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Croton leaf spot disease

Anthracnose Anthracnose, sometimes referred to as leaf spot or blight, is a bacterial disease that makes tan-colored dead spots on the croton plant's leaves. Cut off any infected foliage and avoid letting the leaves touch other plants, since this may spread bacteria spores Leaves with dry, irregularly shaped, brown necrotic areas

Fig. 2. Close-up of Xanthomonas leaf spot of croton shows vein-delimited spots with irregular water-soaked margin. DPI Photo Credit: Jeffrey W. Lotz Watery brown spots - An overwatered croton is prone to bacterial leaf spot diseases. They will manifest in the form of wet brown spots ringed with a yellow halo. These spots will expand and eventually join into larger brown or black patches The white spots in the photos are normal leaf imperfections. They are not symptoms of anything infectious. Crotons are prone to spider mite infestations. So do be vigilant in looking out for spider mites If the leaves of your Croton Petra are turning brown and feeling crispy, the most likely cause is improper watering habits and lack of humidity. However, f you see small brown spots trimmed in yellow, your plant might have a Leaf Spot Disease. How to fix it

Garden Guides Croton Disease

Bacterial leaf spot Croton plantsdb - Plant Disease

  1. Thank your for including photos. The brown patches appear to be leaf spot, a disease that may be bacterial or fungal. First, isolate the plant, so others are not nearby. Remove all affected leaves and dispose of them in the trash. Sanitize your pruners. Apply a broad spectrum bio-fungicide to address both types of leaf spot
  2. utes.; Underwatering can also cause leaf drop on croton plants
  3. Croton Plant Care and Maintenance (Indoor and Outdoor) Croton is a striking tropical plant, ideal for growing in warm regions where the temperature ranges between 60°F (15°C) and 70°F (21°C). Suitable for growing both inside your house and outside, many believe it to be a high-maintenance plant

Downy mildew is a fungal disease spread by airborne spores. Symptoms include tiny spots on foliage or leaf distortion, and in severe cases, dropped leaves. Downy mildew is more common in.. Croton petra are great to be potted as indoor plants if cared for and looked after on a daily basis. Normally, they grow up to 10 feet tall. Some of the factors that contribute to successful growth include the type of Croton you're growing, whether you are growing them inside or outside or what pots you select for these aesthetic leaf plants Croton plants are popular indoors and outdoors, but they can also be confusing at times. Most people tend to get especially confused when it comes to croton watering, as the usual routines often don't seem to work.. The reason for this is actually quite simple

Studies On Leaf Spot Disease Of Croton: Codiaeum Variegatum L, Electronics Packaging Forum: Volume Two (Volume 2) James E. Morris, The Ladies Help To Spelling. By James Robertson, School-master In Glasgow. James Robertson, Supplementary Notes On American Menispermaceae. VIII. A Generic Survey Of The American Triclisieae And Anomospermeae (Memoirs Of The New York Botanical Garden, Volume 22(2. Croton Plant Care Basics . Soil. Luckily, Crotons are not particularly fussy about soil. Generally speaking, Croton plants do best in rich, well-draining soil.. Crotons feel comfortable in neutral soil, which is soil with a pH level between 6.6 and 7.3.If you are unsure about soil pH, you can use a soil meter to determine the pH level Croton Petra plants can get various diseases, so step one is figuring out which one it is. Some conditions are curable, but others like bacterial leaf spots aren't. It's better to get rid of infected plants and clean the pots. Water Correctly. Buy a moisture meter. The device is one of the easiest ways to prevent over or under-watering.

Why Are My Croton Leaves Drooping? (And How to Fix It

Images of croton plant and pictures. Click here to see all articles about Croton. Amazing Croton Plant: 1 Life Story of Getting Acquainted with Vegetable Life, or 12 Secrets of Professional Stuff's Growing Conditions & Care. When I saw the tropical croton petra plant for the first time, I was amazed by a variety of its leaf types and colors Croton plants are tropical houseplants known for their colorful variegated foliage. Croton leaves come in a wide variety of colors, color combinations, leaf shapes, and leaf sizes depending on the variety, and are commonly found covered in green, yellow, orange, and red splashes, splotches, stripes and streaks Buy Studies on Leaf Spot Disease of Croton: Codiaeum variegatum L. Blume on Amazon.com FREE SHIPPING on qualified order

