Agri Diseases

DISEASES OF COTTON – Agricultural study materials

DISEASES CAUSAL ORGANISM Fusarium Wilt Fusarium oxysporium f.sp.vasinfectum Verticilium Wilt Verticillium dahliae Grey mildew or Areolate mildew Ramularia areola Root rot Rhizoctonia bataticola Anthracnose Colletotrichum capsici and Glomerella gossipii Leaf blight Alternaria macrospora Boll rot -Complex disease F.monoliforme, C.capsici, A.flavus, A.niger Stenosis or Small leaf Phytoplasma (Mycoplasma like organism) Bacterial blight Xanthomonas campestris pv. malvacearum […]

Agri Diseases

DISEASES OF SUNFLOWER – Agricultural study materials

DISEASES CAUSAL ORGANISM Rust Puccinia helianthi Leaf blight Alternaria helianthi Root rot or charcoal rot Macrophomina phaseolina Head rot Rhizopus nigricans 1. RUST – Puccinia helianthi Symptoms Small, reddish brown pustules (uredia) covered with rusty dust appear on the lower surface of bottom leaves. In severe infection, numerous pustules appear on leaves leading to yellowing […]

Agri Diseases

DISEASES OF GINGELLY OR SESAME – Agricultural study materials

DISEASES CAUSAL ORGANISM Leaf blight Alternaria sesami Leaf spot or white spot Cercospora sesami Leaf and stem blight Phytophthora parasitica var sesami Root rot or charcoal rot Macrophomina phaseolina Wilt Fusarium oxysporium f.sp.sesami Powdery mildew Erisiphe cichoracearum Bacterial blight Xanthomonas campestris pv.sesami  Bacterial leaf spot Pseudomonas sesami Leaf curl Nicotiana virus Phyllody Mycoplasma – like […]

Agri Diseases

DISEASES OF BENGAL GRAM / CHICK PEA – Free Study Material

1. WILT – Fusarium oxysporum f.sp. ciceri Symptoms The disease occurs in seedling stage and flowering stage. Infected seedlings show yellowing, drying of leaves, browning of vascular bundles and finally wilting of plants. Mode of Spread and Survival  The disease spreads through irrigation water and farm implements. The pathogen survives as chlamydospores in the soil […]

Agri Diseases

DISEASES OF PULSES – Agricultural study materials

Common Pulse Diseases COMMON DISEASES CAUSAL ORGANISM Dry root rot Macrophomina phaseolina Leaf spot Cercospora canescens Powdery mildew Erysiphe polygoni Rust Uromyces phaseoli-typica Anthracnose Colletotrichum lindemuthianum Bacterial blight Xanthomonas phaseoli Yellow mosaic Yellow mosaic virus Leaf crinkle Leaf crinkle virus RED GRAM / PIEGON PEA Wilt Fusarium oxysporum f.sp. udum Stem blight Phytophthora drechsleri f.sp. […]

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Diseases Of Maize Plant – Study material

DISEASES OF MAIZE DISEASES CAUSAL ORGANISM Downey mildew / Crazy top Peronosclerospora sorghi, P.philipenensis Charcoal rot Macrophomina phaseolina Head smut Sphacelotheca reiliana Leaf blight Helminthosporium maydis Rust Puccinia sorghi 1. DOWNY MILDEW OR CRAZY TOP- Peronosclerospora sorgi Symptoms The development of chlorotic streaks appears on the leaves and plants exhibit stunted and bushy appearance. White […]

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Disease of Barley Plant – Agricultural study materials

DISEASES OF BARLEY DISEASES CAUSAL ORGANISM Leaf rust Puccinia hordei Stem rust Puccinia graminis f.sp. secalis Stripe rust Puccinia striiformis Covered smut Ustilago hordei Loose smut Ustilago nuda Powdery mildew Erysiphe graminis f.sp. hordei Bacterial leaf blight Pseudomonas syringae pv. Syringae Barley stripe mosaic Barley stripe mosaic virus (BSMV) 1. Stem rust — Puccinia graminis […]

