Pb were nearly absent in frass. Chemical composition and pathogens in fertilizer sources were largely affected by insect-rearing substrate and supplements used in poultry and insect production. Insect frass utilized in this study had optimum C and N rates relative to PL, suggesting a promising soil amendment for improving soil health and C sequestration, thus contributing to sustainable agricultural intensification and reuse of food waste in circular economies.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fertilizantes / Estiércol Tipo de estudio: Health_economic_evaluation Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: J Econ Entomol Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fertilizantes / Estiércol Tipo de estudio: Health_economic_evaluation Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: J Econ Entomol Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido