On-farm Development of Potato Production from True Seed in Indonesia

Gunadi, N.; Potts, Michael; Sinung-Basuki, R.; Watson, G. A.

doi:10.1017/s0014479700022985

Cited by 3 publications

(6 citation statements)

References 2 publications

(2 reference statements)

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“…Yields increased slightly with successive sowings but numbers of tubers decreased as farmers modified practices to obtain larger seedling tubers. Overall, yields were comparable to many research station experiments (Sinung-Basuki, 1988;Gunadi et al, 1992). No farmer produced seedling tubers in a nursery bed in Season 3, but one farmer multiplied his very small seedling tubers (smaller than 2 g) in a nursery bed, a technique that has been proposed by several researchers (Wiersema etal., 1987).…”

Section: Nursery Bedsupporting

confidence: 76%

“…The following season, they felt that they understood the crop which, in the field, they likened to a 'normal' potato crop, and thus they concentrated on establishment and direct comparisons between progeny or between seedling tubers and direct transplants (Tables 2 and 3). Yields were invariably superior to those on the experiment station, thus no 'yield gap' occurred (Gunadi et al, 1992).…”

Section: Field Plotsmentioning

confidence: 88%

“…After discussion of the group's activities, each of the farmers received 500 seeds of one of the progenies to sow according to their own ideas (Gunadi et al, 1992). However, in a desire to please station staff, they followed similar methods to those used in the communal plot.…”

Section: Seasonmentioning

confidence: 99%

“…Date, plot size and weight and number of tubers by size grade were noted at harvest (Gunadi et al, 1992), together with farmers' opinions regarding yield, quality, uniformity and other characteristics of the produce. The small tubers were stored according to the farmers' own practices.…”

Section: Seasonmentioning

confidence: 99%

“…This paper describes the experimental methodologies adopted by farmers to develop this radical concept. The following paper by Gunadi et al (1992) presents detailed agronomic procedures and findings.…”

Section: Introductionmentioning

confidence: 99%

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Farmer Experimentation as a Basis for Cropping Systems Research: A Case Study Involving True Potato Seed

Potts¹,

Watson²,

Sinung-Basuki³

et al. 1992

Ex. Agric.

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The radical concept of potato production from true potato seed (TPS) was adopted as a component of their farming system within three seasons by 23 farmers from Cibodas, West Java. The farmers showed an ability to conceptualize and experiment and desired concepts from which they could develop, through research, appropriate principles and field techniques. Information received solely as detailed practices or techniques hindered their progress, since they first needed to repeat the technique in order to understand the concepts and principles involved. Farmer experimentation resembled closely that of experimental station researchers, with the use of replication in space, often neighbouring farmers' plots, and time. Initial experiments covered a wide range of factors but within three seasons farmers had identified similar areas of concern which coincided with those of experiment station researchers worldwide. Farmer experimentation and the role of the researcher in this methodology for technology development are discussed.Un caso de estudio sobre experimentation agricola RESUMEN El concepto radical en cuanto a la production de papa a partir de semilla de papa verdadera (SPV) fue adoptado como componente de su sistema agricola durante tres temporadas por parte de 23 agricultores de Cibodas, Java del Oeste. Los agricultores demostraron su habilidad para conceptualizar y experimentar, con los conceptos necesarios a partir de los cuales poder desarrollar, a traves de la investigacion, los principios y tecnicas de campo apropiados. La information solo recibida en forma de practicas o tecnicas detalladas obstaculizo su progreso, dado que en primer lugar se debio repetir la tecnica a fin de comprender los conceptos y principios del caso. La experimentacion agricola resulto extremadamente similar a la de los investigadores de una estacion experimental, con el uso de replication en espacio-a menudo las tierras de agricultores vecinos -, y tiempo. Los experimentos iniciales cubrieron una amplia gama de factores, pero en el transcurso de las tres temporadas los agricultores pudieron identificar areas de interes que coincidian con las de los investigadores experimentales en todo el mundo. Se discute la experimentacion agricola y el papel del investigador en esta metodologi'a para el desarrollo de tecnologia. § Present address: Fortalecimiento de la Investigacion de Tuberculo Semilla Prebasco de Papa en Bolivia (PROINPA), PO Box 4285, Cochabamba, Bolivia. 20 M. j . POTTS et al.

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Section: Nursery Bedsupporting

confidence: 76%

Section: Field Plotsmentioning

confidence: 88%

Section: Seasonmentioning

confidence: 99%

Section: Seasonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Farmer Experimentation as a Basis for Cropping Systems Research: A Case Study Involving True Potato Seed

Potts¹,

Watson²,

Sinung-Basuki³

et al. 1992

Ex. Agric.

Self Cite

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A review of potato propagation by means of seed, as distinct from clonal propagation by tubers

Simmonds

1997

Potato Res

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SummaryThe vast majority of cultivated potatoes are vegetatively propagated, outbred autotretraploids. Disease problems dominate the maintenance of vegetative stocks. There have been recent proposals to propagate the crop by sexual seed in order to evade some of those disease problems. Some success has been achieved but controlled crosses are necessary fo avoid inbreeding depression and seed propagation is not as cheap or simple as had been hoped. The idea has evoked wide interest throughout the tropics and has had some (and increasing) practical impact on China, India and Vietnam. There is a strong tendency to use ~tuberlets' borne on crowded nursery plants rather than to grow true seedlings. Some seedling families have looked locally attractive but it is not always realised that to use them implies the abandonment of about half the genetic variation, a heavy price to pay for disease avoidance. There is emerging recognition that vegetative and seed propagation are complementary rather than competitive and that good breeding programmes will therefore serve both. This review concentrates upon genetic/plant breeding aspects of propagation by seed, a subject hitherto largely neglected in the literature.

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