PDF | Intraspecific groups among isolates of Alternaria solani from tomato and potato and from Brazil, China, Cuba, United States, Greece and Turkey, were. Seis clones de papa, seleccionados por su resistencia in vitro al filtrado de cultivo de Alternaria solani Sor. se evaluaron para determinar su respuesta de. Se recogen los resultados de las investigaciones realizadas sobre el tizón temprano en papa, Alternaria solani Sor. durante 20 campañas del cultivo.

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Enzymatic analysis Leaf samples were taken from the plotstreated 59 days after solank, just before inoculation with the fungus. Leaf necrosis development was influenced by its position on the plant age as expected for A. Timing of fungicide sprays relative to environmental conditions and subsequent potential for disease development is critical if good control is to be attained.

In mild climates the pathogen can survive from season to season on volunteer tomato and potato plants as well as other weedy Solanaceous hosts such as horsenettle and nightshade. Effects of inoculum concentration, wetness duration and plant age on development of early blight Alternaria solani and on shedding of leaves in tomato plants.

Read label for application. Controlling volunteers and weeds, such as nightshade and horsenettle which serve as alternative hosts for the disease, prior to planting the new crop will help to reduce the risk of transmission of disease. These isolates show significantly reduced levels of sensitivity to the QoI fungicides Pasche and Gudmestad, Stewart’s wilt of corn.

Zonificación de Alternaria solani en papa en la provincia de La Habana. [1998]

Subsequently, samples at 1, 7 and 10d post-inoculation for the enzymatic dynamics Table 2. Audible Download Audio Books.


The enzyme CHIT showed no significant differences in none of the treatment at 0d, nor elicited at 24h after inoculations of the pathogen data not shownand in general at none of the times evaluated. However, these values are only for reference because they were the result of a block, the others were damaged at harvest by ants. These spots will look like concentric rings. Cashback will be credited as Amazon Pay balance within 10 days.

Vloutoglou, I and S. The favorable effect of MVA on tomato yield is well known under Cuban field conditions 25 as well as in reducing infection ppapa A.

Lethal yellowing of palm. Good air flow will help keep the plants dry. Biometrie und Populations genetik.

The tomato was initially considered a horticultural crop, but the development of the food processing industry and its appetite for large quantities of cheaply produced tomatoes led to the development of large-scale field production of tomatoes particularly in the US. Secondary spread of the disease results from conidia being dispersed mainly be wind and occasionally by splashing rain or overhead irrigation.

Estimating total annual crop losses to any one particular disease is difficult to do accurately. Early blight of potato and tomato. Only in ASM-spirulina and spirulina-mycorrhizas treatments, the differences were significant Fig. Leaf damage were determined by two recommended methods for this plant-pathogen interaction This time was considered time 0.

Se estudiaron siete tratamientos: Use of disease forecasting programs such as FAST in tomatoes and P-DAY in potatoes to correctly time application of sprays as well as thorough scouting of fields increases efficacy of the fungicide products as well as helping to cut down on unnecessary applications and costs.


The critical period for control of early blight Alternaria solani of potato. Induction of bacterial blight Xanthomonas oryzae pv.

Zonificación de Alternaria solani en papa en la provincia de La Habana.

Figure 2 Figure 3 Figure 4 Figure 5 Infection of both green and ripe tomato fruit normally occurs through the calyx with lesions sometimes reaching a considerable size Figure 6.

Centro Nacional de Sanidad Agropecuaria. Not marketable fruits were discarded. These methods can be described briefly as follows. BoxGuayaquil, Ecuador. Protein concentration was determined by the Bradford Coomassie brilliant blue assay is accomplished by measurement of absorbance at nm. Despite the benefits of ASM, experiments in tomato leaf discs and different concentrations of A.

Yield The highest yield in this experiment was 12 kg total, equivalent to 3.

Alternaria solani

Get to Know Us. Garlic, neem oil and seaweed extract have oslani been shown to be effective in reducing the severity of early blight disease on tomatoes. Both green and ripe fruit are affected. The treatments with spirulina-mycorrhizas, spirulina alone, and the control not treated showed the lowest level of all the enzymes analyzed Fig. Be aware of the moisture in the soil.

Similar experiments in Australia, but with potato in production greenhouses and a dose of mg a. Cornide MT, Izquierdo F.

The first principal component CP1 was strongly and positively correlated with the original enzymatic variables, while NLA was also strongly correlated with these variables but negatively. Plant Disease Mngmt Simulations.