DECENTRALIZED ON-FARM SEED POTATO PRODUCTION FROM PRE-BASIC MINITUBERS: A CASE STUDY FROM NEPAL

1998 ◽  
Vol 34 (4) ◽  
pp. 487-495 ◽  
Author(s):  
S. SCHULZ ◽  
G. J. WELLS ◽  
B. K. BANIYA ◽  
T. P. BARAKOTI ◽  
G. KHAREL ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Seed Potato ◽  
Potato Production ◽  
Small Scale ◽  
Seed Potato Production ◽  
Southern Plains ◽  
Small Scale Farmers ◽  
On Farm ◽  
Basic Seed

The on-farm performance of more than 150 000 pre-basic potato (Solanum tuberosum) minitubers of 1–10 g was monitored over two years in contrasting environments in Nepal. Average minituber productivity (grams of basic seed produced per minituber planted) was 171 g in the southern plains and 116 g in the hills. Although the performance of minitubers varied between environments, minituber sizes and potato varieties, the overall results clearly indicated that minitubers can be successfully multiplied by small-scale farmers. This technology therefore allows for the highly decentralized production of basic seed which, in turn, will reduce farmers' dependence on an unreliable and costly supply of bulky conventional seed.

scholarly journals Aeroponics and Sand Hydroponics: Alternative Technologies for Pre-Basic Seed Potato Production in Ethiopia

2018 ◽  
Vol 3 (1) ◽  
pp. 444-450 ◽  
Author(s):  
Lemma Tessema ◽  
Zebenay Dagne
Keyword(s):  
Seed Potato ◽  
Seed Quality ◽  
Potato Production ◽  
Small Scale ◽  
Human Consumption ◽  
Multiplication Rate ◽  
Potato Yields ◽  
Small Scale Farmers ◽  
High Quality Seed ◽  
Basic Seed

Abstract Potato is the third most important food crop worldwide after rice and wheat in terms of human consumption, and global production exceeds 374 million metric tons. Despite this immense importance, potato yields from small-scale farmers in most developing countries including Ethiopia fall far below their capacity, mainly because of insufficient access to high quality seed and limited knowledge on crop husbandry. Moreover, 98.7% of the seed being used come from the informal seed system which lacks appropriate phytosanitary schemes. Frequent seed degeneration nature and low multiplication rate of the crop also provoked less productivity of potato. Hence, technological improvements are necessary for increasing potato productivity and decreasing different bottlenecks of the crop. Aeroponics, sand hydroponics and tissue culture based seed multiplication techniques are currently accelerating the supply of disease free seed potato to the country. Thus, to take advantage of the yield capability of potato by improving the maximum production determinant elements like seed quality, these alternative pre-basic seed potato multiplication technologies could be duly verified and used as an option to boost the yield of potato.

scholarly journals Disease-free Pre-Basic Seed Potato Production through Tissue Culture in Nepal

2014 ◽  
Vol 8 ◽  
pp. 7-13
Author(s):  
Binesh M. Sakha ◽  
Gyan P. Rai ◽  
Shambhu P. Dhital ◽  
Ram B. Nepal
Keyword(s):  
Seed Potato ◽  
Potato Production ◽  
Potato Research ◽  
Seed Potato Production ◽  
National Potato ◽  
Potato Plantlets ◽  
Disease Free ◽  
Screen House ◽  
Basic Seed

Pre-basic seed potatoes are disease free potato minitubers produced by transplanting pathogen free in vitro potato plantlets under protected condition in aphid-proof glasshouse  and/or screen house. Double antibody sand witched - enzyme linked immuno-sorbant assay  is used to test six major potato viruses, namely PLRV, PVS, PVX, PVY, PVA and PVM.  Thermotherapy cum meristem tip excision techniques are used to eliminate these viruses.  Virus free in vitro potato plantlets are rapidly propagated by single nodal cuttings on  modified MS media. For pre-basic seed production disease free in vitro potato plantlets are  transplanted in the sterile sand soil substrate under glasshouse and screen house, once in  autumn season and next in spring season. Since 1990, National Potato Research Program has  been producing about 200,000 pre-basic seeds annually. So far, PBS of 19 different  recommended and released potato cultivars has been produced. Till date 3,465,799 PBS had  been produced and 3,217,666 pre-basic seeds distributed to the different seed potato growers  groups, District Agriculture Development Offices, government farms/research stations, and  NGOs/INGOs for subsequent basic seed potato production. After establishment of tissue  culture facilities in National Potato Research Program, the productivity of potato has been  increased by 71% due to utilization of pre-basic seed potatoes.Nepal Agric. Res. J. Vol. 8, 2007, pp. 7-13DOI: http://dx.doi.org/10.3126/narj.v8i0.11564  

Methods of pre-basic seed potato production with special reference to aeroponics—A review

2016 ◽  
Vol 204 ◽  
pp. 79-87 ◽  
Author(s):  
Tanuja Buckseth ◽  
A.K. Sharma ◽  
K.K. Pandey ◽  
B.P. Singh ◽  
R. Muthuraj
Keyword(s):  
Special Reference ◽  
Seed Potato ◽  
Potato Production ◽  
Seed Potato Production ◽  
Basic Seed

scholarly journals Effects of plant growth regulators on growth and yield of pre-basic seed potato production under glasshouse condition

2017 ◽  
Vol 15 (1) ◽  
pp. 149-160 ◽  
Author(s):  
P Bhattarai
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Plant Growth Regulators ◽  
Seed Potato ◽  
Growth Regulators ◽  
Potato Production ◽  
Growth And Yield ◽  
Seed Potato Production ◽  
Chlormequat Chloride ◽  
Basic Seed

A glasshouse experiment was carried out to study the effect of Plant Growth Regulators (PGRs) on the production of pre-basic seed (PBS) potatoes, cv. Janakdev at Khumaltar, (1360 masl) Lalitpur, Nepal during autumn and spring seasons of 2014 and 2015 respectively. Four - week old virus free in vitro plantlets grown in tissue culture laboratory were planted with 20 cm distance between rows and 10 cm between plantlets under glasshouse in completely randomized design. Three growth regulators, paclobutrazol (50 ppm), daminozide (100 ppm), chlormequat chloride (Cycocel) (200 ppm) and simple water as control were used for single foliar spray 6 weeks after transplanting with four replications. Analysis showed that there were significant differences on growth parameters; plant survival, plant uniformity, plant height and yield components; number of minitubers per plant and per square meter in both the seasons. Significantly maximum number of potato minitubers was recorded in growth retardants treated plants as compared to control. Experimental results showed that maximum number of minituber (22.9/plant and 668.2/m2) in autumn and (23.7/plant and 1185.0/m2) in spring season were gained from paclobutrazole spray, which were statistically differed from those of other growth regulators and control. Plants without PGR and treated with daminozide produced the least amount of minituber per unit area. Plant height decreased in all growth regulators over control due to their inhibiting effect on growth of the plants. paclobutrazol significantly reduced plant height but produced larger and heavier minitubers compared to other treatments. Hence, the best PGR for optimum enhancement of minituber number and size was paclobutrazol. The results suggested that paclobutrazol could be used in pre-basic seed potato production, leading to maximum minituber production which ultimately gave higher returns. The study concluded that spraying growth retarding chemicals at grand growth stage checked the excessive vegetative growth and increased the number and size of minituber.SAARC J. Agri., 15(1): 149-160 (2017)

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