stem canker การใช้

• On chrysanthemums, snapdragons and roses, it causes stem cankers.
• Stem cankers form from the disease moving systemically through the plant.
• Additional stem canker and dieback are caused by the pathogen.
• Stem cankers develop 1 to 3 years after branches die.
• Some of the symptoms of stem canker are branch splitting, gummosis and bark blistering.
• Stem cankers are best treated by pruning out infection as soon as it is noticed.
• Relatively recently, Stem cankers were observed on sunflower plants growing in a field in Illinois.
• These include leaf disease, stem canker, wood rot, and root rot-causing fungi.
• This colonization leads to the invasion and destruction of the stem cortex, which leads to the formation of stem canker.
• This suggests that there may be several species or biotypes of " Phomopsis " that cause stem canker worldwide.
• Cornus sericea is a tougher shrub, less prone to forming stem cankers, and handles the warmer end of the planting range better.
• The stem canker ( " Nectria galligena " ) produces depressed areas with concentric bark rings that develop on the trunk and branches.
• Stems can be affected by several canker diseases, the most commonly seen of which is stem canker ( " Leptosphaeria coniothyrium " ).
• The host plant will begin to exhibit secondary symptoms such as stem canker, wilting, and chlorosis as " Phytophthora sojae " continue to reproduce.
• Interestingly, it has been observed that isolates from stem canker in the United States will readily form perithecia when grown in culture, but those from Europe will not.
• In England, this is called purple patch . " R . solani " can also cause hypocotyl and stem cankers on mature plants of tomatoes, potatoes and cabbage.
• In addition, phoma stem canker can also be spread by infected seeds when the fungus infects the seed pods of " Brassica napus " during the growing season, but this is far less frequent.
• Other diseases caused by members of this order include stem canker of soybeans ( " Diaporthe phaseolorum " ( Cooke & Ellis ) Sacc . and its varieties ), stem-end rot of citrus fruits ( " Diaporthe citri"
• "Phomopsis " stem canker of sunflower is a serious disease caused by " Phomopsis helianthi " ( sexual stage = " Diaporthe helianthi " ), it was first observed in Europe in the late 1970s followed by U . S . in 1980s.
• Unlike other plant pathogens, rust usually affects healthy and vigorously growing plants, so the infection is limited to plant parts such as leaves, petioles, tender shoots, stem, fruits, etc . Perennial systemic infection may cause deformities such as growth retardation, witch's broom, stem canker, hypertrophy of the affected tissues or formation of galls.