MANAGEMENT OF PURPLE BLOTCH AND WHITE BLOTCH OF ONION USING CHEMICALS, MICRONUTRIENTS AND  BOTANICALS

KANTA, SALVIA AMAN

dc.contributor.author	KANTA, SALVIA AMAN
dc.date.accessioned	2021-09-08T09:11:28Z
dc.date.available	2021-09-08T09:11:28Z
dc.date.issued	2020
dc.identifier.uri	http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/3546
dc.description	A field experiment was carried out in the central farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during October 2019 to March 2020.The experiment was conducted to evaluate the effect of selected chemicals, micronutrients and botanicals in controlling purple blotch complex of onion. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications and local variety faridpuri was used as a planting material. In this experiment, three fungicides viz. Indofil, Mancer and Ridomil Gold, three micronutrients viz. Zinc, Boron and Magnesium and two botanical extracts namely neem and eucalyptus were used to evaluate their effect on disease incidence, percent disease index, number of leaves per plant,leaf length, bulb diameter, bulb weight (fresh and dry) and yield. Among the treatments, chemical fungicide Ridomil Gold gave better performance in comparison to other treatments. Data was recorded at 70, 80 and 90 days after transplanting and it was found that the lowest disease incidence (52.67%) and percent disease index (49.00%) was recorded in Ridomil Gold treated plots with the highest number (9.77) and length (43.43cm) of leaf. It was also found that the highest bulb diameter (18.23 cm), single bulb weight (47.98 g), fresh weight (3.16 Kg/plot), dry weight (2.88Kg/plot) were also obtained from Ridomil Gold treated plots. This treatment also gave the highest yield (9.60 t ha -1 ) followed by Indofil (8.20 t ha ii -1 ) and Mancer (7.90 t ha -1 ). Among the nine treatments, Ridomil Gold also increased yield by 54.34% over control treatment. Boron and eucalyptus leaf extract was given satisfactory results in all considering parameters tested in the experiment. However, chemical fungicide performed better than micronutrients and botanical leaf extracts.	en_US
dc.description.abstract	A Thesis Submitted to the Faculty of Agriculture Sher-e-Bangla Agricultural University, Dhaka, In partial fulfillment of the requirements For the degree of MASTER OF SCIENCE IN PLANT PATHOLOGY	en_US
dc.language.iso	en	en_US
dc.publisher	DEPARTMENT OF PLANT PATHOLOGY	en_US
dc.subject	WHITE BLOTCH OF ONION , MICRONUTRIENTS AND BOTANICALS	en_US
dc.title	MANAGEMENT OF PURPLE BLOTCH AND WHITE BLOTCH OF ONION USING CHEMICALS, MICRONUTRIENTS AND BOTANICALS	en_US
dc.type	Thesis	en_US