Author(s): Jnanesha AC, Ashish Kumar and Vanitha TK

Abstract: A trial was carried out during summer season of 2018, to know the variation in yield and chemical composition of Eucalyptus species under different agro-climatic regions of India. The sample collected from different parts of India viz., Northern, Central and Southern region of India. From the trial it can be noticed that, the herbage yield obtained from northern region recorded higher herbage yield ((3415 kg ha^-1) compared to rest of the region and was followed by central region (3085 kg ha^-1). However, the oil collected from southern region recorded higher per cent of oil (1.1%) and oil yield (30.6 kg ha^-1) as compared to rest of the region and was followed by central region. Chemical composition with regard to α-pinene, β-pinene and 1-8 cineole + limonene also varies with different agro-climatic condition. Essential oil collected from southern region shows higher per cent of α-pinene (23.53 %) and 1-8 cineole + limonene (66.43 %) compared to rest of the region and was followed by central region (20.19 % & 28.45 %). Whereas, β-pinene was higher in case of central region (17.17%) compared to others and was followed by northern region (4.58 %).