scholarly journals Effect of Colletotrichum coccodes on Potato Yield, Tuber Quality, and Stem Colonization During Spring and Autumn

Plant Disease ◽  
1999 ◽  
Vol 83 (6) ◽  
pp. 561-565 ◽  
Author(s):  
Leah Tsror (Lahkim) ◽  
Orly Erlich ◽  
Marina Hazanovsky
Keyword(s):  
Vascular Tissue ◽  
Potato Yield ◽  
Potato Cultivars ◽  
Colletotrichum Coccodes ◽  
Tuber Quality ◽  
Yield Losses ◽  
Inoculation Methods ◽  
Significant Yield ◽  
Potato Crops

The response of five potato cultivars to Colletotrichum coccodes was tested in artificially inoculated fields for three consecutive spring and autumn seasons during 1994 to 1996. Significant yield reductions (22 to 30%) were observed in all tested cultivars. Results varied between years, but yield losses were more severe in autumn than in spring. Stem infections of plants were observed 90 days after planting on the surface of the stem and in vascular tissue. C. coccodes inoculation also resulted in reduction of the quality of daughter tubers. Cultivars Cara and Nicola were found to be less susceptible to tuber infection than Alpha, Desiree, and Agria. The incidence of diseased daughter tubers was higher when the soil was infested than when the foliage was inoculated. C. coccodes contamination of dry stems at harvest (in inoculated plots) was relatively high in all cultivars, with no difference between inoculation methods. Thus, C. coccodes infection not only affects potato yield and the quality of potatoes for seed and consumption, but also contaminates soil and serves as an important source of inoculum for future potato crops.

scholarly journals TUBER QUALITY OF VERY EARLY POTATO CULTIVARS IN RESPONSE TO TITANIUM FOLIAR APPLICATION

2018 ◽  
Vol 17 (3) ◽  
pp. 17-28
Author(s):  
Krzysztof Kalinowski ◽  
Wanda Wadas ◽  
Izolda Borysiak-Marciniak
Keyword(s):  
Foliar Application ◽  
Potato Cultivars ◽  
Tuber Quality ◽  
Early Potato

scholarly journals Quality of New Potatoes (Solanum tuberosum L.) in Response to Plant Biostimulants Application

Agriculture ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 265
Author(s):  
Wanda Wadas ◽  
Tomasz Dziugieł
Keyword(s):  
Crop Production ◽  
Solanum Tuberosum L ◽  
Starch Content ◽  
Ascorbic Acid Content ◽  
Weather Conditions ◽  
Fulvic Acids ◽  
Potato Cultivars ◽  
Control Treatment ◽  
Tuber Quality

Background: In sustainable crop production focusing on high-value products, biostimulants have been gaining increasing importance, thus the hypothesis that plant biostimulants could contribute to improving new potatoes quality; Methods: The effects of the seaweed extracts Bio algeen S90 (Ascophyllum nodosum) and Kelpak SL (Ecklonia maxima), as well as the humic and fulvic acids in HumiPlant (leonardite extract) on the tuber quality of very early potato cultivars (‘Denar’, ‘Lord’, ‘Miłek’) were investigated. Potatoes were harvested 75 days after planting (the end of June); Results: The biostimulants did not affect dry matter, protein, total sugars, monosaccharides and sucrose or L-ascorbic acid content in new potatoes. Bio-algeen S90 increased the starch content in tubers of all potato cultivars tested, on average, by 4.8 g∙kg−1 compared with control treatment without biostimulant, whereas Kelpak SL and HumiPlant reduced nitrates content only in tubers of ‘Denar’ cultivar, on average, by 8.50 mg∙kg−1, and increased ascorbate-nitrate index (IAN) by 0.29. The biostimulants did not affect potato after-cooking darkening. Both the nutritional value of new potatoes and after-cooking darkening depended on the cultivar and weather conditions during the potato growing period to a great extent; Conclusions: Plant biostimulants slightly affected quality of new potatoes.

scholarly journals Effect of nonwoven polypropylene covers on early tuber yield of potato crops

2011 ◽  
Vol 51 (No. 5) ◽  
pp. 226-231 ◽  
Author(s):  
R. Jabłońska-Ceglarek ◽  
W. Wadas
Keyword(s):  
Dry Matter ◽  
Tuber Yield ◽  
Research Study ◽  
Potato Yield ◽  
Yield Variability ◽  
Early Date ◽  
Cultivation Method ◽  
Cold Spring ◽  
Potato Crops

In this six-year research study the effect of nonwoven polypropylene covering on the quantity and quality of early potato yield was estimated. The use of nonwoven polypropylene covers resulted in an increase in the tuber yield and smaller yield variability in the various years, when compared with the traditional cultivation, especially at a very early date of potato harvest. In the cultivation with nonwoven polypropylene covering, the marketable tuber yield 60 days after planting was higher by 23.34% on average and 75 days after planting by 10.92% in the six-year period of the study, compared with the cultivation with no plant covering. The higher profitable effect of covering was obtained in the years with cold spring. The cultivation method of the potato did not affect the chemical composition of the tubers harvested after 60 days from planting. After 75 days from planting the tubers of potato cultivated under nonwoven polypropylene covers contained, on average, more dry matter and starch by 0.81% and 0.85%, respectively.

scholarly journals DISTRIBUTION OF PCN PATHOTYPES IN POLAND

2019 ◽  
pp. 3-8
Author(s):  
Anna Przetakiewicz
Keyword(s):  
Potato Production ◽  
Globodera Rostochiensis ◽  
Soil Samples ◽  
Potato Cultivars ◽  
Globodera Pallida ◽  
European Countries ◽  
Regional Survey ◽  
Potato Crops ◽  
Starch Potato

