Data/hora: 13/06/2024 01:10:24

Provedor de dados: | Thai Agricultural Research Repository
País: | Thailand

Título:

การเปลี่ยนแปลงสภาพภูมิอากาศและการระบาดของโรคข้าวในนาชลประทานที่ปลูกต่อเนื่องในจังหวัดพัทลุง สงขลา และนครศรีธรรมราช

Climate change and disease epidemics in continuous-cropping irrigated rice fields in Phatthalung, Songkhla and Nakhon Si Thammarat provinces

Autores: | Chanasirin Klinmanee; Souwanee Sribur; Acharaporn Na Lampang Noenplab.
Data: | 2013-12-04
Ano: | 2013
Palavras-chave: | Climate; Disease epidemics; Continuous cropping; Irrigated rice fields; สภาพภูมิอากาศ; โรคข้าว; การระบาดของโรค; การปลูกพืชต่อเนื่อง; นาชลประทาน; จ.พัทลุง; จ.สงขลา; จ.นครศรีธรรมราช.
Resumo: | The effect of climate change may influence the intensity and severity in some rice diseases, particularly in continuous-cultivation irrigated areas. To study the outbreak of rice diseases in relation to climate change, the experiment using Split-plot in RCB design having 3 replicates was conducted at Phatthalung Rice Research Center during October 2010 to December 2012. The main plot consisted of 12 sowing dates, one month each throughout the year. Sub-plots contained two rice varieties being PSL2 and CNT1. Disease assessment for incidence and severity was carried out in each sub-plot. Meteorological data such as temperature, relative humidity and rainfall were collected from the meteorological station. Based on meteorological data, the average annual temperature in 2012 was increased while rainfall and humidity were decreased in comparison to 2011. During the experiment, rice blast was generally found twice a year on both PSL2 and CNT1. The first occurrence being in a range of 0.2-10% severity was recorded in the rainy season (Oct-Nov), having the average temperature within a range of 26.8-28.4 °C and relative humidity between 76.97-86.67%. The second one was found after the flood (Apr-Jun) and more serious being 2-23% severity, having the average temperature within a range of 28.9-29.7 °C and relative humidity between 69.0-77.53%. Both incidence and severity on CNT1 was greater than those on PSL2. Two other diseases i.e. brown spot and dirty panicle were also found right through the experiment with PSL2 being more susceptible than CNT1. The average temperature during these two diseases’ occurrence was  within a range of 26.4-29.72 °C and relative humidity between 67.0-87.0%, greater than those for Blast disease. In general, the average temperature in 2012 was higher than that of 2011. On the contrary, the average relative humidity and total rainfall in 2012 were lower than that of 2011. Concurrently, disease outbreak was monitored in 51 farmers’ fields at Phatthalung, Songkhla and Nakhon Si Thammarat provinces from October 2010 to April 2013. Results showed that the order of rice diseases ranking from the largest infectious areas to the smallest ones being 20 fields of brown spot (1,245 rais, 6.25 rais = 1 ha), 12 fields of blast (817 rais), 10 fields of Bacterial blight (320 rais) and 9 fields of Bakanae disease (200 rais). Thus, blast and brown spot were the two major diseases found in the farmers’ fields in the Southern part of Thailand during the experimental time.
Tipo: | PhysicalObject
Idioma: | Thailandês

Identificador:

Proceedings of the 30th Rice and Temperate Cereal Crops Annual Conference 2013, Bangkok (Thailand), p. 235-250

ISBN 978-974-403-928-6

http://anchan.lib.ku.ac.th/agnet/handle/001/5444

เอกสารการประชุมวิชาการข้าวและธัญพืชเมืองหนาว ครั้งที่ 30 พ.ศ. 2556, กรุงเทพฯ, หน้า 235-250

Formato: | 326 p.

Fonte:

ลิขสิทธิ์เป็นของเจ้าของบทความแต่เพียงผู้เดียว

สงวนลิขสิทธิ์ตามพระราชบัญญัติลิขสิทธิ์ พ.ศ. 2537

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