Dept. of Agroforestry And Environment

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    PERFORMANCE OF GARLIC AND POTATO UNDER GUAVA BASED AGROFORESTRY SYSTEMS IN CHAR LAND OF TISTA RIVER BASIN
    (HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR., 2019-06) SHOMA, ATIKA PARVIN
    Two experiments were carried out at the charland of Kaunia upazila under Rangpur district, during November 2018 to March 2019 to observe the performance of garlic and potato under guava based agroforestry systems. The experiments were laid out with single factor Randomized Complete Block Design (RCBD) following three replications for garlic and four replications for potato. The treatments for garlic experiments were five distances from the tree base i.e. T1 (50 cm distance from tree base), T2 (80 cm distance from tree base), T3 (110 cm distance from tree base), T4 (140 cm distance from tree base) and T5 (170 cm distance from tree base). Whereas the treatments for potato experiments were three fertilizer and manure application. i.e. F0 (no fertilizer), F1 (only cowdung @ 10 t/ha) and F2 (only chemical fertilizer). The total number of experimental plots of garlic were15 and the size of each garlic plot was (1m×1m) = 1 m2 . On the other hand, the total number of experimental plots of potato were12 and the size of each potato plot was (2m×2m) = 4 m2 . The result of the garlic experiment revealed that the different distance from tree base had significantly effect on the growth and yield of garlic under guava based agroforestry systems. Except plant height rest of all the growth parameter like number of leaves, leaf length, leaf breadth, size of garlic, weight of garlic, number of cloves/garlic were varied significantly. Yield of garlic was also varied significantly and the highest yield (7.40 t/ha) was recorded at open condition and the lowest yield (5.46 t/ha) was recorded in closest distance from tree base. i.e. treatment (T1). In case of potato experiment, it was also found that different fertilizer applications had the significantly effect on the growth and yield of potato. However, chemical fertilizer gave the best yield (10.31 t/ha) where no fertilizer gave low yield (7.17 t/ha). Again, cowdung gave the medium yield (9.88 t/ha) which was 4.17% less as compared to chemical fertilizer. From the economic analysis, it was observed that the higher BCR (3.59) was recorded in garlic cultivation at the floor of guava tree from 140 cm distance of tree base. On the other hand, the lower BCR (2.77) was recorded from 170 cm distance from tree base (open control). In case of potato cultivation in agroforestry system the higher BCR (2.07) was recorded where cowdung was applied and the lower BCR (1.81) was recorded where no fertilizer was applied. Finally, it may be concluded that garlic and potato can be cultivated successfully under newly established guava based agroforestry systems at the char land considering the additional returns as per investment in terms of money and time
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    VARIETAL PERFORMANCE OF OKRA UNDER LITCHI BASED AGROFORESTRY SYSTEMS
    (HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR., 2015-06) NURUZZAMAN, MD.; Prof. Dr. Md. Shafiqul Bari
    A field experiment was conducted at the Agroforestry and Environment Research Farm, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur, during April to July 2014 to evaluate the varietal performance of okra cv. Hybrid, BARI dheros-3 and local variety under litchi based agroforestry systems along with sole cropping i.e. open field condition. The experiment was laid out in two factors randomized complete block design (RCBD) with three replications. The treatments were factor A: two production system viz. T1 (litchi + okra) and T2 (okra sole cropping). On the other hand factor B was 3 okra varieties viz. V1 (okra hybrid variety), V2 (BARI dheros-3) and V3 (okra local variety). So the treatment combinations were: T1 V1, T1 V2, T1 V3, T2 V1, T2 V2 and T2 V3. The Experimental results revealed that litchi based agroforestry system with three different variety were found to significant on growth and yield of okra. Significantly the highest number of fruit plant-1 (7.24), longest fruit length (12.73 cm) and fruit girth (6.71 cm) were found in okra sole cropping production system and the lowest number of fruit plant-1 (6.01), shortest fruit length (12.18 cm) and fruit girth (6.28 cm) was found in litchi + okra based agroforestry system. Significantly, the highest okra fruit yield (10.01 t ha-1) was found in okra hybrid variety and the lowest fruit yield (8.31 t ha-1) was observed in okra local variety, respectively. Moreover, The highest fruit weight plant-1 (157.70 g) was recorded in open + okra, hybrid variety treatment combination and lowest fruit weight plant-1 (99.00 g) was recorded in litchi + okra, local variety (T1V3) treatment combination. Significantly, the highest yield (10.28 tha-1) was found in open + okra, hybrid variety (T2V1) treatment combination. On the other hand the lowest yield (7.73 tha-1) was recorded in litchi + okra, local variety (T1V3) treatment combination, respectively. Finally it will be concluded that okra hybrid variety performed superior in sole cropping as well as in the floor of litchi orchard.