Effects of several microbial seedpiece treatments on emergence, yield, tuber defects, tuber size distribution, and specific gravity of Katahdin and Russet Burbank potatoes in Maine

1983 ◽  
Vol 60 (3) ◽  
pp. 179-187 ◽  
Author(s):  
G. A. Porter ◽  
H. J. Murphy
Keyword(s):  
Specific Gravity ◽  
Size Distribution ◽  
Tuber Size ◽  
Russet Burbank ◽  
Tuber Size Distribution ◽  
Tuber Defects

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

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

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 536a-536
Author(s):  
Stephen L. Love ◽  
Asunta Thompson-Johns
Keyword(s):  
Size Distribution ◽  
Seed Piece ◽  
Tuber Size ◽  
Russet Burbank ◽  
Potato Cultivars ◽  
Stem Density ◽  
Economic Consideration ◽  
Ranger Russet ◽  
Tuber Size Distribution ◽  
Net Returns

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.

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

HortScience ◽  
1999 ◽  
Vol 34 (4) ◽  
pp. 629-633 ◽  
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.

Response to added nitrogen of a continuous potato sequence as related to sand thickness over clay

2007 ◽  
Vol 87 (4) ◽  
pp. 829-839 ◽  
Author(s):  
A. N. Cambouris ◽  
B. J. Zebarth ◽  
M. C. Nolin ◽  
M. R. Laverdière
Keyword(s):  
Solanum Tuberosum ◽  
Specific Gravity ◽  
Size Distribution ◽  
Management Practices ◽  
Tuber Yield ◽  
N Uptake ◽  
Tuber Size ◽  
Fertilizer N ◽  
Marketable Tuber ◽  
Tuber Size Distribution

This study evaluated the effect of rate and timing of N fertilizer application on tuber yield, tuber size distribution and tuber specific gravity of potato (Solanum tuberosum L.) in two sites in a commercial field in 1999–2001. One trial was established at each of the two sites chosen to represent two management zones (MZ) previously delineated by soil electrical conductivity, and differing in soil water availability, as controlled by depth to a clayey substratum. Each trial had 21 treatments including five rates of ammonium nitrate (0–200 kg N ha-1 in 1999; 0–240 kg N ha-1 in 2000 and 2001), each applied according to five application timings (100, 75, 50, 25 or 0% of N applied at planting with the remainder applied at hilling). Increasing N rate increased total and marketable tuber yields in both sites. The N rates required to optimize economic return ranged from 167 to 239 kg ha-1 among years and between sites. Nitrogen fertilizer applied all at planting or all at hilling decreased tuber yields in both sites compared with split N application. The percentage of N rate applied at planting to achieve the maximum marketable tuber yield varied among years from 34 to 61% and allowed a yield increase of 2 to 20%. The proportion of large tubers was higher in the site with a greater depth to the clayey substratum (DMZ site) than in the site with a shallower depth to the clayey substratum (SMZ site). Tuber yield and tuber N uptake were higher in the SMZ site than in the DMZ site when no fertilizer N was applied, and tuber yield was more responsive to fertilizer N rate in the DMZ site than in the SMZ site in one year; however, these differences are not sufficient to justify different fertilizer N management for the two sites. The two sites frequently differed in terms of tuber yield, tuber size and specific gravity, which are important parameters in determining tuber processing quality but the optimal N rate and N timing were similar. These differences may be sufficiently large to justify different potato management practices (e.g., nutrient management, seedpiece spacing) to optimize potato production for the chip processing market. Key words: Solanum tuberosum, marketable yield, tuber size distribution, specific gravity, N economic optimum

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

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.

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

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.

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