《粵音正讀字𢑥》 also mentions this character in the 日常錯讀 list at the back.
It gives the compound 桿菌 as an example and states that gon1 is the 粵音正讀， 趕(gon2) is the reading given in 《粵音字𢑥》(by 黃錫淩） and it also says that gon2 is the 日常錯讀
Chinese-English dictionary (2009) by chinese university press (not to be confused with the chinese university website) gives the reading as gon2 and two compounds are used for an example: 桿子 and 桿菌
《兩用中文字典》（published 1977) gives the cantonese reading as: 趕 （no romanization is provided)
And 《中華新詞典）2012 gives it as follows: 桿： 粵gon1 (乾）又 gon2 (趕）
It gives the compound 桿菌 as an example and states that gon1 is the 粵音正讀， 趕(gon2) is the reading given in 《粵音字𢑥》(by 黃錫淩） and it also says that gon2 is the 日常錯讀
Chinese-English dictionary (2009) by chinese university press (not to be confused with the chinese university website) gives the reading as gon2 and two compounds are used for an example: 桿子 and 桿菌
《兩用中文字典》（published 1977) gives the cantonese reading as: 趕 （no romanization is provided)
And 《中華新詞典）2012 gives it as follows: 桿： 粵gon1 (乾）又 gon2 (趕）