Potato (Solanum spp.) in an isohyperthermic environment IV. Effects of cutting seed tubers

Zaag, P. Vander; Demagante, A.L.

doi:10.1016/0378-4290(89)90019-1

Cited by 2 publications

(4 citation statements)

References 6 publications

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“…According to Allen (1979), reducing the number of dormant buds is one of the major advantages of cutting seed tubers, so it is assumed that increasing the extent of cutting attenuated the degree of bud dormancy, consequently increasing bud sprouting, forming more stems, approaching that was resulted from the three-eyed piece. Similar effect was recorded previously by Vanderzaag and Demagante (1989) who found that the number of stems produced from the seed tuber quarter was equivalent to that produced from the seed tuber half in cultivars Berolina and Perricholi. They also added that there is another important yield-determining factor, which is the canopy duration, leads to better prediction of yield than the number of stems/ m 2 .…”

Section: Discussionsupporting

confidence: 90%

“…This is attributed to the lower number of tubers produced in response to cultivation of pieces having lower eye number, thereby the individual tuber weight is increased. According to Vanderzaag and Demagante (1989), tuber seed cutting is a way to reducing the number of tubers produced, thereby increasing tuber weight.…”

Section: Discussionmentioning

confidence: 99%

“…The cost of seed tubers constitutes 60-70 % of the total crop production cost (Mayakaduwa et al, 2017), therefore, seed tubers should be used at the minimum amount that substantiate good crop. So, it is a common practice to cut seed tubers into pieces with variations in the extent and type of cutting (Vanderzaag and Demagante, 1989;Hossain et al, 2011;Mayakaduwa et al, 2017;Diop et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Seed Tuber Piece Size and The Number of Eyes on Growth and Yield of Potato (Solanum tuberosum L.) تأثير حجم و عدد العيون فى درنات التقاوى على نمو و محصول البطاطس Solanum tuberosum L.

Ibrahim

2021

Journal of Plant Production

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This research was done to evaluate the growth and yield of potato plants raised from seed tuber pieces (STP) containing one, two, three and four eyes, for ascertaining whether seed tuber pieces containing two eyes will sustain potato growth and yield indifferently from those of larger seed tuber pieces containing more eyes. Results indicated that number of stolons and leaves per plant, leaf area, plant fresh and dry weight, relative growth rate, net assimilation rate, crop growth rate, chlorophyll a, b as well as total chlorophylls, Number of tubers and total tuber yield per plant were decreased with decreasing number of eyes in the STP. However, final emergence percentage and total carotenoids content were not significantly affected. Nevertheless, number of tubers and total tuber yield per plant did not differ significantly neither between whole seed tubers and half seed tubers containing four eyes nor half STP containing three eyes and quarter STP containing two eyes. However, all these parameters were significantly lower in response to single-eye STP compared with those containing two eyes or more. From the economic point of view, cultivation of quarter STP containing two eyes instead of half STP containing four eyes represents 50 % conservation in the seed tubers used for only 13.5 % loss in tubers yield. So, it could be concluded that the gain in net income became substantiated by cultivation of quarter STP containing at least two eyes instead of larger seed tuber pieces, even that represents half of the seed tuber.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Seed Tuber Piece Size and The Number of Eyes on Growth and Yield of Potato (Solanum tuberosum L.) تأثير حجم و عدد العيون فى درنات التقاوى على نمو و محصول البطاطس Solanum tuberosum L.

Ibrahim

2021

Journal of Plant Production

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“…This practice is sometimes also applied in other tuber crops such as Irish potato to increase the number of stems by circumventing the dominance of nearby stems (e.g. van der Zaag & Demagante 1989). Planting more pieces/hole after breaking outweighed the negative effect of a lower weight of the individual seed pieces on number of main stems (Expt 2, Tables 1 and 3).…”

Section: Discussionmentioning

confidence: 99%

Effects of breaking seed tubers on yield components of the tuber crop Plectranthus edulis

2012

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Plectranthus edulis is an ancient tuber crop, cultivated in Ethiopia, which produces stem tubers on stolons below the ground; however, agronomic and physiological information on this crop is scarce. Three field experiments were carried out at each of two locations (Awassa and Wondogenet, Ethiopia). Expt 1 dealt with the effects of breaking a seed tuber into different numbers of seed pieces before planting, Expt 2 assessed the effect of the weight of the seed tuber piece and Expt 3 investigated the effect of planting different numbers of seed pieces per planting hole. Cultivar Lofuwa was planted in Awassa, whereas cvar Chankua was planted in Wondogenet. Breaking seed tubers in Expt 1 resulted in more main stems/hill, more tubers and smaller individual tubers. In Wondogenet, the tuber yield also increased. Breaking did not affect the number of stolons/m 2 . Expt 2 indicated that when only one seed piece was planted per planting hole, smaller seed pieces gave fewer stems, fewer stolons and fewer tubers/m 2 , smaller tubers and lower tuber yields. Expt 3 showed that planting more seed pieces/planting hole gave more stems, more stolons and more tubers/m 2 , thus increasing tuber fresh yield/m 2 , whereas the mean tuber weight was not consistently affected. Across all experiments, the tuber yield increased when the number of main stems increased up to three main stems/m 2 . Higher tuber yields resulting from experimental treatments were either achieved by an effect on number of tubers alone or by combined effects on number of tubers and mean tuber weight, but not by an effect on mean tuber weight alone. The number of small tubers was high in all experiments. Breaking a seed tuber into two or three pieces before planting them in one planting hole consistently resulted in increased numbers of main stems and tuber yield.

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Potato (Solanum spp.) in an isohyperthermic environment IV. Effects of cutting seed tubers

Cited by 2 publications

References 6 publications

Effect of Seed Tuber Piece Size and The Number of Eyes on Growth and Yield of Potato (Solanum tuberosum L.) تأثير حجم و عدد العيون فى درنات التقاوى على نمو و محصول البطاطس Solanum tuberosum L.

Effect of Seed Tuber Piece Size and The Number of Eyes on Growth and Yield of Potato (Solanum tuberosum L.) تأثير حجم و عدد العيون فى درنات التقاوى على نمو و محصول البطاطس Solanum tuberosum L.

Effects of breaking seed tubers on yield components of the tuber crop Plectranthus edulis

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