ALLELOPATHIC EFFECTS OF Eucalyptus camaldulensis ON SEED GERMINATION, GROWTH, YIELD AND YIELD CONTRIBUTING CHARACTER OF MUNGBEAN

Abstract

Three pot experiments were carried out at Agronomy laboratory and research field, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur during February 2017 to May 2017 to find out the response of mungbean variety on Eucalyptus camaldulensis leaf extract. For screening four mungbean variety (BARI Mung 3, BARI Mung 4, BARI Mung 5 and BARI Mung 6) were tested with five allelopathic levels (0, 5,10,15 and 20% concentration) for 8 DAS in sand culture in plastic pot and another five allelopathic levels (0, 5,10,15 and 20 % concentration) were test for 30 DAS in small plastic pot. The rate of germination of all mungbean variety was delayed and percentage was reduced with increasing level of eucalyptus leaf extract compared to control.BARI Mung 5 showed better performances in terms shoot and root growth (fresh and dry weights), lower reduction of germination percentage (GP), germination index (GI) and vigor index (VI). On the other hand BARI Mung 3 suppresed greatly in terms of fresh and dry weight, higher reduction of shoot and root lengths by the eucalyptus leaf extract. Shoot growth was more affected than root. Results on germination and seedling growth indicate that BARI Mung 5 was more tolerant and BARI Mung 3 was more sensitive variety. For determining yield and yield attributing characters of four Mungbean variety (BARI Mung 3, BARI Mung 4, BARI Mung 5 and BARI Mung 6), another experiments were carried out at Agronomy Research field, HSTU, Dinajpur during March 2017 to May 2017. Most of the growth and physiological characteristics viz., plant height, branches plant-1 , fresh and dry weight of leaf, stem, root and yield, yield attributing characters (number of pods plant-1 , pod length, number of seeds pod-1 , 1000seed weight, yield plant-1 ) performed better at control condition and showed the lowest performance in respect of all the treatment (5, 10, 15 and 20 % eucalyptus leaf extract) condition. Therefore, BARI Mung 5 performed better with eucalyptus leaf extract than the other variety (BARI Mung 3, BARI Mung 4 and BARI Mung 6).