Agri Diseases

DISEASES OF RICE – Fungal, Bactorial and virus diseases – Online Studymaterial

Important diseases of rice DISEASES CAUSAL ORGANISM FUNGAL DISEASES Blast Pyricularia oryzae Brown spot or Sesame leaf spot Bipolaris oryzae (Helminthosporium oryzae) Sheath blight Rhizoctonia solani Sheath rot Sarocladium oryzae Narrow brown leaf spot Cercospora janseana Stem rot Sclerotium oryzae Foot rot or Bakanae disease Fusarium moniliforme False smut Ustilaginoidea virens Udbatta disease Ephelis oryzae […]

Insects

Pests On Tuber Crops – Potato, sweet potato – Insects study materials

PESTS ON TUBER CROPS POTATO Cutworms,    Noctuidae: Lepidoptera Common cutworm,     Agrotis segetum  Black cutworm, Agrotis ipsilon  Spotted cutworm, Xestia C-nigrum  Variegated cutworm, Peridroma saucia Feed on foliage Cut tender stem Larvae remain in soil Larva dark brown in colour  Pupates inside the soil Adult – brown fore wings with spots and markings Potato […]

Insects

Pest Affecting moringa, drumstick tree, horseradish tree, and ben oil tree or benzolive tree – Free Study Material

MORINGA Moringa oleifera is a plant that is often called the drumstick tree, the miracle tree, the ben oil tree, or the horseradish tree. Moringa has been used for centuries due to its medicinal properties and health benefits. It also has antifungal, antiviral, antidepressant, and anti-inflammatory properties.Pod fly Gitona distigma (Drosophilidae: Diptera) Aematurely and full-fed caterpillars come out […]

Insects

Pest Affecting Cruciferous vegetables like cauliflower, cabbage, kale, garden cress, bok choy, broccoli, Brussels – Free Online Studymaterial

CRUCIFEROUS VEGETABLES Cruciferous vegetables are vegetables of the family Brassicaceae (also called Cruciferae) with many genera, species, and cultivars being raised for food production such as cauliflower, cabbage, kale, garden cress, bok choy, broccoli, Brussels sprouts and similar green leaf vegetables. The family takes its alternative name (Cruciferae, New Latin for “cross-bearing”) from the shape […]

Insects

PEST IN CUCURBITATIOUS VEGETABLES – CUCUMBER, WATERMELONS, SQUASH AND PUMPKIN, GUARDS – Free Online Studymaterial

family of chiefly herbaceous tendril-bearing vines (order Campanulales) that are characterized by an inferior ovary and anthers usually united and that include food plants (as the cucumber, melon, squash, and pumpkin), drug plants (as the colocynth), and ornamental plants (as the gourds) Fruit flies (Tephritidae: Diptera) Bactrocera dorsalis:  Adult is a reddish-brown fly with lemon-yellow […]

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Pest Affecting Tomoto Production – Free Online Agri Studymaterial

TOMATO Fruit borer Helicoverpa armigera (Noctuidae: Lepidoptera) It is a major pest of tomato. Main hosts are gram, cotton, citrus, indigo, cowpea, groundnut, linseed, sunflower, bhendi, chilli, millets, tobacco, etc.  Young larvae feed on tender foliage and full-grown caterpillars attack fruits.  They make circular boreholes and thrust their head inside fruit and eat inner contents.  […]

Insects

Pest Affecting Brinjal Production – Free Online Agri Studymaterial

BRINJAL Shoot and fruit borer Leucinodes orbonalis (Pyraustidae: Lepidoptera) Leucinodes orbonalis is the most important and destructive pest of brinjal. It starts damaging brinjal plant, few weeks after transplantation.  Larva bores into tender shoots and causes withering of terminal shoots or dead hearts.  It also bores into petioles of leaves, flower buds and developing fruits […]