Leaf spot diseases weaken trees and shrubs by interrupting photosynthesis. Most leaf spot diseases affect only a small percentage of the tree's overall leaf area, and are a minor stress on the health of the tree. Leaf spot diseases should be taken seriously if they result in moderate to complete leaf loss two to four years in a row Black Spots Under Croton Leaves < Back. Question: 1 part rubbing (isopropyl) alcohol and a squirt of liquid dish soap. Then, spray that solution so that all leaf and stem surfaces on your Croton are dripping wet. This is a messy process but it is the only way to get to all of the scale insects. If you are thorough, one treatment is usually. Diseases. There are a few diseases which can strike your crotons. Crown gall, leaf spot, oedema, and white powdery mildew are by and large the most prevalent. Oedema is caused when your croton is taking in more water through its roots than it can actually handle, and looks like blistering on the leaves. Reduce the regularity of your watering. Xanthomonas leaf spot. Xanthomonas leaf spot appears brown-blackish and is found between the leaf veins. To prevent this disease the use of copper-based bactericide will help. Once the plant has contracted this disease the only measure is to destroy the plant. Stem gall and canker. Crotons that are infected with this disease show symptom of the.

If the leaves of your Croton Petra are turning brown and feeling crispy, the most likely cause is improper watering habits and lack of humidity. However, f you see small brown spots trimmed in yellow, your plant might have a Leaf Spot Disease Fungal spots, blights, and blotches. General Recommendations: This is a broad group of plant diseases, caused by fungi, that is commonly found on many garden plants. Leaf spots are classically thought of as tan to brown, local lesions with distinct borders or delimited borders on leaves or flower parts. When the spots become numerous and begin. The croton (Codiaeum variegatum) appears to have it all: colorful foliage, nearly limitless leaf forms, and even a cultish following.But these plants have a drawback: They're difficult to please indoors. In their native habitats, crotons like humid, warm conditions with dappled light and plentiful water. The primary challenge when growing them indoors is maintaining the ideal temperature.

White, crusty eruptions may form along the leaf veins or gall-like structures can develop under leaves with yellow corresponding spots on the upper leaf surface. Treating Edema. Because it's not a disease, there are many ways to treat edema, depending on the cause Also known as Sun-Spot Croton, it features bright green oval-shaped leaves sprinkled with golden yellow spots. You can also grow it as a houseplant, but it needs full exposure to bright indirect sunlight. Growing Tip: Plant this beautiful variety in bright light for vibrant colored leaves. Keep the plant away from the harsh afternoon sun. 16 Black spot leaf disease shows itself first with black spots appearing on the leaf, then with rings of yellow as the spots grow, until the leaf turns entirely yellow and then falls off. If left untreated, black spot spreads rapidly and weakens plants severely. As a soil-borne fungus, it's present at all times, even deep winter

Codiaeum variegatum - JungleKey

I bought a croton more than three years ago. Everything was good with it: very beautiful, well-grown and not sick. I enjoyed the vivid color of its foliage when it suddenly began to dry up and started losing leaves. There were no pests, just leaves began to fade around the perimeter and then fell off. I knew that normally it drops leaves twice a year Croton Disease (Crown Gall) Signs of Trouble. Thick swollen growths develop on the stem and leaf veins. Bacterial Leaf Spots Signs of Trouble. humid climate. One pronounced difference to note is the leaf shape. The croton mammy has long, vibrantly colored leaves which curl as they grow, but the croton petra has an oval-shaped leaf with. This heavy blooming shrub is an old time favorite in south Florida. If unpruned, Ixora coccinea can reach up to twelve feet in height. Ixora are native to s.. Black Spot. Problem: Black spot is a fungal disease commonly found on roses, but also on other flowers and fruits. While it doesn't kill plants outright, it weakens them and makes them susceptible to other problems. In cool, moist weather, small black spots appear on foliage, which starts to turn yellow and eventually drops off

