Dept. of Agroforestry And Environment
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Item EVALUATING ECOSYSTEM SERVICES IN CHAR LAND AGROFORESTRY SYSTEMS(HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR-5200, BANGLADESH, 2023-12) CHAWDHURY, A. T. M JUNAIDUR RAHAMAN; Bari, Prof. Dr. Md. Shafiqul; Rahman, Prof. Dr. Md. ShoaiburAgroforestry systems are believed to offer numerous ecosystem services. Especially in the case of char land agroforestry practices, this is almost absent. Therefore, this research investigated the outcome of four key ecosystem services and environmental advantages of seven char land agroforestry systems (Malta, Mango B, Litchi, Mahogony, Guava, Lombu, and Mango H) as a prologue to the special issues like carbon sequestration, carbon: nitrogen (C: N) ratio, soil nutrient contents, and local field level biodiversity changes. This research has found a significant variation in soil chemical properties by practicing agroforestry. The only decrease in soil properties was found in soil pH and the maximum variation (11.30%) of this parameter occurred in the Lombu-based multistoried agroforestry field. However, overall effective increases were noticed in all other chemical properties of soil. Consequently, Mango (Var. Hariavanga) based agroforestry field gave maximum increase of soil organic carbon, available Potassium, available Phosphorus, available Sulphur, and available Zinc (131.91, 62.50, 73.06, 98.46, 72.58, % respectively). On the other hand, available nitrogen was increased maximum in both varieties (Hariavanga and BARI Am 4) of the Mango field which was 100%. Again, the maximum (15.28%) magnesium was increased in Guava, and the C: N ratio (31.26%) was in Litchi Litchi-based agroforestry field. In the case of soil biological properties, all the parameters were also increased from the initial open field conditions. Maximum increase of soil bacteria, P2 solubilizing bacteria, and fungus were found in the Litchi-based agroforestry system (759.24, 124.38, and 98.48 %, respectively). In the case of N2 fixing bacteria, BARI Am 4 Mango field gave a 100.69 % increase value. For Actinomycetes, a 908% increase was found in the Guava-based agroforestry field. In the context of local field-level biodiversity, the population of flora and fauna has doubled within five years in the Mango-based agroforestry field. This increase, i.e. improvement trend, has been observed in the Mahogany Litchi, Guava, and Lombu-based agroforestry also. Finally, it may be concluded that due to practicing different fruits and forests-based agroforestry systems in char land, a significant amount of four ecosystem services were increased.Item PERFORMANCE OF CHILI INFLUENCED BY FERTILIZER APPLICATIONS UNDER DIFFERENT TREE BASED AGROFORESTRY PRACTICES(HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR., 2020-06) AKTER, IMRUN; Prof. Dr. Md. Shafiqul BariChili is not only most important winter vegetables in Bangladesh but also well-known and high demandable popular vegetables and also important spices grown successfully during brumal season in Bangladesh. Though the aforementioned chili is very common to all and have good potential in our climate, none of them was systematically tested in agroforestry system or in natural shade condition to see their production ability under partial shade conditions. With that in mind a field experiment was carried out at the Agroforestry and Environment Research Farm, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur, during May, 2019 to July, 2019 to evaluate the performance of chili production under litchi, mango and moringa based agroforestry system. The experiment was laid out in two factorial RCBD with 3 (three) replications. Factor A (Production systems) viz. S1 = Litchi + Chili, S2 = Mango + Chili, S3=Moringa + Chili and S4 = Open + Chili and Factor B (Fertilizer applications) viz. F1 = Chemical Fertilizer, F2 = Cowdung, F3 = Poultry manure, F4 = Cowdung + Poultry manure, F5 = No fertilizer. The total numbers of experimental plots were 60. The result of the experiment revealed that plant height (30, 45 and 60 DAT), no. of shoot/plant (30, 45 and 60 DAT), number of leaf/shoot (30, 45 and 60 DAT), leaf length (30, 45 and 60 DAT), leaf width (30, 45 and 60 DAT), fruit length (cm), fruit diameter (cm), number of fruit/ plant, yield (kg/plot), yield (t/ha), percent dry weight of chili fruit were significantly varied due to the different production systems and fertilizer applications when cultivated under litchi, mango and moringa based agroforestry systems. In case of effects of production system, the highest fruit yield (2.47 t/ha) was recorded from the open + chili (S4) production system. On the other hand, lowest fruit yield (1.33 t/ha) was obtained from the mango + chili (S3) based agroforestry system. In case of effects of fertilizer application, the highest fruit yield (3.12 t/ha) was recorded from the plot where chemical fertilizer (F1) was used. On the other hand, lowest fruit yield (0.74 t/ha) was obtained from the plot where no fertilizer (F5) was used. In case of interaction effects of the chili production system and fertilizer applications, the highest yield (4.05 t/ha) was observed from the treatment S4F1 (Open + Chili+ Chemical fertilizer). On the other hand, lowest yield (0.57 t/ha) was observed from the treatment S2F5 (Mango + Chili+ No fertilizer). Again, from the economic analysis, the highest benefit-cost ratio (3.03) was recorded from the treatment Moringa + Chili + Chemical fertilizer (S3F1). On the other hand, the lowest benefit-cost ratio (1.67) was observed in those plots where chili was grown with cowdung and poultry manure under open condition (i.e. in treatment S4F2 and S4F3, respectively). From this study it is clear that chili cultivation in association with moringa tree gave the best yield among production system with maximum BCR (Benefit Cost Ratio).