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.

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 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.

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 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.

scholarly journals Effects of short periods of long days on the development, yield and size distribution of potato tuber.

1988 ◽  
Vol 36 (1) ◽  
pp. 11-22 ◽  
Author(s):  
P.C. Struik ◽  
E. van Heusden ◽  
K. Burger-Meijer
Keyword(s):  
Size Distribution ◽  
Early Stage ◽  
Day Treatment ◽  
Tuber Size ◽  
Tuber Initiation ◽  
Prolonged Treatment ◽  
Tuber Growth ◽  
Tuber Development ◽  
Tuber Size Distribution ◽  
Long Day

Experiments were carried out to study the effects of short periods (12 or 16 cycles) of long days (24 h) on the development of stolons and tubers, and on the yield and tuber size distribution of potato cv. Bintje. Treatments initiated at an early stage of growth delayed tuber initiation but stimulated stolon elongation and stolon branching, thus increasing the number of tuber incipients. Later treatments merely delayed tuber set or tuber growth. Short treatments did not affect total tuber yield. A prolonged treatment (48 days) increased the yield in 1 of the 3 experiments. Because of these effects on stolon and tuber development, early treatments caused a shift towards smaller tubers, most pronounced when such a treatment was short. In a experiment in which physiologically old seed was used, av. tuber size was increased when the long-day treatment was initiated later. With optimally peforming seed, av. tuber size showed an optimum when the treatment was initiated just prior to or during tuber initiation. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Relationship between Visual Injury from Synthetic Auxin and Glyphosate Herbicides and Snap Bean and Potato Yield

2014 ◽  
Vol 28 (4) ◽  
pp. 671-678 ◽  
Author(s):  
Jed B. Colquhoun ◽  
Daniel J. Heider ◽  
Richard A. Rittmeyer
Keyword(s):  
Size Distribution ◽  
Crop Yield ◽  
Total Yield ◽  
Application Rate ◽  
Potato Yield ◽  
Tuber Size ◽  
Target Movement ◽  
Snap Bean ◽  
Tuber Size Distribution ◽  
The Relationship

Agronomic crops with resistance to the herbicides dicamba and 2,4-D are currently in the regulatory approval process. The potential increased use of these herbicides has raised concern among vegetable producers about potential off-target movement and implications to crop yield. The overall goal of this research was to describe the relationship between visually estimated crop injury and snap bean and potato yield and quality. In snap bean in 2011, injury from dicamba 7 d after treatment (DAT) ranged from 19% at the 1.2 g ae ha−1application rate to 45% at the 7.0 g ae ha−1application rate. By 28 DAT in 2011, injury from 2,4-D was similar to the nontreated control. However, early-season injury in 2011 delayed snap bean flowering and reduced crop yield compared to the nontreated control for all treatments except where the 1.4 g ae ha−1rate of 2,4-D and glyphosate at 7.0 g ae ha−1were applied. Snap bean injury from dicamba was greater than that from 2,4-D at all rating timings in 2011 and two of three rating timings in 2012, and crop yield was reduced compared to where 2,4-D was applied and the nontreated control in both years. Potato tuber size distribution was variable and total yield did not differ among treatments and the nontreated control in 2011. In 2012, tuber size distribution was again variable, but more nonmarketable cull potatoes were harvested when dicamba was applied to 25-cm potato plants at the 7.0 g ae ha−1rate compared to any other treatment. Snap bean injury observations about 3 wk prior to harvest were strongly correlated with crop yield (r= −0.84 and −0.88 in 2011 and 2012, respectively), allowing time to make informed harvest decisions relative to crop quality. In contrast, the relationship between potato injury and tuber yield was poor and highly variable in both years.

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

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