Houseplants forum→White and red spots on Croton leaves

Downy mildew is a fungal disease spread by airborne spores. Symptoms include tiny spots on foliage or leaf distortion, and in severe cases, dropped leaves. Downy mildew is more common in. Studies On Leaf Spot Disease Of Croton: Codiaeum Variegatum L, Victorian Literature And Culture (Introductions To British Literature And) Maureen Moran, The History Of Jazz (American Mosaic: African-American Contributions) Sandy Asirvatham, Natwest Trophy Record Book 1963-1996 Richard Isaac Croton macrostachyus has a long taproot and numerous side-roots, which makes it adapted to dry climates. Diseases and pests In Ethiopia the leaves of Croton macrostachyus are attacked by a leaf spot caused by the fungus Cylindrosporium sp. The seeds are often damaged by insects while still on the tree Powdery mildew is a fungal disease that results in a powdery gray or white coating on the leaves and stems of infected plants.   A powdery mildew infection generally starts out as a few spores on the leaves but quickly spreads, forming a thick coating of fungi. It can eventually cause yellowing the leaves and premature leaf drop

Sycamore Anthracnose

Croton plants are popular indoors and outdoors, but this tropical plant can also be confusing at times. Most people tend to get especially confused when it comes to croton watering, as the usual routines often don't seem to work. The reason for this is actually quite simple. Remember how you learned to water plants in [ 10. Common Croton Plant Pests And Diseases. Healthy croton plants are fairly resistant to most common houseplant pests and diseases, however they can still be affected by a few if their ideal care conditions are not met. Mealybugs, thrips, scale insects, or spider mites can affect croton plants on rare occasions Fungal Leaf Diseases. Alternaria leaf spot causes large brown spots with yellow halos, which spread and cause premature leaf drop. The disease also affects petioles and stems of Schefflera trees. Phytophthora leaf spot resembles Alternaria, but begins on the lower leaves first Croton Anthracnose leaf and fruit spot, Bacterial leaf spot and blight 144254 Liquid Copper Conc pt 4-811B24 BK.indd 4 8/13/18 2:30 PM. PG 5 Yucca species yucca Leaf spot (fungal) ORNAMENTALS: DISEASES CONTROLLED, LISTED BY PLANT Cont. 144254 Liquid Copper Conc pt 4-811B24 BK.indd 7 8/13/18 2:30 PM. PG Treat your plant with neem oil if it develops spots on the leaves. Brown or black spots on the leaves of your croton petra plant could mean that it has a disease called anthracnose, or leaf-blight. To cure this disease, spray the leaves of your plant with neem oil once a week until the problem clears up

Plant Care: What's Wrong With My Croton Petra? Bloomscap

Problems: Codiaeum variegatum plants have no serious insect or disease problems. Watch for scale, spider mites and mealybugs. root rots, leaf spots, spider mites, aphids, mealybugs; leaf fall from too cool, too wet or too dry. Fine webbing under the leaves and at leaf axils is caused by red spider mite, which is encouraged by warm, dry. the product to control listed diseases at a rate of 1.1 to 2.3 gallons of diluted spray per 1,000 ft2. For best control, start spraying before the disease is visible or when Croton Anthracnose leaf and fruit spot, Bacterial leaf spot and blight 145717 Liquid Copper RTS qt 4-814B24 BK.indd 6 9/21/18 12:08 PM. 285 - Page To propagate a croton plant, use a stem cutting that is 3-4 inches long and has 3 to 5 leaves. Dip the cut end of the cutting in an off-the-shelf rooting hormone and plant them in a small pot. Keep the soil moist, but not over watered. Cuttings will root in less than a month if temperatures stay between 70°-80°F Croton plants are semi-tropical and native to northern Australia, Malaysia, and the Pacific Islands. For vivid leaf color, plant croton in a spot that receives plenty of bright, indirect light. Planting Zones. Croton grows best in plant hardiness zones 10 and 11. Plant croton away from cool north winds Temperature and Humidity: Croton Plants prefer warm temperatures between 60-80 degrees and high humidity. These conditions encourage Leaf Spot Disease How to identify and treat Leaf Spot plant disease. See a picture of Leaf Spot disease and learn how to prevent leaf spot disease from attacking your plants. and powdery mildew Powdery mildew is a plant disease that puts a grayish white powder on.

