BSF - time to change the flies

Menino, Regina; Murta, Daniel

doi:10.15406/hij.2021.05.00215

Cited by 6 publications

(3 citation statements)

References 9 publications

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“…So far, BSF, TM and MD have well-documented production processes. Although some of the insects like the house fly are known to be parasitic and disease vectors, other species like the BSF are considered symbiotic ( Menino and Murta, 2021 ) as they can be propagated without causing any known harm to humans. Unlike animals, the feed conversion rate and GHG emissions of insects are much lower in a certain temperature range since insects do not use energy to maintain their body temperature in a strict range ( Belforti et al., 2015 ).…”

Section: Insect Species Utilized In Aquafeedmentioning

confidence: 99%

Recent advances in the utilization of insects as an ingredient in aquafeeds: A review

Maulu¹,

Langi

Hasimuna

et al. 2022

Animal Nutrition

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Section: Insect Species Utilized In Aquafeedmentioning

confidence: 99%

Recent advances in the utilization of insects as an ingredient in aquafeeds: A review

Maulu¹,

Langi

Hasimuna

et al. 2022

Animal Nutrition

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“…This is not entirely true in the case of biological digestion by the BSF larvae, which evidences the unique behavior of abandoning the compost at the pre-pupa stage, a phenomenon with obvious advantages in pupal harvesting and which is referred to in the bibliography as self-harvesting. For this reason, for the entomocompost obtained from BSF was proposed [14] the acronym CASH (Compost After Self Harvesting).…”

Section: On the Substrate To Be Compostedmentioning

confidence: 99%

The Insects as a Workforce for Organic Fertilizers Production – Insect Frass

Menino¹,

Murta²

2022

New Generation of Organic Fertilizers

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Following the evolution of composting technology, the process of digestion of a biological substrate by insects (entomocomposting) represents the last stage; however, from its initial context of producing an organic fertilizer, the role of entomocomposting has been imposing itself (due to increasing demographic pressure) mainly in the safe disposal of organic waste (in rampant growth) and in the breeding of insects for food and feed, for the sake of food security. Both these last goals converge in the first, as the safest disposal of the compost is its use as organic fertilizer; but the organic substrates are of a diversified nature, as are the species of insects which have already proved themselves in entomocomposting; hence, for each of the purposes in view, the choice is vast and, in the same way, the entomocompost composition is wide-ranging. Furthermore, various types of organic substrates, in addition to a microbial flora with symbiotic effects, may sometimes be able to transmit to the frass a harmful load of heavy metals and/or, depending on the composting insect agents, the presence of microorganisms harmful to crops and to humans and animals; in these situations, the former should be encouraged, and the latter counteracted through appropriate composting technology. Directives and legislation in this area, if properly considered, constitute a fundamental basis for ensuring the appropriate use of this particular kind of organic fertilizer. Apart from the production of insects for food and feed, where the choice of which insect is determined at the outset, the preference for the insect to be used in entomocomposting should be considered according to its proficiency in biological digestion of the organic substrates available for this purpose and the fertilizing quality of the frass produced. Although a multitude of species have been evaluated, to date, for the digestion of organic substrates, most have been used in assessing their specific potential for certain functionalities of frass related to crop nutrition and health, but there are few which, either by prolificacy, proficiency or rapidity in digesting substrates, exhibit capacity to compete in rural environment; nevertheless, new species could be evaluated in the framework of the research of competitors for entomocomposting of all or each substrate type and for each of the main anticipated objectives, meanwhile, genetic improvement to obtain new strains specialized for different organic substrates has already started to take its first steps. In addition to the binomial “insect x substrate” the composting technology constitutes the third fundamental factor for the efficiency of the process. Insects use as a composting agent has been suggested several decades ago, but it was only in the last decade that this process grown from the garden to the factory. Within rural areas, entomocomposting could play a key role within a circular economy, where recycling and reusing potentially polluting wastes safely returns to the land the enduring fertility that enables the sustained production that generated them, requiring no particularly upscale installations, equipment or technical training; it can, therefore, be adapted to any size of agricultural holding, from smallholdings to large industrial holdings, on the other hand, and in order to obtain a controlled production and high quality entomocompost, it is needed to implement industrial technologies and the composting unit can achieve a very high production per square meter, comparing with traditional composting methods. However, whether from the perspective of agriculture, livestock or forestry, the production of waste for entomocomposting always falls far short of the necessary scale, and therefore always requiring the use of biodigested organic waste from agricultural industries, provided that the necessary precautions are taken; in any case, it always constitutes added value, due to the products it generates, in addition to the inestimable value of the productive disposal of potentially polluting products. Despite all the advantages mentioned above, the controversy over the organic vs. mineral fertilizer option persists, often fuelled by myths on both sides, but the successes already achieved with insect entomocomposts, such as the black soldier fly (Hermetia illucens L.) or the mealworm (Tenebrio molitor L.), in field trials, which are gradually adding up, anticipate an important role for insects in safeguarding global food and environmental security.

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“…In this sense, and given the controversy of myths regarding organic or mineral fertilization, 2 new technologies have been developed to improve organic fertilizers, in order to set them free from the burden of their environmental footprint and to reduce or eliminate the need for mineral fertilizers. Despite progress already achieved through increased research and experimental development in this area, 3 triggered in particular by the need to promote the innocuous disposal of organic waste that is being produced in overwhelming proportion, justified doubts remain about the possibility of total replacement of mineral fertilizers without affecting agricultural productivity levels compatible with the scale to be expected for long term global needs. In the present case study, without doctrinal prejudices on the use of chemical fertilizers, but with a view to a scale of production compatible with the current and prospective global needs of agricultural production, the aim is to show an illustration of the effect on plant regrowth after the aerial part has been harvested, taken from a pot experiment, 4 where modalities without fertilization, with mineral fertilization, with organic fertilization and with mixed fertilization were contrasted.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2022

OAJS

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In the present case study, the aim is to show an example of the effect on residual fertility parameters (particularly with regard to the re-sprouting of plants after the harvesting of the aerial part), taken from a pot experiment, where modalities without fertilization, with mineral fertilization, with organic fertilization and with mixed fertilization were contrasted. Within this context it is possible to conclude the following: Mineral fertilization, alone, leads to a drastic inhibition of plant re-sprouting, that even in mixed fertilization situations (mineral + organic) it is considerable; in terms of residual microbiological activity, this phenomenon seems to be better correlated with reduced dehydrogenase activity than with β-Glucosidase activity.

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BSF - time to change the flies

Abstract: Here It has prospered, and in the Mediterranean Europe it has already been showing (in scientifically proven experimentation) a huge potential in the biological digestion of all kinds of organic leftovers.

Cited by 6 publications

References 9 publications

Recent advances in the utilization of insects as an ingredient in aquafeeds: A review

Recent advances in the utilization of insects as an ingredient in aquafeeds: A review

The Insects as a Workforce for Organic Fertilizers Production – Insect Frass

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