Water-holding capacity and plant growth in compost-based substrates modified with polyacrylamide, guar gum or bentonite

Paradelo, Remigio; Basanta, R.; Barral, María Teresa

doi:10.1016/j.scienta.2018.08.046

Cited by 52 publications

(26 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the same time, prills are more uniform in shape, whereas urea granules are easier to manage during bagging and transportation, and experience less breakage [12]. To address the issue of higher solubility and volatilization losses, a production methodology of slow-release urea fertilizer was developed in the last few decades [13,14]. These coatings or encapsulations of urea to make it slow a release fertilizer might be an appropriate management strategy that can be used to mitigate NH 3 volatilization losses, NO 3 − leaching, denitrification and surface runoff [8,9].…”

Section: Introductionmentioning

confidence: 99%

Biodegradable Polymer Coated Granular Urea Slows Down N Release Kinetics and Improves Spinach Productivity

et al. 2020

View full text Add to dashboard Cite

Low nitrogen (N) utilization efficiency due to environmental N losses from fertilizers results in high-cost on-farm production. Urea coating with biodegradable polymers can prevent these losses by controlling the N release of fertilizers. We calculated N release kinetics of coated granular with various biodegradable polymeric materials and its impact on spinach yield and N uptake. Different formulations were used, (i) G-1: 10% starch + 5% polyvinyl alcohol (PVA) + 5% molasses; (ii) G-2: 10% starch + 5% PVA + 5% paraffin wax (PW); (iii) G-3: 5% gelatin + 10% gum arabic + 5% PW; (iv) G-4: 5% molasses + 5% gelatin + 10% gum arabic, to coat urea using a fluidized bed coater. The morphological and X-ray diffraction (XRD) analyses indicated that a uniform coating layer with no new phase formation occurred. In the G-2 treatment, maximum crushing strength (72.9 N) was achieved with a slowed-down N release rate and increased efficiency of 31%. This resulted in increased spinach dry foliage yield (47%), N uptake (60%) and apparent N recovery (ANR: 130%) from G-2 compared to uncoated urea (G-0). Therefore, coating granular urea with biodegradable polymers is a good choice to slower down the N release rate and enhances the crop yield and N utilization efficiency from urea.

show abstract

Section: Introductionmentioning

confidence: 99%

Biodegradable Polymer Coated Granular Urea Slows Down N Release Kinetics and Improves Spinach Productivity

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Usually, the controlled release system is mainly divided into two groups; (1) encapsulation of active molecules/agrochemicals/micronutrients by using polymeric matrix and (2) polymeric matrix and active molecules/agrochemicals/micronutrients enclosed and formation of macromolecular backbones. Several polymers (natural, synthetic, and synthetic elastomers) such as carboxymethyl cellulose [52], cellulose acetate phthalate [53], gelatin [54], chitosan [55], gum Arabic [56], polylactic acid (PLA) [57], poly-butadiene, poly-lactic-glycolic acid (PLGA) [58], polyhydroxyalkanoates (PHAs) [59], polyvinyl alcohol (PVA) [60], polyacrylamide [61,62], and polystyrene, etc., [63] are extensively used in various delivery systems. Among all of them, natural polymers are extensively used for controlled release of drugs/agrochemicals because of their low cost and being biodegradable.…”

Section: Polymeric Compositesmentioning

confidence: 99%

Polymeric Nanocomposite-Based Agriculture Delivery System: Emerging Technology for Agriculture

Ashfaq¹,

Talreja²,

Chuahan³

et al. 2020

Genetic Engineering - A Glimpse of Techniques and Applications

View full text Add to dashboard Cite

The increasing global population has forced the agricultural area to enhance the yield of crop, thereby fulfilling the requirements of people. The advancement has led to synthesis of nanomaterials with different size, shapes, and biocompatibility aspects towards specific applications like agriculture. Several nanomaterials such as metal, metal oxide, carbon nanotubes (CNTs), carbon nanofibers (CNFs), graphene, and its derivatives have shown potential ability for augmenting the yield of crops and protect crops against pathogens. However, these nanomaterials required smart delivery system that might easily deliver the nanofertilizers in a controlled manner. In this context, the incorporation of nanotechnology and polymer science might be developing newer technology with minimal usage and maximum effectiveness for improvement of crops. The incorporation of nanomaterials in polymeric composites offers newer approaches for agricultural delivery system that might provide various advantages such as higher stability, solubility, uniform distribution, and controlled release. Moreover, nanomaterials have potential ability for advancement in the genetic engineering. Herein, we discuss the role of nanomaterials in the growth of the plant, polymeric nanocomposite materials for agriculture delivery system with the advancement in the genetic engineering, and future prospects of these polymeric-nanocomposite materials in agriculture.

show abstract

“…Composts and vermicomposts have several applications, including agronomic uses as organic amendments in agricultural soils (Hargreaves et al 2008;Diacono and Montemurro 2010), as components in soil-less horticultural substrates (Carmona and Abad 2008;Paradelo et al , 2019, and for the remediation of degraded or polluted soils (Semple et al 2001;Paradelo et al 2007Paradelo et al , 2009aParadelo et al ,b, 2011Park et al 2011;Huang et al 2016). In addition, the use of composts and vermicomposts as adsorbents for the treating polluted waters is a promising field of study.…”

Section: The Use Of Composts and Vermicomposts As Adsorbentsmentioning

confidence: 99%

Potential use of composts and vermicomposts as low-cost adsorbents for dye removal: an overlooked application

Paradelo

Vecino

Moldes

et al. 2019

Environ Sci Pollut Res

View full text Add to dashboard Cite

The use of composts and vermicomposts as adsorbents is an important topic of study in the field of environmental remediation. These materials are rich in organic matter and have functional groups that can interact with organic and inorganic compounds. They also contain microorganisms that can promote biodegradation of organic substances. Composts that cannot be used for agronomic purposes (owing to e.g. low nutrient levels or phytotoxicity) may be valuable for soil remediation or pollutant removal. In this review paper, we discuss other papers on this topic, with the objective of drawing attention to the potential use of composts and vermicomposts and to recommend further investigation on this subject. Few published studies have investigated the use of vermicomposts to remove dyes and other coloured compounds. However, preliminary results show that these materials are potentially good adsorbents, particularly for basic dyes. However, there remain several uncertainties regarding this application. For example, very few dyes have been studied so far, and little is known about the influence of the properties of composts/vermicomposts on the dye removal process. Moreover, the possible use of vermicompost to enhance biodegradation processes has not been explored. All of these questions should be addressed in future research.

show abstract

Water-holding capacity and plant growth in compost-based substrates modified with polyacrylamide, guar gum or bentonite

Cited by 52 publications

References 22 publications

Biodegradable Polymer Coated Granular Urea Slows Down N Release Kinetics and Improves Spinach Productivity

Biodegradable Polymer Coated Granular Urea Slows Down N Release Kinetics and Improves Spinach Productivity

Polymeric Nanocomposite-Based Agriculture Delivery System: Emerging Technology for Agriculture

Potential use of composts and vermicomposts as low-cost adsorbents for dye removal: an overlooked application

Contact Info

Product

Resources

About