• Apply farm yard manure or green leaf manure (Gliricidia maculate) at 10 t/ha or neem cake at 150 kg/ha. Yellow mosaic disease - Mungbean yellow mosaic virus (MYMV) Symptoms Initially small yellow patches or spots appear on green lamina of young leaves. Soon it develops into a characteristics bright yellow mosaic or golden yellow mosaic symptom Whether it is a bacterial disease or nutrient deficiency, it can be treated if you catch the reason early on! If the brown spots are minimal and limited to the leaves, it is not too late to save the plant. Let's have a look at the symptoms of Bacterial Leaf spots. The leaf blight in Anthurium leads to: Yellow lesions that darken into brown spots

Why are my croton leaves curling? - TreeHozz

mildew, black spot and rust Disease Shield Copper soap Croton Anthracnose leaf and fruit spot, Bacterial leaf spot and blight. Ornamental Plant Common Name Diseases Controlled Cordyline terminalis Ti plant Anthracnose leaf and fruit spot, Leaf spot (fungal) Chryptanthus specie Disease and harmful insects. Crotons are very susceptible to pest infection. It can be a worm, nematode, scaly insect and so on. Diseases often arise as a result of improper care, non-compliance with the temperature regime and irrigation mode Areca Palm Leaf Spot Cissus Species Grape Ivy Anthracnose Leaf and Fruit Spot, Botrytis Blight, Downy Mildew, Powdery Mildew, Rhizoctonia Blight Codiaeum Variegatum Croton Anthracnose Leaf and Fruit Spot, Bacterial Leaf Spot and Blight Cordyline Terminalis Ti Plant Anthracnose Leaf and Fruit Spot, Leaf Spot (Fungal) Chryptanthus Species Bromeliad 38 a. Croton leaf spot b. Crown of Thorns leaf spots c. Aphelandra necrotic zones d. Geranium leaf spots Figure 3 2. Disease caused by Xanthomonas axonopodis pv. poinse t ti icola C roton (a), crown of thorns (b), geranium (c), and aphelandra (d) (Photophraphs by William Rockey) PAGE 39 39 Figure 3 3

Fertilizer. Fertilize a croton monthly in the spring and fall and every two weeks in the summer with a basic houseplant food diluted to 1/2 the recommended strength. If your Croton is in a bright sunny spot, but the new leaves are coming in green, reduce the amount of plant food. Too much fertilizer Diseases to Watch For: Croton petra plants are susceptible to the bacterial diseases crown gall and xanthomonas leaf spot, and the fungal diseases anthracnose and stem gall and canker. Both crown gall and stem gall and canker present with swelling on the plant's stems, leaf veins and roots and require the pruning of all infected parts in

Why Is My Croton Plant Dropping Leaves (And How To Fix It

Among the diseases of Croton are the following: Anthracnose. Characterized by the presence of ash-gray or reddish spots on the leaf plates, after which the leaves fall. Affected plants must be isolated and sprayed with Cumulus, Euparin or Fundazol. Root rot. The first sign of this disease is paleness and yellowing of leaf plates This is a list of diseases of croton (Codiaeum variegatum) plants. Bacterial diseases. Bacterial diseases; Common name: Scientific name: Crown gall Common name: Scientific name: Anthracnose Glomerella cingulata: Bacterial leaf spot Xanthomonas campestris: Stem gall and canker Nectriella pironii. Kutilakesa pironii [anamorph] References. Small brown spots trimmed in yellow: Your Croton may have a leaf spot disease. It generally is a fungal disease, remove the infected leaves, avoid wetting the foliage when watering the plant's soil, and increase the air circulation around the plant. Typically, these adjustments take care of the fungal disease

Cordyline (Ti Plant) Disease

Croton Scale Control. The new croton scale was first collected by Lynn Howerton (Florida Department of Agriculture and Consumer Services- Division of Plant Industry plant inspector) on the stems of a croton (Codiaeum variegatum) since then samples have been collected from 21 Florida Counties it is now believed to established in 5 counties Broward, Miami-Dade, Palm Beach, Lee and Collier counties Croton are usually pest and disease free, though they are susceptible to common houseplant pests such as mealybugs, spider mites, My is a Var Croton. One Leaf has a large spot on it. What do yall Think this could be. Thank u. croton drooping leaves. Submitted by norma lewis on July 14, 2020 - 9:19pm This is a list of diseases of croton (Codiaeum variegatum) plants. Bacterial diseases. Bacterial diseases; Common name: Scientific name: Crown gall Agrobacterium tumefaciens: Fungal diseases. Fungal diseases; Common name: Scientific name: Anthracnose Glomerella cingulata: Bacterial leaf spot Xanthomonas campestris: Stem gall and canker. CERCOSPORA LEAF SPOT ECONOMIC IMPORTANCE • This is an important disease of black gram and green gram and it usually occurs in a severe form, causing heavy losses in yield particularly when humidity is high. SYMPTOMS • Small, circular spots develop on the leaves with grey centre and reddish brown margin Plant Diseases. Disease fungi take their energy from the plants on which they live. They are responsible for a great deal of damage and are characterized by wilting, scabs, moldy coatings, rusts, blotches and rotted tissue. This page is designed to help identify some of the more common plant diseases and provides earth-friendly solutions (see.

