Abstract
Modern agriculture and human nutrition depend on the use of agrochemicals. Among these are pesticides and synthetic fertilizers that cause a significant impact on ecosystems. It is desirable, therefore, to have alternatives that without reducing the production of food and its quality, reduce the amount and variety of pesticides and synthetic fertilizers used. Nanosilicon and nanochitosan are attractive materials due to their low environmental impact and their ability to induce positive responses in soils and plants. Compared with bulk materials, the use of nanometric materials significantly increases their effectiveness. The application of nanosilicon and nanochitosan to the soil, either individually or in combination, increases the bioavailability of mineral nutrients, reducing the need to apply copious amounts of fertilizers. On the other hand, the adverse effects of salinity, water deficit, heavy metals, and root pathogens are mitigated, reducing the need for pesticide use and increasing tolerance to environmental stress in plants. When applied by foliar spraying the impacts of nanosilicon and nanochitosan are equally positive, functioning as biostimulant compounds that induce and strengthen the defense mechanisms of plants against biotic and abiotic stresses, in addition to increasing their nutritional quality. The result obtained is a combination of stronger crops and an edaphic system that supports more productive plants. This chapter presents updated information about the agricultural application of nanosilicon and nanochitosan with the objective of reducing the use of pesticides and synthetic fertilizers, mitigating the environmental impact of the agricultural activity.
References
Ojeda-Barrios DL, Morales I, Juárez-Maldonado A, Sandoval-Rangel A, Fuentes-Lara LO, Benavides-Mendoza A (2020) Importance of nanofertilizers in fruit nutrition. In: Srivastava AK, Hu C (eds) Fruit crops. Elsevier, Amsterdam, pp 497–508
Morales-Díaz AB, Ortega-Ortíz H, Juárez-Maldonado A, Cadenas-Pliego G, González-Morales S, Benavides-Mendoza A (2017) Application of nanoelements in plant nutrition and its impact in ecosystems. Adv Nat Sci Nanosci Nanotechnol 8:013001. https://doi.org/10.1088/2043-6254/8/1/013001
Juárez-Maldonado A, Ortega-Ortíz H, Morales-Díaz AB, González-Morales S, Morelos-Moreno Á, Cabrera-De la Fuente M, Sandoval-Rangel A, Cadenas-Pliego G, Benavides-Mendoza A (2019) Nanoparticles and nanomaterials as plant biostimulants. Int J Mol Sci 20:162. https://doi.org/10.3390/ijms20010162
López-Pérez MC, Pérez-Labrada F, Ramírez-Pérez LJ, Juárez-Maldonado A, Morales-Díaz AB, González-Morales S, García-Dávila LR, García-Mata J, Benavides-Mendoza A (2018) Dynamic modeling of silicon bioavailability, uptake, transport, and accumulation: applicability in improving the nutritional quality of tomato. Front Plant Sci 9. https://doi.org/10.3389/fpls.2018.00647
Pichyangkura R, Chadchawan S (2015) Biostimulant activity of chitosan in horticulture. Sci Hortic 196:49–65. https://doi.org/10.1016/j.scienta.2015.09.031
Abdelhameed M, Aly S, Lant JT, Zhang X, Charpentier P (2018) Energy/electron transfer switch for controlling optical properties of silicon quantum dots. Sci Rep 8:1–13. https://doi.org/10.1038/s41598-018-35201-0
He Y, Fan C, Lee S-T (2010) Silicon nanostructures for bioapplications. Nano Today 5:282–295. https://doi.org/10.1016/j.nantod.2010.06.008
Ji X, Wang H, Song B, Chu B, He Y (2018) Silicon nanomaterials for biosensing and bioimaging analysis. Front Chem 6. https://doi.org/10.3389/fchem.2018.00038
