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On adult leaves, the symptoms appear the same as the ones left by other abiotic or biotic stressors so diagnosis is not as straight forward. They include large irregular leaf lesions which are brown to black in watermelon and reddish brown in melon. Bacterial fruit blotch lesions spread along main midrib in adult leaves. [5]
Lemon sieve-tube necrosis Unknown, but hereditary Lime blotch = wood pocket Inherited chimeral agent Membranous stain Cold temperatures Mesophyll collapse Unknown Oleocellosis Physiological Postharvest pitting Physiological Puffing Physiological Rind breakdown Physiological Rind staining Physiological Rind stipple of grapefruit Environmental
Stem necrosis is generally absent. The cucumber fruit itself will not display lesions. [1] In melons, such as rockmelon, muskmelon, and cantaloupe, MNSV produces necrotic lesions on the leaves and/or cotyledons. The roots will also exhibit necrotic lesions. The melon fruit decreases in size and displays necrotic spots on the rind as well.
Bacterial diseases; Angular leaf spot Pseudomonas amygdali pv. lachrymans: Bacterial fruit blotch/seedling blight Acidovorax avenae subsp. citrulli = Pseudomonas pseudoalcaligenes subsp. citrulli: Bacterial leaf spot Xanthomonas campestris pv. cucurbitae: Bacterial rind necrosis Erwinia spp. Bacterial soft rot: Erwinia carotovora subsp ...
Rinds are lower in sugar and higher in fiber than the flesh of a watermelon, Meyer-Jax says, “When eaten with the rest of the melon, it helps slow down sugar absorption in the gut and mellows ...
Pseudomonas syringae overwinters on infected plant tissues such as regions of necrosis or gummosis (sap oozing from wounds on the tree) but can also overwinter in healthy looking plant tissues. In the spring, water from rain or other sources will wash the bacteria onto leaves/blossoms where it will grow and survive throughout the summer. [16]
Some folks swear by this method: If you thump the rind of a watermelon and it sounds hollow, then it's ripe, juicy, and ready to eat; if the thump produces a higher-pitch ringing sound, it's ...
Bacterial soft rot on taro (Colocasia esculenta) Bacterial soft rots are caused by several types of bacteria, but most commonly by species of gram-negative bacteria, Erwinia, Pectobacterium, and Pseudomonas. It is a destructive disease of fruits, vegetables, and ornamentals found worldwide, and affects genera from nearly all the plant families.