Croton Production Guide - MRE

Though these houseplants are relatively easy to care for, occasionally, there are issues that may cause you to panic as a gardener. Croton leaf drop can be caused by numerous underlying issues, including insufficient sunlight, cold weather, over-or underwatering, or even diseases and pests. The Croton Petra features large, green leaves with brightly colored veins. You can expect to see a mix of colors in this plant's leaf veins including, red, orange, yellow, and occasionally pink to purple. Croton Petra Care. Croton Petras should be kept in loamy but well-draining soil. At least 4 hours of bright, indirect light is needed The croton indoor plant has a reputation for being fussy, but in reality, if you know about caring for a croton houseplant properly, it can make for a resilient and hard-to-kill plant. Is Croton Plant Air Purifier? A popular houseplant, croton features wildly variegated leaves that often have more red, orange, yellow, or purple than green

Studies on Leaf Spot Disease of Croton by Tolulope Ewekeye

Leaf spot on okra plant stock image

Alternately, convey Croton indoors for wintry weather to use as a houseplant. You may additionally desire to hold your Croton Mammy as a houseplant all yr spherical. To get the excellent color and keep your plant at its healthiest. Make certain to provide it a vivid spot with lots of mild and the right amount of moisture Corynespora cassiicola was a devastating pathogen attributed to heavy leaf fall in susceptible clones of rubber (Hevea brasiliensis), in the mid-eighties in Sri Lanka. It is known to have a wide host range. This is the first report of C. cassiicola as a leaf pathogen of croton, Codiaeum veriegatum, an ornamental plant List of Croton diseases From Wikipedia the free encyclopedia. This is a list of diseases of croton (Codiaeum variegatum) plants. Bacterial diseases . Bacterial diseases; Common name Bacterial leaf spot : Xanthomonas campestris: Stem gall and canker : Nectriella pironii. Kutilakesa pironii [anamorph

Botrytis, another fungus that causes white spots on leaves. Botrytis is another disease, also quite common, caused by a fungus. Like powdery mildew, botrytis appears in humid and warm climates and appears in the form of gray or whitish areas of rot on the fruits and shoots. Fighting this fungus in plants is somewhat more difficult than eliminating powdery mildew or mildew and although. 1. Broad Leaf. This is the category in which we find 'Petra'. The leaves are broad and elliptical. This is generally a large croton category. 2. Interrupted Leaf. The leaf blade will taper down to the midrib for around an inch and then return back to the previous width. 3. Narrow Leaf

Codiaeum variegatum is a member of the Euphorbiaceae family (El-Quesni et al., 2016), one of the largest families of flowering plants, with about 7,000 described species (Macoboy, 1974; Magdalita et al., 2014).There are 17 accepted species names in the genus Codiaeum (The Plant List, 2013) from which all other cultivars arose as mutants or hybrids (Ogunwenmo et al., 2007) To control downy mildews, leaf and fruit spots, blights, and rust, use a solution of 0.5 to 2.0 fluid ounces of this product in a gallon of water. Ensure that all surfaces of Croton Diseases Controlled Anthracnose leaf and fruit spot, Bacterial leaf spot and blight Botrytis blight, Leaf spot (fungal Leaf Galls • Azalea • Camellia • Rhododendron •Leaves- swollen, curled, waxy and fleshy •Light green-later brown or black •Flowers may be pinkish Cylindrocladium •Holly- Leaf spot •Azalea- Root rot & leaf spot •Black discoloration and necrosis of roots and lower stems •Reddish orange structures Powdery Mildew Disease Mums. Some cultivars of regal or Martha Washington geraniums are very resistant, but leaf spots have been observed. Hardy, perennial geraniums can be non-symptomatic carriers of the bacteria. Sources of bacteria may include poinsettia, croton (Codiaeum variegatum), crown of thorns (Euphorbia milli) and zebra plant (Aphelandra squarrosa)

How to Cultivate Croton Plants Indoors | Gardener’s PathNONI (MORINDA CITRIFOLIA) PEST AND DISEASE IMAGE GALLERY

