Risk assessment for rice planthopper and tungro disease outbreaks

Holt, J.; Chancellor, T.; Reynolds, D. R.; Tiongco, E. R.

doi:10.1016/0261-2194(95)00141-7

Cited by 42 publications

(22 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Increasing cropping intensity will increase the potential for insect herbivores to complete further generations and results in practical problems such as carryover of pests and weeds from one crop through stubble or fallow periods to the next crop (Holt et al, 1996;Azzam and Chancellor, 2002).…”

Section: Cropping Intensitymentioning

confidence: 99%

“…During dry fallows, where rice plants die, specialist herbivores such as the brown planthopper (Nilaparvata lugens [Stål]: Delphacidae: Homoptera) will disperse and populations decline or disappear (Holt et al, 1996). Dry fallows are also important opportunities for wild birds to consume dropped grain and prevent volunteer rice or weedy rice in succeeding crops (Stafford et al, 2010).…”

Section: Cropping Intensitymentioning

confidence: 99%

See 1 more Smart Citation

Integrated pest management for sustainable rice cultivation: a holistic approach

Horgan¹

2017

Burleigh Dodds Series in Agricultural Science

View full text Add to dashboard Cite

Section: Cropping Intensitymentioning

confidence: 99%

Section: Cropping Intensitymentioning

confidence: 99%

Integrated pest management for sustainable rice cultivation: a holistic approach

Horgan¹

2017

Burleigh Dodds Series in Agricultural Science

View full text Add to dashboard Cite

“…An additional measure might be the provision of good living conditions to generalist predators like dragon flies in neighbouring waters. Ratoons (interim rice growth between the main harvests) remain reservoirs of some plant diseases, particularly insect borne virus diseases, like tungro, grassy stunt and ragged stunt (Holt et al 1996), and also often sustain a small population of hoppers (Chakravarthy 1987) among other insects. This makes the ratoon rice fields a very attractive habitat for predatory arthropods, like spiders and more specialised natural enemies like parasitoids and predatory bugs while it does not promote high hopper populations in the post fallow crop (Schoenly et al 2010) but might help reducing pest infestation by sustaining natural enemy populations between rice crops.…”

Section: Ecological Engineeringmentioning

confidence: 99%

The LEGATO cross-disciplinary integrated ecosystem service research framework: an example of integrating research results from the analysis of global change impacts and the social, cultural and economic system dynamics of irrigated rice production

Spangenberg

Beaurepaire

Bergmeier

et al. 2017

Paddy Water Environ

View full text Add to dashboard Cite

In a cross-disciplinary project (LEGATO) combining inter-and transdisciplinary methods, we quantify the dependency of rice-dominated socio-ecological systems on ecosystem functions (ESF) and the ecosystem services (ESS) the integrated system provides. In the collaboration of a large team including geo-and bioscientists, economists, political and cultural scientists, the mutual influences of the biological, climate and soil conditions of the agricultural area and its surrounding natural landscape have been analysed. One focus was on sociocultural and economic backgrounds, another on local as well as regional land use intensity and biodiversity, and the potential impacts of future climate and land use change. LEGATO analysed characteristic elements of three service strands defined by the Millennium Ecosystem Assessment (MA): (a) provisioning services: nutrient cycling and crop production; (b) regulating services: biocontrol and pollination; and (c) cultural services: cultural identity and aesthetics. However, in line with much of the current ESS literature, what the MA called supporting services is treated as ESF within LEGATO. As a core output, LEGATO developed generally applicable principles of ecological engineering (EE), suitable for application in the context of future climate and land use change. EE is an emerging discipline, concerned with the design, monitoring and construction of ecosystems and aims at developing strategies to optimise ecosystem services through exploiting natural regulation mechanisms instead of suppressing them. Along these lines LEGATO also aims to create the knowledge base for decision-making for sustainable land management and livelihoods, including the provision of the corresponding governance and management strategies, technologies and system solutions.

show abstract

“…The severity of damage and the frequency of outbreak have increased since 1960s, because of the use of greater quantities of nitrogenous fertilizers and insecticides after popularity of improved semi-dwarf rice varieties (Pathak 1972;Dyck and Thomas 1979;Sogawa 1982;Holt et al 1996). Rice plants in large area are often jeopardized seriously before discovery in rice production because of paroxysm characteristics of the BPH, which caused enormous losses.…”

Section: Introductionmentioning

confidence: 99%

Genetic mapping of bph20(t) and bph21(t) loci conferring brown planthopper resistance to Nilaparvata lugens Stål in rice (Oryza sativa L.)

Yang

Li³

et al. 2011

Euphytica

View full text Add to dashboard Cite

Brown planthopper(BPH) is one of the most serious and destructive insect pests of rice in most rice growing regions of the world. In this study, two major resistance genes against BPH have been identified in an Oryza rufipogon (Griff.) introgression rice line, RBPH54. Inheritance of the BPH resistance in RBPH54 was studied by screening the resistance in parents, F1, F2 and BC1 generations against BPH biotype 2. A population of BC3F2 lines was developed and SSR markers were employed for the gene mapping, and new markers were designed for fine mapping of the resistance genes, while sequence information of BAC/PAC clones was used to construct physical maps of the genes. The results showed that the BPH resistance in RBPH54 was governed by recessive alleles at two loci, tentatively designated as bph20 (t) and bph21(t). The locus bph20(t) was fine mapped to the short arm of chromosome 6 about 2.7 cM to the upper marker RM435 and 2.5 cM to lower marker RM540 and in a 2.5 cM region flanked by two new SSR markers BYL7 and BYL8 which were developed in the present study. The other BPH resistance locus bph21(t) was initially mapped to a region 7.9 cM to upper marker RM222 and 4.0 cM to lower marker RM244 on the short arm of chromosome 10. For physical mapping, the bph20(t)-linked markers were landed on BAC/PAC clones of the reference cv., Nipponbare, released by the International Rice Genome Sequencing Project. The bph20(t) locus was physically defined to an interval of about 75 kb with clone P0514G1. Identification and location of these two genes in the present study have diversified the BPH resistance gene pool, which give benefit to the development of resistant rice cultivars, and the linkage PCR-based SSR markers for the bph20(t) and bph21(t) genes would help realize the application of the genes in rice breeding through marker-assisted selection.

show abstract

Risk assessment for rice planthopper and tungro disease outbreaks

Cited by 42 publications

References 20 publications

Integrated pest management for sustainable rice cultivation: a holistic approach

Integrated pest management for sustainable rice cultivation: a holistic approach

The LEGATO cross-disciplinary integrated ecosystem service research framework: an example of integrating research results from the analysis of global change impacts and the social, cultural and economic system dynamics of irrigated rice production

Genetic mapping of bph20(t) and bph21(t) loci conferring brown planthopper resistance to Nilaparvata lugens Stål in rice (Oryza sativa L.)

Contact Info

Product

Resources

About