Powdery Mildew-Resistant Tomato Cultivars

The following tomato varieties have been bred to be resistant to powdery mildew, a fungal disease that affects tomatoes and many other plants. The primary symptom is powdery white spots on the leaves that get progressively bigger. The disease usually begins on the lower branches and moves up. The fungus likes cool, humid conditions and is more likely to become a problem during cloudy weather. The best way to prevent the occurrence of this disease is by planting cultivars that are resistant to it. I've listed four tomato varieties here.

Geronimo F1
Granadero F1
Massada F1
Striped Stuffer

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Leaf Mold-Resistant Tomato Cultivars

The following tomato varieties have been bred to be resistant to Leaf Mold, a common tomato plant disease.

Agatha
Apero F1
Bigdena
Favorita F1
First Blish
Geronimo F1
Golden Sweet F1
Growdena
Massada F1
Olivade F1
Panzer
Rapsodie
Sapho F1
Sweet Hearts
Toronjina F1
Trust

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Verticillium-Resistant Tomato Cultivars

Though not entirely immune, the following tomato varieties have been bred to be resistant to the verticillium fungus. Pictured: Big Beef F1.

Abe Lincoln Abuelo Ace 55 Agatha Agriset 8279 F1 Amelia VR F1 Andino NUN3149 Angelina F1 Applause Applegate F1 Arbason Ariset 334 Atomic Bambino F1 Basket Vee Beaufort F1 Beefmaster Better Boy F1 Better Bush BHN-1021 F1 BHN-189 BHN-268 BHN-410 BHN-444 BHN-543 BHN-585 BHN-586 BHN-589 BHN-602 BHN-640 BHN-762 BHN-768 BHN-783 BHN-826 F1 BHN-871 BHN-876 BHN-882 BHN-901 BHN-961 BHN-968 Big Beef F1 Big Bite Biltmore Bobcat Bush Celebrity Bush Champion II Bush Early Girl Bush Goliath Cabernet F1 Cambell's 33 Capaya Carnival Caruso Celebrity F1 Celebrity Supreme Champion Champion II Cherry Blossom Classica Clermon Cluster Goliath Cobra F1 Cordova F1 Corona Ps Cortez Country Tast Crista F1 Dafel Debut Defiant PhR F1 Delicious Early Cherry Early Girl F1 Early Goliath El Cid F1 El Patron El Senor Emperador F1 Empire Estiva Fabulous Fantastic F1 Fantom Finishline First Blish First Pik Five Star Grape F1 Floralina Florida 47 F1 Follia Geronimo F1 Giant Valentine Glamour Gold Nugget Golden Girl Golden Honey Bunch Golden Milano Granadero F1 Grandeur Grandma's Garden Grandma's Pick Granny Smith Gremlin F1 Growdena Halcon Hard Rock Health Kick Heartland Heinz 1439 VFA

Heinz 2653 Hermosa HM 8849 Homesweet Husky Cherry Red Husky Red F1 Hy-Beef 9904 Hybrid 46 Impacto Incas Italian Goliath Jelly Bean Red Jelly Bean Yellow Jet Star F1 Jetsetter Joker Jolly Elf F1 JTO-99197 Jumbo VF Kada Keepsake Lemon Boy Linda Lunchbox Manitoba Margherita Marglobe Select VFA Margo Mariana Marmande Marmara Massada F1 Maxifort Medfo Mini Charm MiReina Miroma Monica F1 Moreton Mr. Ugly Mt. Crest Mt. Delight Mt. Fresh Plus F1 Mt. Glory Mt. Magic Mt. Pride Mt. Spring Murie NC 50-7 New Girl F1 Northern Delight Ofri Old Fashioned Goliath Olivade Orange Sunshine Oregon Spring P418 APT 533 Panzer Paragon Park's Beefy Boy Park's Whopper Pear Goliath Picus Pik Red F1 Pik Rite Pilavy Pilgrim Pink Brandymaster Pink Girl F1 Pitenza Plum Crimson F1 Plum Regal Polbig F1 Primo Red F1 Puebla Qualit 21 Qualit 23 F1 Rapsodie Ravello Reba Red Brandymaster Red Candy Red Defender Red Delight Red Pride Redline RFT 6153 Rocky Top Roma Royal Mountie Rutgers 39 Sahel Samurai F1 San Marzano 168 F1 Sapho F1 Scarlet Red F1 Scout Show Girl Siletz Silverado F1 Small Fry Smarty Solar Fire F1 Solar Set R Sophya F1 Spitfire Springfield STM 0225 STM 5811 Sun Gold F1

