The impact of previously prepared potassium and iron in nano forms using gamma radiation on growth and productivity of green bean

Abstract

Potassium and iron oxide nanoparticles were prepared via gamma irradiation using PVA and PVP as stabilizers and capping agent to control the size of the particles. HRTEM indicated the formation of potassium and iron oxide nanoparticles within the polymeric network of PVA and PVP with mean sizes 12 nm and 2.38 nm, respectively. The ultraviolet visible (UV-vis) spectroscopy measurements show a distinct characteristic absorption peak indicating the formation of potassium and iron oxide nanoparticles. As for the agricultural application, an experiment was carried out during the two successive seasons of 2019 and 2020 seasons at National Research Centre's experimental Station, El Nobaria Region, Behira Governorate, Egypt. Results show that 8 ml/l of nano potassium and 9 ml/l of nano iron oxide scored the highest values of plant length, number of leaves and branches, total plant fresh weight, dry matter percentage and chlorophyll reading. As for pod yield and its component the same both previous concentrations gave the highest pod length, pod number per plant, pod fresh and dry weight and total yield per feddan. Also, both concentrations gave higher protein percentage, total soluble solids percentage, potassium percentage and iron concentration as well as lower fiber percentage than other treatments.

Radiation preparation and antimicrobial activity of Poly(PVA/starch/Ag NPs) nanocomposite towards Penicillium digitatum on citrus fruits

“…In addition, the peaks at 1837.7, 1715.57, and 1655 cm −1 have been ascribed to the C=O and C=C stretching modes respectively. 42…”

“…One more, the characteristic C-O-C ring vibration on starch gives rise to an absorbance peak appeared at around 987 cm À1 . 42 The O-H bending would raise a band appeared around 1313.29 cm À1 . Whereas the appearance of the peak found at 1384.34 cm À1 is suggested to C-H symmetric bending.…”

“…In addition, the peaks at 1837.7, 1715.57, and 1655 cm À1 have been ascribed to the C=O and C=C stretching modes respectively. 42 The C-C stretching vibrations of the planar zigzag carbon backbone are appeared around 835.6 cm À1 . 43 The uncommon CO 2 peaks at 1973.…”

“…The peak centered at 1145.96 is attributed to C-O-C asymmetric stretching. One more, the characteristic C-O-C ring vibration on starch gives rise to an absorbance peak appeared at around 987 cm À1 42. The O-H bending would raise a band appeared around 1313.29 cm À1 .…”

“…Furthermore, the band noticed at 1463.79 cm À1 point out CH 2 symmetric deformation. In addition, the peaks at 1837.7, 1715.57, and 1655 cm À1 have been ascribed to the C=O and C=C stretching modes respectively 42. The C-C stretching vibrations of the planar zigzag carbon backbone are appeared around 835.6 cm À1 43.…”