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Package of Practices
  • A compendium of state specific and location specific recommended package of practices are provided under this head. You may be interested to see that, thanks to our IP based customisation, that only your state (the state from where you are accessing RKMP) specific information is available.
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12
Jul

Panicle mite

Panicle mite

Local name: Kanki Nalli

Causal organism: Cnaphalocrocis medinalis

Symptoms :

1. The larvae prior to feeding, fold the leaves longitudinally and fasten the leaf margins with stitches of thread-like silk.

2. The larvae feed by scraping the green mesophyll resulting in linear pale white stripe damage. Starting with the late second instar, when larvae regularly roll up leaves they become solitary.

3. The general vigour and photosynthetic ability of an infested plant becomes greatly reduced. In cases of severe infestation, the leaf margins and tips are dried up entirely and the crop gives a whitish appearance. The damaged leaves also serve as entry points for fungal and bacterial infections.

4. Insect pests like termites, mealy bugs, rice seedling fly and root aphids are exclusive to upland rice habitats.

Control of Panicle mite

1. Spray profenophos 2.0 ml or dicofol 5.0 ml/litre of water.

2. Dust Malathion or Carbaryl @ 30 kg of the formulation/ha

12
Jul

Control of BPH/WBPH

Control of BPH/WBPH

  • Spray acephate @ 1.5 g or monocrotophos @ 2.2 ml or ethofenprox @ 2.0 ml or fenobucarb @ 2.0 ml or imidacloprid @ 0.25 ml or thiamethoxam @ 0.2 g or Buprofuzin 1.6ml per litre of water.
  • Spray fluid (200 litres/acre) should be directed towards the base of the plant.
  • Avoid spraying of combination of insecticides and synthetic pyrethroids.
  • If second spray is warranted alternate the previous chemical preferably belonging to another group.
12
Jul

BPH/WBPH

BPH/WBPH

Local name: Doma/ Tella macha doma

Causal organism: Nilaparvata lugens /Sogatella furcifera

Symptoms :

1. They infest all stages of the rice crop. Both adults and nymphs suck the sap from the base of the tillers, resulting in yellowing and drying of the plants.

2. Being a phloem feeder, removal of translocating nutrients from the plant sap reduces the net photosynthates available to the plant for sustenance and storage.

3. At early stages, round early patches appear which soon turn brownish due to drying up of the plants.

4. The symptoms spread as patches of infestation from a point out wards within the field. This condition is known as ‘hopper burn’.

5. The honeydew excreted by the hoppers at the plant base is a favourite substrate for the sooty mold. Apart from direct damage, BPH is also a vector of grassy stunt virus.

12
Jul

Hispa

Hispa

Local name: Thataku tegulu

Causal organism: Dicladispa armigera

Symptoms :

1. The adult beetles feed on the epidermal tissue of the leaves and the grubs mine the leaf tissue and pupate there.

2. The beetles scrape the chlorophyll between the veins of the lamina resulting in whitish parallel streaks. Later, owing to indiscriminate feeding even on leaf veins, white blotches appear on leaves.

3. In severe epidemics leaves dry up and the crop presents a scorched appearance.

Control of Hispa

1. Spray profenophos @ 2.0 ml or chlorpyriphos @ 2.5 ml or monocrotophos @1.6 ml/litre of water

12
Jul

Control of Leaf folder

Control of Leaf folder

1. Spray profenophos @ 2.0 ml or chlorpyriphos @ 2.5 ml or monocrotophos 36 SL @ 1.6 ml/litre of water.

2. Spray cartaphydrochloride 2.0 g or acephate 1.5 g or profenophos 2.0 ml /litre of water.

12
Jul

Leaf folder

Leaf folder

Local name: Akumudatha Purugu

Causal organism: Cnaphalocrocis medinalis

Symptoms :

1. The larvae prior to feeding, fold the leaves longitudinally and fasten the leaf margins with stitches of thread-like silk.

2. The larvae feed by scraping the green mesophyll resulting in linear pale white stripe damage. Starting with the late second instar, when larvae regularly roll up leaves they become solitary.

3. The general vigour and photosynthetic ability of an infested plant becomes greatly reduced. In cases of severe infestation, the leaf margins and tips are dried up entirely and the crop gives a whitish appearance. The damaged leaves also serve as entry points for fungal and bacterial infections.

4. Insect pests like termites, mealy bugs, rice seedling fly and root aphids are exclusive to upland rice habitats.

12
Jul

Control of Gallmidge

Control of Gallmidge

1. Avoiding staggered planting (complete planting in an area within 3 weeks) to reduce infestation.

2. Apply phorate 10G @ 12.5 kg/ha or carbofuran 3 G @ 25 kg/ha at 15 DAT in 1– 2 inches of standing water.

12
Jul

Gallmidge

Gallmidge

Local name: Gottala purugu

Causal organism: Orseolia oryzae

Symptoms :

1. The chief stage of Gall midge which causes damage is the maggot. The maggot feeds on the growing tip and suppresses the leaf primordial differentiation.

2. This in turn induces the development of radial ridges from the innermost leaf primordium followed by an elongation of the leaf sheath.

3. A hallow chamber called the ‘Gall’ forms around the larva. As the larva feeds, the Gall enlarges at the base and elongates having the appearance of an onion leaf.

4. There are 3 larval instars. Generally one maggot is found in a tiller.

5. Galls appear within a week after the larvae reach the growing point. Though the main external symptom of Gall midge attack is a ‘silver shoot’ or ‘Gall’ that resembles an onion leaf,

6. In some cases there would be no Gall development but necrosis of the growing tip is noticed. Profuse tillering is positively correlated with the silver shoots.

12
Jul

Control of Stem Borer

Control of Stem Borer  

  • Spray monocrotophos @ 36 SL 1.6 ml or chlorpyriphos 20 EC @ 2.5 ml or phosphamidon 40 SL@ 2.0 ml/litre of water.
  • Cartap hydrochloride 50 WP 2.0 g or acephate 1.5 g or profenophos 2.0 ml /litre of water (or) apply cartaphydrochloride 4G @ 8 kg/acre when the adult moths/egg masses @ one/ sq.m are noticed in the field.
12
Jul

Stem Borer

Stem Borer

Local name: Kandam tholochu purugu

Causal organism: Scirpophaga Incertulas

Symptoms :

1. The larvae of the borers enter the tiller, feed, grow and cause the characteristic symptoms of ‘dead hearts’ or ‘white ears’ depending on the crop stage.

2. At tillering stage, the feeding frequently results in severing the apical parts of the plant from the base.

3. The central leaf whorl does not unfold, turns brownish and dries out although the lower leaves remain green and healthy. This condition is known as ‘dead heart’. Affected tillers dry out without bearing panicles.

4. During panicle exertion, severing of growing part from the base results in the drying out of panicles. Panicles may not emerge out at all and those that have already emerged do not produce grain.

5. The empty panicles are very conspicuous in field as they remain straight and whitish.

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