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Pakistan Journal of Biological Sciences
  Year: 2015 | Volume: 18 | Issue: 4 | Page No.: 185-190
DOI: 10.3923/pjbs.2015.185.190
 
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Sugarcane White Leaf Disease Incidences and Population Dynamic of Leafhopper Insect Vectors in Sugarcane Plantations in Northeast Thailand

Chiranan Rattanabunta and Yupa Hanboonsong

Abstract:
The work consisted of two experiments, i.e. Experiment 1 was conducted under controlled environments where sugarcane plants were used as hosts. This investigation aimed to monitor the occurrence of the Sugarcane White Leaf disease and the abundance of Leafhopper insect vectors and also the work aimed to provide useful information in understanding some aspects on epidemiology of the Sugarcane White Leaf disease. A Completely Randomized Design with three replications was used to justify growth and development of Leafhopper insects as affected by different temperatures: 20 (T1), 25 (T2), 30 (T3) and 35°C (T4). Experiment 2 was carried out to determine the numbers of Leafhopper insects with the use of light traps in the sugarcane Field 1 (ratoon plants), Field 2 (newly planted), Field 3 (newly planted) and Field 4 (ratoon plants). The results of Experiment 1 showed that growth and development of Leafhopper insects were highly affected by temperatures i.e. the higher the environmental temperature the faster the growth and development of the insects to reach its full adulthood. At 20°C, Leafhopper insects took 12 days to lay eggs whereas at 25°C the insects took only 6 days. Male reached its adulthood approximately 9 days earlier than female when cultured at 25°C and became approximately one week at 30°C or higher. The results of Experiment 2 showed that the majority of Leafhopper insects were found within the months of June and July for both newly planted and ratoon crops. A small amount was found in May and August with an exceptional case of Field 4 where the highest number of Leafhopper insects was found in April followed by June and July. For Sugarcane White Leaf disease, the disease was found in all months of the year except February for Fields 2 and 3. Newly planted sugarcane plants attained much smaller percentages of disease than those of the ratoon plants.
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How to cite this article:

Chiranan Rattanabunta and Yupa Hanboonsong, 2015. Sugarcane White Leaf Disease Incidences and Population Dynamic of Leafhopper Insect Vectors in Sugarcane Plantations in Northeast Thailand. Pakistan Journal of Biological Sciences, 18: 185-190.

DOI: 10.3923/pjbs.2015.185.190

URL: https://scialert.net/abstract/?doi=pjbs.2015.185.190

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