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National

21
May

DRRH-2

Cultivation package for DRR-2 Hybrid

File Courtesy: 
Directorate of Rice Research, Hyderabad
Photo Courtesy: 
Directorate of Rice Research, Hyderabad
18
May

Paddy Row Seeder

Manual transplanting involves a lot of human drudgery as the operation is done in bending posture for longer periods. It is essential that the timely transplanting is important to achieve good crop yields.

Delayed monsoon forces the farmer to go for planting in a short span of time for which the nursery availability becomes a serious constraint.

File Courtesy: 
Directorate of Rice Research, Hyderabad
Photo Courtesy: 
Directorate of Rice Research, Hyderabad
15
May

Pink stem borer (PSB)

Pink stem borer (PSB), Sesamia inferens (Walker)

File Courtesy: 
DRR Technical Bulletin No. 59/2011, Rice stem borers in India: species composition and distribution
15
May

Gold fringed borer

Gold fringed borer (GFB), Chilo auricilius (Dudgeon)

File Courtesy: 
DRR Technical Bulletin No. 59/2011, Rice stem borers in India: species composition and distribution
15
May

Dark headed borer

Dark headed borer (DHB), Chilo poly chrysus(Meyrick)

File Courtesy: 
DRR Technical Bulletin No. 59/2011, Rice stem borers in India: species composition and distribution
15
May

Striped stem borer

Striped stem borer (SSB), Chilo suppressalis (Walker)

File Courtesy: 
DRR Technical Bulletin No. 59/2011, Rice stem borers in India: species composition and distribution
14
May

White stem borer

 1.   White stem borer (WSB)

There is no clarity regarding the taxonomic identity of the white stem borer species reported on rice in India. Two species reported in the literature relevant to rice are described below:
 
a.

File Courtesy: 
DRR Technical Bulletin No. 59/2011, Rice stem borers in India: species composition and distribution
14
May

Yellow stem borer

Yellow stem borer (YSB), Scirpophaga incertulas (Walker)

 
Distribution: This species is prevalent in many states across the country.

File Courtesy: 
DRR Technical Bulletin No. 59/2011, Rice stem borers in India: species composition and distribution
11
May

Varadhan

High yielding variety released by DRR, Hyderabad

 
Varadhan is a mid-early duration variety (125 days) with semi-dwarf stature, erect and improved plant type having strong culm, prominent flag leaf in the top canopy, lower panicle position with long and heavy panicles.

File Courtesy: 
Directorate of Rice Research, Hyderabad
Photo Courtesy: 
Directorate of Rice Research, Hyderabad
11
May

AKSHAYADHAN

High yielding variety released by DRR, Hyderabad

Akshayadhan is a medium duration variety (135 days) with improved erect plant type having medium-tall stature (> 100 cm), strong culm, synchronous tillering, lower panicle position with long and heavy panicles. Being an indica x tropical japonica derivative, the variety recorded very high yield advantage over national, regional and local checks in 3 years of AICRIP trials.

File Courtesy: 
Directorate of Rice Research, Hyderabad
Photo Courtesy: 
Directorate of Rice Research, Hyderabad
8
May

VIKRAMARYA

File Courtesy: 
Directorate of Rice Research, Hyderabad
8
May

Chemical control of Rice Tungro Virus vector

The spread of rice tungro disease can be checked indirectly by controlling the vector by suitable pesticide application. As the plants are more vulnerable to RTV infection during early stages of growth, chemical protection of the nursery effectively reduces green leafhopper population and thereby minimises the build up of virus inoculum as well as the pace of transmission.

Nursery Protection

File Courtesy: 
Directorate of Rice Research, Hyderabad
8
May

Use of resistant variety for RTV

Tungro virus can not be directly controlled by applying any chemical. The best method of preventing tungro is to grow resistant varieties. A variety may be resistant to virus or the insect vector or to both virus and insect vector.
VIKRAMARYA, developed at Directorate of Rice Research, Hyderabad is the resistant variety now available for general cultivation. Other promising resistant medium duration cultures include: IET 9994, IET 8560 and IET 8565 with slender grains and IET 8902 with long bold grains.

File Courtesy: 
Directorate of Rice Research, Hyderabad
Photo Courtesy: 
Directorate of Rice Research, Hyderabad
8
May

Mode of transmission of RTV

When young (nymphs) and adult green leafhoppers feed on diseased plants, virus particles get attached to mouth parts (stylets). As these insects fly and feed on other plants, the virus particles from the stylets get introduced into healthy plants. The insects pick up virus particles within 5 minutes of feeding and can transmit these particles to other healthy plants. The green leafhoppers can not retain virus for a long time. They acquire virus again through repeated feedings. Generally, 8 -10 days after such an introduction of virus in plants, tungro virus disease symptoms appear.

File Courtesy: 
Directorate of Rice Research, Hyderabad
Photo Courtesy: 
Directorate of Rice Research, Hyderabad
8
May

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.

File Courtesy: 
Directorate of Rice Research, Hyderabad
Photo Courtesy: 
Directorate of Rice Research, Hyderabad
8
May

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.

File Courtesy: 
Directorate of Rice Research, Hyderabad
7
May

Effective chemical control for the planthoppers

File Courtesy: 
Directorate of Rice Research
7
May

Rice Varieties resistant to BPH & WBPH

File Courtesy: 
Directorate of Rice Research
7
May

Rice Varieties resistant to White Backed Planhopper

File Courtesy: 
Directorate of Rice Research, Hyderabad
7
May

Rice Varieties resistant to BPH

S.No.
State
Name
Duration (days to 50% flowering)
Brown Planthopper
1.
CVRC
Jitendra
135
2.
Assam
Manoharsali
130
3.
Assam
Satyaranjan
120
4.
Andhra Pradesh
Chaitanya
120
5.
Andhra Pradesh
Chandan
120
6.
Andhra Pradesh
Sonasali
105
7.
Andhra Pradesh
Vajram
120
8.
Bihar
Kanak
110
9.
Chhattisgarh
Chandrahasini
120
10.
Kerala
Bhadra
105
11.
Kerala
Jyothi
85
12.
Kerala
Ranjani
84
13.
Kerala
Revathy
105
14.
Kerala
Uma
100
15.
Maharashtra
SYE2001
105
16.
Madhya Pradesh
Ruchi
100
17.
Orissa
Daya
95
18.
Orissa
Kshira
105
19.
Orissa
Mehar
105
20.
Orissa
Pratap
105
21.
Orissa
Surendra
101
22.
Orissa
Tara
70
23.
Orissa
Udaya
100
24.
Puducherry
Bharatidasan
85
25.
Tamil Nadu
ADT37
75
26.
Tamil Nadu
ASD17
70
27.
Tamil Nadu
ASD18
80
28.
Tamil Nadu
MDU3
95
29.
West Bengal
Bhudeb
123
30.
West Bengal
Jalaprabha
120
File Courtesy: 
Directorate of Rice Research
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