The effect of in-row seed piece spacing and harvest date of the tuber yield and processing quality of Conestoga potatoes in southern Manitoba

1991 ◽  
Vol 71 (1) ◽  
pp. 289-296 ◽  
Author(s):  
Brian L. Rex
Keyword(s):  
Specific Gravity ◽  
Seed Piece ◽  
Tuber Yield ◽  
Hollow Heart ◽  
Chip Color ◽  
Harvest Date ◽  
Processing Quality ◽  
Marketable Yield ◽  
Chip Processing ◽  
Large Tuber

Conestoga was registered in Canada in 1982. It has been readily accepted by chip producers and processors in Manitoba, although little information on the effect of commercial production practices on the yield and processing quality under Manitoba conditions is available. In this study, the effect of within-row seed piece spacing at three harvest dates on Conestoga potatoes for the early-season chip processing market was evaluated under rainfed conditions in southern Manitoba in 1982, 1983 and 1986. Treatments consisted of spacings of 22, 30, 38 and 46 cm between seed pieces within the row, with 1 m between row centers, harvested at 10-d intervals starting at 75 ± 5 d after planting (DAP) each year. As spacing between seed pieces increased, total, small and maingrade tuber yield and number, and specific gravity decreased. Large tuber yield and number increased. The number of mainstems per plant, the incidence of hollow heart and chip color were unaffected. Delaying harvest resulted in an increased yield of total and maingrade tubers, and higher specific gravity. The highest marketable yield (maingrade plus large tubers) resulted from the 22-cm in-row spacing. The total number of tubers harvested and the number of maingrade tubers increased between 75 and 85 DAP, but did not increase substantially after 85 DAP. Chip color and the incidence of hollow heart were not significantly affected by harvest date. Key words: Potato, population, spacing, harvest date, hollow heart, chip color

scholarly journals Seed Piece Spacing for Spring Chipping Potato Cultivars in Florida

HortScience ◽  
2017 ◽  
Vol 52 (2) ◽  
pp. 230-235
Author(s):  
Fernanda Souza Krupek ◽  
Christian T. Christensen ◽  
Charles E. Barrett ◽  
Lincoln Zotarelli
Keyword(s):  
Specific Gravity ◽  
Seed Piece ◽  
Production Cost ◽  
Block Design ◽  
Potato Cultivars ◽  
Row Spacing ◽  
Marketable Yield ◽  
Industry Standard ◽  
Significant Difference ◽  
Chipping Potato

The cost of seed accounts for nearly 10% of the estimated production cost of chipping potato (Solanum tuberosum) production in Florida. Optimizing seed piece spacing can reduce costs without affecting potato yield. This study evaluated the effects of seed piece spacing on yield, quality, and economic revenue of chipping potato production in north Florida. A field experiment was conduct during the spring of 2013, 2014, and 2016 in Hastings, FL, with a split-plot randomized complete block design. In-row seed piece spacings of 10, 15, 20 (industry standard), 25, and 30 cm were assigned as the main plot and S. tuberosum potato cultivars (Atlantic, Harley Blackwell, and Elkton) as the subplots. Marketable tuber yield ranged between 10.8 and 15.2 Mg·ha−1 in 2013, 10.1 and 12.8 Mg·ha−1 in 2014, and 9.9 and 19.7 Mg·ha−1 in 2016. Overall lower yields in 2013 were due to three freeze events early in the season. Widening seed piece spacing resulted in a linear decrease in total and marketable yield in 2013 and 2014. Conversely, seed piece spacings of 10 and 15 cm showed lower marketable yields in 2016. There was no interaction between in-row spacing and cultivar in any year tested. Cultivars performed variably across years for total and marketable yield and specific gravity. Tuber specific gravity was unaffected by seed piece spacing, except in 2013, when 25 and 30 cm resulted in slightly higher values. There was no significant difference in total and marketable yield between the industry standard seed piece spacing 20 and 25 cm in any year. In-row spacing of 25 cm in 2013 and 30 cm seed piece spacing in 2014 and 2016 provided the greatest economic return. Net revenue can be increased by adjusting the in-row seed piece spacing from the commercial standard of 20 to 25 cm, which reduces production cost without negatively impacting yields.

scholarly journals Selection and Evaluation of 21 Potato (Solanum Tuberosum) Breeding Clones for Cold Chip Processing

Foods ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 98 ◽  
Author(s):  
Benjamin Wayumba ◽  
Hyung Choi ◽  
Lim Seok
Keyword(s):  
Specific Gravity ◽  
Dry Matter ◽  
Reducing Sugars ◽  
Chip Color ◽  
Reducing Sugar ◽  
Snack Food ◽  
Dry Matter Content ◽  
High Dry Matter ◽  
Chip Processing ◽  
Sugar Levels

