Full Length Research Paper

Effect of chitosan application on plant characters, yield attributes and yield of mungbean

Sk. Md. Fazlay Rabbi1, Md. Mustafizur Rahman1, M. Monjurul Alam Mondal2, Shamal Kumar Bhowal3*, Md. Azmarul Haque4

Abstract

A pot experiment was conducted at the pot yard of Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh during the period from March to May 2011 to investigate the effect of Chitosan application on morphological and biochemical characters, yield attributes and yield in mungbean. The experiment comprised five levels of Chitosan concentrations viz., 0 (control), 25, 50, 75 and 100 ppm and two recently released mungbean variety, BINAmung-7 and BINAmung-8. The experiment was laid out in a two factors completely randomized design with four replications. Chitosan was applied in two times at vegetative (30 days after sowing) and flower initiation stage (40 days after sowing). Application of Chitosan increased on morphological characters such as plant height, number of branches and leaves plant-1 and leaf area plant-1,total dry mass (TDM) production, biochemical parameters such as chlorophyll, nitrate reductase (NR) and photosynthesis in leaves, reproductive characters such as peduncle and scar number plant-1, yield attributes and seed yield in mungbean, whereas reproductive efficiency and harvest index decreased in Chitosan application. From the research findings, results showed that most of the plant parameters increased with increasing concentration of Chitosan till 50 ppm followed by a plateau. The highest seed yield plant-1(9.31 g) was recorded in 50 ppm Chitosan due to increased number of pods plant-1 and increased dry matter partitioning to economic yield. In contrast, the lowest seed yield plant-1 (7.28 g) was observed in control plants due to inferiority in yield attributes. Therefore, foliar application of Chitosan at the rate of 50 ppm spray at vegetative and reproductive stages may be used for getting increased seed yield in mungbean.

Key words: Chitosan application, mungbean, morphological characters, yield attributes and yield.

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