PJB-2025-261
Performance of BAU-Biofungicide, Chemicals, Plant Extracts on Black Point of Wheat causing Bipolaris sorokiniana (Sacc.) Shoemaker, Yield, Seed Health and Plant Vigour
Dr. Md. Aminul Islam Khan.
Abstract
The experiment studied the efficacy of fungicide Tilt 250 EC (Propiconazole), plant inducer Bion, two botanicals viz. garlic clove extract (Allium sativum L.), neem leaf extract (Azadirachta indica A. Juss) and one bio-agent (Trichoderma based preparation) in controlling black point disease (Bipolaris sorokiniana (Sacc.) Shoemaker) of wheat cv. Prodip on seed health, seedling vigour and yield attributes under field condition from November, 2015 to April, 2018. In this study, seedling emergence of 70.29% in maximum, the lowest seedling mortality (10.64%) and the highest seedling stand (89.36%) that were notably evident in BAU-Biofungicide (3%) treated seed with spray (T5) when it was sprayed under field condition across three consecutive years. Moreover, effective tillers in maximum number and length of ear in the highest attribution were found to be significant of 258.33and 19.97 cm, respectively in T5 treatment while Tilt (0.1%) sprayed plot exhibited statistically similar significant number of effective tillers (257.67), which was very close to T5 treatment. Nonetheless, Tilt (0.1%) yielded the highest 1000- grain weight, contributing grain yield 3920.0 Kg/ha in maximal among the treatments and its closest effect on 1000-grain weight was determined in T5 treatment which contributed to higher yield of 3692.0 Kg/ha. Besides, grain yield and disease severity showed significant relation one another which magnificently resulted in negatively correlated during the year of 2015- 16, 2016-17 and 2017-18, suggesting that grain yield of wheat declined at 32.03 kg/ha, 40.15 kg/ha and 40.91 kg/ha, respectively due to one unit disease score positively variation. In harvested seeds, spraying of Tilt (0.1%) greatly reduced seed borne incidence of B. sorokiniana, F. moniliforme, F. oxysporum, A. tenuis, C. lunata and A. flavus while seed borne infection was defined with superior reduction in seed treatment with T5 treatment. Moreover, T5 treatment significantly revealed superior effect over all other treatments that generated by 30.54 vigour index of harvested seeds, although Tilt (0.1%) contributed the highest vigour index 31.17. In consequent analysis, T5 treatment marked the highest contribution to yield attributes leading to maximized grain yield, whilst seed treatment with BAU-Biofungicide (3%) + BAU-Biofungicide spray (3%) treatment may be turned for eco-friendly management of black point of wheat in enhancing maximized yield and seed health compared to preferred economic threshold and healthy crop production alternative to chemical fungicides.
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