Author(s):

Lochan Sharma, RS Kanwar and OP Bishnoi

Abstract: A pot experiment was done for studying the effect U. agropyri and different inoculum levels of Heterodera avenae on wheat cultivar HD 2967. The experiment was conducted under screen house conditions in Department of Nematology, CCS HAU, Hisar during Nov. 2018 – April 2019. SPAD chlorophyll content was measured 30, 40, 50 and 60 days after sowing, while plant height and plant weight at crop maturity. Maximum reduction in plant height and plant weight was observed at highest inoculum level (15 eggs and juveniles/ g soil) of nematode. SPAD chlorophyll content increased from 30-60 days after sowing and was maximum at 60 days after sowing. Per cent reduction in chlorophyll increased from 30-60 days after sowing and maximum reduction was observed at 60 days after sowing in 15 eggs and juveniles/ g soil of Heterodera avenae and Urocystis agropyri.

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