Open Access

Comparative Efficacy of Bio-Agents and Chemicals Against Guava Fruit Rot In Commercial Orchards Of Vaishali, Bihar

Volume 3, Issue 9

  • Author(s)Manisha Kumari, Manoj Kumar and V K Prabhat
  • Affiliation1. P.G.Department of Botany, Magadh University, Bodh Gaya. 2. Department of Botany, S. N. Sinha, college ,Tekari ,Gaya. 3. P. G. Department of Botany, Ram Yas P. G. College, Malak ,Balu, Nawabganj, Prayagraj.
  • Page No.1-4
  • Volume, Issue & YearVolume 3 Issue 3,Sep-2026
  • Published On05/09/2026
  • JournalInternational Journal of Advanced Multidisciplinary Application (IJAMA)
  • ISSN No.3048-9350

Abstract

Guava Psidium guajava L. is one of the most important tropical and subtropical fruit crops grown widely in India. In Bihar, Vaishali district is recognized as a major belt for ommercial guava cultivation due to favorable agro-climatic conditions. However, the production and productivity of guava is severely affected by various diseases, among which fruit rot is the most destructive and causes significant economic losses to the growers. The disease is caused by several fungal pathogens and leads to 30-45% loss during pre and post-harvest stages. Farmers generally depend on chemical fungicides for management but indiscriminate use results in environmental pollution, health hazards and development of resistance in pathogens. In recent years, there has been increasing demand for eco-friendly and sustainable approaches like use of bio-agents and botanicals. Keeping this in view, the present investigation was carried out during 2021-2022 in commercial guava orchards of Vaishali district to evaluate and compare the efficacy of bio-agents, botanicals and chemical fungicides against fruit rot. Five treatments including Carbendazim 0.1%, Trichoderma viride 1%, Neem leaf extract 10%, Integrated Disease Management and control were evaluated. Three sprays were applied at 15 days interval during fruiting stage. The results revealed that Integrated Disease Management was most effective in reducing disease incidence to 12.4% and increasing yield to 18.6 kg per plant. Among individual treatments, Trichoderma viride performed better and gave higher cost-benefit ratio. The study concludes that bio-agents can be effectively integrated for sustainable management of guava fruit rot in Vaishali region.

Keywords: Guava, Fruit rot, Bio-agent, Trichoderma viride, Chemical, IDM, Vaishali, Bihar

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