Quality evaluations in potatoes are of necessity to meet the strict demands of the chip processing industry. Important parameters assessed include specific gravity, dry matter content, chip color, reducing sugars, and glycoalkaloids. This study was designed with the purpose of identifying specialized potato clones with acceptable qualities for processing chips, in comparison with two selected control varieties, Dubaek and Superior. As a result, high dry matter and specific gravity were observed for three potato clones, and the quantified ά-solanine levels ranged from 0.15 to 15.54 mg·100 g−1 fresh weight (FW). Significant variations (p < 0.05) in reducing sugar levels were observed in clones stored at different temperature conditions. After reconditioning of the tubers at 22 °C for 21 days, a significant drop in reducing sugar levels was recorded. In addition, fried chips for each potato clone were evaluated, and the color measured on the basis of the Snack Food Association (SFA) chip color score standard. Reconditioned tubers exhibited much lighter and better chip color compared to their counterparts cold-stored at 4 °C. This study observed that for quality processing of potato chips, clones with combined traits of high dry matter, low levels of glycoalkaloids and reducing sugars, and acceptable chip color should be used as raw materials.

scholarly journals Effect of potassium sources on potato tuber yield and chip quality

2018 ◽  
Vol 36 (3) ◽  
pp. 395-398 ◽  
Author(s):  
Giovani O Silva ◽  
Antonio C Bortoletto ◽  
Agnaldo DF Carvalho ◽  
Arione S Pereira
Keyword(s):  
Specific Gravity ◽  
Potassium Chloride ◽  
Tuber Yield ◽  
Soil Analysis ◽  
Chip Color ◽  
Potassium Sulfate ◽  
Tuber Quality ◽  
Chip Quality ◽  
Potassium Sources ◽  
Red Latosol

ABSTRACT Many potato producers for fry industry changed from the use of potassium chloride to potassium sulfate, as there is a concept that the use of this source improves tuber quality. The aim of this work was to evaluate the effect of these two potassium sources on yield, specific gravity and chip color of potato chipping cultivars. The experiment was carried out on a Dystrophic Red Latosol, in Canoinhas, Brazil, in spring season 2016. Treatments consisted of two potato cultivars, BRSIPR Bel and Atlantic, and two sources of potassium, chloride and sulfate, applied in the furrow at the planting time, in rates based on soil analysis. Experimental design was a randomized complete block in a split-plot arrangement with four replications. Main plots were cultivars and subplots potassium sources. 100 days after planting each sub-plot was evaluated for yield, specific gravity and chip color. There was no significant effect of potassium source on yield components, specific gravity and chip color of BRSIPR Bel and Atlantic.

scholarly journals 455 Response of Irrigated Potatoes to Polyolefin-coated Urea

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 523B-523
Author(s):  
Francis Zvomuya ◽  
Carl J. Rosen
Keyword(s):  
Total Yield ◽  
Hollow Heart ◽  
Nutrient Release ◽  
Marketable Yield ◽  
N Sources ◽  
Large Tuber ◽  
Slow Release Fertilizers ◽  
Coated Urea ◽  
N Rates ◽  
Coated Fertilizers

Polyolefin-coated fertilizers are slow-release fertilizers coated with thermoplastic resins that have a temperature-dependent nutrient release pattern. A field study was conducted on a Hubbard loamy sand during 1997 and 1998 at Becker, Minn., to evaluate the effect of polyolefin-coated urea (POCU) fertilizers (Meister, Chisso Co., Japan) on yield and quality of irrigated `Russet Burbank' potatoes (Solanum tuberosum L.). The coated fertilizers were POCU-50 and POCU-70, which release 80% of their N in 50 and 70 days, respectively, at 25 °C, and a 1 POCU-50: 1POCU-70 mixture. The study compared three soluble urea treatments (N at 0, 140, and 280 kg·ha-1) split-applied at planting, emergence, and hilling vs. the same N rates of coated urea fertilizers applied in a band at planting. In 1997, a season characterized by high leaching, total and large tuber (>168 g) yields were higher with coated urea sources than soluble urea at equivalent N rate, but the N sources gave similar yields in 1998 when leaching was minimal. In both years, doubling the rate of N as soluble or coated urea from 140 to 280 kg·ha-1 had no effect on total yield, but increased the marketable yield (tuber size). Yields were higher in 1998 compared to 1997 due to poorer tuber set in 1997. However, the percentage of large tubers was higher in 1997. Specific gravity increased slightly with N rate but did not differ with N source at equivalent N rate. Hollow heart incidence was similar among all treatments in 1997, but it increased with N rate and was similar among N sources in 1998.

scholarly journals Tuber yield and processing quality response of French fried potatoes to nitrogen fertilization

2019 ◽  
Author(s):  
Lili Jiang ◽  
Ziquan Wang ◽  
Guanghui Jin ◽  
Guizhi Zhang ◽  
Chunyu Zhang
Keyword(s):  
Tuber Yield ◽  
Sugar Content ◽  
High Yield ◽  
Dry Matter Content ◽  
Processing Quality ◽  
Marketable Yield ◽  
N Losses ◽  
N Application ◽  
Application Rates ◽  
Fried Potatoes

