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

scholarly journals Genetic mapping of tuber size distribution and marketable tuber yield under drought stress in potatoes

Euphytica ◽  
2019 ◽  
Vol 215 (11) ◽  
Author(s):  
Ernest B. Aliche ◽  
Marian Oortwijn ◽  
Tom P. J. M. Theeuwen ◽  
Christian W. B. Bachem ◽  
Herman J. van Eck ◽  
...  
Keyword(s):  
Size Distribution ◽  
Tuber Yield ◽  
Total Yield ◽  
Tuber Size ◽  
Tuber Number ◽  
Marketable Yield ◽  
Yield Attributes ◽  
Marketable Tuber ◽  
Tuber Size Distribution ◽  
Drought Effects

Abstract Drought sensitivity of potato leads to a reduction in total tuber yield and marketable yield. An investigation of drought effects on tuber yield attributes will facilitate our understanding of how to reduce such huge yield losses. We have evaluated tuber yield, tuber size distribution and marketable yield of a set of 103 European commercial potato cultivars under irrigated and non-irrigated conditions in the field. The multi-year results from two locations, Connantre, France (2013–2015) and Nieuw-Namen in Zeeland, The Netherlands (2013–2014), were analysed. We used Normal and Gamma Distribution models to describe the tuber size distribution of tuber fresh weight and tuber number, respectively. The interactions among parameters of tuber size distribution and total/marketable tuber yield traits were analysed using correlation matrices and biplots. Finally, we used a 14K Infinium SNP marker array to find associations between the parameters or traits and genetic loci on the potato genome. Late foliage maturity facilitated a wider spread of tuber size distribution in favour of larger-sized tubers. Drought effects on total yield were representative of their impact on marketable yield, however, absolute values of total tuber number may not be indicative of marketable number of tubers. We found significant marker-trait associations between a region on chromosome 3 and the spread of tuber number distribution, size class with maximum tuber number and marketable fractions of tuber number and tuber weight. These findings will contribute to improvement and selection for drought tolerance in potato.

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.

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.

Competition between Potatoes (Solarium tuberosum) and Weeds

Weed Science ◽  
1981 ◽  
Vol 29 (6) ◽  
pp. 672-677 ◽  
Author(s):  
D. C. Nelson ◽  
Myron C. Thoreson
Keyword(s):  
Solanum Tuberosum ◽  
Specific Gravity ◽  
Deleterious Effect ◽  
Tuber Yield ◽  
Tuber Size ◽  
Solarium Tuberosum ◽  
Weed Competition ◽  
Dry Biomass ◽  
Potato Yields ◽  
Annual Weeds

Mixtures of annual weeds emerging 1 week after and competing all season with potatoes (Solanum tuberosumL.) reduced tuber yields by an average of 54% compared to 16% in comparable treatments in which weeds emerged 3 weeks after potatoes. Weeds reduced tuber yields 19% 8 weeks after potatoes emerged and 25 to 45% 10 weeks after emergence. After full-season competition, for each additional 10% of the total dry biomass represented by weeds, there was a decrease of 12% in fresh tuber yield. This relationship was not valid if potatoes were harvested early, which reduced the deleterious effect of weeds on potato yields. Weed competition reduced both size and number of tubers, but had little effect on specific gravity of tubers. In some instances, the reduction in tuber size by weeds reduced the percentage of tubers that were marketable.

Pelletized organo-mineral fertilizer product as a nitrogen source for potato production

2005 ◽  
Vol 85 (3) ◽  
pp. 387-395 ◽  
Author(s):  
B J Zebarth ◽  
R. Chabot ◽  
J. Coulombe ◽  
R R Simard ◽  
J. Douheret ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Size Distribution ◽  
Tuber Yield ◽  
Mineral Fertilizer ◽  
Potato Production ◽  
Quality Parameters ◽  
Fertilizer N ◽  
N Content ◽  
Total N ◽  
N Source

