Vol. 9, Special Issue 10, Part T (2025)

The present investigation entitled “Studies on Bio-stimulants and Bio-pesticides Efficacy on Cultivation of Cauliflower (Brassica oleracea var. RZ-Tirsuli) Under malwa condition of Madhya Pradesh” The present experiment was laid out at Horticulture Research Farm, Department of Horticulture, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Indore, (M.P.) during the Rabi season 2023-24. During the investigation, the 09 treatments viz., T₁ (Control), T₂ (Humic acid @ 2 ml/L), T₃ (Amino acid @ 2 ml/L), T₄ (Neem oil @ 5 ml/L), T₅ (Bacillus thuringiensis @ 5 ml/L), T₆ (Humic acid @ 2 ml/L+ Neem oil @ 5 ml/L), T₇ (Humic acid @ 2 m/L+ Bacillus thuringiensis @ 5 ml/L), T₈ (Amino acid @ 2 ml/L+ Neem oil @ 5 ml/L) and T₉ (Amino acid @ 2 ml/L+ Bacillus thuringiensis @ 5 ml/L) replicated three times with RBD experimental design. The study investigated the Studies on Bio-stimulants and Bio-pesticides Efficacy on Cultivation of Cauliflower (Brassica oleracea Var. Botrytis). Several treatments were evaluated, with the combination of Humic acid and Bacillus thuringiensis (T₇) showing the most significant improvements across various growth parameters. At 15, 30, and 45 days after transplanting (DAT), T₇ demonstrated the highest plant height, number of leaves, stem diameter, outpacing other treatments and the control. In terms of reproductive growth, T₇ also accelerated days to curd initiation, and days to curd maturity. Moreover, T₇ resulted in the highest curd compactness (23.23 g), per plot (10.65 kg), and per hectare (117.75 q). It also significantly improved fruit quality, with the highest curd dry matter (%) at 11.36% and ascorbic acid (mg) (54.94 mg). Disease intensity (PDI %) and pest incidence (PPI%) were lowest in T₈, indicating better pest and disease management. Despite higher T₈ exhibited a favourable benefit-cost ratio of 1.68, indicating its potential as an effective treatment for improving cauliflower productivity and quality.