Browsing Research Articles (Plant Production and Soil Science) by UP Author "Van der Waals, Jacqueline Elise"
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Browsing Research Articles (Plant Production and Soil Science) by UP Author "Van der Waals, Jacqueline Elise"
Now showing items 1-20 of 22
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Simango, Kenedy; Slabbert, Christopher P.; Van der Waals, Jacqueline Elise (Springer, 2020-06)Spongospora subterranea f. sp. subterranea (Sss) is an obligate parasite that can only multiply within the living tissues of a host plant. To determine the host status of Sss in some of the crops and weeds commonly found ...
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Van der Waals, Jacqueline Elise; Krüger, K.; Franke, A.C.; Haverkort, A.J. (Anton); Steyn, J.M. (Joachim Marthinus), 1963- (European Association for Potato Research, 2013-03)A set of daily weather data simulations for 1961 to 2050 were used to calculate past and future trends in pest and disease pressure in potato cropping systems at three agro-ecologically distinct sites in South Africa: ...
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Muzhinji, Norman; Dube, Joel Prince; De Haan, E.G.; Woodhall, J.W.; Van der Waals, Jacqueline Elise (Springer, 2020-10)Pectobacterium brasiliense (Pb) is one of the causal agents of soft rot and blackleg diseases and has become a pathogen of economic importance in many potato production regions worldwide. Accurate, sensitive and timely ...
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Effect of irrigation on charcoal rot severity, yield loss and colonization of soybean and sunflower Jordaan, Estiene; Van der Waals, Jacqueline Elise; McLaren, Neal W. (Elsevier, 2019-08)Charcoal rot incidence in soybean and sunflower in South Africa is increasing. Irrigation as a means to manage charcoal rot is limited as water resources are decreasing and oil seed production is predominantly on dry land. ...
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Simango, Kenedy; Van der Waals, Jacqueline Elise (Springer, 2017-03)Powdery scab caused by Spongospora subterranea f. sp. subterranea (Sss) causes extensive losses in potato production systems globally. Two pot experiments were established in the greenhouse in summer 2013 and winter 2014 ...
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Kandolo, S.D.; Aveling, T.A.S. (Terry); Van der Waals, Jacqueline Elise; Truter, Mariëtte; Laurie, S.M. (International Society for Horticultural Science, 2018-06)Alternaria blight (AB) of sweet potato caused by Alternaria bataticola, is a limiting factor for sweet potato industries in various countries. The disease has been recently reported in South Africa. A thorough literature ...
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Van der Waals, Jacqueline Elise; Kruger, Kerstin (AOSIS Open Journals, 2020-11-26)Potato is a staple crop that contributes to food security and poverty alleviation in developing nations. Despite this, yields in developing nations are often unsustainably low, due to various biotic and abiotic factors ...
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Ramusi, Tshekgene M.; Van der Waals, Jacqueline Elise; Labuschagne, Nico; Aveling, T.A.S. (Terry) (Taylor and Francis, 2017)Cowpea (Vigna unguiculata) is susceptible to pathogens such as Rhizoctonia solani Pythium ultimum and Fusarium solani causing seedling diseases in cowpea, resulting in low yields. Three commercial synthetic fungicides ...
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Van der Waals, Jacqueline Elise; Steyn, J.M. (Joachim Marthinus), 1963-; Franke, A.C.; Haverkort, A.J. (Anton) (Elsevier, 2016-06)Growers’ surveys took place in all sixteen potato growing regions of South Africa in 2013 and 2014. The agro-ecological climate of these regions is diverse and potato is produced in rainy or dry seasons, in winter or ...
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Lekota, Moleboheng; Muzhinji, Norman; Van der Waals, Jacqueline Elise (Wiley, 2019-08)Powdery scab caused by Spongospora subterranea f. sp. subterranea (Sss) has recently become one of the most devastating potato diseases of economic importance in South Africa. The use of resistant cultivars has long been ...
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Lekota, Moleboheng; Modisane, Kehumile J.; Apostolides, Zeno; Van der Waals, Jacqueline Elise (MDPI Publishing, 2020-05-27)Plants defend themselves from pathogens by producing bioactive defense chemicals. The biochemical mechanisms relating to quantitative resistance of potato to root infection by Spongospora subterranea f. sp. subterranea ...
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Zimudzi, Josephine; Coutinho, Teresa A.; Van der Waals, Jacqueline Elise (Springer, 2017-06)Potato skin blemishes with known causes (typical blemishes) are manageable in contrast to those with unknown causes (atypical blemishes). This study investigated possible fungal causal agents of atypical tuber blemishes ...
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Mushonga, Knowledge; Steyn, J.M. (Joachim Marthinus), 1963-; Swart, Wijnand J.; Van der Waals, Jacqueline Elise (Wiley Open Access, 2020-12)Plant–soil feedbacks (PSFs) give a mechanistic understanding on how soil properties established by previous plant species go on to influence the performance of the same or different species in monoculture, intercropping ...
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Muzhinji, Norman; Woodhall, J.W.; Truter, Mariëtte; Van der Waals, Jacqueline Elise (Elsevier, 2016-05)Rhizoctonia solani AG 3-PT is an important potato pathogen causing significant yield and quality losses in potato production globally. However, little is known about the levels of genetic diversity and population structure ...
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Kruger, Kerstin; Van der Waals, Jacqueline Elise (AOSIS Open Journals, 2020-11-26)Potato has increased in importance as a staple food in sub-Saharan Africa, where its production is faced with a multitude of challenges, including plant disease development and spread under changing climatic conditions. ...
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Muzhinji, Norman; Woodhall, James W.; Truter, Mariëtte; Van der Waals, Jacqueline Elise (American Phytopathological Society, 2018-01)Understanding the contribution of seed tuber- and soilborne inocula of Rhizoctonia solani AG 3-PT in causing potato disease epidemics is an important step in implementing effective management strategies for the pathogen. ...
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Steyn, J.M. (Joachim Marthinus), 1963-; Franke, A.C.; Van der Waals, Jacqueline Elise; Haverkort, A.J. (Anton) (Elsevier, 2016-12)Potato, the most important vegetable crop in South Africa, is produced in many distinct geographical regions differing in climate, soils, production seasons and management practices and access to markets. These differences ...
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Mbedzi, P.P.; Van der Hoven, L.; Vorster, Barend Juan; Van der Waals, Jacqueline Elise (Elsevier, 2019-11)Sclerotinia sclerotiorum (Lib.) de Barry, causal agent of Sclerotinia stem rot of soybeans, is one of the pathogens that could have a potentially devastating impact on the growth of the soybean industry in South Africa. ...
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Theron, Eksteen; Bophela, K.N.; Bisschoff, J.; Shin, Gi Yoon; Coutinho, Teresa A.; Van der Waals, Jacqueline Elise (Springer, 2023-09)Pectobacterium and Dickeya species are pathogens of increasing importance on potatoes worldwide. These Soft Rotting Pectobacteriaceae (SRP) cause soft rot, blackleg, and aerial stem rot of tubers and plants, which can lead ...
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Zimudzi, Josephine; Van der Waals, Jacqueline Elise; Coutinho, Teresa A.; Cowan, Don A.; Valverde, Angel (Elsevier, 2018-06)Soil fungal communities perform important ecological roles determining, at least in part, agricultural productivity. This study aimed at examining the fungal community dynamics in the potato rhizosphere across different ...
Now showing items 1-20 of 22