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Allelopathic Effects of Eucalyptus Camaldulensis on Germination and Seedling Growth of Mungbean

Md. Obaidullah Shaddam
Dept. of Agronomy, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur

Most. Mohoshena Aktar
Dept. of Agronomy, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur

Aurun kanti Roy Shiton
Dept. of Plant Pathology, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur, Bangladesh

Md Sohidul Islam
Dept. of Agronomy, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur

Md. Mominur Rahman
Dept. of Agronomy, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur

Abstract/ Executive Summary:

The term of allelopathy, whereby one plant chemically interferes with seed germination, growth and development of others has been documented for over 2000 years. Allelochemicals are secondary metabolites of plants, released into the nearby environment through volatilization, leaching, root exudation and decomposition of residues. This experiment was aimed to examine the allelopathic effect of aqueous extracts of Eucalyptus leaves on seed germination and early growth of mungbean. Two pot experiments were carried out at Agronomy laboratory and research field, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur during February 2017 to March 2017 to find out the response of mungbean variety on Eucalyptus camaldulensis leaf extract. For screening four mungbean varieties (BARI Mung-3, BARI Mung-4, BARI Mung- 5 and BARI Mung-6) were tested with five levels of Eucalyptus camaldulensis leaf extract as allelopathic chemical (0, 5, 10, 15 and 20% concentration) for 8 DAS in small plastic pot. The germination rate of mungbean varieties was delayed and germination percentage was reduced with increasing leaf extract concentration compared to control. Fresh and dry weight of seedling was also lessened significantly compared to control. The inhibitory effects of Eucalyptus leaves were augmented as the extract concentration increased. These findings revealed that eucalyptus leaf extract adversely affect the germination and seedling growth of mungbean.

Keywords: Eucalyptus, Extract concentration, Allelopathic effects, Mungbean

Location: Agronomy laboratory and research field, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur

Start Date: 00-02-2017

End Date: 00-03-2017

Program Area: Variety and Species

Commodity: Mungbean

Objectives:

The present study was carried out to know the effect of different concentrations of E. camaldulensis leaf extracts on the mungbean seed germination and seedling growth.

Methodology:

The experiment was conducted at Agronomy Laboratory, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur during the period of February to March 2017. The leaves of E. camaldulensis L. were collected from alongside the road in the Faculty of Agriculture, HSTU, Dinajpur. These leaves were washed and then sun-dried for two weeks, ground and stored at room temperature. Good quality seeds of 4 mungbean varieties (BARI Mung-3, BARI Mung-4, BARI Mung-5 and BARI Mung-6) were collected from Bangladesh Agricultural Research Institute (BARI). The experiment was carried out in CRD design and replicated three times. The ground/powdered leaves material was soaked in distilled water in the ratio of 1:20 and kept for 24 hours. The filtrate was designated as stock solution of 100% concentration. From this stock solution, other concentrations viz., 5, 10, 15 and 20% were prepared by diluting it with distilled water and the control contained only distilled water. The data were recorded on germination, fresh and dry weight of stem and root. The data recorded were statistically analyzed and significant means were separated by using Least Significant Difference Test.

Source of Information: Journal of Bioscience and Agriculture Research, 2020, 23(01), 1894-1900.

Article Link (Online Journal): https://doi.org/10.18801/jbar.230120.233

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The present study revealed that extract of Eucalyptus camaldulensis at various concentration levels inhibited the germination, reduced fresh and dry weights of mungbean seedlings. BARI Mung-5 showed better performance in terms of 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 suppressed 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.

Knowledge Management: Journal