Nitrogen Release from Slow-Release Fertilizers in Soils with Different Microbial Activities

Nardi, Pierfrancesco; Neri, Ulderico; Matteo, G. Di; Trinchera, Alessandra; Napoli, Rosario; Farina, Roberta; Subbarao, G. V.; Benedetti, A.

doi:10.1016/s1002-0160(17)60429-6

Cited by 39 publications

(15 citation statements)

References 13 publications

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“…Ma et al, (2015) drew similar conclusions in the case of maize production. Similarly, Nardi et al, (2018) stated that application of slow-release fertilizers significantly increased the efficiency of agricultural production, both from the environmental and production point of view.…”

Section: Results Of Conducted Experimentsmentioning

confidence: 99%

The Use of Slow-Release Fertilizers as a Part of Optimization of Celeriac Production Technology

Niemiec

Komorowska

2018

Agricultural Engineering

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The aim of this study was to assess the possibility of using slow-release fertilizers under intensive vegetable cultivation. To achieve the set research objective, a field experiment was set up in 2017, where slow-release fertilizer (NPK (%) 20-10-10+4MgO) was applied. The experiment comprised three levels of fertilization with the use of slow-release fertilizers, the control without fertilization, and the control fertilized with conventional fertilizers. The slow-release fertilizer was applied directly under each plant and in rows – approximately 8 cm below the root level. The designed systems were evaluated based on the size of commercial yield, productivity index, agronomic efficiency index, removal efficiency index, and physiological efficiency index. The results obtained in the field experiment indicate that the highest plant yield (54.22 Mg of commercial yield∙ha−1) was obtained at the highest dose of slow-release fertilizers (600 kg∙ha−1 applied in rows approximately 8 cm below the root level). In the case of direct fertilization, in the treatment with the highest dose of slow-release fertilizer, a reduction in yield was observed. The best results, in terms of equalizing the mass of individual roots, were obtained under conventional fertilization. The most favorable value of the productivity index was obtained in the variant where 400 kg∙ha−1 slow-release fertilizer was applied directly, while in the case of row application the best results were obtained at the dose of 600 kg∙ha−1. Celeriac fertilization with slow-release fertilizers under root may result in producing a yield of bigger differences in root mass, compared to conventional fertilization system.

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Section: Results Of Conducted Experimentsmentioning

confidence: 99%

The Use of Slow-Release Fertilizers as a Part of Optimization of Celeriac Production Technology

Niemiec

Komorowska

2018

Agricultural Engineering

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“…Both excessive and insufficient doses of fertilizers, as well as improper fertilization technologies (techniques used and dates of application), adversely affect the environment and the quantity and quality of crops [12,13]. In addition, the introduction of rational fertilization methods is an effective tool for shaping the image of agriculture in the modern world [14].…”

Section: Introductionmentioning

confidence: 99%

“…To meet the growing needs of agriculture, the fertilizer industry has introduced an ever-growing range of slow-release fertilizers, thanks to which nutrient supplementation of plants is extended over the vegetation period. The use of slow-release fertilizers is one of the methods of fertilization optimization which has increased in importance in recent years [14,23,24]. The purpose of slow-release fertilizers is to reduce both the total amount of plant nutrients introduced into the environment and the amount of energy used for fertilization treatments.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy

et al. 2020

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Optimization of plant nutrition is a very important part of primary production quality systems. Crop fertilization is the most important agrotechnical measure because it determines the amount and quality of the yield. Moreover, excess fertilization intensifies the eutrophication processes and the greenhouse effect. The study aimed to assess the suitability of slow-release fertilizers in cultivation of carrot subspecies Daucus carota L. ssp. sativus in the integrated production system. The objective was realized on the basis of a strict field experiment set up on a clay loam soil with low nutrient content. The dose of fertilizer was the experimental factor. The fertilizers were applied during the formation of the ridges. Traditional fertilizers (ammonium phosphate, potassium salt, ammonium nitrate, and a multi-component fertilizer Polifoska 6), as well as a multi-component fertilizer with slow release of nutrients, NPK Mg (18-12-24-4), were used. In individual variants of the experiment, different fertilization strategies were applied: integrated production fertilization, traditional fertilization, and fertilization based on the use of slow-release fertilizers. The control treatment comprised of unfertilized plants. The efficiency of nitrogen fertilization was evaluated based on agronomic efficiency, partial factor productivity, physiological efficiency, and removal efficiency. Fertilization strategy significantly impacted the quantity of obtained yield. In the control sample, prior to mineral fertilization, the crop yield was 33.53 Mg·ha −1 . The largest yield was 82.30 Mg·ha −1 .The largest yields were obtained from plants fertilized with a combination of slow-release fertilizers, with nitrogen introduced in the form of ammonium phosphate, and through conventional fertilization. The highest productivity and environmental efficiency were obtained in treatments with fertilization according to the principles of integrated production and with slow-release fertilizers. In terms of environmental efficiency, the best results were obtained through nitrogen fertilization using 400 kg of slow-release fertilizers. The use of slow-release fertilizers in carrot cultivation can significantly improve the efficiency of fertilization, both in terms of production and environmental protection.

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“…These inefficiencies cause adverse effects to the environment as excess nitrogen changes soil pH, which kills microbes in the soil, and leached fertilizer can poison water that may be consumed by human and animals. To fulfil the nitrogen supply to crops and increase harvests, many farmers have increased their use of urea, which results in worse pollution and excessive use of fertilizer (Bari et al, 2007;Nardi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Nitrogen Release in Modified Controlled-Release-Fertilizer using Rice Husk Biochar

Petrus¹,

Putera²,

Wangi³

et al. 2020

IJTech

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Rice husk biochar was added to modify ureic fertilizer in order to control nitrogen release in two methods: (1) mixed-granule and (2) as a coating. The mixed-granule fertilizer was made of varied compositions of rice husk biochar, ureic fertilizer, and clay as a binder, whereas the coating model was formulated from ureic fertilizer, biogas sludge, and clay as a core and coated with various compositions of biochar and clay. All of the samples were leached by 100 mL of water once every three days, and the leachate was analyzed for its nitrogen content. Of all samples, coated fertilizer with a composition of 20% biochar and 80% clay showed the slowest nutrient diffusion with an effective diffusivity (De) number of 2.85×10 -8 cm/s 2 . The results show that both models increase fertilizer's ability to hold nitrogen longer than pure fertilizer. Both methods, mixed-granule and coated, showed slow release rate patterns, particularly at the beginning of the leaching process, and held the nitrogen content longer. Both models' release rates enable the modification of nitrogen release to meet the need for nitrogen in certain plantations.

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Nitrogen Release from Slow-Release Fertilizers in Soils with Different Microbial Activities

Cited by 39 publications

References 13 publications

The Use of Slow-Release Fertilizers as a Part of Optimization of Celeriac Production Technology

The Use of Slow-Release Fertilizers as a Part of Optimization of Celeriac Production Technology

Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy

Characterization of Nitrogen Release in Modified Controlled-Release-Fertilizer using Rice Husk Biochar

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