Ecology, Environment and Conservation Paper

IMPACT OF WEATHER PARAMETERS ON DISEASE INTENSITY OF WHITE RUST OF BRASSICA JUNCEA

Amanpreet Singh Sran, Manpreet Kaur Chahal, Divya Mittal, Onkar Singh Sidhu,Bahaderjeet Singh, Ram Singh, Parvesh Kumar, Paryotampal Kaur, Shivam,Jasvinder Kaur Sran, Anil Kumar,Amandeep Kaur, Rahul Bhad and V S. Pahil

Abstract

India is one of the major producers of oilseed crops in the global oilseed market. Rapeseed-mustard is oneof the seven edible oilseed crops grown in India, and it holds a unique place in the country’s agriculturaleconomy and social structure. Of all the biotic and abiotic stresses that threaten mustard crop, white rustcaused by an obligate biotrophic fungus Albugo candida is one of the most devastating. The experimentswere conducted at Guru Kashi University, Talwandi sabo (Punjab) under the field and laboratory conditionsto study the management of white rust during Rabi season 2018-2019. In the present study, Correlationanalysis of disease intensity with weather factors indicated that maximum temperature (17.9-22.1°C) andminimum temperature (2.2-9.4°C), maximum relative humidity (85.4–92.6%), and total rainfall (mm) hassignificant positive correlation with disease intensity, while minimum relative humidity (45.0-63.7%) has asignificant negative correlation. Temperature (min.) and Rainfall were found to have maximum positivecorrelation and significantly with disease intensity than other weather parameters. Hence, it meanstemperature (Min.) and rainfall increases the disease intensity of white rust of mustard.