Effect of nano scale plant nutrients on seedling characters of Blackgram (Vigna mungo (L.) Hepper)

Abstract

A laboratory study was taken up during 2017 at Crop Physiology laboratory, S.V. Agricultural College, Tirupati where blackgram seeds were treated with nano scale oxides of Zn, Mg and Fe at different concentrations along with bulk ZnSO4, MgSO4 and FeSO4 (@ 0.2%) on seedling characters of blackgram. Significant differences were observed among treatments under each micronutrient. Blackgram seeds responded variably towards the treatments of both bulk FeSO4, MgSO4 and ZnSO4 and nano scale Fe Oxide, Mg Oxide aand Zn Oxide particles. Among the treatments nano scale Zn Oxide @ 200ppm, nano scale Mg Oxide @ 100ppm and nano scale Fe Oxide @ 200ppm recorded higher seedling vigour index (SVI) compared to respective bulk treatments. The study reveals the promontory effect of nano particles depends on its concentration and nano scale Zn Oxide @ 200ppm, Mg Oxide @ 100ppm and Fe Oxide @ 200ppm found effective in enhancing seed germination and seedling growth of blackgram.