Both Globodera rostochiensis (Wollenweber, 1923) Behrens, 1975 and Globodera pallida (Stone, 1973) are considered the most economically important nematode pest. Annual regional survey conduct in Poland have revealed high infestation of pathotype Ro1 to the northwest of the country and presence of new pathotype Ro5 of G. rostochiensis. In 2009-2013 fifty eight soil samples were tested. parasitic root organisms cause significant losses in quantity and quality of potato crops. In many European countries PCN have become a major problem in potato production mainly in starch potato cultivars. The pathotype Ro1 was detected mostly in central and northern Poland and pathotype Ro5 in four separated provinces: malopolskie, lubuskie, lubelskie and pomorskie. The abundance of cysts in location where the new pathotype was detected suggests that is a thread of further spread of pathotype Ro5 of G. rostochiensis in the country. Consequently, producers and farmers need to grow resistant potato cultivars to keep nematode population below damaging level. These results indicate the urgent need to prevent the spread of PCN to non-infested areas. This report focused on identification of nematode pathotypes in soil samples from infested polish fields and presentation of G. rostochiensis distribution on territory of Poland.

scholarly journals Screening for PVYN-Wi Resistance in Kenyan Potato Cultivars

2021 ◽  
Author(s):  
John Onditi ◽  
Moses Nyongesa ◽  
René van der Vlugt
Keyword(s):  
Resistance Genes ◽  
Severe Infection ◽  
Potato Cultivars ◽  
Post Inoculation ◽  
Yield Losses ◽  
Pvy Resistance ◽  
Screening Experiments ◽  
Prevalent Strain ◽  
Potato Crops ◽  
Resistant Genotypes

AbstractOver the past decades, two new strains of potato virus Y (PVYN-Wi (Wilga) and PVYNTN) have been the most widely distributed worldwide in potato crops (Solanum tuberosum L.). Effective resistance genes comprehensive against all the known strains of the virus are available in some commercial cultivars. However, not all resistance genes in cultivars have been challenged by the new PVY strains to confirm effectiveness of the resistances available. This study was set to identify PVY resistant genotypes and estimate yield losses in potato cultivars in Kenya. PVYN-Wi was used for PVY resistance screening because it was the most prevalent strain in Kenya and also was found to produce more severe infection in Kenyan potato genotypes compared with PVYO (the second most prevalent strain). Three cultivars, Kenya Karibu, Sherekea and Unica, were identified as resistant because they did not get PVY infections over three seasons of both greenhouse and field screening experiments. In addition, two early generation breeding clones were identified as resistant at 28 days post-inoculation. In susceptible cultivars Dutch Robyjn, Nyayo and Kenya Mpya, PVYN-Wi infection caused yield losses of 21.6, 39.0 and 53.1%, respectively, after three seasons. This study demonstrated the necessity to screen for PVY resistance based on the most prevalent PVY strains and to make an informed decision on the usefulness of current levels of resistance in potato cultivars.

scholarly journals Impact of heat and drought stresses on size and quality of the potato yield  

2017 ◽  
Vol 63 (No. 1) ◽  
pp. 40-46 ◽  
Author(s):  
Rykaczewska Krystyna
Keyword(s):  
Heat Stress ◽  
Drought Stress ◽  
Solanum Tuberosum L ◽  
Potato Yield ◽  
Potato Cultivars ◽  
Temperate Climate ◽  
Potato Plants ◽  
The World ◽  
The Impact

Potato (Solanum tuberosum L.) is a plant typical mainly for temperate climate and develops best at about 20°C. Heat stress due to increased temperatures is an agricultural problem in many areas in the world. The aim of our work was to assess the response of selected new potato cultivars to heat and drought stress during the subsequent stages of plant growth starting from buds forming. The pot experiment was carried out over the course of two years with the following early cultivars: Lord, Miłek, Gwiazda, Hubal, Oberon and Tetyda. The impact of heat (38°C/25°C) and drought stress on potato plants was tested in four periods of two weeks. In these periods half of the plants were watered to a level close to optimal while the other half remained without irrigation. Our studies demonstrated that tested potato cultivars’ response to heat stress depends on the growth stage, in which the temperature acts on the plants and on the soil moisture. Besides the decrease in yield and tubers’ diminution, the biggest problem was the presence of tubers with physiological defects, particularly of immature tubers. The response of cultivars was differentiated.

scholarly journals DIFFERENT TECHNIQUES FOR DIAGNOSTIC OF POTATO VIRUSES: A BRIEF REVIEW

2016 ◽  
Vol 1 (3) ◽  
pp. 123
Author(s):  
Misbah I. Qamar ◽  
Sana Batool ◽  
Wajid Aurangzeb ◽  
Rimsha Zainab ◽  
Sapna Menghwar
Keyword(s):  
Potato Crop ◽  
Abiotic Factors ◽  
Review Article ◽  
Yield Reduction ◽  
Human Consumption ◽  
Food Crops ◽  
Yield Losses ◽  
Potato Viruses ◽  
Significant Yield ◽  
Potato Crops

Potato is ranked fourth among the food crops and fifth for human consumption. It provides more yield as compared to cereals and gives more calories. Fungal, viral, thyroid, bacteria, nematode, phytoplasmas and abiotic factors play a pivotal role in yield reduction of potato crop. 38 different potato viruses naturally infect potato crops and PVA, PVM, PVS, PVX, PVY, PLRV and PMTV are reported in three consecutive potato crop of Pakistan. Increasing incidence of PVX and PVY in main potato growing areas of is getting an alarming position and PLRV has caused significant yield losses. The present review article demonstrates different techniques for identification and detection of these viruses..

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