Jackfruit extension manual.pdf - Crops for the Future

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3. WHERE TO GROW JACKFRUIT TREES 3.1 Climatic requirements for cultivation Jackfruit can grow from sea level to 1600 m elevation. However, fruit quality is better at lower elevation. • Jackfruit is well adapted to hot, humid tropics and a humid subtropical climate. Temperatures ranging between 16 to 28°C are considered good for its growth. However, optimum growth and production occurs in continuously warm areas. • Jackfruit cannot tolerate freezing temperature. It requires watering during long dry periods for optimum growth and production. The climatic requirements for cultivation of jackfruit are summarized in Table 2. Table 2. Climatic requirements for jackfruit Climatic factor Minimum Maximum Altitude (m) Annual rainfall (mm) Mean annual temperature (°C) Sea level 1000 16 1600 2400 28 3.2 Site requirements See Technical Note 5b in Part II. Jackfruit grows in a wide variety of conditions. • Soil. Jackfruit can grow on a wide variety of soil, but grows best on deep alluvial soil. Soil drainage is very important. It cannot tolerate waterlogged conditions. The tree may die in 2–3 days in flooded soil conditions. The general physical soil requirements of the jackfruit tree are shown in Table 3. • Light. The tree grows well in full light. Table 3. Suitable habitats for jackfruit Soil type (texture) Topography Rooting depth Drainage Characteristics 5 Suitable habitats Deep alluvial, sandy loam, clay loam, calcareous, lateritic Plains to highland, up to 30° slopes observed 25 cm deep, 2.25 m in spread Well drained Soil pH 5.0–7.5
3.3 Land-use systems • Jackfruit can be grown in homesteads, community places, by the roadside and in orchard plantations. • Forest land. In certain countries it is still abundant in forests. In Sri Lanka it is protected from felling for the conservation of the tree. • Jackfruit fits well in agroforestry systems. Jackfruit tree is interplanted with annual crops such as vegetables, pineapple and spices, and also with other perennial species such as coconut, cocoa, pepper, etc., in household and secondary agroforestry systems. • Boundary tree. Used to maintain the boundaries of land (Hocking 1996) by planting on dykes created between fields. • A component of both village forests and home gardens, jackfruit trees form part of the middle layer of the upper canopy along with other fruit trees. 6
Page 1 and 2: Practical Manual No. 10 Jackfruit A
Page 3 and 4: CONTENTS PREFACE...................
Page 5 and 6: PREFACE Fruits for the Future is a
Page 7 and 8: 2. WHY GROW JACKFRUIT TREES? The ja
Page 9: o Ripe fruits can be used as a laxa
Page 13 and 14: • It grows taller and thus produc
Page 15 and 16: 5.2.2 Grafting • Grafting can be
Page 17 and 18: 5.3.2 Timing of planting • The be
Page 19 and 20: Table 5. Yearly doses of manure and
Page 21 and 22: 6. HARVESTING 6.1 Ripeness and yiel
Page 23 and 24: Ripening • Prior to pre- or minim
Page 25 and 26: 8.2 Pricing Some examples are given
Page 27 and 28: APPENDIX 1. MULTIPLE USES OF THE JA
Page 29 and 30: APPENDIX 3. HEALTH AND SAFETY WHEN
Page 31 and 32: Symbiosis Tissue culture Topography
Page 33 and 34: Why Grow the Jackfruit Tree? Jackfr
Page 35 and 36: How to Grow the Jackfruit Tree 1. C
Page 37 and 38: How to Grow the Jackfruit Tree - Gr
Page 39 and 40: How to Grow the Jackfruit Tree - Ve
Page 41 and 42: How to Grow the Jackfruit Tree - Ep
Page 43 and 44: How to Grow the Jackfruit Tree - Fi
Page 45 and 46: How to Grow the Jackfruit Tree 4. M
Page 47 and 48: Post-harvest Handling and Processin

Jackfruit extension manual.pdf - Crops for the Future

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