A Way Forward to Combat Insect Pest in Rice

Abstract

The damage caused by insect pest is the continual factor for the reduction of rice production. To date, 232 rice insect pest species are identified in Bangladesh and more than 100 species of insects are considered pests in rice production systems globally, but only about 20 - 33 species can cause significant economic loss. The major goal of this study is to explore all the possible ways of developed and proposed technologies for rice insect pests management and minimize economic losses. Insect pests cause 20% average yield loss in Asia where more than 90% of the world's rice is produced. In Bangladesh, outbreak of several insects such as rice hispa, leafroller, gallmidge, stem borers and brown planthopper (BPH) occurs as severe forms. Based on previous reports, yield loss can reach upto 62% in an outbreak situation due to hispa infestation. However, BPH can cause 44% yield loss in severe infestested field. To overcome the outbreaks in odd years and to keep the loss upto 5%, it is necessary to take some preventive measures such as planting of resistant or tolerant variety, stop insecticide spraying at early establishment of rice, establish early warning and forecasting system, avoid cultivation of susceptible variety and following crop rotation. Subsequent quick management options such as insecticidal treatment for specific insect pest should also be broadcasted through variety of information systems. Advanced genomic tool can be used to develop genetically modified insect and plants for sustainable pest management. In addition, to stipulate farmers not use insecticides at early crop stgae and minimize general annualized loss, some interventions including training rice farmers, regular field monitoring, digitalization in correct insect pests identification and their management (example; BRRI rice doctor mobile app), and demonstration in farmers field. Each technology itself solely or combination of two or more or all the packages can combat the insect pests, save natural enemies, harvest expected yield and contribute to safe food production in Bangladesh. Bangladesh Rice J. 25 (1) : 1-22, 2021

Status and Prospects of Spring Rice in Nepal: A Review

“…Worldwide, more than 100 species of insects are regarded as pests in rice production systems, yet only 20 to 33 species can cause significant economic loss. In Asia, where more than 90% of the world's rice is produced, insect pests reduce yields by 20% on average (Ali et al, 2021). The most prevalent primary pests of rice around the world include plant hoppers, leaf hoppers, gall midges, defoliaters, stem borers, bugs, rice hispa, etc.…”

“…The major disease affecting rice is false smut (Adhikari et al, 2019). Due to pest population evolution, resistant types and formerly efficient insecticides are failing, making these insects more difficult to control and endangering food security (Ali et al, 2021). The switch from traditional rice types to hybrid ones, which have a higher vulnerability to insect pests, was the main cause of the productivity decline according to the farmers.…”

“…IPM is a pest management strategy that prioritizes the least harmful techniques. When non-chemical treatments have failed and the pest problem is severe enough to urge for chemical control, chemical pesticides may be used as a last resort in IPM approach (Ali et al, 2021). Insect resistance breeding and functional mechanism, application of gene drive technique and use of drone for pest monitoring and early identification are some of the modern approaches for rice insect pest management (Ali et al, 2021).…”

Effective multidimensional treatment identification of different chemical fertilizers: Response of insect dynamics and rice production

“…Interestingly, the rice ecosystem in Bangladesh supports 375 beneficial arthropod species [ 11 ], but only around 20 to 33 species have considerable economic impacts. Insect pests lead to an average yield loss of 20 % in Asia, where more than 90 % of the world's rice is grown [ 12 ].…”

Monitoreo de insectos plaga mediante SIG aplicados al cultivo de Oryza sativa L. en Naranjal, Ecuador

“…Los insectos son considerados plaga cuando compiten con nuestro alimento y ocasionan mermas económicas en la producción (Jankielsohn, 2018). Las plagas infestan y a la vez devastan los campos de arroz desde la época de siembra hasta la cosecha, logrando ocasionar averíos significativos, plasmando pérdidas de hasta el 40% de la producción (Ali et al, 2021). En la naturaleza/ambiente coexisten también organismos benéficos que despliegan acción sobre los insectos plaga, manteniéndolos en mesura; parasitoides, depredadores, y entomopatógenos.…”