THE EFFECT OF DESICCATION DATE ON TUBER SIZE DISTRIBUTION AND PROCESSING QUALITY PARAMETERS OF FOUR POTATO CULTIVARS

Seed-piece spacing is an important economic consideration in the production of potatoes and optimum varies by cultivar and intended market. A study was designed to determine the influence of seed-piece spacing on yield, tuber size distribution, net returns and stem and tuber density of three processing potato cultivars. Seed tubers of cvs. Russet Burbank, Frontier Russet and Ranger Russet were planted 8, 15, 23, 31, 46, 61, 76, or 91 cm apart at two locations in 1988 and 1989. Total, marketable (U.S. No. 1), and mid-size (226–452 g tubers) yield, yield of five incremental size categories, net profits from a typical processing contract, and stem and tuber density (number per m of row) were determined. All three cultivars achieved highest total yields at the narrowest (8 cm) spacing. Marketable and mid-size yield were optimized between 15 and 31 cm depending on the cultivar. The size distribution of tubers shifted from a predominance of small tubers at the narrow spacing treatments to a predominance of large tubers at the wide spacing treatments. The rate of shift across spacing treatments was cultivar dependent. Russet Burbank showed a bimodal response to spacing for net returns with optimums at the 23- and 46-cm spacing treatments. Frontier Russet and Ranger Russet showed optimums at 23 cm. All three cultivars gave maximum mid-size yields at a stem density of 10.5–12.1 per m of row and a tuber density of 23.9–24.9 per m of row.

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Seed Piece Spacing Influences Yield, Tuber Size Distribution, Stem and Tuber Density, and Net Returns of Three Processing Potato Cultivars

HortScience ◽

10.21273/hortsci.34.4.629 ◽

1999 ◽

Vol 34 (4) ◽

pp. 629-633 ◽

Cited By ~ 18

Author(s):

Stephen L. Love ◽

Asunta Thompson-Johns

Keyword(s):

Size Distribution ◽

Seed Piece ◽

Tuber Size ◽

Russet Burbank ◽

Potato Cultivars ◽

Stem Density ◽

Ranger Russet ◽

Tuber Size Distribution ◽

Net Returns ◽

Optimum Spacing

Seed piece spacing is an important economic consideration in the production of potatoes (Solanum tuberosum L.). The optimum spacing varies with cultivar and intended market. A study was designed to determine the influence of seed piece spacing on yield, tuber size distribution, net returns, and stem and tuber density of three processing potato cultivars. Seed tubers of cultivars Russet Burbank, Frontier Russet, and Ranger Russet were planted 8, 15, 23, 31, 46, 61, 76, or 91 cm apart at two locations in 1988 and 1989. Total, marketable (U.S. No. 1), and midsize (226–452 g tubers) yield, tuber size distribution, net profits from a representative processing contract, and stem and tuber density (number per meters of row) were determined. All three cultivars achieved highest total yields at the narrowest (8 cm) spacing. Maximum marketable and midsize (226–452 g) yield occurred between 15 and 31 cm, depending on the cultivar. Size distribution shifted from a predominance of small tubers at narrow spacings to a predominance of large tubers at wide spacings, and the rate of shift was cultivar-dependent. `Russet Burbank' showed a broad range of optimal spacing for net returns, with a maximum in the range of 23 to 46 cm. Optima for `Frontier Russet' and `Ranger Russet' were between 15 and 46 cm. Of the four tuber measurements, midsize yield appeared to be best for determining optimum spacing. Marketable yield was also a useful measurement. All three cultivars gave maximum midsize yields at a stem density of 10.5 to 12.1 per meter of row and a tuber density of 23.9 to 24.9 per meter of row. Tuber density showed some promise as a predictor of optimum seed piece spacing for new cultivars.

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

Agronomy Journal ◽

10.2134/agronj1990.00021962008200010020x ◽

1990 ◽

Vol 82 (1) ◽

pp. 88-90 ◽

Cited By ~ 4

Author(s):

J. B. Sanderson ◽

R. P. White ◽

H. W. Platt ◽

J. A. Ivany

Keyword(s):

Size Distribution ◽

Tuber Size ◽

Tuber Size Distribution

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

The Journal of Agricultural Science ◽

10.1017/s0021859600054708 ◽

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.

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

Potato Research ◽

10.1007/bf02360532 ◽

1993 ◽

Vol 36 (3) ◽

pp. 237-245 ◽

Cited By ~ 5

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

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

The Journal of Agricultural Science ◽

10.1017/s0021859600081788 ◽

1987 ◽

Vol 109 (3) ◽

pp. 563-571 ◽

Cited By ~ 15

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.

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

The Journal of Agricultural Science ◽

10.1017/s0021859600059165 ◽

1974 ◽

Vol 82 (2) ◽

pp. 277-282 ◽

Cited By ~ 18

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.

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Yield potential and tuber-size distribution using EVIKA multiplication methods

Acta Agriculturae Scandinavica Section B - Soil & Plant Science ◽

10.1080/09064710902965332 ◽

2010 ◽

Vol 60 (4) ◽

pp. 297-306 ◽

Cited By ~ 2

Author(s):

Marje Särekanno ◽

Jüri Kadaja ◽

Katrin Kotkas ◽

Viive Rosenberg ◽

Virge Vasar ◽

...

Keyword(s):

Size Distribution ◽

Tuber Size ◽

Yield Potential ◽

Tuber Size Distribution

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

Canadian Journal of Plant Science ◽

10.4141/p96-087 ◽

1997 ◽

Vol 77 (1) ◽

pp. 141-148 ◽

Cited By ~ 5

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

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