Organic Fertilizer from Algae: A Novel Approach Towards Sustainable Agriculture

Baweja, Pooja; Kumar, Shiv; Kumar, Gaurav

doi:10.1007/978-3-030-18933-4_16

Cited by 31 publications

(23 citation statements)

References 55 publications

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“…Blue-green algae (or cyanobacteria) are able to fix atmospheric nitrogen (N 2 ), converting it into organic nitrogen forms, which are more easily assimilated by higher plants. Therefore, the use of cyanobacteria in soils increase the availability of nitrogen, which is one of the essential nutrients for plants' growth [6,8,96,97]. The beneficial effects of cyano-bacteria in agricultural soils (for the production of different crops) has already been demonstrated [90].…”

Section: Nitrogen Fixationmentioning

confidence: 99%

“…Besides their importance in the enrichment of soils with essential nutrients and in the reclamation of soil properties, microalgae and cyanobacteria can also improve some soil characteristics, such as aggregation, porosity, permeability, ventilation and humidity level [6,7,97,101]. Typically, the improvement of these characteristics is associated with the polysaccharides excreted by several microalgal/cyanobacterial species [6,97]. When excreted to the soils, these polysaccharides tend to form an adhesive and gelatinous sheath that contributes to soils' aggregation and prevents them from erosion [6].…”

Section: Soil Physical and Chemical Amendmentsmentioning

confidence: 99%

“…Typically, the improvement of these characteristics is associated with the polysaccharides excreted by several microalgal/cyanobacterial species [6,97]. When excreted to the soils, these polysaccharides tend to form an adhesive and gelatinous sheath that contributes to soils' aggregation and prevents them from erosion [6]. These polysaccharides also play an important role in soils' aeration and in their ability for water retention, which is crucial to maintain soils' temperature, pH and salinity [6,7,97,101].…”

Section: Soil Physical and Chemical Amendmentsmentioning

confidence: 99%

“…When excreted to the soils, these polysaccharides tend to form an adhesive and gelatinous sheath that contributes to soils' aggregation and prevents them from erosion [6]. These polysaccharides also play an important role in soils' aeration and in their ability for water retention, which is crucial to maintain soils' temperature, pH and salinity [6,7,97,101]. The improvement of these soil properties significantly enhances crops' productivities, as they stimulate root growth and boost the soil microbial activity.…”

Section: Soil Physical and Chemical Amendmentsmentioning

confidence: 99%

“…Chemically-based products have been widely used in agriculture, either as plantgrowth promotors (improving crops' yields), or as plant protection agents (protecting plants from different stress conditions) [5][6][7][8]. However, most of these agents are toxic and their accumulation in the plants and in the soil can be a threat to humans and to the environment.…”

Section: Introductionmentioning

confidence: 99%

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The Use of Microalgae and Cyanobacteria in the Improvement of Agricultural Practices: A Review on Their Biofertilising, Biostimulating and Biopesticide Roles

Gonçalves

2021

Applied Sciences

163

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The increase in worldwide population observed in the last decades has contributed to an increased demand for food supplies, which can only be attained through an improvement in agricultural productivities. Moreover, agricultural practices should become more sustainable, as the use of chemically-based fertilisers, pesticides and growth stimulants can pose serious environmental problems and lead to the scarcity of finite resources, such as phosphorus and potassium, thus increasing the fertilisers’ costs. One possible alternative for the development of a more sustainable and highly effective agriculture is the use of biologically-based compounds with known activity in crops’ nutrition, protection and growth stimulation. Among these products, microalgal and cyanobacterial biomass (or their extracts) are gaining particular attention, due to their undeniable potential as a source of essential nutrients and metabolites with different bioactivities, which can significantly improve crops’ yields. This manuscript highlights the potential of microalgae and cyanobacteria in the improvement of agricultural practices, presenting: (i) how these photosynthetic microorganisms interact with higher plants; (ii) the main bioactive compounds that can be isolated from microalgae and cyanobacteria; and (iii) how microalgae and cyanobacteria can influence plants’ growth at different levels (nutrition, protection and growth stimulation).

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Section: Nitrogen Fixationmentioning

confidence: 99%

Section: Soil Physical and Chemical Amendmentsmentioning

confidence: 99%

Section: Soil Physical and Chemical Amendmentsmentioning

confidence: 99%

Section: Soil Physical and Chemical Amendmentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Use of Microalgae and Cyanobacteria in the Improvement of Agricultural Practices: A Review on Their Biofertilising, Biostimulating and Biopesticide Roles

Gonçalves

2021

Applied Sciences

163

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Controlled/slow‐release fertilizer based on cellulose composite and its impact on sustainable agriculture: review

Firmanda

Fahma

Syamsu

et al. 2022

Biofuels Bioprod Bioref

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The increase in global population puts pressure on food supplies in the agricultural sector, whose productivity depends on the soil nutrient availability. This demand has an impact on the high chemical fertilizer consumption. Simultaneously, another problem arises owing to unsustainable agricultural practices, namely low fertilizer efficiency. Controlled/slow-release (CRF/SRF) fertilizers using cellulose biopolymers as composite matrices are a sustainable prospect owing to their being abundant, renewable, and biodegradable. Furthermore, cellulose contains surface chemical properties that are easily modified to play a role in the fertilizers' release. In addition, the high cellulose hydrophilicity helps maintain soil moisture for plant growth. This article reviews the prospects of cellulose and its derivatives for CRF/ SRF development, including cellulose modification, slow/controlled-release mechanisms, and their impact on sustainable agricultural practices, which are discussed based on environmental, economic and social aspects. In addition, selecting environmentally friendly and low-cost technologies is a concern to support sustainability.

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Photobioreactors for cultivation and synthesis: Specifications, challenges, and perspectives

Chanquia

Vernet

Kara

2021

Engineering in Life Sciences

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Due to their versatility and the high biomass yield produced, cultivation of phototrophic organisms is an increasingly important field. In general, open ponds are chosen to do it because of economic reasons; however, this strategy has several drawbacks such as poor control of culture conditions and a considerable risk of contamination. On the other hand, photobioreactors are an attractive choice to perform cultivation of phototrophic organisms, many times in a large scale and an efficient way. Furthermore, photobioreactors are being increasingly used in bioprocesses to obtain valuable chemical products. In this review, we briefly describe different photobioreactor set‐ups, including some of the recent designs, and their characteristics. Additionally, we discuss the current challenges and advantages that each different type of photobioreactor presents, their applicability in biocatalysis and some modern modeling tools that can be applied to further enhance a certain process.

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Organic Fertilizer from Algae: A Novel Approach Towards Sustainable Agriculture

Cited by 31 publications

References 55 publications

The Use of Microalgae and Cyanobacteria in the Improvement of Agricultural Practices: A Review on Their Biofertilising, Biostimulating and Biopesticide Roles

The Use of Microalgae and Cyanobacteria in the Improvement of Agricultural Practices: A Review on Their Biofertilising, Biostimulating and Biopesticide Roles

Controlled/slow‐release fertilizer based on cellulose composite and its impact on sustainable agriculture: review

Photobioreactors for cultivation and synthesis: Specifications, challenges, and perspectives

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