This malady can refer to yellowing leeks, weakening plants quickly (Java: ngoser).
Name of disease: wilt disease, ngoser, ngoler, wilt, stem rot, stem rot, root rot
Cause: Fusarium sp
This weakening malady is caused by soil-borne fungi. There square measure several soil-plant plant diseases in garlic with completely different symptoms caused by species of the genus Fusarium. however garlic growers square measure at home with ngoler (root rot). This malady is caused by Fusarium proliferatum, Fusarium culmorum & Fusarium oxysporum. wilt disease attacks the tubers from all-time low up, like white rot, however, takes place a lot of slow and doesn’t develop the sclerotia that are characteristic of white rot.
Garlic plants littered with fusarium attacks square measure simply uprooted from the bottom
Common symptoms of this malady seem yellowing (like aging prematurely). the ideas of the leaves of infected plants flip yellow and so brown once the symptoms purpose downward toward the bulbs. typically ruby color changes will seem on the cloak of tubers of extremely infected garlic plants at the start of the season. throughout very popular and dry conditions infected plants wither and tubers seem fluid and brown. typically roots rot from all-time low.
Severely infected plants square measure simply far from the soil once force, feat basal plates and plant disease. typically Saprolegnia ferax will seem on the bulb and infrequently associate orange mass of spores seems on the undersurface of the decayed bulb. Tubers that seem to be symptom-free at harvest however square measure infected will rot in storage, however, there’s no proof that the malady spreads from one tuber to a different throughout storage.
This malady spreads in dampish and heat soil conditions. At temperatures near to 25-28ºC morbific spores in germinating soil, infect the developing tubers and also the malady becomes a lot of common and severe. as a result of this malady thrives beneath high soil temperatures, this malady sometimes seems in middle to late summer.
Abundant mass of spores seem orange to salmon round the base of root roots infected with F oxysporum f sp cepae
This malady will infect red onions or garlic bulbs directly at each stage of plant growth, even in healthy plants. However, the best probability happens once the roots, tubers or the bottom square measure confusion by insects, nematodes or alternative pathogens. In garlic, the malady is extremely similar and is usually related to plant disease thanks to nematode worm attacks and conjointly due to onion caterpillars.
Breaking the malady Cycle:
This malady is effectively managed by crop rotation with non-host plants for ± four years
Land solarisation (see the advantages of land solarisation for the management of soil-borne diseases)
Planting forms of onions that square measure proof against this malady.
Plants that square measure attacked square measure uprooted and so collected to be burned.
Control by providing biological agents with active ingredients Thrichoderma sp and Gliocladium sp. (See Thrichoderma edges for agents) One formulation of this biological agent is MOSA GLIO. the way to do one bag (100gr) MOSA GLIO mixed with compost to 25-50 kilo, allowed to face for one week and so unfold in beds of a thousand money supply. (See the way to apply the MOSA GLIO biological agent)