Wu R, Zhou K, Yue CY, Wei J, Pan Y (2015) Recent progress in synthesis, properties and potential applications of SiC nanomaterials. Prog Mater Sci 72:1–60. https://doi.org/10.1016/j.pmatsci.2015.01.003
Narayan R, Nayak UY, Raichur AM, Garg S (2018) Mesoporous silica nanoparticles: a comprehensive review on synthesis and recent advances. Pharmaceutics 10. https://doi.org/10.3390/pharmaceutics10030118
Hossain SS, Mathur L, Roy PK (2018) Rice husk/rice husk ash as an alternative source of silica in ceramics: a review. J Asian Ceramic Soc 6:299–313. https://doi.org/10.1080/21870764.2018.1539210
Ng E-P, Awala H, Tan K-H, Adam F, Retoux R, Mintova S (2015) EMT-type zeolite nanocrystals synthesized from rice husk. Microporous Mesoporous Mater 204:204–209. https://doi.org/10.1016/j.micromeso.2014.11.017
RSC (2020) Silicon – element information, properties and uses | Periodic table. https://www.rsc.org/periodic-table/element/14/silicon. Accessed 1 Mar 2020
Verma KK, Liu X-H, Wu K-C, Singh RK, Song Q-Q, Malviya MK, Song X-P, Singh P, Verma CL, Li Y-R (2019) The impact of silicon on photosynthetic and biochemical responses of sugarcane under different soil moisture levels. SILICON. https://doi.org/10.1007/s12633-019-00228-z
Harraz FA (2014) Porous silicon chemical sensors and biosensors: a review. Sensors Actuators B Chem 202:897–912. https://doi.org/10.1016/j.snb.2014.06.048
Rastogi A, Tripathi DK, Yadav S, Chauhan DK, Živčák M, Ghorbanpour M, El-Sheery NI, Brestic M (2019) Application of silicon nanoparticles in agriculture. 3 Biotech 9:90. https://doi.org/10.1007/s13205-019-1626-7
Neagu M, Piperigkou Z, Karamanou K, Engin AB, Docea AO, Constantin C, Negrei C, Nikitovic D, Tsatsakis A (2017) Protein bio-corona: critical issue in immune nanotoxicology. Arch Toxicol 91:1031–1048. https://doi.org/10.1007/s00204-016-1797-5
Nsibande SA, Forbes PBC (2016) Fluorescence detection of pesticides using quantum dot materials – a review. Anal Chim Acta 945:9–22. https://doi.org/10.1016/j.aca.2016.10.002
Xu X, Mao X, Zhuang J, Lei B, Li Y, Li W, Zhang X, Hu C, Fang Y, Liu Y (2020) PVA coated fluorescent carbon dots nanocapsule as optical amplifier for enhanced photosynthesis of lettuce. ACS Sustain Chem Eng. https://doi.org/10.1021/acssuschemeng.9b07706
Zheng Y, Zhang H, Li W, Liu Y, Zhang X, Liu H, Lei B (2017) Pollen derived blue fluorescent carbon dots for bioimaging and monitoring of nitrogen, phosphorus and potassium uptake in Brassica parachinensis L. RSC Adv 7:33459–33465. https://doi.org/10.1039/C7RA04644H
Vázquez-Núñez E, López-Moreno ML, de la Rosa Álvarez G, Fernández-Luqueño F (2018) Incorporation of nanoparticles into plant nutrients: the real benefits. In: López-Valdez F, Fernández-Luqueño F (eds) Agricultural nanobiotechnology: modern agriculture for a sustainable future. Springer International Publishing, Cham, pp 49–76
Sangeetha C, Baskar P (2016) Zeolite and its potential uses in agriculture: a critical review. Agric Rev. https://doi.org/10.18805/ar.v0iof.9627
Eroglu N, Emekci M, Athanassiou CG (2017) Applications of natural zeolites on agriculture and food production. J Sci Food Agric 97:3487–3499. https://doi.org/10.1002/jsfa.8312
Mirzaei Aminiyan M, Safari Sinegani AA, Sheklabadi M (2015) Aggregation stability and organic carbon fraction in a soil amended with some plant residues, nanozeolite, and natural zeolite. Int J Recycl Org Waste Agric 4:11–22. https://doi.org/10.1007/s40093-014-0080-0
