bulb rot

      widespread disease that can infect all flower and crop bulbs and is caused by a variety of fungi and a few bacteria. Shoots fail to emerge or leaves are stunted, yellow to reddish or purplish, and they later wilt and die; roots, usually few, are discoloured and decayed. The rot often starts at the bulb base (root plate), progressing upward and outward. Fungal rots are usually dry to spongy or powdery and moldy; bacterial rots are commonly moist, soft to mushy, and foul-smelling. The rot often progresses rapidly during storage in warm, humid places.

      The control of bulb rot includes the use of disease-free bulbs; proper planting; careful digging and rapid but thorough curing of bulbs before storage; use of varieties resistant to fungal rots; avoidance of overwatering, overcrowding, and overfertilizing; and rotation with nonbulb plants. Nurserymen frequently treat bulbs before sale, using a hot water-fungicide soak.

* * *

Universalium. 2010.

Look at other dictionaries:

  • dry rot — 1. Plant Pathol. a. a decay of seasoned timber, resulting in its becoming brittle and crumbling to a dry powder, caused by various fungi. b. any of various diseases of plants in which the rotted tissues are dry. 2. any concealed or unsuspected… …   Universalium

  • neck rot — noun : a disease of onions caused by a fungus of the genus Botrytis and marked by rotting of the leaf cluster just above the bulb …   Useful english dictionary

  • Plant disease symptoms — ▪ Table Plant disease symptoms description and causes examples prenecrotic symptom expression that precedes the death of cells or the disintegration of tissues water soaking a water soaked, translucent condition of tissues caused by water moving… …   Universalium

  • Burkholderia gladioli — Taxobox color = lightgrey name = Burkholderia gladioli regnum = Bacteria phylum = Proteobacteria classis = Beta Proteobacteria ordo = Burkholderiales familia = Burkholderiaceae genus = Burkholderia species = B. gladioli binomial = Burkholderia… …   Wikipedia

  • ГНИЛЬ ЛУКОВИЦ ДИПЛОДИОЗНАЯ ЛУКА, ЧЕСНОКА — англ.bulb rot of onion (Diplodia); dry rot of onion (Diplodia) нем.Zwiebelfäule (Diplodia) франц.pourriture des bulbes de l oignon et de l ail (Diplodia) возбудитель:Diplodia natalensis Evans см …   Фитопатологический словарь-справочник

  • ГНИЛЬ ЛУКОВИЦЫ (ДОНЦА) ФУЗАРИОЗНАЯ ЛУКА, ЧЕСНОКА — англ.basal rot of onion; bulb rot of onion (Fusarium) нем.Zwiebelkuchenfäule (Fusarium) франц.pourriture fusarienne des bases des bulbes de l oignon et de l ail возбудитель:Fusarium oxysporum Schleoht. f. cepae (Hanazwa) Sn. et Hans. см …   Фитопатологический словарь-справочник

  • ГЕЛЬМИНТОСПОРИОЗ ЛУКА, ЧЕСНОКА — англ.dry bulb rot of onion (Helminthosporium); helminthosporiose of onion нем.Helminthosporiose, Zwiebel; Zwiebelschwärze франц.helminthosporiose de l oignon et de l ail; suie des bulbes de l oignon et de l ail возбудитель:Helminthosporium… …   Фитопатологический словарь-справочник

  • ГНИЛЬ ЛУКОВИЦ РОЗОВАЯ ЛУКА, ЧЕСНОКА — англ.dry bulb rot of onion (Fusarium) нем.trockene Zwiebelfäule франц.pourriture sèche des bulbes de l oignon et de l ail возбудитель:Fusarium bulbigenum Cke et Mass.; Fusarium cepae Hanz. см …   Фитопатологический словарь-справочник

  • ГНИЛЬ ЛУКОВИЦ ФИТОФТОРОЗНАЯ ЛУКА, ЧЕСНОКА — англ.bulb rot of onion (Phytophthora) нем.Zwiebelfäule (Phytophthora) франц.phytophthorose de l oignon et de l ail; pourriture des bulbes de l oignon et de l ail (Phytophthora) возбудитель:Phytopthora parasitica Dast. см …   Фитопатологический словарь-справочник

  • Hippeastrum — Taxobox name = Hippeastrum image caption = A Hippeastrum cultivar in flower regnum = Plantae divisio = Magnoliophyta classis = Liliopsida ordo = Asparagales familia = Amaryllidaceae genus = Hippeastrum genus authority = Herb. subdivision ranks =… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.