Relationships between tuber size and time of harvest to hollow heart initiation in Dryland Norgold Russet potatoes

1986 ◽  
Vol 63 (3) ◽  
pp. 155-161 ◽  
Author(s):  
D. C. Nelson ◽  
M. C. Thoreson
Keyword(s):  
Hollow Heart ◽  
Tuber Size ◽  
Norgold Russet ◽  
Time Of Harvest

The relationship between tuber size and hollow heart in Norgold Russet potatoes

1979 ◽  
Vol 56 (7) ◽  
pp. 329-337 ◽  
Author(s):  
D. C. Nelson ◽  
M. C. Thoreson ◽  
D. A. Jones
Keyword(s):  
Hollow Heart ◽  
Tuber Size ◽  
Norgold Russet ◽  
The Relationship

scholarly journals “The relationship between tuber size and hollow heart in norgold russet potatoes”

1979 ◽  
Vol 56 (9) ◽  
pp. 439-439
Author(s):  
D. C. Nelson ◽  
M. C. Thoreson ◽  
D. A. Jones
Keyword(s):  
Hollow Heart ◽  
Tuber Size ◽  
Norgold Russet ◽  
The Relationship

Effect of seed tuber and seed piece size on growth and incidence of hollow heart in Norgold Russet potatoes

1982 ◽  
Vol 59 (8) ◽  
pp. 367-373 ◽  
Author(s):  
D. C. Nelson ◽  
M. C. Thoreson
Keyword(s):  
Seed Piece ◽  
Seed Tuber ◽  
Hollow Heart ◽  
Norgold Russet ◽  
Piece Size

Effects of defoliation and time of harvest on tuber dry-matter percentage of Pentland Crown Potatoes

1986 ◽  
Vol 107 (3) ◽  
pp. 723-733 ◽  
Author(s):  
S. J. Wilcockson
Keyword(s):  
Water Uptake ◽  
Dry Matter ◽  
Matter Content ◽  
Tuber Size ◽  
Dry Matter Content ◽  
Mechanical Method ◽  
Tuber Dry Matter ◽  
The Relationship ◽  
Time Of Harvest ◽  
Main Factor

Two experiments are reported which investigated the effects of time and method of crop defoliation and of extending the interval between defoliation and harvest on the relationship between dry-matter percentage and tuber size in Pentland Crown potatoes.Differences in average tuber dry-matter content between seasons and treatments were large, but the relationship between tuber dry-matter percentage and tuber size was always negatively quadratic. The dry-matter content of tubers of all sizes invariably decreased after defoliation, by about 0·6 % on average for each week that harvest was delayed in 1983 and 0·3 % in 1984. The largest decrease was from 22·7 to 16·7 % over the 10-week period following mechanical defoliation in mid-August 1983. In 1984, chemical defoliation in mid-August gave a smaller decrease than the mechanical method (0·25 and 0·38%/week) but their effects were similar when carried out in mid-September. Water uptake was the main factor responsible for the decrease because evidence showed that fresh weights of tubers increased proportionally following defoliation whilst dry weights remained virtually constant.Natural senescence was late in both seasons experiments so that the crops foliage was still mostly alive when defoliation occurred, even in September and early October. Thus, the relatively large effects of late defoliation may have been greater than might be expected where haulm senescence is already well advanced by this time and water uptake has almost ceased. Nevertheless, the decline in dry-matter percentage which may occur between defoliation and harvest can be extremely important where potatoes for processing are concerned. It could make them unacceptable for particular outlets and should be considered when defoliation and harvesting programmes are planned.

Effect of planting date, spacing, and potassium on hollow heart in Norgold Russet potatoes

1970 ◽  
Vol 47 (4) ◽  
pp. 130-135 ◽  
Author(s):  
D. C. Nelson
Keyword(s):  
Hollow Heart ◽  
Planting Date ◽  
Norgold Russet

Effects of variety and date of harvest on the tuber dry-matter percentage of potatoes

1978 ◽  
Vol 90 (3) ◽  
pp. 597-604 ◽  
Author(s):  
D. C. E. Wurr ◽  
J. N. Bean ◽  
E. J. Allen
Keyword(s):  
Dry Matter ◽  
Field Experiments ◽  
Growing Season ◽  
Tuber Size ◽  
Tuber Dry Matter ◽  
Positive Correlations ◽  
Using Data ◽  
Time Of Harvest

SummaryUsing data from four field experiments, comparisons were made between the drymatter percentages of several varieties harvested at different times during the growing season.There were negative quadratic relationships between tuber dry-matter percentage and tuber size in all varieties except Pentland Marble. The dry-matter percentage of particular tuber sizes varied according to the variety and the time of harvest. Failure to recognize the importance of tuber size and the time of harvest may easily distort differences in dry-matter percentage between varieties.There were significant positive correlations between the number of tubers produced by each variety on 25 June and four different variables representing the dry-matter percentage of tubers harvested on 10 September. Varietal maturity, assessed as persistence of the foliage, was not significantly correlated with any tuber dry-matter percentage variable in September.