Thirunavukkarasu M, Subramanian KS (2014) Surface modified nano-zeolite based sulphur fertilizer on growth and biochemical parameters of groundnut. Trends Biosci 7:565–568
Mikhak A, Sohrabi A, Kassaee MZ, Feizian M (2017) Synthetic nanozeolite/nanohydroxyapatite as a phosphorus fertilizer for German chamomile (Matricariachamomilla L.). Ind Crop Prod 95:444–452. https://doi.org/10.1016/j.indcrop.2016.10.054
Yuvaraj M, Subramanian KS (2018) Development of slow release Zn fertilizer using nano-zeolite as carrier. J Plant Nutr 41:311–320. https://doi.org/10.1080/01904167.2017.1381729
Khati P, Chaudhary P, Gangola S, Sharma A (2019) Influence of nanozeolite on plant growth promotory bacterial isolates recovered from nanocompound infested agriculture field. Environ Ecol 37:521–527
Ogunlaja SB, Pal R (2020) Effects of bentonite Nanoclay and Cetyltrimethyl ammonium bromide modified bentonite Nanoclay on phase inversion of water-in-oil emulsions. Colloids Interfaces 4:2. https://doi.org/10.3390/colloids4010002
Mandal N, Datta SC, Manjaiah KM, Dwivedi BS, Kumar R, Aggarwal P (2018) Zincated Nanoclay polymer composites (ZNCPCs): synthesis, characterization, biodegradation and controlled release behaviour in soil. Polym-Plast Technol Eng 57:1760–1770. https://doi.org/10.1080/03602559.2017.1422268
Saurabh K, Math MK, Datta SC, Thekkumpurath AS, Kumar R (2019) Nanoclay polymer composites loaded with urea and nitrification inhibitors for controlling nitrification in soil. Arch Agron Soil Sci 65:478–491. https://doi.org/10.1080/03650340.2018.1507023
Mandal N, Datta SC, Manjaiah KM, Dwivedi BS, Kumar R, Aggarwal P (2019) Evaluation of zincated nanoclay polymer composite in releasing Zn and P and effect on soil enzyme activities in a wheat rhizosphere. Eur J Soil Sci 70:1164–1182. https://doi.org/10.1111/ejss.12860
Mukhopadhyay R, Manjaiah KM, Datta SC, Sarkar B (2019) Comparison of properties and aquatic arsenic removal potentials of organically modified smectite adsorbents. J Hazard Mater 377:124–131. https://doi.org/10.1016/j.jhazmat.2019.05.053
Suriyaprabha R, Karunakaran G, Yuvakkumar R, Rajendran V, Kannan N (2014) Foliar application of silica nanoparticles on the phytochemical responses of maize (Zea mays L.) and its toxicological behavior. Synth React Inorg, Met-Org, Nano-Met Chem 44:1128–1131. https://doi.org/10.1080/15533174.2013.799197
Suriyaprabha R, Karunakaran G, Yuvakkumar R, Rajendran V, Kannan N (2012) Silica nanoparticles for increased silica availability in maize (Zea mays. L) Seeds under hydroponic conditions. Curr Nanosci 8:902–908. https://doi.org/10.2174/157341312803989033
Wanyika H, Gatebe E, Kioni P, Tang Z, Gao Y (2012) Mesoporous silica nanoparticles carrier for urea: potential applications in agrochemical delivery systems. J Nanosci Nanotechnol 12:2221–2228. https://doi.org/10.1166/jnn.2012.5801
Boroumand N, Behbahani M, Dini G (2020) Combined effects of phosphate solubilizing Bacteria and Nanosilica on the growth of land cress plant. J Soil Sci Plant Nutr 20:232–243. https://doi.org/10.1007/s42729-019-00126-8
Rangaraj S, Gopalu K, Rathinam Y, Periasamy P, Venkatachalam R, Narayanasamy K (2014) Effect of silica nanoparticles on microbial biomass and silica availability in maize rhizosphere. Biotechnol Appl Biochem 61:668–675. https://doi.org/10.1002/bab.1191
Mushtaq A, Jamil N, Rizwan S, Mandokhel F, Riaz M, Hornyak GL, Najam Malghani M, Naeem Shahwani M (2018) Engineered silica nanoparticles and silica nanoparticles containing controlled release fertilizer for drought and saline areas. IOP Conf Ser Mater Sci Eng 414:012029. https://doi.org/10.1088/1757-899X/414/1/012029
