The impact of some agronomic factors on the variability of potato tuber size distribution

1993 ◽  
Vol 36 (3) ◽  
pp. 237-245 ◽  
Author(s):  
D. C. E. Wurr ◽  
Jane R. Fellows ◽  
J. R. Lynn ◽  
E. J. Allen
Keyword(s):  
Potato Tuber ◽  
Size Distribution ◽  
Tuber Size ◽  
Tuber Size Distribution ◽  
The Impact

The effects of the growth-regulating compounds methyl decanoate and 2, 3, 5-triiodobenzoic acid on potato tuber size

1976 ◽  
Vol 86 (2) ◽  
pp. 251-255
Author(s):  
D. C. E. Wurr
Keyword(s):  
Potato Tuber ◽  
Size Distribution ◽  
Tuber Yield ◽  
Potato Crop ◽  
Total Yield ◽  
Tuber Size ◽  
Tuber Initiation ◽  
Triiodobenzoic Acid ◽  
Tuber Size Distribution ◽  
Methyl Decanoate

SummaryApplication of methyl decanoate to a potato crop about the time of tuber initiation reduced the total yield and the yield of tubers in the grade 2·5–5·5 cm though neither of these reductions were significant. However, application of 2,3,5-triiodobenzoic acid increased the yield of tubers 2·5–5·5 cm by up to 20% while having no significant effect on total tuber yield. This change in the tuber size distribution was due to a more even partition of photosynthate between tubers and not to an increase in the total number of tubers.

Foliar‐Applied Daminozide Effect on the Yield and Tuber Size Distribution of Potato

1990 ◽  
Vol 82 (1) ◽  
pp. 88-90 ◽  
Author(s):  
J. B. Sanderson ◽  
R. P. White ◽  
H. W. Platt ◽  
J. A. Ivany
Keyword(s):  
Size Distribution ◽  
Tuber Size ◽  
Tuber Size Distribution

Effects of nitrogen application and seedpiece spacing on yield and tuber size distribution in eight potato cultivars

2001 ◽  
Vol 78 (4) ◽  
pp. 301-309 ◽  
Author(s):  
Walter J. Arsenault ◽  
Debby A. LeBlanc ◽  
George C. C. Tai ◽  
Peter Boswall
Keyword(s):  
Size Distribution ◽  
Tuber Size ◽  
Potato Cultivars ◽  
Nitrogen Application ◽  
Tuber Size Distribution

Use of a simple model to study factors affecting the size distribution of tubers in potato crops

1987 ◽  
Vol 109 (3) ◽  
pp. 563-571 ◽  
Author(s):  
K. Z. Travis
Keyword(s):  
Mathematical Model ◽  
Size Distribution ◽  
Field Experiments ◽  
Tuber Yield ◽  
Tuber Size ◽  
Simple Mathematical Model ◽  
Factors Affecting ◽  
Tuber Size Distribution ◽  
Two Parameters ◽  
Potato Crops

SummaryA simple mathematical model of the distribution of potato tuber yield between size grades is presented. It has two parameters, μ, a measure of crop tuber size and σ, a measure of the spread of yield across size grades. The model is shown to be useful for the analysis of field experiments, the prediction and physiological study of tuber size distribution, and the economic analysis of management decisions. The model is applied to a variety of dataandthe practical control of tuber size discussed.

Some effects of planting density and variety on the relationship between tuber size and tuber dry-matter percentage in potatoes

1974 ◽  
Vol 82 (2) ◽  
pp. 277-282 ◽  
Author(s):  
D. C. E. Wurr ◽  
E. J. Allen
Keyword(s):  
Size Distribution ◽  
Dry Matter ◽  
Tuber Size ◽  
Planting Density ◽  
Stem Density ◽  
Standard Analysis ◽  
Tuber Size Distribution ◽  
Tuber Dry Matter ◽  
Quadratic Response ◽  
The Relationship

SummaryThree experiments are reported which investigated the effects of planting density and variety on the relationship between tuber dry-matter percentage and tuber size. In the first experiment dry-matter determinations were made on samples of tubers less than 3·8 cm and greater than 3·8 cm from different planting densities obtained at eight fortnightly harvests. Standard analysis of variance was used for each harvest date and apart from Maris Piper giving consistently higher dry-matter percentages than Pentland Crown for the same tuber sizes, effects were small and difficult to interpret. The reasons for the problems in interpretation, which were mainly due to differences in tuber size distribution, are discussed.In the second and third experiments the effects of tuber-size distribution were removed by regression analyses of tuber dry-matter percentage on tuber size in definable grades and curves were fitted to the data. These curves revealed that tuber dry-matter percentage tends to show a quadratic response to increasing tuber size and is affected by variety and stem density. The significance of these results is discussed.

Yield potential and tuber-size distribution using EVIKA multiplication methods

2010 ◽  
Vol 60 (4) ◽  
pp. 297-306 ◽  
Author(s):  
Marje Särekanno ◽  
Jüri Kadaja ◽  
Katrin Kotkas ◽  
Viive Rosenberg ◽  
Virge Vasar ◽  
...  
Keyword(s):  
Size Distribution ◽  
Tuber Size ◽  
Yield Potential ◽  
Tuber Size Distribution

Influence of irrigation, nitrogen and seed piece spacing on yields and tuber size distribution of seed potatoes

1997 ◽  
Vol 77 (1) ◽  
pp. 141-148 ◽  
Author(s):  
Doug Waterer
Keyword(s):  
Size Distribution ◽  
Seed Piece ◽  
Total Yield ◽  
Tuber Size ◽  
Russet Burbank ◽  
Row Spacing ◽  
Total N ◽  
Tuber Size Distribution ◽  
Seed Spacing ◽  
Yield Responses

This study examined the influence of irrigation, soil nitrogen (N) levels and seed piece spacing on the yields and tuber size distribution of Norland, Russet Burbank and Shepody potatoes over three seasons at two sites in central Saskatchewan. The crops were grown under standard irrigated conditions or on dryland with in-row spacings of 15, 23 or 30 cm and total N levels of 200 or 300 kg ha−1 as either preplant or split applications. Irrigation greatly enhanced yields of all tuber size categories in the drier years but had less effect if seasonal precipitation reached or exceeded normal levels. Smaller size tubers formed a greater proportion of the total yield in crops exposed to drought stress. Norland was less affected by drought than the later-maturing cultivars. Yield responses to N were limited to situations where soil moisture was abundant or crop demand for nutrients was increased by close in-row spacings. Close in-row spacing increased total yields in some cases, while in others it resulted in a reduction in tuber size with little effect on overall yields. Yields for the cultivar Norland were less affected by seed piece spacing than yields for Russet Burbank or Shepody. Key words: Solanum tuberosum, drop seed, spacing, fertility

scholarly journals Effects of Plant Spacing and Time of Harvesting on Yield and Tuber Size Distribution of Potato (<i>Solanum tuberosum</i> L) Variety Southeast Ethiopia

2021 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Demis Fikre Limeneh ◽  
Fekadu Gebretensay Mengistu ◽  
Gizaw Wegayehu Tilahun ◽  
Dasta Tsagaye Galalcha ◽  
Awoke Ali Zeleke ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Size Distribution ◽  
Tuber Size ◽  
Plant Spacing ◽  
Tuber Size Distribution ◽  
Southeast Ethiopia
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