Combinations of strobilurin fungicides and acibenzolar (Bion) to reduce scab on passionfruit caused by Cladosporium oxysporum

Field evaluation of a plant activator, captan, chlorothalonil, copper hydroxide, iprodione, mancozeb and strobilurins for the control of citrus brown spot of mandarin

“…A. alternata, however, will be less susceptible to such compounds, as it kills host cells prior to colonisation, therefore reducing its contact with active host biochemistry. Willingham et al (2002) also found that A. alternata, causing leaf spot of passionfruit, was poorly controlled with acibenzolar, compared with Cladosporium oxysporum (the cause of scab) which, like G. citricarpa, is readily exposed to host biochemistry.…”

Efficacy of acibenzolar-S-methyl (Bion®) treatment of Australian commercial passionfruit, Passiflora edulis f. sp. flavicarpa, on resistance to Passionfruit woodiness virus (PWV) and activities of chitinase & β-1,3-glucanase

“…flavicarpa varieties from seed and use of Fusarium wilt-resistant seedling rootstocks on which to graft hybrid varieties (Willingham et al 2002;Anderson et al 2009). Passionfruit woodiness disease-tolerant plants were generated in Australia by pre-immunizing or crossprotecting plants with a mild strain of PWV (Simmonds 1959) to compete with a more virulent strain of the same viral species in the plant.…”

“…P. edulis f. edulis (purple passionfruit) and P. edulis f. flavicarpa (tropical golden passionfruit) which are selectively hybridized and cultivated in Australia for commercial production (Willingham et al 2002;Anderson et al 2009). Losses due to fungal diseases, for example fruit scab, Alternata spot, anthracnose, base rot and Septoria spot (caused by Cladosporium oxysporum, Alternaria alternata, Colletotrichum gloeosporioides, Fusarium solani and Septoria passifloricola, respectively) (Willingham et al 2002;Anderson et al 2009) represent significant economic risks for passionfruit plantations. However, passionfruit woodiness disease caused by a number of distinct potyviruses is considered the most important and damaging disease of passionfruit crops (Cerqueira-Silva et al 2014;Fischer and Rezende 2008;Parry et al 2004).…”

“…Insecticide treatment is not effective as aphids rarely colonize passionfruit in Australia and it also encourages repeated aphid probing, thus increasing virus spread (Hooks et al 2007). Virus control is therefore limited to good sanitation and removal of infected plants (Willingham et al 2002;Anderson et al 2009;Maciel et al 2009) or complete replacement of significantly diseased orchards (Trevisan et al 2006). Cerqueira-Silva et al (2014) reported the current status on classical approaches to improve woodiness disease resistance in Brazil, which incorporate wild Passiflora species as potential sources of resistance.…”

Impact of Bio Safe Compounds and Resistance Inducers on Certain Soil Borne Diseases, Growth and Yield of Pea Plants (Pisum sativum L.)

“…Also, benzothiadiazole (BTH) has been activated induced resistance in pea plants (Dann and Deverall, 2000) and used as a defense activator in diseases management programs in many crops to produce healthy plants (Bayoumi and Hafez, 2006). Studies in Australia and Brazil revealed that BTH generally reduced diseases caused by Cladosporium oxysporum on passion fruits (Willingham et al, 2002), and Xanthomonas axonopodis pv. passiflorae (Boro et al, 2011).…”