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Copper nanomaterials due to their unique properties are rapidly finding place as an important component of next-generation material in various sectors such as electronics, machinery, construction, engineering, pharmaceutical, agriculture, energy, environment etc In fact in past decades, researchers have devoted several studies to Cu nanomaterials, and have achieved many innovative results from synthesis to applications, highlighting its immeasurable potential for extensive practical and theoretical applications holding great promises. This review emphasises on the recent progress made in synthesis of copper nanoparticles by various techniques such as physical, chemical and biological methods. The application section describes their utility in several sectors including agriculture, environment, construction, electronics etc Moreover, the emphasis was also laid to understand the uptake mechanism of the copper nanoparticles by plants, the toxicity caused at higher concentrations and the associated implications of exposure to both human and environmental health, including the challenges and difficulties to be addressed in the future.

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Nanotechnology is evolving as an important field of sciences due to its promising role in the agricultural sector. Nanotechnology is being increasingly used to improve crop yield and reducing the harmful agents used in crop protection. Recently silver nanoparticles have gained utmost attention due its uses in various areas of human interest whether it be agriculture, industry, medicine and human health. They are the most popular metallic nanoparticles and its various antimicrobial and antioxidant as well as anticancer properties have been reported. This mini review aims to present and discuss development of cost effective techniques for the synthesis and recovery of silver nanoparticles that have agricultural importance. Many of its applications in plant disease control and other aspects such as their role as nanopesticides or nanofertilizers have been discussed.