Vol. 10, Issue 10 (2021)

Author(s):
RS Mishra

Abstract:
Ashwagandha (Withania somnifera) plants are major source of alkaloids including tropine, pseudotropine and somniferine. Which are used in pharmaceutical industries. Leaf spot disease caused by Alternaria alternate is found severe form in Uttar Pradesh. Therefore, study has been done for management of leaf spot disease with fungicides and organics and their effects on biomass production of Ashwagandha. The minimum leaf spot intensity was recorded in Ridomil MZ (4.80%) followed by Kovach (4.93%), Antracoal (5.30%), Streptocycline sulphate (6.93%), Bayleton (7.47%) and Metalaxyl (8.07%) at 10 days after 1^st spray. 10 days after second spray, the lowest disease intensity was recorded in Kovach (8.40%) followed by Redomil (8.53%, Antracoal (10.80%) and Streptocycline sulphate (11.47%). The number of berry per plants was recorded highest in Kovach (81.67) followed by Trichoderma (80.10), cow urine (76.33) and Redomil (74.33). Average number of berry per plants was found 55.07 in control. The maximum seed yield per plot was observed in Ridomil (0.670 kg) followed by Kovach (0.672 kg), Trichoderma harzianum (0.671 kg) and panchgavya (0.671 kg). Percent disease control was recorded maximum in Ridomil MZ (65.78) followed by Kavach (64.12) and Antracol (60.15). In case of organics, highest control was found in P. fluorescens (34.74%) followed by Trichoderma harzianum (31.75%) and Panchgavya (31.03%).