Olad A, Zebhi H, Salari D, Mirmohseni A, Reyhani Tabar A (2018) Slow-release NPK fertilizer encapsulated by carboxymethyl cellulose-based nanocomposite with the function of water retention in soil. Mater Sci Eng C 90:333–340. https://doi.org/10.1016/j.msec.2018.04.083
Ohta S, Yamura K, Inasawa S, Yamaguchi Y (2015) Aggregates of silicon quantum dots as a drug carrier: selective intracellular drug release based on pH-responsive aggregation/dispersion. Chem Commun 51:6422–6425. https://doi.org/10.1039/C5CC00925A
Ibrahim SS, Salem NY (2019) Insecticidal efficacy of nano zeolite against Tribolium confusum (Col., Tenebrionidae) and Callosobruchus maculatus (Col., Bruchidae). Bull Natl Res Cent 43:92. https://doi.org/10.1186/s42269-019-0128-4
Wang Y, Cui H, Sun C, Zhao X, Cui B (2014) Construction and evaluation of controlled-release delivery system of Abamectin using porous silica nanoparticles as carriers. Nanoscale Res Lett 9:655. https://doi.org/10.1186/1556-276X-9-655
Song M-R, Cui S-M, Gao F, Liu Y-R, Fan C-L, Lei T-Q, Liu D-C (2012) Dispersible silica nanoparticles as carrier for enhanced bioactivity of chlorfenapyr. J Pestic Sci 37:258–260. https://doi.org/10.1584/jpestics.D12-027
Cao L, Zhang H, Cao C, Zhang J, Li F, Huang Q (2016) Quaternized chitosan-capped mesoporous silica nanoparticles as Nanocarriers for controlled pesticide release. Nanomaterials 6:126. https://doi.org/10.3390/nano6070126
Cumplido-Nájera CF, González-Morales S, Ortega-Ortíz H, Cadenas-Pliego G, Benavides-Mendoza A, Juárez-Maldonado A (2019) The application of copper nanoparticles and potassium silicate stimulate the tolerance to Clavibacter michiganensis in tomato plants. Sci Hortic 245:82–89. https://doi.org/10.1016/j.scienta.2018.10.007
Khan MR, Siddiqui ZA (2020) Use of silicon dioxide nanoparticles for the management of Meloidogyne incognita, Pectobacterium betavasculorum and Rhizoctonia solani disease complex of beetroot (Beta vulgaris L.). Sci Hortic 265:109211. https://doi.org/10.1016/j.scienta.2020.109211
Li Y, Li W, Zhang H, Dong R, Li D, Liu Y, Huang L, Lei B (2019) Biomimetic preparation of silicon quantum dots and their phytophysiology effect on cucumber seedlings. J Mater Chem B 7:1107–1115. https://doi.org/10.1039/C8TB02981D
Sun D, Hussain HI, Yi Z, Rookes JE, Kong L, Cahill DM (2016) Mesoporous silica nanoparticles enhance seedling growth and photosynthesis in wheat and lupin. Chemosphere 152:81–91. https://doi.org/10.1016/j.chemosphere.2016.02.096
Ghorbanpour M, Mohammadi H, Kariman K (2020) Nanosilicon-based recovery of barley (Hordeum vulgare) plants subjected to drought stress. Environ Sci Nano 7:443–461. https://doi.org/10.1039/C9EN00973F
Alsaeedi A, El-Ramady H, Alshaal T, El-Garawany M, Elhawat N, Al-Otaibi A (2019) Silica nanoparticles boost growth and productivity of cucumber under water deficit and salinity stresses by balancing nutrients uptake. Plant Physiol Biochem 139:1–10. https://doi.org/10.1016/j.plaphy.2019.03.008
Ali S, Rizwan M, Hussain A, Zia ur Rehman M, Ali B, Yousaf B, Wijaya L, Alyemeni MN, Ahmad P (2019) Silicon nanoparticles enhanced the growth and reduced the cadmium accumulation in grains of wheat (Triticum aestivum L.). Plant Physiol Biochem 140:1–8. https://doi.org/10.1016/j.plaphy.2019.04.041
