Download - Usage of Nanotechnology in Agriculture
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NANOTECHNOLOGY USED IN AGRICULTURE
Uva Wellassa university of Sri lanka
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Introduction• Nanotechnology refers to controlling, building,
and restructuring materials and devices on the scale of atoms and molecules
• A nanometer (nm) is one-billionth of a meter
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Nanotechnology for Crop Biotechnology
• Three-dimensional molecular structures• DNA crystals • The DNA crystals have “sticky-ends” or small
cohesive sequences• lattice-like structure that extends in six different
directions, forming a three-dimensional crystal• This technique could be applied in improving
important crops
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Nanoparticles and Recycling Agricultural Waste
• Nanotechnology is also applied to prevent waste in agriculture
Ex: - cotton industry Cotton fabric or garment
waste (cellulose or the fibers )
Low -valued products (cotton balls, yarns)
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Fertilizer or pesticide absorbent
• Scientists produce 100 nanometer-diameter fibers • It can be used as a fertilizer or pesticide absorbent• The technique is called as electrospinning• These high-performance absorbents allow
targeted application at desired time and location.
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Ethanol production
• Ethanol production from maize feedstocks has increased the global price of maize
• Cellulosic feedstocks are now regarded as a viable option for biofuels production
• Nanotechnology can enhance the performance of enzymes used in the conversion of cellulose into ethanol
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• Scientists are working on nano-engineered enzymes that will allow simple and cost-effective conversion of cellulose from waste plant parts into ethanol
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Disposal of rice husk
• Rice husk can be used as a source of renewable energy
Rice husk Thermal energy A large amount or bio fule of high-quality
nanosilica
Making other materials ex :- glass, concrete
• Through nanotechnology can reduce the growing risk of rice husk disposal concern
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Nanotech Delivery Systems for Pests, Nutrients, and Plant Hormones
• Nanosensors and nano-based smart delivery systems could help in the efficient use of agricultural natural resources like water, nutrients and chemicals through precision farming.
• Through the use of nanomaterials and GPS with satellite imaging of fields, remotely detect crop pests or evidence of stress such as drought.
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• Once pest or drought is detected, there would be automatic adjustment of pesticide applications or irrigation levels.
• Nanosensors dispersed in the field can also
detect the presence of plant viruses and the level of soil nutrients.
• Nanoencapsulated slow release fertilizers have also become a trend to save fertilizer consumption and to minimize environmental pollution
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• Nanobarcodes and nanoprocessing could be used to monitor the quality of agricultural produce
• Through nanotechnology, scientists are able to study plant’s regulation of hormones
ex:- auxin – induce root growth and seedling establishment
• Has developed a nanosensor that reacts with auxin
• It can measure auxin concentration at a particular point using electric signal
• It helps to understand how plant roots adapt to their environment, especially to marginal soils
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Recent Developments
• The scientists have planned to develop a plastic storage bag lined with nanoparticles
• A milk container was designed with a nanopatterned, antimicrobial coating that helps the diary farmers
• The scientists have planned to develop nanopatterned paper sensors to detect bovine pregnancy to determine if the cows will run dry without milk due to udder infection or pregnancy
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Impacts of nanotechnology in agriculture
• Have many potential applications in a variety of fields
• Carbon nanotubes can be used to recognize and fight viruses and other pathogens
• However, results of studies in animals have raised concerns about the potential toxicity of nanoparticles
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Conclusion• Nanotechnology is capable of being used in
agricultural products that protect plants and monitor plant growth and detect diseases
• Scientists are still seeking new applications of nanotechnology in agriculture and the food industry
• The agricultural sector and the food industry will indeed see tremendous changes for the better in the coming years
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Thank you