M. R. Moktan et alinfrastructures comprised RNR (Renewable Natural Resource)extension centre, two rural clinics, one basic health unit, primaryschool and irrigation channel and ten rural water and sanitationschemes.Land use type constitutes wetland (12 ha) dry land (88 ha) tseri (760ha), mixed agriculture partly wetland and dry land (738 ha ) <strong>natural</strong>pastures (454 ha) and forest types; broadleaf (16,960 ha) broadleafwith conifers (59ha) and scrub forest (11 ha) (MoA, 2002). Othersinclude; rocky outcrops (149 ha) water spreads (312 ha) andsettlements (7 ha). Economy is subsistence-oriented and depends onagriculture and livestock.Bjoka receives a total rainfall <strong>of</strong> 1503 mm/yr with a highest <strong>of</strong> 442mmin July and lowest <strong>of</strong> 10mm in January (Fig.1). The rainfall distributionpattern is skewed with most rainfalls occurring between the summermonths <strong>of</strong> April to September crucial for new growth and regeneration<strong>of</strong> vegetation including bamboo and canes.500Rainfall in mm4003002001000Jan Feb Mar Apr May June July Aug Sept Oct Nov DecFigure 1:Annual rainfall in BjokaBjoka falls in the warm broadleaf vegetation zone ( Table 1) and it ischaracterised by dominance <strong>of</strong> principal tree species such as Altingiaexcelsa, Betula alnoides , Castanopsis indica, Engelhardtia spicata,Maesia spp, Ostodes paniculata and Macaranga pustulata. Variousbamboo and cane species abound the forests along the moist shadycreeks and streams.41
Bamboo and Cane: Potential.............Table 1. Characteristics species <strong>of</strong> the warm broad leaf vegetation zone <strong>of</strong> BhutanForesttypeWarmBroadleaf ForestCharacteristic genera and speciesAlangium chinense, Alnus nepalensis, Altingia excelsa, Betulaalnoides, Bisch<strong>of</strong>ia javanica, Callicarpa arborea, Castanopsisindica, Cordia obliqua, Dendrocalamus hookeri, Dichroafebrifuga, Engelhardtia spicata, Entada pursaetha, Euodiafraxinifolia, Firmiana colorata, Helicia nilagrica, Lithocarpuselegans, L. pachyphyllus, L. fenestratus, L. dealbatus, L. listeri,Macaranga pustulata, Maclura cochinchinensis, Maesia spp.,Mussaenda roxburghii, Ostodes paniculata, Pouzolzia sanguinea,Rhaphidophora eximea, Schima wallichii, Stereospermumpersonatum, Trevesia palmata, Wendlandia puberulaSource: Grierson and Long (1984)Bamboos and canes-distribution and characteristics(a) Bamboo ( Neomicrocalamus andropogonifolius )Out <strong>of</strong> thirty bamboo species recorded in Bhutan, twenty-one speciesare found growing in the lower, middle and upper Kheng underZhemgang (Stapleton, 1994d). Out <strong>of</strong> the twenty-one species, elevenwere recorded in Lower and Middle Kheng. Neomicrocalamusandropogonifolius (Griffith) Stapleton locally named Yula inKhengkha, Ringshu in Dzongkha and Sharchopkha and Langma inLhotshamkha is the commercially important bamboo <strong>of</strong> lower Kheng.Stapleton (1994) describes distribution <strong>of</strong> N. andropogonifolius as<strong>of</strong>ten scrambling from sub-tropical to warm temperate areas restrictingto the wetter eastern forests <strong>of</strong> Bhutan especially around 1,600-1,800mfound in conjunction with Ceplalostachyum latifolum andChimonobambusa callosa. N. andropogonifolius grows <strong>of</strong>ten in denseclumps but in limited localities characterized by highly fertile soils andabundant precipitation. These soils are deep brown with sandy clayeyto clayey loam texture. N. andropogonifolius is a climber that requiresthe shade and support <strong>of</strong> trees. Its association is broadleaf associate treespecies including Syzizium, Litsea, Ostodes paniculata, Myria42
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Pema Wangda & Masahiko OhsawaSPECIE
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Field Crops
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Wangda Dukpaweak coleoptiles, which
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Rht 10 9.00 4.67 90 11.27 8.57 19.8
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depths. Interactions between variet
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Bhu.J.RNR.Vol 3.No.1, 102-118: 2007
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Growing Rice in Bumthang.......Temp
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d thTransplantation should be carri
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RESULTSAND DISCUSSIONNursery raisin
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VarietyDays tomaturityGrowing Rice
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Growing Rice in Bumthang.......tota
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Physiological/nutrient disordersYel
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T. B. Katwal et alfollowed by rice
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T. B. Katwal et alnot very large as
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T. B. Katwal et alquantity of seedl
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The results from the two sites indi
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Bhu.J.RNR.Vol 3.No.1, 128-142: 2007
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MATERIALSAND METHODSThis research o
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allocation of Farm Yard Manure(FYM)
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infrastructure developments.Encoura
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Encouraging farmers to re cultivate
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Encouraging farmers to re cultivate
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Encouraging farmers to re cultivate
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Bhu.J.RNR.Vol 3.No.1, 143-148: 2007
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Inadequate outstanding cultivar (mo
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General
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Tirtha Bdr Katwal et alresearch. Th
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evaluating new technologies assumin
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Tirtha Bdr Katwal et ali. Trainings
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Tirtha Bdr Katwal et alfrom improve
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Table 2. Rice Production before and
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Guide to AuthorsStandard Structure
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C. TABLES:Tables are used to presen
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6. Standard Book :National Research