Effects of salinity and its interactions with disease incidence on potatoes grown in hot climates

Nachmias, A.; Kaufman, Zalman; Livescu, L.; Tsror, Leah; Meiri, A.; Caligari, P. D. S.

doi:10.1007/bf02980946

Cited by 36 publications

(28 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Exposure to environmental stresses such as this should have weakened plants and made them more susceptible to infection. Evidence from the agricultural literature suggests that many fungal pathogens are highly tolerant of salts in culture (Tresner and Hayes 1971) and that irrigation with salt solutions can increase the incidence and/or severity of infection associated with a variety of plant pathogens including species of Fusarium (Turco et al 2002;TrikyDotan et al 2005), Phytophthora (MacDonald 1984;Blaker and Macdonald 1986;Swiecki and Macdonald 1991;Sanogo 2004), Pythium (Rasmussen and Stanghellini 1988), and Verticillium and Alternaria (Nachmias et al 1993) (but see Elmer 1992;Brac De La Perriere et al 1995;Elmer 1997Elmer , 2002. The fact that the opposite pattern was documented suggests that mechanisms that reduce infection rates must have acted in opposition to these two factors to produce the observed patterns of disease.…”

Section: Discussionmentioning

confidence: 97%

Soil calcium and plant disease in serpentine ecosystems: a test of the pathogen refuge hypothesis

2006

View full text Add to dashboard Cite

Ecologists have long sought mechanistic explanations for the patterns of plant distribution and endemism associated with serpentine soils. We conducted the first empirical test of the serpentine pathogen refuge hypothesis, which posits that the low levels of calcium found in serpentine soils provide associated plants with a refuge from attack by pathogens. We measured the range of soil calcium concentrations experienced by 16 wild population of California dwarf flax (Hesperolinon californicum) and experimentally recreated part of this range in the greenhouse by soaking serpentine soils in calcium chloride solutions of varying molarity. When flax plants grown in these soils were inoculated with spores of the rust fungus Melampsora lini we found a significant negative relationship between infection rates and soil calcium concentrations. This result refutes the pathogen refuge hypothesis and suggests that serpentine plants, by virtue of their association with low calcium soils, may be highly vulnerable to attack by pathogens. This interaction between plant nutrition and disease may in part explain demographic patterns associated with serpentine plant populations and suggests scenarios for the evolution of life history traits and the distribution of genetic resistance to infection in serpentine plant communities.

show abstract

Section: Discussionmentioning

confidence: 97%

Soil calcium and plant disease in serpentine ecosystems: a test of the pathogen refuge hypothesis

2006

View full text Add to dashboard Cite

show abstract

“…In our experiments, fertilizer was broadcast prior to bed formation, which reduces the salt concentration near the seed pieces. In other regions, salt injuries have been attributed to both excess fertilizer salts (Cao & Tibbits, 1991) and to the use of saline irrigation waters (Levy, 1992;Nachmias et al, 1993).…”

Section: Discussionmentioning

confidence: 99%

Fertilizer management impacts on stand establishment, disease, and yield of Irish potato

Crozier¹,

Creamer

Cubeta³

2000

Potato Res

View full text Add to dashboard Cite

SummaryExcessive fertilizer application in North Carolina, USA results in high residual soil levels of P, K and total soluble salts in potato fields. Our objectives were to determine the salt sensitivity of three common cultivars (Atlantic, Snowden and Superior), and the effects of planting density and fertilization on stand establishment, soilborne disease, and yield. Greenhouse results suggest that potato growth and emergence, but not shoot initiation, are reduced by high salinity. On a Portsmouth fine sandy loam, high fertilizer rates did not reduce stands of cv. Atlantic in the field in 1996 or 1997. Excess N resulted in more Rhizoctonia stem canker in 1996, and lower yields at the lower planting density in 1997. Yield compensation for reduced plant density occurred in 1997 at the lower N rates (56 and 112 kg N ha -l) and at the high PK rate (49 kg P and 139 kg K ha-l).

