Rapid multiplication technique can be used to produce large quantities of cassava stems as planting materials for subsequent seasons. 0000001416 00000 n widespread use by farmers of the improved cassava varieties is the lack of planting material, in larger quantities, at the right moment and with the desired quality characteristics. Material and methods 2.1. Scientists working on cassava breeding are now using the Semi-Autotrophic Hydroponics (SAH) technology to rev up the propagation of clean cassava planting materials. Results from experiments comparing … This affects storage quality, root and shoot formation and development. The main seed-borne pathogens and pests of seed tubers are soft rots, dry rots, nematodes and beetles. Theoretically, long cuttings with more than 10 nodes have a better chance of conserving their viability because of the greater number of buds. You use fresh, white Cassava from the garden and you boil these roots for 20 minutes. The most interesting fact about cassava is that it can even grow in nutrient deficient soils. 0000004110 00000 n Manihot esculenta Crantz, in vitro micropropagation, nodal propagation: DOI: 10.17660/ActaHortic.2017.1179.52: Abstract: Cassava is increasingly used by manufacturing industries for food and non-food uses. This is because long cuttings have more buried nodes than the short ones and thus produce more stems and leaves, which results in higher yields. Although farmers may not deliberately conserve cassava genetic resources, they do so through traditional practices that ensure on-farm retention of varieties over years. H��VmO�H��_��J��"U�Ґ�B�{�$���8$���)�~���u 9(���w��y�ٽ�43�8�T Receive FREE updates on agriculture. The use of SAH involves the use of modified soil which can hold plant roots in planting pots with little water. There are few techniques like serological and molecular methods are used to identify the virus in laboratory but have their limitations. Cuttings of cassava cv. Scientists who are working on cassava breeding are now using the Semi- Autotrophic Hydroponics (SAH) technology to boost the propagation of clean planting materials. They have poor nutrient reserves and it is because the shoots which develop from such stems are weak and only a few, small tuberous roots are produced. Today, CIAT… Long cuttings give higher yields than short ones. Both wild relatives and traditional cultivars, or landraces, developed by farmers over centuries are the primary sources of genes and gene combinations for new varieties. Planting materials: Use only healthy and disease free cuttings for planting. A method is presented for the rapid in vitro propagation of cassava (Manihot esculenta Crantz).Nodal explants were induced to grow as multiple-shoot cultures on a medium containing 1.0 μM 6-benzylamino purine (BAP), supplemented with 0.25 μM α-naphthaleneacetic acid (NAA). You may apply fungicide treatment as a protectant when applying insecticide to control the insect pests found on the cuttings. Read also: Detailed Guide to Good Cassava Cultivation. Select and use improved, healthy, and pest/disease free cassava … However, in a commercial cassava multiplication, you should not use thin stems. 59 0 obj <> endobj In the forest zone, farmers plant between April and May, or in August, whiles, … Read also: Improved Cassava Varieties in Ghana and Their Characteristics. This crop can be cultivated, almost in all kinds of soils. Soil problems are a major cause of low production levels in many cropping ventures. Tissue Cultured Planting Material Tissue cultured cassava planting material at the in vitro multiplication stage Tissue culture cassava plantlets hardened and ready for planting Plantlets generated by the tissue culture method will provide a large quantity of clean (i.e. There are three methods of planting cassava. 2. Use sharp cutlass to cut the stem into 20cm-25cm long pieces with 5-7 nodes. ... although many farmers in Uganda still use FS planting materials. Examine planting material carefully to prevent transmission of diseases and pests. This is one of the beauties of vegetatively propagated crops. The use of biotechnology-based methods for rapid multiplication of improved varieties is one of the strategies that is helping to solve this limitation. Scientists working on cassava breeding are now using the Semi-Autotrophic Hydroponics (SAH) technology to rev up the propagation of clean cassava planting materials. 0000007719 00000 n The SAH involves the use of modified soil which holds plant roots in planting pots with little water. These cuttings are selected from the leafless woody portion of the stem of plants normally older than nine months. Production of cassava planting material. Stem cuttings, 15-30 cm in length, are used as planting material to establish commercial crops of cassava. It is very convenient to use vegetative material from a previous crop to plant a new one. It makes further complicated if both cassava brown streak and cassava mosaic diseases occur together. Cassava or tapioca is a rich source of carbohydrate and widely used as an alternate food source. 80 0 obj <>stream %PDF-1.6 %���� Soil Requirement for Cassava Farming. Cassava local varieties were also listed using the ethnic names. The nodes of the cassava stem cuttings are where the shoots develop and if you bury them, the roots. propagation of cassava planting materials, molecular techniques such as PCR should be used in testing elite cassava materials for propagation. Abstract. Get this from a library! You can use any part of the cassava stem as propagating material. Spread of most of these pathogens and pests is through vegetative planting material, either seed tubers or cut tuber setts. Cassava in Tropical Africa, A Reference Manual – (IITA). 59 22 You should obtain your planting materials as close as possible to planting time. Such cuttings make it easy for mechanization, transportation and handling of large quantities of planting material. h�b```"yV&af`a`b�& �C�}��7�*M�OD b�n����ҬbR Qj*�9�F������U. Horizontal method of planting cassava; Vertical method of planting cassava; The inclined method of planting cassava; Horizontal planting. Ancient civilizations have been cultivating cassava or yuca for its starchy and nutritional roots. 0000012096 00000 n 0000000016 00000 n If you can get those right then you are on your... Okra production is a very profitable farming business, especially during the periods of low rainfall. Scientists working on cassava breeding are now using the Semi-Autotrophic Hydroponics (SAH) technology to rev up the propagation of clean cassava planting materials. Cassava is now used to make flour for bread production and other fast foods, aside from the normal products derived from cassava like the flakes, pasta, etc. • Dip planting materials in insecticide before planting to reduce infestation. If you continue to use this site we will assume that you are happy with it. The SAH involves the use of modified soil which holds plant roots in planting pots with little water. • Use clean or uninfested planting materials. Protocol for tissue culture techniques for rapid multiplication and procedure for micropropagation of planting materials Facilities created under the NATP at CTCRI A low cost shed of 20 x 8 m for storage of planting materials Micro-propagation lab for mass multiplication of in vitro plants \��V�0�$@[��h��_�'�'�h��_��$j�S�mg�G�����kOv�&�����a����/_��It��=R. ]�*c��7_�4:X�2:�M�;��4I��O�%�`�#��iVf�R &�,�,�,,̇Xt��Z��^�xT�T����� �!��6�,� V�ek��m����Aj� Ʒ3� <]/Prev 935496>> However, the longer the cuttings, the much more propagating material per unit of surface area is required. This is not common practice among cassava farmers but it is highly recommended. Select planting material from healthy plants. xref 0000004239 00000 n Cassava stems for future crop. Vertical or angular planting is recommended in areas of high rainfall Horizontal planting is better in dry areas. Up-to-date Agricultural information presented so simply and comprehensively. 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