Crown Gall (caused by Agrobacterium tumefaciens)

Lint Degradation or Frost Mold (caused by Pseudomonas syringae, Pseudomonas fluorescens, Erwinia herbicola or Pantoea agglomerans)

FUNGAL DISEASES

Ascochyta Blight or Wet Weather Blight (caused by Ascochyta gossypii)

Black Root Rot or Thielaviopsis (caused by Thielaviopsis basicola or Chalara elegans)

Boll Rot (caused by Ascochyta gossypii, Colletotrichum gossypii--sometimes referred to as witched broom, Glomerella gossypii, Fusarium spp., Lasiodiplodia theobromae, Diplodia gossypina, Botryosphaeria rhodina, Physalospora rhodina, Phytophthora spp., Phytopthora capsici and/or Rhizoctonia solani)

Bronze Wilt or Copper Top

Charcoal Rot (caused by Macrophomina phaseolina, Colletotrichum gossypii and/or Glomerella gossypii) -- (Additional information 1)

Cotton Boll Rot (caused by Fusarium moniliforme) -- (Additional information 1, 2 and 3)

Fusarium wilt (caused by Fusarium oxysporum and/or Fusarium vasinfectum)

Leaf Spot (caused by Alternaria macrospora, Alternaria alternata, Cercospora gossypina, Mycosphaerella gossypina, Cochliobolus spicifer, Bipolaris spicifera, Curvularia spicifera, Myrothecium roridum, Rhizoctonia solani and/or Stemphylium solani)

• Alternaria Leaf Spot (Alternaria macrospora or Alternaria alternata) -- (Additional information 1 and 2)
• Cercospora Leaf Spot (Mycosphaerella gossypina)
• Phomopsis Leaf Spot (Phomopsis spp.)
• Rhizoctonia Leaf Spot (Rhizoctonia solani) -- (Additional information 1)

Lint Contamination (caused by Aspergillus flavus, Nematospora spp. and/or Nigrospora oryzae)

Mildew

• Areolate Mildew (caused by Mycosphaerella areola) -- (Additional information 1 (page 4))
• Grey Mildew (caused by Ramularia areola)
• Powdery Mildew (caused by Leveillula taurica, Oidiopsis sicula, Oidiopsis gossypii and/or Salmonia malachrae) (Additional information 1)

Root Rot

• Charcoal Rot (caused by Macrophomina phaseolina) -- (Additional information 1 and 2)
• Phymatotrichum Root Rot (caused by Phymatotrichum omnivorum) -- (Additional information 1 and 2)
• Sclerotium Stem and Root Rot or Southern Blight (caused by Sclerotium rolfsii or Athelia rolfsii)
  
  (Additional information 1 and 2)

  Texas Cotton Root Rot (caused by Phymatotrichopsis omnivora)
  

  (Additional information 1, 2, 3, 4, 5, 6, 7 and 8)

Rust

• Cotton Rust (caused by Puccinia schedonnardi)
• Southwestern Cotton Rust (caused by Puccinia cacabata) -- (Additional information 1, 2 and 3)
• Tropical Cotton Rust (caused by Phakopsora gossypii)

Seedling Disease Complex (additional information 1, 2, 3, 4, 5 and 6)

Ascochyta Blight (caused by Ascochyta gossypii) -- (Additional information 1 and 2)

Black Root Rot (caused by Chalara elegans) -- (Additional information 1)

Anthracnose (caused by Colletotrichum gossypii) Southworth -- (Additional information 1)

Fusarium Wilt (caused by Fusarium oxysporum) -- (Additional information 1, 2 and 3)

Pink Boll Rot or Seedling Blight (caused by Glomerella cingulata)

Pythium -- (Additional information 1, 2 and 3)

(caused by Pythium aphanidermatum)

(caused by Pythium debaryanum)

(caused by Pythium heterothallicum)

(caused by Pythium irregulare)

(caused by Pythium polytylum)

(caused by Pythium splendens)

(caused by Pythium sylvaticum)

(caused by Pythium ultimum) -- (Additional information 1, 2 and 3)

Rhizoctonia (caused by Rhizoctonia solani) -- (Additional information 1, 2, 3 and 4)

Sheath Blight (caused by Thanatephorus cucumeris) -- (Additional information 1)

Thielaviopsis (caused by Thielaviopsis basicola) -- (Additional information 1, 2, 3 and 4)

Verticillium Wilt (caused by Verticillium dahliae) -- (Additional information 1, 2, 3, 4, 5, 6, 7, 8 and 9)

NEMATODES, PARASITIC -- (Additional information 1, 2 and 3)

• Lance, Columbia nematode (Hoplolaimus columbus) -- (Additional information 1 and 2)
• Reniform nematode (Rotylenchulus reniformis) -- (Additional information 1)
• Root-knot nematode (Meloidogyne incognita) -- (Additional information 1, 2, 3 and 4)
• Sting nematode (Belonolaimus longicaudatus) -- (Additional information 1)

VIRAL DISEASES and Graft Transmissible Pathogens [GTP]

• Abutilon Mosaic or Malvaceous Chlorosis Virus (transmitted possibly by whitefly Bemisia tabaci)-- (Additional information 1 and 2)
• Anthocyanosis (transmitted possibly by cotton aphid Aphis gossypii)
• Blue Disease (transmitted possibly by cotton aphid Aphis gossypii)
• Leaf Crumple or Leaf Curl (transmitted possibly by whitefly Bemisia tabaci) -- (Additional information 1 and 2)
• Leaf Mottle (suspect virus (etiology unknown))
• Mosaic (suspect virus (etiology unknown))
• Terminal Stunt or Bunchy Top (suspect virus (GTP; Cicadellidae associated))

PHYTOPLASMAL and SPIROPLASMAL DISEASES

• Phyllody (suspect phytoplasma)
• Small leaf (suspect phytoplasma) -- (Additional information 1)

Other Disease Related Links