Cui J, Liu T, Li F, Yi J, Liu C, Yu H (2017) Silica nanoparticles alleviate cadmium toxicity in rice cells: mechanisms and size effects. Environ Pollut 228:363–369. https://doi.org/10.1016/j.envpol.2017.05.014
Zhao F, Wu J, Ying Y, She Y, Wang J, Ping J (2018) Carbon nanomaterial-enabled pesticide biosensors: design strategy, biosensing mechanism, and practical application. TrAC Trends Anal Chem 106:62–83. https://doi.org/10.1016/j.trac.2018.06.017
Pla L, Lozano-Torres B, Martínez-Máñez R, Sancenón F, Ros-Lis JV (2019) Overview of the evolution of silica-based chromo-Fluorogenic nanosensors. Sensors 19:5138. https://doi.org/10.3390/s19235138
Yi Y, Zhu G, Liu C, Huang Y, Zhang Y, Li H, Zhao J, Yao S (2013) A label-free silicon quantum dots-based photoluminescence sensor for ultrasensitive detection of pesticides. Anal Chem 85:11464–11470. https://doi.org/10.1021/ac403257p
Zhu L, Peng X, Li H, Zhang Y, Yao S (2017) On–off–on fluorescent silicon nanoparticles for recognition of chromium(VI) and hydrogen sulfide based on the inner filter effect. Sensors Actuators B Chem 238:196–203. https://doi.org/10.1016/j.snb.2016.07.029
Ding L, Zhang W, Zhang Y, Lin Z, Wang X (2019) Luminescent silica nanosensors for lifetime based imaging of intracellular oxygen with millisecond time resolution. Anal Chem 91:15625–15633. https://doi.org/10.1021/acs.analchem.9b03726
Furlani F, Sacco P, Decleva E, Menegazzi R, Donati I, Paoletti S, Marsich E (2019) Chitosan acetylation degree influences the physical properties of polysaccharide nanoparticles: implication for the innate immune cells response. ACS Appl Mater Interfaces 11:9794–9803. https://doi.org/10.1021/acsami.8b21791
Wahid F, Khan T, Hussain Z, Ullah H (2018) 30 – nanocomposite scaffolds for tissue engineering; properties, preparation and applications. In: Inamuddin, Asiri AM, Mohammad A (eds) Applications of nanocomposite materials in drug delivery. Woodhead Publishing, Sawston, pp 701–735
Darwesh OM, Sultan YY, Seif MM, Marrez DA (2018) Bio-evaluation of crustacean and fungal nano-chitosan for applying as food ingredient. Toxicol Rep 5:348–356. https://doi.org/10.1016/j.toxrep.2018.03.002
Arrouze F, Essahli M, Rhazi M, Desbrieres J, Tolaimate A (2017) Chitin and chitosan: study of the possibilities of their production by valorization of the waste of crustaceans and cephalopods rejected in Essaouira. J Mater Environ Sci 8:2251–2258
Jardine A, Sayed S (2016) Challenges in the valorisation of chitinous biomass within the biorefinery concept. Curr Opin Green Sustain Chem 2:34–39. https://doi.org/10.1016/j.cogsc.2016.09.007
Bastiaens L, Soetemans L, D’Hondt E, Elst K (2019) Sources of chitin and chitosan and their isolation. In: Chitin and chitosan. Wiley, Hoboken, pp 1–34
Nugraheni PS, Soeriyadi AH, Sediawan WB, Ustadi BW (2019) Influence of salt addition and freezing-thawing on particle size and zeta potential of nano-chitosan. IOP Conf Ser Earth Environ Sci 278:012052. https://doi.org/10.1088/1755-1315/278/1/012052
Embaby AM, Melika RR, Hussein A, El-Kamel AH, Marey HS (2018) Biosynthesis of chitosan-oligosaccharides (COS) by non-aflatoxigenic Aspergillus sp. strain EGY1 DSM 101520: a robust biotechnological approach. Process Biochem 64:16–30. https://doi.org/10.1016/j.procbio.2017.09.030
Divya K, Jisha MS (2018) Chitosan nanoparticles preparation and applications. Environ Chem Lett 16:101–112. https://doi.org/10.1007/s10311-017-0670-y
Thomas MS, Pillai PKS, Faria M, Cordeiro N, Kailas L, Kalarikkal N, Thomas S, Pothen LA (2020) Polylactic acid/nano chitosan composite fibers and their morphological, physical characterization for the removal of cadmium(II) from water. J Appl Polym Sci 137:48993. https://doi.org/10.1002/app.48993
