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Research Article Open access CC BY 4.0

Assessing the Effectiveness of Neem oil and Microalgae in the Management of Cowpea (Vigna unguiculata L.) Leaf Spot Caused by Alternaria spp.

Gorentla Ajith Kumar, Sobita Simon

International Journal of Plant & Soil Science · pp. 450–459 · Published 10 May 2024

10.9734/ijpss/2024/v36i64647

Abstract

The current study aimed to assess the effectiveness of neem oil and microalgae in controlling leaf spot caused by Alternaria spp. in cowpea (Vigna unguiculataL.). The research was conducted during the Zaid season of 2022 at the Central Research Field of the Department of Plant Pathology, SHUATS, Prayagraj, Uttar Pradesh, using a Randomized Block Design with three replications and seven treatments. Analysis of variance (ANOVA) was utilized to draw conclusions from the data. Leaf spot disease caused by Alternaria spp poses a significant threat to cowpea crops, resulting in yield losses and decreased plant vigor. An in vivo study was carried out to evaluate the impact of different concentrations of microalgae combined with neem oil at 1% on plant growth parameters and Disease Intensity (%). The application of microalgae @540 grams in various splits and neem oil @1% was done. Among all the treatments, T4 (Microalgae 48gms @5 DAS 96gms@15,45 DAS + Neem oil @1% showed promising results. Notably, the T4 treatment significantly increased plant height (84.63 cm) and the number of branches(10.83) at60DAS. Moreover, an increased numberof nodules per plant (21.44) was observed at 75 DAS, indicating improved root health and nitrogen fixation. Additionally, the treatment led to longer pod length (34.44 cm) in three pickings, suggesting enhanced yield potential. Furthermore, the combined application of microalgae and neem oil resulted in a significant reduction in disease intensity, with a notable decrease of 24.47% compared to untreated plants and those treated with chemicals (Bavistin). This indicates that the use of microalgae and neem oil together effectively suppressed leaf spot disease caused by Alternaria spp. in cowpea, thereby improving plant health and productivity. In conclusion, these findings underscore the potential use of eco-friendly alternatives like microalgae and neem oil for managing leaf spot disease in cowpea cultivation. Further research in this area is recommended for sustainable agricultural practices.

Alternaria micro algae neem oil leaf spot disease intensity zaid: foliar

References (8)

  1. 1 Medicinal Properties of Neem Leaves: A Review [DOI]
  2. 2 Expounding the production and importance of cowpea ( Vigna unguiculata (L.) Walp.) in Ethiopia [DOI]
  3. 3 The Fungi, An Advanced Treatise
  4. 4 Azadirachta indica leaf extract induces resistance in barley against leaf stripe disease [DOI]
  5. 5 Microalgae: An Untapped Resource for Natural Antimicrobials [DOI]
  6. 6 Comparative Efficacy of Biological, Botanical and Chemical Treatments Against Damping Off Disease of Tomato in Chitwan [DOI]
  7. 7 Efficacy of Micro Algae and Thyme Essential Oil in the Management of Alternaria Leaf Spot of Broccoli (Brassica oleracea var. italica) [DOI]
  8. 8 Detection of fungal pathogen, Alternaria alternata associated with mungbean and its management [DOI]

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