show abstract

“…Varios trabajos sugieren que las fusariosis de las plantas pueden agravarse por efecto de los riegos con agua salina (Jones et al, 1993;Nachmias et al, 1993;Sivan y Chet, 1993;Woltz et al, 1992;TrikyDotan et al, 2005). Otros sugieren lo contrario, es decir, que la salinidad en el agua de riego disminuye la enfermedad (De la Perriere et al, 1995;Elmer, 1997Elmer, , 2002Elmer, , 2003Elmer y La Mondia, 1999).…”

Section: Relación Entre La Calidad Del Agua Y La Incidencia Del Sunclassified

“…El efecto sobre la expresión de otras enfermedades ha sido puesto de manifiesto para otros patógenos. Así, para Phytophthora (Swiecki y MacDonald, 1991); Rhizoctonia (Elmer y LaMondia, 1999); Verticillium dahliae y Alternaria solani (Nachmias et al, 1993y Pellicer et al, 1998; Pythium (Rasmussen y Stanghellini, 1988).…”

Section: Relación Entre La Calidad Del Agua Y La Incidencia Del Sunclassified

Un síndrome asociado a Fusarium oxysporum y a la salinidad del agua de riego que causa la muerte de plantas de tomate en Almería (Sureste de España)

Boix-Ruíz¹,

Fernández-Morenate²,

Cara³

et al. 2014

Idesia

View full text Add to dashboard Cite

Un síndrome asociado a Fusarium oxysporum y a la salinidad del agua de riego que causa la muerte de plantas de tomate en Almería (Sureste de España) RESUMENDurante 2002 a 2007 se evaluaron plantas de tomate cv Marmande Raf en el campo de Níjar (Almería) que mostraban el siguiente síndrome: marchitez en verde que alcanzaba a todas las hojas. Clorosis intensa del follaje terminando por secarse. Raíces, salvo excepciones, sin podredumbres y cuando estas aparecían eran localizadas. El xilema se mostraba teñido, en su totalidad, de color marrón intenso. Las plantas terminaban por morir. El análisis del xilema de 1.392 plantas exteriorizó Fusarium oxysporum en más del 59%. Las curvas de la gravedad de síndrome evocaban a las de las micosis causadas por F. oxysporum f. sp. lycopersici o por F. oxysporum f. sp. radicis-lycopersici. La presencia del síndrome en los 17 predios de cultivo evaluados alcanzó hasta el 53,12% de las plantas. Cuando se evaluó, la patogenicidad de 65 plantas aisladas de F. oxysporum ninguna de ellas expresó síntomas. En la zona muestreada el agua de riego utilizada es altamente salina. Así, en 6 pozos estudiados las concentraciones de Na + oscilaron entre 51,48 y 205,96 meq·L -1 , las de Cl -entre 14,53 y 108,53 meq·L -1 , y la CE entre 0,55 y 10,1 dS·m -1 y la Relación de Absorción de Sodio (SAR) entre 15,93 y 48,20. Las correlaciones calculadas para la gravedad del síndrome y la salinidad del agua de riego, en 6 invernaderos, oscilaron entre R 2 = 0,867 para la CE, y R 2 = 0,8943 para la concentración de Cl -. Los resultados sugieren que la salinidad del agua de riego pudo estar en la causalidad del síndrome observado, pero no explican el papel de Fusarium oxysporum en el xilema y en las raíces.Palabras clave: monocultivo, desinfección del suelo, invernadero, sodificación. ABSTRACT A syndrome associated to Fusarium oxysporum and irrigation water salinity causing death of tomato plants in Almería (Southeaster Spain

show abstract

Effects of salinity and its interactions with disease incidence on potatoes grown in hot climates

Cited by 36 publications

References 20 publications

Soil calcium and plant disease in serpentine ecosystems: a test of the pathogen refuge hypothesis

Soil calcium and plant disease in serpentine ecosystems: a test of the pathogen refuge hypothesis

Fertilizer management impacts on stand establishment, disease, and yield of Irish potato

Un síndrome asociado a Fusarium oxysporum y a la salinidad del agua de riego que causa la muerte de plantas de tomate en Almería (Sureste de España)

Contact Info

Product

Resources

About