The propagation characteristics of nonlinear ion-acoustic (IA) solitary waves (SWs) are studied in thermal electronpositron-ion plasma considering the effect of relativistic positron beam. Starting from a set of fluid equations and using the reductive perturbation technique, we derive a Korteweg-de Vries (KdV) equation which governs the evolution of weakly nonlinear IA SWs in relativistic beam driven plasmas. The properties of the IA soliton are studied, and it is shown that the presence of relativistic positron beam significantly modifies the characteristics of IA solitons.

Our interest is to study the nonlinear wave phenomena in complex plasma constituents with Maxwellian electrons and ions. The main reason for this consideration is to exhibit the effects of dust charge fluctuations on acoustic modes evaluated by the use of a new method. A special method (G′/G) has been developed to yield the coherent features of nonlinear waves augmented through the derivation of a Korteweg-de Vries equation and found successfully the different nature of solitons recognized in space plasmas. Evolutions have shown with the input of appropriate typical plasma parameters to support our theoretical observations in space plasmas. All conclusions are in good accordance with the actual occurrences and could be of interest to further the investigations in experiments and satellite observations in space. In this paper, we present not only the model that exhibited nonlinear solitary wave propagation but also a new mathematical method to the execution.

Zinc and Iron are essential micronutrient for both plant growth and human health but it is often reported to be deficient in regions where rice is use as staple food. Although significant progresses are made in understanding genetic and molecular mechanism of micronutrient acquisition but these need to be characterize to increase the bioavailability of these micronutrients. Biofortification is suggested to be a sustainable and costeffective approach in this perspective and for that combination of various agronomic and genetic strategies should be put in place without delay.

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