Veroneze-Júnior V, Martins M, Mc Leod L, Souza KRD, Santos-Filho PR, Magalhães PC, Carvalho DT, Santos MH, Souza TC, Veroneze-Júnior V, Martins M, Mc Leod L, Souza KRD, Santos-Filho PR, Magalhães PC, Carvalho DT, Santos MH, Souza TC (2020) Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction. Braz J Biol:1–10. https://doi.org/10.1590/1519-6984.218391
Morin-Crini N, Lichtfouse E, Torri G, Crini G (2019) Fundamentals and applications of chitosan. In: Crini G, Lichtfouse E (eds) Sustainable agriculture reviews 35: chitin and chitosan: history, fundamentals and innovations. Springer International Publishing, Cham, pp 49–123
Swaroopa Rani T, Nadendla SR, Bardhan K, Madhuprakash J, Podile AR (2020) Chapter 17: Chitosan conjugates, microspheres, and nanoparticles with potential agrochemical activity. In: Prasad MNV (ed) Agrochemicals detection, treatment and remediation. Butterworth-Heinemann, Oxford, pp 437–464
Choudhary RC, Kumari S, Kumaraswamy RV, Sharma G, Kumar A, Budhwar S, Pal A, Raliya R, Biswas P, Saharan V (2019) Chitosan nanomaterials for smart delivery of bioactive compounds in agriculture. In: Raliya R (ed) Nanoscale engineering in agricultural management. CRC Press, Boca Raton, pp 1–16
Alyasi H, Mackey HR, McKay G (2019) Removal of cadmium from waters by adsorption using nanochitosan. Energy Environ:0958305X19876191. https://doi.org/10.1177/0958305X19876191
Sharaf OM, Al-Gamal MS, Ibrahim GA, Dabiza NM, Salem SS, El-ssayad MF, Youssef AM (2019) Evaluation and characterization of some protective culture metabolites in free and nano-chitosan-loaded forms against common contaminants of Egyptian cheese. Carbohydr Polym 223:115094. https://doi.org/10.1016/j.carbpol.2019.115094
Khati P, Chaudhary P, Gangola S, Bhatt P, Sharma A (2017) Nanochitosan supports growth of Zea mays and also maintains soil health following growth. 3 Biotech 7:81. https://doi.org/10.1007/s13205-017-0668-y
Zahedi SM, Karimi M, da Silva JAT (2020) The use of nanotechnology to increase quality and yield of fruit crops. J Sci Food Agric 100:25–31. https://doi.org/10.1002/jsfa.10004
Abdel-Aziz HMM, Hasaneen MNA, Omer AM (2019) Impact of engineered nanomaterials either alone or loaded with NPK on growth and productivity of French bean plants: seed priming vs foliar application. S Afr J Bot 125:102–108. https://doi.org/10.1016/j.sajb.2019.07.005
Sen SK, Chouhan D, Das D, Ghosh R, Mandal P (2020) Improvisation of salinity stress response in mung bean through solid matrix priming with normal and nano-sized chitosan. Int J Biol Macromol 145:108–123. https://doi.org/10.1016/j.ijbiomac.2019.12.170
Kuyyogsuy A, Deenamo N, Khompatara K, Ekchaweng K, Churngchow N (2018) Chitosan enhances resistance in rubber tree (Hevea brasiliensis), through the induction of abscisic acid (ABA). Physiol Mol Plant Pathol 102:67–78. https://doi.org/10.1016/j.pmpp.2017.12.001
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Robledo-Olivo, A., Cabrera-De la Fuente, M., Benavides-Mendoza, A. (2021). Application of Nanosilicon and Nanochitosan to Diminish the Use of Pesticides and Synthetic Fertilizers in Crop Production. In: Kharissova, O.V., Martínez, L.M.T., Kharisov, B.I. (eds) Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications. Springer, Cham. https://doi.org/10.1007/978-3-030-11155-7_47-1
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