The experiment was conducted at Regional Agricultural Research Station (RARS), Jamalpur, Bangladesh during the period of 2019-2020 and 2020-2021 to investigate the effect of vermiwash on growth, yield and quality of brinjal and to find out suitable foliar dose of vermiwash for optimizing the yield of brinjal. There were five treatments comprising T1= Chemical fertilizer (CF) + foliar spray of distilled water (control), T2 = CF + foliar spray of 10% vermiwash, T3 = CF + foliar spray of 20% vermiwash, T4 = CF + foliar spray of 30% vermiwash and T5= CF + foliar spray of 40% vermiwash. Results revealed that, vermiwash treated brinjal plants showed better growth and yield parameters than the control plants. The highest average brinjal fruit yield (29.99 t ha-1) was found in T3 treatment i.e., foliar spray of 20% concentration of vermiwash and the lowest (26.35 t ha-1) came from control. On the other hand, nutritional quality (moisture content, TSS, β carotene and nutrient content) were seen to be higher in vermiwash treated treatment compared to control treatment. The study suggests that, 20% concentration of vermiwash could be used as effective foliar spray for eco-friendly and higher yield of brinjal.

A field experiment was conducted to find out the spacing of potato-brinjal intercropping system and land utilization and economic return at the Regional Agricultural Research Station, Jamalpur during rabi 2017-2018. The experiment was laid out in randomized complete block design (RCBD) with three (3) replications and six treatments. Cultivation of potato with brinjal at potato (60 cm × 25 cm) + brinjal (120 cm × 75 cm), Potato (50 cm × 20 cm) + Brinjal (100 cm × 70 cm), Potato (50 cm × 20 cm) + Brinjal (100 cm × 75 cm) might be agronomically feasible and economically profitable for potato and brinjal intercropping system as compared to sole treatment. Potato (50 cm × 20 cm) + Brinjal (100 cm × 70 cm) best performed in gross return, gross margin and potato equivalent yield (PEY 49.14 tha-1) compared with the other treatments. The total yield of intercropped crops was greater than sole cropping, shown by LER>1. The overall advantage of intercropping ranged from 73 to 92%. The highest land equivalent value of 92% was recorded for Potato (50 cm × 20 cm) + Brinjal (100 cm × 70 cm) arrangements indicated a yield advantage of 92% over sole crop. Viable agronomic option in increasing land use efficiency and increased food security. It is, therefore, imperative to demonstrate the best treatment under farmer's condition.

An experiment was conducted at the farmers’ fields of Naovangar char, Bolaier char and Laxmir char under Jamalpur and Sherpur region, Bangladesh. This experiment was also conducted at Regional Agricultural Research Station (RARS), Jamalpur, Bangladesh during the winter season of 2018-2019, 2019-2020 and 2020-2021.The objectives were to evaluate the performance of radish, sweet gourd and mustard leaf cultivation under mango fruit tree based agroforestry system, to increase the production of vegetables by using the fallow land under mango garden and to increase income of the farmers in char areas of Jamalpur and Sherpur. The experiment was laid out in Randomized Complete Block design (RCBD) with 3 replications. Three years experimental results revealed that, at Naovangar char, the highest radish equivalent yield (30.66 t ha-1), gross return (Tk.306600 ha-1), net return (Tk.225600 ha-1) and BCR (3.7) were found from radish cultivation followed by sweet gourd and the lowest from mustard leaf cultivation (17.22 t ha-1, Tk, 172200 ha-1, Tk. 101200 ha-1 and 2.4 respectively). At Bolaier char, the highest radish equivalent yield (30.33 t ha-1), gross return (Tk.303300 ha-1), net return (Tk.219800 ha-1) and BCR (3.6) were found from radish cultivation followed by sweet gourd and the lowest from mustard leaf (17.88 t ha-1, Tk, 178800 ha-1, Tk.106800 ha-1 and 2.4 respectively).At Laxmir char, the highest gross return, net return and BCR also followed the same trend. At RARS, Jamalpur, vegetables production under agroforestry system also followed same pattern. Radish cultivation exhibited remarkably higher radish equivalent yield (32.74 t ha-1), higher gross return (Tk 327400 ha-1), net return (Tk 238400 ha-1) and BCR (3.6). The mustard leaf cultivation recorded the poorest performance regarding the said parameters. Prior to considering the obtained results from the study, it can be concluded that radish cultivation under agroforestry systems are more profitable than other winter vegetables cultivation. So, vegetables radish cultivation under mango fruit tree based agroforestry system might be encouraged in Jamalpur and Sherpur region in Bangladesh.

An experiment was conducted at Biratnagar, Nepal in completely randomized block design to study the effect of effective microorganisms (EM) and indeginous microorganisms (IMO) along with recommended dose of fertilizers (RDF) on the growth and yield parameters of okra (variety: Arka Anamika). The 6 treatments viz. control, EM enriched manure, IMO enriched manure, RDF, RDF+EM, RDF+IMO and control were replicated thrice. The study showed that indeginous microorganisms when incorporated with recommended dose of NPK fertilizer (RDF+IMO) can produce best result in terms of yield and economic return. Rigorous study in multi location and more crops is suggested to develop an integrated nutrient management plan and household waste management.

during the period of 2018-19 and 2019-2020 to find out suitable phosphorus fertilizer source and application method for higher brinjal production and to increase phosphorus use efficiency. There were six treatments comprising T1 = P from TSP (100% basal dose), T2 = P from DAP (100% basal dose), T3 = P from DAP (50 % basal + 50% top dress), T4= P from DAP (25 % basal + 75 % top dress), T5 = P from DAP (100 % top dress) and T6 = P-control. NKSZnB were used as a blanket dose in all treatment. Two years results revealed that, DAP fertilizer gave superior performance over TSP fertilizer. The highest average brinjal fruit yield (33.13 t ha -1 ) was found in T3 treatment [DAP application (50 % basal + 50% top dress)] compared to TSP treatment (30.05 t ha -1 ) and the lowest (17.97 t ha -1 ) came from T6 (control treatment). The highest phosphorus use efficiency (433.14 Kg yield/Kg P) and highest phosphorus recovery (28.75%) was also obtained from DAP treatment with highest BCR (3.6) compared to TSP treatment. It was conclude that, splitting application of DAP fertilizer led to an increased of P availability at proper time of demand which effects on growth and yield of brinjal.