Rice is a staple food to over half of the world population. It is an economically important crop throughout South Asia. Rice in this region is susceptible to insect pests such as Planthoppers, Leafhoppers, Stem borers, Hispa and many others. Several management practices have been adopted in the region since historic times. The management practices include cultural, biological and chemical methods in addition to integrated and miscellaneous approaches. Rice farmers in the region rely heavily on the conventional cultural practices. However, the trend is shifting slowly to the chemical approaches with gradual increase in availability and affordability of synthetic insecticides. Integrated Pest Management (IPM), which focuses on sustainable crop production, has shown promising results. Modern management techniques such as genetic modification, use of digital technology, resistant cultivars, fungal entomopathogens etc. are more effective and eco-friendly. The focus at present should be t.
See Full PDF See Full PDFBangladesh Rice Journal
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 i.
Download Free PDF View PDF
Insect population has changed both spatially and temporally over the period of time in a crop like rice. In the present study, data from the year 1965 to 2017 shows considerable increase of insect pests to 21 numbers. Their spread to large rice areas has been worked out which is a matter of concern, particularly Brown Planthopper (BPH), which has invaded all rice growing areas of the country. Present article focuses on more frequent occurrence of pests in different years related to the extent of damage incurred, which will be the principal concern of applied entomologists and farmers. Insects are classified as pests based not solely on numbers but on socioeconomic impact and on biological tolerance of the host to pest attack. In the present study, emphasis is placed upon host plant resistance to pests, proper monit oring and developing location-specific IPM packages for management of rice insect pests based on their initial populations and the processes by which they change to endemic form.
Download Free PDF View PDF
Current Journal of Applied Science and Technology
Download Free PDF View PDF
Rice crop suffers from a number of biotic constraints out of them insect pests are a prominent one in deteriorating the yield and market value rice grains. Hence, management of the insect pests are of utmost importance to increase the productivity of rice. Various insect pests of rice include yellow stem borer, brown plant hopper, leaf folder, green leafhopper, hispa, gall midge etc. Agronomic management or cultural control refers to the control of insect pests through adoption of normal farm practices in appropriate time in such a way that insects are either eliminated or reduced in population. The agronomic management practices of rice insect pests are given briefly in this article.
Download Free PDF View PDF
