Abstract
A field experiment was conducted from April to September in 2018 at Nobogram Agro farm, Noakhali, Bangladesh. The experiment was done to determine the effect of organic and inorganic fertilizers on growth and yield of country bean (Lablab purpureus L.) in Summer Season. The experiment comprises on country bean local variety named ‘Epsha-2’. There were four treatments viz., T1= Control (no fertilizer are used), T2= Inorganic (TSP 0.50 gm/pit + Gypsum 200 gm/pit + MOP 250 gm/pit), T3= Cowdung (5 kg/pit) and T4= FYM (5 kg/pit) and the experiment was laid out in Randomized Complete Block Design (RCBD) with six replications. The parameters of the experiment were the percentage of seed germination, plant height at four-leaf stage (cm), days to first flowering (days), number of pod per plant, individual pod length (cm), pod width (cm) and pod weight (gm).Among all treatments farmyard manure (FYM) was responsible for a higher percentage of seed germination (100%), maximum plant height during four-leaf stage (6.08 cm), accelerated days to first flowering (48 days), increased pod number per plant (220.33), the maximum number of individual pod length (6.87 cm), pod width (2.07 cm) and pod weight (5.53 gm) over other treatments in summer country bean. So the results showed that farmyard manure strongly influenced plant growth and yield component of the country bean. In brief, application of FYM is necessary to increase country bean production in summer season.
Highlights
Country bean botanically known as Lablab purpureus L.which is a legume species
The results showed that farmyard manure strongly influenced plant growth and yield component of the country bean
Number of pods per plant This study revealed that statistically significant differences existed among all treatments for average number of pods per plant (Figure 4).Data showed the highest pods number per plant (220.33) was observed from T4 (FYM) treatment, while the lowest (127.83) related to T1(Control) treatment
Summary
Country bean botanically known as Lablab purpureus L.which is a legume species. It is a selfpollinated crop belonging to the family Fabaceae. The foliage of the crop used as silage and green manure (Preetham, Kumar, Srinivas, Rao, & Ramprakash, 2020) It occupies a unique position as vegetable among the legume crops due to its high nutritive value (Basu, Samantha, & Sasmala, 2002).Total land area under country bean cultivation is 50888 acres, and the production is 134860 metric tons during 2017-18 (Bangladesh Bureau of Statistics, 2018). Country bean is mostly grown in winter season, but due to its photo and thermo sensitive behaviour, availability of country bean is restricted during the winter season (Roy, Islam, & Debnath, 2014) To minimize this problem Olericulture division of Bangladesh Agricultural Research Institute have been successfully developed some photo and thermo insensitive country bean through genetic manipulation which are suitable for the summer season (Anonymous, 2011).But pod bearing potentiality of those varieties is very poor because the poor holding of flower during the offseason. This research investigated to find out the response of country bean to organic and inorganic fertilization and to identify the possible fertilizer treatment which enhances country bean production during the summer season
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