AbstractNitrogen (N) is an important factor that influences potato production; appropriate N fertilizer management can optimize tuber yield and quality and thus reduce the risk of environmental N losses. The present study aimed to evaluate the effects of different nitrogen (N) application rates (0, 75, 150, 225, 300, and 375 kg ha−1) on the total tuber yield, marketable yield, dry matter content, reducing sugar content, sucrose content of tuber, and fry color index of two potato cultivars (Kennebec and Shepody) in 2016 and 2017. N supply significantly affected tuber yield and processing quality, but these effects depended on the year and/or cultivar. The results indicated that low (75 kg ha−1) and medium-N application rates (150 or 225 kg ha−1) had a positive effect on tuber yield and processing quality; however, high-N application rates (300 and 375 kg ha−1) resulted in lower yield and poor quality. Total and marketable yields responded quadratically to N, and they were optimized at 150 kg ha −1 for Kennebec and 225 kg ha−1 for Shepody in both the years. The processing quality of tubers also responded quadratically with increasing N application rates. The optimal range of N application was approximately 145–185.83 kg ha−1 for Kennebec and approximately 93.44–288.67 kg ha−1 for Shepody according to the processing quality standards of French fried potatoes in China. To achieve the goals of high yield and high quality, N application rates should be 150 kg ha−1for Kennebec and 225 kg ha−1 for Shepody.

Rate and timing of nitrogen fertilization of Russet Burbank potato: Yield and processing quality

2004 ◽  
Vol 84 (3) ◽  
pp. 855-863 ◽  
Author(s):  
B. J. Zebarth ◽  
Y. Leclerc ◽  
G. Moreau ◽  
E. Botha
Keyword(s):  
Specific Gravity ◽  
Tuber Yield ◽  
Russet Burbank Potato ◽  
N Fertilization ◽  
Tuber Size ◽  
Processing Quality ◽  
Fertilizer N ◽  
N Application ◽  
Fry Colour ◽  
Tuber Specific Gravity

Split fertilizer N application is thought to improve fertilizer N use efficiency of potato, primarily by reducing NO3 leaching losses. This study evaluated the effects of the rate and timing of N fertilization on yield and processing quality of Russet Burbank potato under rain-fed production. Trials conducted in 1999–2001 included different fertilizer N rates (0–160 kg N ha-1 in 1999 and 0–200 kg N ha-1 in 2000 and 2001) applied either at planting according to normal grower practice, or at hilling, the latest time that granular fertilizer can practically be applied. Tuber total and marketable yield, size distribution, specific gravity, fry colour and tuber concentrations of NO3, sucrose and glucose were measured. Increasing rates of N fertilization increased tuber yield and tuber size, increased tuber NO3 concentration and decreased tuber specific gravity, but had little effect on tuber sugar concentrations or fry colour. Season-to-season variations in total tuber yield responses to N fertilization rate were attributed primarily to variation in soil N supply. Timing of N application had little effect on tuber yield, size distribution or processing quality under adequate soil moisture conditions. However, under dry soil conditions, split N application reduced tuber yield and tuber size. Key words: Solanum tuberosum, tuber specific gravity, tuber nitrate concentration, fry colour

scholarly journals Evaluation of Potato (Solanum tuberosum L.) Varieties for Yield and Some Agronomic Traits

2020 ◽  
Vol 5 (1) ◽  
pp. 63-74
Author(s):  
Lemma Tessema ◽  
Wassu Mohammed ◽  
Tesfaye Abebe
Keyword(s):  
Specific Gravity ◽  
Dry Matter ◽  
Tuber Yield ◽  
Block Design ◽  
Matter Content ◽  
Tuber Quality ◽  
Dry Matter Content ◽  
Marketable Tuber ◽  
Potato Varieties ◽  
Central Highlands

AbstractA field experiment was conducted in the central highlands of Ethiopia to evaluate the performance of potato varieties for tuber yield and to identify a superior variety in tuber yield and yield components. The experiment was laid out in a randomized complete block design with three replications at two locations in the central highlands of Ethiopia during the 2017 main cropping season. The results of analysis of variance (ANOVA) showed the presence of highly significant (P<0.01) differences among varieties over all traits studied. The mean squares for location were also significant in indicating the influence of environments on the traits of the studied varieties. However, the interaction between variety and environment had no significant effect on the performances of the potato varieties to attain 50% flowering, specific gravity and dry matter content indicating a similar performance of these traits across all locations. The variety Belete produced the maximum total tuber yield of 32.8 t ha -1 and marketable tuber yield of 29.1 t ha-1. Conversely, farmers` variety Nech Abeba produced the minimum total tuber yield of 13.8 t ha-1 and marketable tuber yield of 8.4 t ha-1. For most tuber quality traits, viz., tuber specific gravity, dry matter content, starch percentage and total starch yield, varieties Belete and Menagesha were the maximum and minimum producers, respectively. Thus, it could be concluded that varietal and environmental variations as well as their interaction had considerable influence on tuber yield and the potato’s attributes.

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