Sun King Sun Leaper Sun Pride Sunbeam Sunbrite F1 Sunchief Sunguard Sunkist F1 Sunmaster Sunoma Sunray Sunrise Sunsation F1 Sunshine Sunstart Super Bush Super Marzano F1 Super Sioux Super Sweet 100 Supersonic F1 Supersteak Sweet Chelsea F1 Talladega Tolsoi Tomande Tomosa Torbay Torero F1 Tormenta Toro F1 Tough Boy 8 F1 Tough Boy 93 F1 Tribeca Trinity F1 Tropic Boy F1 Trust TY-40 F1 TY-75 F1 Ultimate Opener Ultra Girl Valley Girl F1 Valleycat Veeroma Veronica Victoria Supreme Viva Italia F1 Window Box Roma Wolverine Yellow Brandymaster Yellow Pear

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Verticillium Wilt

An Intro to Verticillium Wilt

Verticillium Wilt is a fungal disease affecting the vascular system of host plants. It is caused by three species of the Verticillium genus. Tomatoes, potatoes, eggplants, and peppers are most vulnerable. The disease obstructs the flow of nutrients through the xylem, resulting in wilting of the leaves and stem and eventually the death of the plant. Symptoms look very similar to Fusarium Wilt, but verticillium can kill small plants very quickly. Tissue discoloration will be evident if the stem of an infected plant is cut.

CONDITIONS

Verticillium is even hardier than Fusarium and thrives at cooler temperatures. It can survive very cold--even freezing--conditions.

TRANSMISSION

The fungus is transmitted through contact with infected soil or water and through root-to-root contact. Some types of insects can also spread the disease from plant to plant.

MANAGEMENT

Like Fusarium Wilt, there is no practical cure for an infected plant. The fungus continues to live in the soil after a plant is dead and can infect any new plants it makes contact with. Farmers often use crop-rotation as a strategy for minimizing the spread of verticillium. Verticillium does not tolerate long periods of flooding, and continued drowning of soil over a long period of time might be one way of ridding it of the fungus.

AVOIDING VERTICILLIUM

The best way to avoid verticillium is to plant cultivars that have been bred to resist it. CLICK HERE for a complete list of Verticillium-Resistant Tomato Cultivars.

NOTABLE VERTICILLIUM SPECIES

V. dahliae, V. albo-atrum, and V. longisporum are the three well-known species.

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Fusarium-Resistant Tomato Cultivars

Though not immune, the following tomato varieties have been bred to be resistant to the Fusarium fungus, giving them an edge in Pohnpei's hot, ultra-humid climate. Pictured: Golden Rave F1

Abe Lincoln Ace 55 Agatha Apero F1 Arbason F1 Bambino F1 Basket Vee Beefmaster Better Bush Big Girl Bush Goliath Caruso Celebrity Champion Conestoga F1 Cupid F1 Dafel Emperador F1 Fantastic F1 Geronimo F1 Giant Valentine Golden Milano Cherry Golden Rave F1 Granny Smith Grapette Hybrid Hardrock Heinz Homestead Imperial Jet Star F1 Jubilee Jumbo VF Lemon Boy Lunch Box

Manalucie FST Margherita Marglobe Select VFA Marion Marmande Marmara Monarca Montesino F1 Mountain Belle Mountain Delight Mountain Gold Mt. Pride Olivade F1 Palenque Picus Pitenza Polbig F1 Red Candy Roma Sapho F1 Smarty Sun Cherry Extra Sun King Sunkist F1 Sunny Goliath Sunray Sunrise Super Fantastic Super Sioux Super Sweet 100 Supersonic F1 Supersteak Suzanne F1 Sweet Chelsea F1

Sweet Hearts Sweet Million Sweet Mojo Sweet Orange Toronjina F1 Ultimate Opener Ultra Girl Veeroma Viva Italia

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Fusarium Wilt

An Intro to Fusarium Wilt

Fusarium Wilt is a fungal disease affecting the vascular system of host plants. It is caused by the Fusarium oxysporum fungus. Tomatoes, beans, sweet potatoes and bananas are particularly susceptible. The disease causes wilting and eventually death of the plants leaves, starting near the bottom and moving up. The plant becomes stunted, the leaves yellow and fall off, and eventually the entire plant may die.

CONDITIONS

Fusarium oxysporum can survive most climates, but is particularly active in warm, moist conditions.

TRANSMISSION

The fungus is transmitted to the plant through contact with soil and can spread to other plants on gardening tools and fingers and by splashing water. The disease starts at the roots and moves up through the plant.

MANAGEMENT

On a small gardener's scale, there are few practical solutions to the problem of a Fusarium infection. The fungus can live in soil for a long time and that soil should not be used again. There are fungicides that can eradicate the disease from the soil, but they may be difficult or impossible to acquire in a small place like Pohnpei. Diseased plants can infect nearby plants, spreading the fungus throughout your garden. Affected plants will have decreased fruit yield if they survive at all.

AVOIDING FUSARIUM

It may not be completely avoidable, but you can minimize the risk by planting in quick-draining soils, keeping plants out of the elements, and not over-watering. Even better, use plant cultivars that have been bred to be resistant to the pathogen. CLICK HERE for a complete list of Fusarium-Resistant Tomato Cultivars.

NOTABLE FUSARIUM SUB-SPECIES

F. oxysporum lycopersici is the sub-species that affects tomato plants.

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