Plants Cassava cultivation techniques

1. Use good cassava varieties cassava yield and high yield pulp.
      The common varieties in Vietnam is KM94. KM140, KM98-5, KM98-1, SM937-26, with the corresponding ratio 75.54%, 5.4%, 4.50%, 3.24%, 2.70%, of the total area of cassava collection existing national arrangements Convention 496.20 thousand ha, the average yield of 17.1 tonnes / ha, yield 8.52 million tons of fresh cassava roots (GSO 2012)
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        Recently, Vietnam Cassava Programme (VNCP) is testing new cassava varieties broad prospects. In the southern provinces, good varieties are typical farmers growing acceptance and wide in production is KM419, KM440, KM414, KM397, KM325. Especially like KM419 (cassava flour Agroforestry super, super high yielding cassava Forestry, cassava, cassava quail dwarf) is growing very fast. These new varieties have the advantage of high productivity, low compact plant is easy to grow thicker, shorter days, less disease, farmers have purchased seed sharp transitions, less area KM94 main varieties of high yield stability, many high tree canopy powder but difficult to grow thick broad, long days and infected shoots dragon.

1.1 The origin and characteristics of seven new varieties prospects.

Cassava KM419

Origins: KM419 is the offspring of hybrid combinations BKA900 x (KM98-5 x KM98-5) from Ho Chi Minh City University of Agriculture and Forestry recruitment and referral. BKA900 the elite varieties imported from Braxil have the advantage of fresh tuber yield very high but the quality is not very good seedlings, hardly keep seed for next season. KM98-5 is good cassava varieties were Dong Nai and Tay Ninh allow production expansion in 2002, 2005 and the Ministry of Agriculture and Rural Development recognized breed in 2009 (Tran Cong Khanh, Hoang Kim et al, 2002 , 2005, 2007, 2009). Hybrid varieties KM419 combines many good characteristics of parents, leading the most productive laboratory (Hoang Kim, Nguyen Van Bo et al., 2011)

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Features like: KM419 green body, straight, picked up his eyes, not branching, older leaves dark green, purple bud, tuber uniformity, tuber shape beautiful, white tuber flesh, less infested fresh tuber yield 40, 2 to 54 tons / ha. Starch content from 28.2 -29% achieved ..

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          Cassava farmers KM419 is currently very popular, fast in production workers in Ninh Thuan, Dong Nai, Tay Ninh, Binh Phuoc, ... and Cambodia, with the name: Cassava flour like super KM419; Super high wheat production Agroforestry, Noodles "dwarf quails' Agriculture and Forestry (to distinguish it from common varieties KM94 = KU50 = MKUC 29-77-3 as" high quail "violet flame, tall, bent at the base, hardly increased current density and dragons infected buds.
 
Cassava KM414
          Origins: KM414 is the offspring of combinations KM146-7-2 x KM143-8-1, is a dual hybrid combinations (KM98-5 x KM98 -5) x (KM98-1 x KM98-1) by team Cassava at Ho Chi Minh City University of Agriculture and Forestry (NLU) and Institute of Agricultural Science for Southern (IAS) choose to create and test 2003 (Golden et al, 2009). Two varieties KM98-5 KM98-1 and the Ministry of Agriculture and Rural Development recognized varieties respectively 1999 and 2009 (Golden et al, 1999; Tran Cong Khanh et al, 2005). KM414 hybrid varieties are more characteristic combination of two varieties you KM98-1 and KM98-5 parents.
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           Features like: Friendly gray KM414 white, high branching, leafy, green tops, tubers form undesirable by like KM419, tubers white, suitable for dry chips and flour. Fresh tuber yield was 42.3 to 52.3 tons / ha; starch content was 27.8 to 29.5%.
 
Cassava KM397
           Origins: KM397 is the offspring of KM108-9-1 x KM219 is a dual hybrid combinations (SM937-26 x SM937-26) x (BKA900 x BKA900) by a team at the University of Agriculture and Forestry cassava City Ming (NLU) and Institute of Agricultural Science for Southern (IAS) choose to create and test 2003 (Golden et al 2009). Just SM937-6 was the Ministry of Agriculture and Rural Development in 1995 recognized breed (Tran Ngoc Quyen et al, 1995). BKA900 the elite varieties imported from Braxil have the advantage of fresh tuber yield very high but the quality is not very good seedlings, hardly keep seed for next season. KM397 combines many characteristics of second quarter and BKA900 SM937-26 same parents.

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        Features like: KM397 Friendly purple brown, straight, picked up his eyes, not division; Dark green leaves, green tops and roots evenly, beautiful form of tubers, tubers white meat, sliced dried appropriately and make dough. Harvesting period 8-10 months after planting, fresh tuber yield from 33.0 to 45.0 tons / ha, starch content from 27.5 to 29.6%, the proportion of dry chips from 42.5 to 44, 3%, starch yield 9,2- 13.5 tonnes / ha, cassava yield from 13.8 to 17.6 tons / ha. harvest index from 60 to 63.0%. Cassava KM397 droughts, very few insect pests, keep meal time equivalent KM94.