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A field experiment was conducted in the Agroforestry Field Laboratory of Bangladesh Agricultural University (BAU), Mymensingh, during the period from November 2016 to April 2017 to find out the response of Rain tree (Samanea saman), Ipil-Ipil (Leucaena leucephala), and Minjiri (Senna siamea), leaves biomass with different fertilizers dose applications to yield and yield contributing character of Chinese Hybrid Rice cv. SQR6. Ten treatments were used for the Randomized Complete Block Design (RCBD) with three replications. The results showed that green LB had a significant effect on crop characters viz., plant height, panicle length, no. of tillers hill-1, no. of leaves hill-1, no. of panicles hill-1, no. of effective tillers hill-1, no. of non-effective tillers hill-1, no. of spikelets panicle-1 and 1000-grain weight. The panicle length varied from 22.30 to 25.11 cm. The number of leaves on hill-1 varied from 62.00-26.00. The number of effective tillers on hill-1 varied from 12.23-10.24 whereas the number of non-effective tillers on hill-1 varied from 3.10-1.29. The maximum grain yield of 8.96 t ha-1 was obtained from Treatment T10 followed by T6 where Ipil-Ipil of LB with 45% RFD was applied with a grain yield of 8.63 t ha-1. Therefore, this study suggests that the green LB of Ipil-Ipil and Minjiri could be used the improvement of yield contributing characteristics of rice. Bangladesh J. Agri. 2022, 47(2): 133-142

A field experiment was conducted in the Agroforestry Field Laboratory of Bangladesh Agricultural University, Mymensingh during the period from November 2016 to April 2017 to find out the effects of Sadakoroi (Albizia procera), Kalokoroi (Albizia lebbeck) and Akashmoni (Acacia auriculiformis), leaves biomass with different fertilizers dose applications on the yield and yield contributing characters of Chinese Hybrid Rice. There were 10 treatments : T1 = Sadakoroi (leaf biomass 2 kg /plot ) + 15% RFD (Recommended fertilizer dose), T2= Sadakoroi (leaf biomass 2 kg /plot )+ 30% RFD, T3 = Sadakoroi (leaf biomass 2 kg /plot )+ 45% RFD, T4 = Kalokoroi (leaf biomass 2 kg /plot) + 15% RFD, T5 = Kalokoroi (leaf biomass 2 kg /plot) + 30% RFD, T6 = Kalokoroi (leaf biomass 2 kg /plot) + 45% RFD, T7 = Akashmoni (leaf biomass 2 kg /plot) + 15% RFD, T8 = Akashmoni (leaf biomass 2 kg /plot) + 30% RFD, T9 = Akashmoni (leaf biomass 2 kg /plot) + 45% RFD and T10= Control ( 100% RFD). The boro hybrid rice var. SQR6 was used as a test crop. The experiment was conducted in a Randomized Complete Block Design (RCBD) with three replications. The result showed that green leaf biomass had a significant effect on the yield contributing characters. The panicle length varied from 21.0 to 25.5 cm. The number of leaves on hill-1 varied from 40.2-25.9. The number of effective tillers on hill-1 varied from 12.27-10.63. The highest grain yield of 8.87 t ha-1was obtained from treatment T10 followed by 8.77 tha-1 noted with T3 where Sadakoroi leaf biomass was applied. Therefore, this study suggests that the green leaf biomass of Sadakoroi and Kalokoroi can be applied to the improvement of yield and yield contributing characters of rice. Bangladesh J. Agri. 2022, 47(2): 44-52

Agroforestry production systems are underappreciated for their role in meeting the SDGs on poverty, food security, and climate change. In Bangladesh, low-productive agroforestry practices also provide ecosystem services and supply food to more than 22 million poor families. Accordingly, Madhupur Garh’s agroforestry practices are very promising and act as a significant factor in providing several outputs and opportunities for over 50,000 farmers to improve farm productivity, livelihoods, and resource conservation. Therefore, a case study was undertaken to analyze the economical profitability of promising local agroforestry practices and their impacts on the livelihoods of the rural farmers living in Madhupur Garh. This study identified six of the most common potential agroforestry practices in the Madhupur Garh. Among six identified agroforestry practices, the highest gross return and net profit were obtained from the Acacia-Pineapple-Ginger-based agroforestry practice (BCR 2.83). Moreover, these agroforestry models have simultaneously improved participants' social, physical, human, and ecological capital. So, the study argues that these agroforestry models not only provide economic returns but also augment the livelihood capital of the local farmers, thus developing their community as a whole, and this research looks at some of the key aspects of that development. Therefore, it can be concluded that the Acacia-Pineapple-Ginger-based agroforestry program can be the most effective strategy for generating income for the rural people in the study area and have an impact on the local farmers' livelihoods in the Madhupur Garh of Bangladesh.

The experiment was carried out at the Field Laboratory, Department of Environmental Science, Bangladesh Agricultural University, Mymensingh during the period of March, 2012 to July, 2012 to evaluate the effect of fertilizer and manure on the growth and yield of Tulsi and Pudina. There were six treatments consisting of control (No fertilizer and manures), cowdung, poultry manure, cowdung+ NPK fertilizer, poultry manure+ NPK fertilizer and Mixed fertilizer. All the treatment significantly influenced most of the growth and yield components of Tulsi and Pudina. The plant height, No. of branch/plant, No. of leaf/plant, Leaf length, 1000- fresh leaf weight and fresh yield were highest where cowdung was applied. All the above parameters were lowest where no manures were applied (control). From these results it was clear that cowdung was the best for soil quality and growth and yield of Tulsi and Pudina medicinal plant.DOI: http://dx.doi.org/10.3329/jesnr.v7i2.22197 J. Environ. Sci. & Natural Resources, 7(2): 13-16 2014

The study presents an analysis of spatial and structural diversity of Sal ( Shorea robusta ), the dominant species of sal forests in Bangladesh by using a neighbourhood analysis approach. The simple field method permits relatively unskilled persons to collect data. Most of the indices can be calculated in the field and the data analysis is comparatively easy. Therefore, the applicability of the method was tested by using different setting of reference trees compared with the full sampling for each plot in the Madhupur sal forests. The results indicate that a group of one reference tree and its four neighbours can be used efficiently to describe the spatial and structural diversity in homogeneous young forests at low costs and in short time. The indices can be easily interpreted allowing quantitative comparisons between different types of forest stands. Sal can be considered as the dominant and comparatively faster growing species than other associate species.

The prevalence of insect pests was studied on rice BR11 (mukta) as understory crop grown in association with 11 years old selected tree species viz, Akashmoni, Jhau and Albida in the field laboratory of the Department of Agroforestry, Bangladesh Agricultural University (BAU), Mymensingh during the period from July to December, 2003. Among the three species Albida and Jhau possessed the largest canopy and there light penetration rate were high. On the other hand, Akashmoni had the lowest canopy but it penetrated low amount of light. Albida-rice association showed the lowest infestation of major rice insects followed by Jhau-rice association, while Akashmoni-rice association showed the highest insect infestation. Light intensity in the control plot (absent of tree species) was maximum and it caused minimum severity of insects infestation as compared to other associations. From the result it appeared that light interception has the relationship with insect population in rice. Therefore, tree species having sparse canopy which allowed easy penetration of sunlight is suitable for tree-rice agroforestry system.