Fungal spots, blights, and blotche

In the United States, reports of Xanthomonas leaf spot on poinsettia have mostly been restricted to Florida. Management Cultural. Starting with clean planting material (seed, cuttings, or plugs) is essential for preventing outbreaks of bacterial leaf spot. Management of this disease once it occurs requires strict sanitation A croton's bright colors are its most recognizable feature, and these shades will vary from one croton variety to another, ranging from green and gold to blue-green and pink. While all mature crotons possess these vibrant colors, the leaves will darken as the plants age, eventually turning almost black

Symptoms Of Plant Diseases Plant Pathology Guidelines

Begin treatment 2 weeks before disease normally appears or when disease first appears, and repeat at 7 to 10 day intervals for as long as needed. Re-apply after rain Croton Anthracnose, Bacterial leaf spot and blight Devils Ivy Bacterial leaf spot and blight, Rhizoctonia blight Dieffenbachia Bacterial leaf spot and blight, Leaf spot. Cercospora leaf spot on maize -Cercospora zeae-maydis Stem rot on bell pepper-Macrophoma sp. Powdery mildew on False Verbena-Oidium sp. Galls on branches of Lansium domesticum -Aphelenchoides sp. Leaf spot on Mango -Alternaria sp. Fig rust -Cerotelium fici Leaf spot on Taro -Phy11osticta sp. Leaf spot on Taro -Curvularia sp / If your croton petra has brown or dry leaf tips, it is a clear sign that it needs more moisture.. Use our water calculator to personalize watering recommendations to your environment or download greg for more advanced recommendations for all of your plants. Keep this in mind when choosing the soil for your crotons and doing the watering It is easy enough to root a croton leaf (Codiaeum pictum): you can even do so in a glass of water. And the single leaf will develop a surprisingly robust root system. But to produce a new stem and, eventually, a complete plant, it would need an axillary bud. It is only from this bud that the plant can regenerate

3 Ways to Deal with Black Spot Leaf Disease - wikiHo

Crotons (scientific name for croton: Codiaeum variegatum) are stunning shrubs that grow to be five to six feet tall. The coloration is simply stunning, and it adds an exotic touch to your home or garden. The first time I brought home a croton plant I was thrilled at how it looked in my home, but shortly after the journey home, the plant began to drop its leaves Celery Septoria leaf spot; Centipedes; Cephaleuros - the plant-parasitic green algae; Cercospora diseases; Cercospora leaf spot and berry blotch of coffee; Cercospora leaf spot of beach morning-glory; Cercospora leaf spot of beet; Cercospora leaf spot of celery; Cercospora leaf spot of eggplant; Cercospora leaf spot of Plantago majo 2. Milk. Numerous studies have shown milk and/or whey to be even more effective at killing powdery mildew than chemical fungicides. In a 2009 study by the University of Connecticut, which tested a milk treatment of 40% milk and 60% water on plants infected with powdery mildew, the milk treatment provided significantly less disease than the untreated control, and the chemical treatment had.

The croton's bright colors can draw just the right amount of attention to any space it occupies. Though it has quite the reputation of being a fussy plant, in reality, Croton Plant Care Indoors, if done correctly, can make it one of the most resilient and hard-to-kill plants. Have a look at the different types of Crotons you can grow her Sooty mold forms a gray or black coating on leaves, tender stems or flowers. The mold may cover an entire leaf surface or appear in spots, depending on the severity of the problem. Although sooty mold doesn't penetrate the plant tissues, it can weaken it by blocking sunlight Spiraling Whitefly. Algal Leaf Spot (American Samoa) Fruit cracking. Beneficials. Mealybugs. Leaf miner. (found in Kosrae, Federated States of Micronesia) Rota (Northern Marianas) Pests and Diseases 7.5.3.2 Leaf spot. Leaf spot: The leaf spot of quinoa is a seed-borne disease and was first described by Vilca in 1972. Presently, leaf spot has become an important disease in the cultivation of quinoa in China (Feng, 2015). Aetiology: Ascochyta hyalospora (Cooke and Ellis Bacterial leaf spots (several bacterial genera) Watersoaked lesions, usually gray to dull-brown in color, frequently with angularshape and yellow halo. Can usually be seen on both upper and lower surface of the leaf. Leaf wetting, splashing water, usually more severe at temperatures in the 80-90 degree range