Nematode Pest Of Crops : Fruits

Nematode pest of Citrus

Citrus nematode: Tylenchulus semipenetrans


Symptoms

Leaves become smaller and chlorotic Leaf drop is more pronounced producing exposed branch terminals. Early wilting during water stress. Poor root development. Dirty appearance of infected roots. Faster decay of feeder roots. Root death due to heavy infestation. Infested trees are smaller and less productive than normal ones.

Management

Avoidance of infested planting materials and contaminated farm implements. Provision of adequate light and water drainage Use of resistant root stock. Pre-plant application of carbofuran 3 G 100g/tree Application of Pseudomonas fluorescens @ 20 g tree.

Banana

Banana Nematode Management


Burrowing nematode: Radopholus similis

Stunting of plants Reduction in size and number of leaves and in bunch weight. Appearance of dark red lesion on roots. Toppling of plants in windstorms or heavy rains.

Symptoms

Extensive black or purple necrosis on roots Stunting of plants. Reduction in size and number of leaves and in bunch weight.

Management

Fallowing for a period of six months or longer. Crop rotation with non-host crops. Use of disease free planting material. Storage of large corms in the sun for two weeks prior to planting. Use of cover crop calapogonium. Removal of infested portions of corm before planting. Hotwater treatment at 55o C for 15-25min. Paring and Pralinage Carbofuran 3 g @40g/ plant at 90 days after planting. Application of neem cake
Nematode pest of Citrus

Citrus nematode: Tylenchulus semipenetrans
Symptoms

Leaves become smaller and chloroticLeaf drop is more pronounced producing exposed branch terminals.Early wilting during water stress.Poor root development.Dirty appearance of infected roots.Faster decay of feeder roots.Root death due to heavy infestation.Infested trees are smaller and less productive than normal ones.

Management

Avoidance of infested planting materials and contaminated farm implements.Provision of adequate light and water drainageUse of resistant root stock.Pre-plant application of carbofuran 3 G 100g/treeApplication of Pseudomonas fluorescens @ 20 g tree.

Banana

Banana Nematode Management


Burrowing nematode: Radopholus similis

Stunting of plantsReduction in size and number of leaves and in bunch weight.Appearance of dark red lesion on roots.Toppling of plants in windstorms or heavy rains.


Affected root portion
Affected field

Lesion nematode: Pratylenchus coffeae

Symptoms

Extensive black or purple necrosis on rootsStunting of plants.Reduction in size and number of leaves and in bunch weight.

Management

Fallowing for a period of six months or longer.Crop rotation with non-host crops.Use of disease free planting material.Storage of large corms in the sun for two weeks prior to planting.Use of cover crop calapogonium.Removal of infested portions of corm before planting.Hotwater treatment at 55o C for 15-25min.Paring and PralinageCarbofuran 3 g @40g/ plant at 90 days after planting.Application of neem cake

Host: Grapevine, Papaya, Pomegranate ,Banana

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Root-knot nematodes: Meloidogyne spp. and Reniform nematode: Rotylenchulus reniformis


Symptoms

Unthrifty growthSusceptibility to growth, often occurring in patches.Reduced yield.Heavily infested plants have a much reduced root system with large elongated galls in root-knot infested plants.Small galls along feeder roots in root-knot infested plants.

Management

Planting stocks certified free of infection. Application of carbofuran 3G @ 60g/vine. Application of Pseudomonas fluorescens @ 50g/vine.