about Dragon fruit

Abstract about Dragon fruit

The research and development on production technology of dragon fruit was carried out to study important pests of dragon fruit in the eastern region of Thailand. The studies aimed to find out effective protection methods of insect pests and plant diseases for farmers’ recommendation. The studies comprised 2research activities included the control of important insect pests and the control of important diseases of dragonfruit which were conducted in the farmers’ farm in Chantaburi province during October 2011S eptember 2015. The research were studied both in the laboratory of Plant Protection Research and Development Office and in the farmer fields in Chantaburi and Nakhonratchasrima provinces. The studies on population density and seasonal abundance of fruit flies in dragon fruit orchards revealed that there were 5 species of fruit flies namely, Bactrocera dorsalis, Bactrocera correcta, Bactrocera cucurbitae, Bactrocera umbrosaand Bactrocera tau. And it was found that B. dorsalis was the only fruit fly species that infested dragon fruit. The studies on fruit bagging to protect dragon fruit from insect pests, the results on fruit bagging materials showed that plastic, plastic bag with chlorpyrifos 1%, synthetic cloth, commercial fruit bagChoon Fong®, brown paper and nylon gave a hundred percent in efficiency in protecting insect pests. For the experiment on fruit bagging time, it was found that bagging fruit with and with-out chemical application at 14 days after fruit setting could protect dragon fruit from insect pests’ infestation 100%. The studies on efficacy of some insecticides for controlling mealy bugs, DysmiscoccusneobrevipesBeardsley in dragon fruit found that thiamethoxam 25% WG, dinotefuran 10% WP, carbaryl 85% WP, carbosulfan 20% EC, imidacloprid 70% WG and white oil 67% EC at the rates of 4 g, 10 g, 60 g, 50 ml, 5 g and 50 ml, respectively. Pesticide residue were investigated at harvest and was found that produce sprayed with all chemical was safe for consumption except carbaryl

There are threemain diseases of dragon fruits in Thailand namely anthracnose, fruit rot and brown spot or stem canker Colletotrichum gloeosporioidesand C. truncatumare the causal agents of anthracnose, which found to infect stems and fruits. Bipolaris cactivora is the causal agent of fruit rot disease, which caused damage to stems and fruits and Neoscytalidium dimidiatum, the causal agent of brown spot or stem canker, which is the most important plant pathogenic fungus of dragon fruits and it caused the severe damage to dragon fruit production. The efficiency of fungicides to control of brown spot or stem canker disease were conducted at dragon fruit plantations in Tha Mai and Makham district, Chantaburi province during 2012-2013. It was found that procloraz was the most effective fungicide in controlling brown spot or stem canker disease. The second trial experiments were conducted during 2014-2015 at dragon fruit plantations located in Tha Mai and Na Yai Am district,Chantaburi province to determine the efficiency of additional fungicides. It was found that Azoxystrobin + difenoconazole presented the best results followed by prochoraz,

mancozeb,carbendazim,azoxystrobinand benomyl. In 2014, the azoxystrobin+difenoconazole treatment showed the best result followed by propiconazole+difenoconazole, mancozeb and procloraz. In 2015 the azoxystrobin + difenoconazole treatment also showed the best result followed by propiconazole+difenoconazole, mancozeb and procloraz. In these studies were concluded that after harvesting and pruning dragon fruit, copper oxychloride should be applied at 7 days interval for two times following with azoxystrobin+difenoconazole or propiconazole +difenoconazole or procloraz in turn with mancozeb every seven days in order to control brown spot or stem canker disease of dragon fruit and at inflorescence stage, fungicides were applied again at 7 interval for three time