Diseases of oats DISEASES CAUSAL ORGANISM Septoria avenae blotch Phaeosphaeria avenaria f.sp. avenaria Stem and leaf rust Puccinia graminis var. avena Leaf spot Drechslera campanulata Bacterial blight Pseudomonas syringae pv.striafaciens Yellow dwarf Barley yellow dwarf virus 1. Septoria avenae blotch — Phaeosphaeria avenaria f.sp. avenaria Symptoms The fungus infects leaves, sheaths and stem and […]
Tag: mouth parts of insects
PEST Affecting the Fruits – GUAVA, BER, JACK AND PINEAPPLE – Pest Studymaterial
GUAVA Tea mosquito bug Helopeltis antonii (Miridae: Hemiptera) Fruit borer/ Castor capsule borer Conogethes punctiferalis (Pyraustidae: Lepidoptera) Guava fruit flies Bactrocera diversus (Tephritidae: Diptera) Whiteflies, Aleurotuberculatus psidii (Aleyrodidae: Hemiptera) Aphids, Aphis gossypii (Aphididae: Hemiptera) Mealy bugs, Coccus viridis and Ferrisia virgata (Pseudococcidae: Hemiptera) Guava scales Chloropulvinaria psidii (Diaspididae: Hemiptera) Bark borer, Indarbela tetraonis (Metarbelidae: Lepidoptera) […]
Insect Mouth Parts and their Modifications – Agricultural studies – Free Online Studymaterial
Mouth parts of insects have many variations in structure and function depending upon theirfeeding situations. Insect mouthparts are broadly classified into two groups:- Mandibulate type (Biting types) (Feeding on solid food) Haustellate type (Sucking type) (Feeding on liquid food) I. Mandibulate types1. BITING AND CHEWING TYPEEg.: Cockroach, Grasshopper, Beetles, Larva Labrum: Rectangular plate like Mandibles: […]