Replacement of mineral fertilizer with organo-mineral fertilizer products made with animal manures is one strategy for reducing the environmental impact of agricultural production. This study evaluated a pelletized organo-mineral fertilizer product with a nutrient analysis of approximately 7-4-4 produced from composted solid poultry, solid dairy and liquid hog manure as a N source for processing potato (Solanum tuberosum L.) production in Atlantic Canada. The availability of N in the organo-mineral fertilizer product was estimated, and tuber yield, size distribution and quality parameters and soil NO3-N content at harvest were compared at similar application rates of N as mineral or organo-mineral fertilizer. Field trials were conducted in 2000 to 2002 to compare different rates of mineral (0–200 kg N ha-1 as NH4NO3) or organo-mineral (0–3 t product ha-1) fertilizer band-applied at planting, followed by split applications of variable rates of mineral fertilizer. Apparent recovery of N from the mineral fertilizer, estimated as the slope of the regression of plant N accumulation against the rate of N applied and expressed as a percentage, was 65, 33 and 78% in 2000, 2001 and 2002, respectively. Apparent recovery of total N in the organo-mineral fertilizer was 6 0 , 26 and 57% in 2000, 2001 and 2002, respectively. Fertilizer N equivalency of the total N in the organo-mineral fertilizer, estimated as the apparent recovery of organo-mineral fertilizer N divided by apparent recovery of mineral fertilizer N and expressed as a percentage, was 92, 79 and 73% in 2000, 2001 and 2002, respectively. Application of equivalent rates of N as mineral or organo-mineral fertilizer at planting generally resulted in comparable values of tuber yield, size distribution and quality parameters and soil NO3-N content at tuber harvest. We recommend application of 1.5 t ha-1 of organo-mineral fertilizer at planting, with additional mineral fertilizer applied as a split application if warranted, as a suitable N source for processing potato production. Key words: Solanum tuberosum, yield, tuber size, tuber nitrate, tuber specific gravity, soil nitrate

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

scholarly journals Hilling of Transplanted Seedlings from Novel Hybrid True Potato Seeds Does Not Enhance Tuber Yield but Can Affect Tuber Size Distribution

2020 ◽  
Author(s):  
Luuk C. M. van Dijk ◽  
Willemien J. M. Lommen ◽  
Michiel E. de Vries ◽  
Olivia C. Kacheyo ◽  
Paul C. Struik
Keyword(s):  
Size Distribution ◽  
Field Experiments ◽  
Tuber Yield ◽  
Canopy Cover ◽  
Cropping System ◽  
Tuber Size ◽  
Tuber Size Distribution ◽  
Agronomic Conditions ◽  
Final Harvest ◽  
Plot Design

AbstractA novel cropping system for potato was tested for two consecutive years under normal Dutch agronomic conditions. Seedlings from two experimental genotypes of hybrid true potato seeds were produced in a greenhouse nursery and transplanted into the field 5 weeks after sowing to assess tuber yield levels and to study effects of hilling on tuber yield and number, tuber size distribution and tuber greening. Field experiments had a split-plot design with hilling treatments as the main plots and genotypes as the sub-plots. Final harvest was at 122 and 132 days after transplanting in 2017 and 2018, respectively. Hybrid seedlings were transplanted into small initial ridges and irrigated straight after planting. Three hilling treatments were applied between transplanting and 100% canopy cover. Treatment ‘zero hilling’ did not receive any additional hilling after transplanting. Treatments ‘double hilling’ and ‘triple hilling’ received two and three additional hilling treatments, respectively. Total tuber yields at final harvest in both years were not affected by the hilling treatments. Yields for the respective genotypes were 26 and 30 Mg/ha in 2017 and 25 and 32 Mg/ha in 2018. Total tuber numbers were only affected by hilling treatments in 2017, where under hilled conditions, plants produced more tubers compared with plants under zero hilling. Plants under zero hilling yielded more tubers in size class > 40 mm compared with triple hilling in 2017. In 2018, no significant effects of hilling on tuber numbers were found, but the trend was similar to that in 2017.

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