Composting of household organic waste and its effects on growth and mineral composition of cherry tomato

Abstract

Composting is an alternative for recycling biodegradable organic waste, transforming it into organic fertilizer that can be used as agricultural nutrients, avoiding its disposal in landfills. This study evaluated the composting of household organic waste as a substitution for cattle manure, with a view to its application in the fertilization of cherry tomatoes (Solanum lycopersicum Mill., Var. Cesariforme). Thus, compost piles were set up using 30% organic waste (carbon source) and 70% tree-pruning residues (filling material). Two sources of organic waste were tested: household food waste (FW) and cattle manure (CM), at five proportions (15% FW + 15% CM, 10% FW + 20% CM, 20% FW + 10% CM and the controls 30% CM and 30% FW). After 90 days, the mature compost from each pile was mixed with coconut fibre in a 1:1 ratio and used as substrate filled in 15 L plastic pots, where the cherry tomato plants were grown. The experiment was conducted under greenhouse conditions in a randomized block design, with five treatments and five replicates. Assessments of growth and leaf mineral composition were performed for the cherry tomato plants. The results indicate that cattle manure can be replaced by household food waste as the organic material used in compost piles. Fertilization with organic compost from household food waste positively influenced the growth and nutrient assimilation in the leaf tissue of cherry tomato.

Initial growth of zinnia seedlings in substrate with different proportions of biosolid

“…Even though there are more recommended commercial substrates for the cultivation of certain species, the effect of different organic residues in the composition of substrates on the quality of the produced seedlings should still be evaluated, seeking to integrate the precepts of sustainability, reduce the time and costs of the production process, and provide options for nurserymen (Ferreira et al, 2018;Siqueira et al, 2019). In the composition of the substrate the organic part contributes for moisture retention, nutrients supply and its use in the production of seedlings has provided good results (Cordeiro et al, 2020;.…”

Riesgo patogénico por Aspergillus fumigatus en la producción de compost de Musa paradisiaca

“…Por lo tanto, el compostaje es una importante alternativa de degradación biológica de la materia orgánica hasta su estabilización (Haug, 1993), que se lleva a cabo por diversas y sucesivas poblaciones de microorganismos (Canales & Padilla, 2010). Este proceso origina como producto final: dióxido de carbono, agua y calor, así como también sustancias húmicas (Ferreira et al, 2018). En la producción industrial se puede reaprovechar rastrojos de uva (Fernández et al, 2019), cáscara de M. paradisiaca (Kalemelawa et al, 2012), restos de animales (Souza et al, 2019), poda de plantas (Corrêa da Silva et al, 2018) y diversos residuos de frutas y verduras (Tratsch et al, 2019) así como de diversas biomasas (Ramos, 2015;Bárbaro et al, 2019;Rodas-Gaitán et al, 2019).…”

Seedlings production of Gomphrena globosaand Petunia x hybridain different times and substrates

“…In general, these substrates are composed of more than one component, aiming at the physical and chemical balance of the combination to be used in the production of seedlings, because to obtain quality seedlings these substrates must provide water and nutrients in a balanced way (ARAÚJO et al, 2013;LUDWIG et al, 2010). Even though there are commercial substrates more recommended for the cultivation of certain species, new sustainable production technologies that supply the need and at the same time are accessible to the economic conditions of the producers must be evaluated (FERREIRA et al, 2018). Cultivation in substrates based on agricultural residues can result in plants with greater growth, phytomass accumulation (LUDWIG et al, 2010;PÊGO et al, 2019) and number of flowers (ALVAREZ et al, 2019) in relation to plants grown in commercial substrate.…”