Biotic Resistance, Quality, and Storage Behavior of Potato (Solanum Tuberosum L.) as Influenced by Bio-Stimulants

Mohammad Nasim  Ayobi; A. P. Mallikarjuna  Gowda; Manjunath B; Rahmat Gul  Hassanzai

doi:10.62810/jnsr.v4i2.358

Authors

Mohammad Nasim Ayobi Kabul University, Department of Horticulture, Faculty of Agriculture, Kabul Afghanistan
A. P. Mallikarjuna Gowda University of Agricultural Sciences, Zonal Agricultural Research Station, G. K. V. K, Bengaluru-560065, India
Manjunath B University of Agricultural Sciences, Zonal Agricultural Research Station, G.K.V.K, Bengaluru, Karnataka-560065, India
Rahmat Gul Hassanzai Kabul University, Department of Horticulture, Faculty of Agriculture, Kabul Afghanistan

DOI:

https://doi.org/10.62810/jnsr.v4i2.358

Keywords:

Potato, Bio-stimulants, Biotic resistance, Quality, Storage behavior

Abstract

The study was conducted at Zonal Agricultural Research Station, University of Agricultural Sciences, GKVK, Bangalore, to assess the impact of various bio-stimulants on the biotic resistance, quality, and storage behavior of potato (Solanum tuberosum L.) during the Ll, 2022-23, and R, 2023. The experiment was designed as a randomized complete block design (RCBD) with nine treatments and three replications, using bio-stimulants such as humic acid, amino acids, seaweed extracts, and microbial consortia. The treatment combination of whole tubers + RDF + Humic acid at 2 mL L^-1 significantly enhanced plant resistance against pests and diseases. This treatment led to the lowest aphid and cutworm populations, reduced tuber moth infestation, and minimized the incidence of early blight, late blight, and bacterial wilt compared to the control—further, the same treatment combination improved tuber quality, viz., TSS and starch content. Additionally, it resulted in lower percentage of physiological loss of weight (PLW) and sprouting during storage under room temperature, with minimal tuber rot. In contrast, the control treatment recorded the highest pest populations, disease incidence and post-harvest losses. These findings suggest that the treatment comprising whole tubers, RDF, and Humic acid at 2 ml L^-1 effectively improves biotic resistance, quality, and storage behavior of potatoes under ambient conditions.

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