Relationships between weather, plant spacing and the incidence of hollow heart in Norgold Russet potatoes

1979 ◽  
Vol 56 (12) ◽  
pp. 581-586 ◽  
Author(s):  
D. C. Nelson ◽  
D. A. Jones ◽  
M. C. Thoreson
Keyword(s):  
Hollow Heart ◽  
Norgold Russet ◽  
Plant Spacing

Response of Potato (Solarium tuberosum) Cultivars to Metribuzin

Weed Science ◽  
1984 ◽  
Vol 32 (4) ◽  
pp. 442-444 ◽  
Author(s):  
George H. Friesen ◽  
David A. Wall
Keyword(s):  
Solanum Tuberosum ◽  
Specific Gravity ◽  
Field Experiments ◽  
Hollow Heart ◽  
Tuber Size ◽  
Potato Cultivars ◽  
Solarium Tuberosum ◽  
Susceptible Cultivar

The response of 22 potato (Solanum tuberosumL.) cultivars to soil-incorporated and foliar applications of metribuzin [4-amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4H)one] at rates of 0.5 and 1.0 kg ai/ha, was evaluated in field experiments from 1979 to 1982. Metribuzin significantly reduced the yield of marketable tubers in several potato cultivars. Foliar applications generally resulted in more injury than soil applications. Yields were reduced primarily through stand reduction and a decreased number of tubers per plant. Neither tuber size nor specific gravity of tubers was significantly reduced in the cultivars studied. The most susceptible cultivar was ‘Alaska Red’, followed by ‘Rhine Red’, F72117, ‘Caribe’, and ‘Shepody’. Other cultivars evaluated were highly tolerant to metribuzin, irrespective of rate or method of application. There was an increase in hollow heart in cultivars ‘Atlantic’ and ‘Lemhi Russet’ following treatment with metribuzin.

DEN POBEDY IS THE NEW VARIETY OF APPLE TREE

1970 ◽  
pp. 33-35
Author(s):  
Е. N. Sedov ◽  
T. V. Yanchuk
Keyword(s):  
Apple Tree ◽  
Average Density ◽  
New Variety ◽  
State Register ◽  
Central Chernozem Region ◽  
Great Patriotic War ◽  
Main Color ◽  
Central Chernozem ◽  
Time Of Harvest ◽  
Medium Weight

In 2020, the 75th anniversary of Victory in the Great Patriotic War was celebrated. Many soldiers and did not survive to see the end of the war. It is important that people living now remember and honor those who gave their lives for the freedom and independence of our country and those who came from the war in difficult conditions to restore the national economy of the country. In memory of those who courageously defended the independence of our great country, we named a new apple cultivar ‘Den Pobedy’ (Victory Day), which took 33 years to create. In 2020, this cultivar was included in the State Register of breeding achievements and it is recommended for cultivation in the Central-Chernozem region including Belgorod, Voronezh, Kursk, Lipetzk, Orel and Tambov regions. This cultivar was developed by crossing are quite commonly known winter cultivar ‘Veteran’ and foreign cultivar ‘Horcout’. Trees have a drooping crown. The main branches are curves. A characteristic feature of this cultivar is that the branches from the trunk depart at an angle close to straight. The main number of fruits is located on short fruit formations. Fruits are of medium weight (140 g), conical, wide-ribbed. The main color of the fruit at the time of harvest is greenish. The cover color occupies most of the surface of the fruit in the form of red blush. The fruit flesh is white, greenish of average density. The appearance (attractiveness) of the fruit is estimated at 4.4 points, and the taste - at 4.3 points (5-point rating). Fruits contain 14.7 % of sugars and 9.2 mg/100 g of ascorbic acid (vitamin C). Harvest in Orel region is in mid-September, the consumer period of fruits is until mid-March. The cultivar regularly bears fruit and has high product and consumer qualities.

Time of Harvest and Method of Storage Affect Granulation in Grapefruit

HortScience ◽  
1998 ◽  
Vol 33 (4) ◽  
pp. 728-730 ◽  
Author(s):  
Jacqueline K. Burns ◽  
L. Gene Albrigo
Keyword(s):  
Cell Wall ◽  
Fruit Size ◽  
Tree Age ◽  
Citrus Paradisi ◽  
Marked Accumulation ◽  
Wall Materials ◽  
Time Of Harvest ◽  
Cell Wall Materials

Temporal studies were conducted from mid- to late-harvest season of `Ruby Red' grapefruit (Citrus paradisi Macf.) to evaluate the effect of on- and off-tree storage, fruit size, and juice vesicle position on the development of granulation. Juice vesicle fresh and dry masses were highest at the stem and stylar positions of the fruit section and were not affected significantly by time of harvest or by storage. Juice vesicles isolated from each position were subjectively evaluated for the presence of granulation. Granulation was highest in stylar juice vesicles obtained from large fruit (≈600 g) that were harvested late in the season (March and May) and stored in air at 21 °C for 60 days. Large fruit harvested in March and May and examined immediately, and fruit harvested in January and stored for 60 days had low granulation scores. Thus, fruit remaining on the tree until May are less susceptible to the disorder than those harvested in March and held in storage until May. Levels of alcohol-insoluble solids (AIS), largely composed of pectins and other cell wall materials, were significantly higher in juice vesicles that were granulated. The results suggest that storage itself was not responsible for the marked accumulation of AIS in granulated juice vesicles. Rather, some interaction of fruit size with maturation, as well as other factors such as tree age and rootstock, likely contributed to the development of granulation.

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