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Production Know How
  • RKMP serves the generic information related to rice cultivation in more than 2500 Reusable Learning Objects (RLOs).In other words this information is not context specific and may be useful to extension workers cutting across the states (For example - principles of land levelling).
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Symptoms of Rice Tungro Virus (RTV)

RTV can appear at any time on rice right from seedling stage. The extent of crop damage and yield loss depends on the growth stage at the time of RTV infection.

Young leaves are pale green to yellow, while older leaves are reddish orange in colour. The range of discolouration depends on the age and nitrogen status of the crop, variety and weather conditions. Infected leaves often d

Tungro Disease in Rice

Rice Tungro Virus (RTV) is a destructive disease of rice. Incidence of RTV in India was first observed at West Bengal in 1966 and two years later, appeared extensively in eastern Uttar Pradesh and northern Bihar inflicting heavy crop losses. Subsequently, RTV has been observed occasionally in parts of Andhra Pradesh, Assam, Bihar, Kerala, Pondichery, Tamil Nadu, Uttar Pradesh and West Bengal. In Andhra Pradesh, incidence of RTV has been recorded often at low to moderate severity since 1976. Howe

Other novel pest control techniques (Insect Sex Pheromones)

1. Semio-chemicals are chemicals involved in communication

among the insect species either for mating, aggregation or other gregarious activities.

2.  Among the semio-chemicals, sex pheromones play a vital role in intra-specific communication, particularly for mating between male and female insects.



Biological Control of Pests in Rice

1. Exploitation of biological agents such as parasites,

predators and pathogens is a key component of rice IPM and can be a promising alternative to ecologically disruptive chemical control measures.

2. Inundative or inoculative releases of the egg parasitoid, Trichogramma japonicum ashmead against yellow stem borer and T. chilonis Ishii against leaf folder are effective


Chemical Control

1. Despite the drawbacks involved in insecticide

usage in rainfed rice systems, the farmers readily use pesticides in times of sudden pest outbreaks. 

2. During such times, there is a need to choose the right insecticide formulation and dose as well as suitable application technique based on pest biology and crop phenology. 

3. Further, the potential environmenta

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