White Root
disease Rigidoporus microporus
White root disease caused by a fungus Rigidoporus microporus (Rigidoporus lignosus). These diseases result in damage to plant roots. Symptoms on leaves appear pale yellow and the edge or tip of the leaf folded into. Then the leaves fall and the end of the branch to die. There are times when formed young leaves, or flowers and fruit early. On plant roots seem ill-colored threads of white mushrooms and a bit thick (rizomorf). Sometimes mushroom fruit body forming a cap-like yellowish orange at the base of the plant roots. In severe attacks, the plant roots to rot so easily uprooted plants and dead. Crops often creeping death on neighboring plants. Transmission of the fungus usually takes place through contact to tunggultunggul healthy plant roots, the remaining root or roots of plants diseased plants. White root disease is common in 1-5 year old rubber plantation, especially in the bush, many of the remaining stump or roots of plants and in loose soil or sand. Treatment of diseased plants should be done at the time of the attack early to get treatment success and reduce the risk of plant death. When treatment is done at the time of the attack continued success of treatment only reaches below 80%. How to use and type of recommended fungicides are recommended:
White root disease caused by a fungus Rigidoporus microporus (Rigidoporus lignosus). These diseases result in damage to plant roots. Symptoms on leaves appear pale yellow and the edge or tip of the leaf folded into. Then the leaves fall and the end of the branch to die. There are times when formed young leaves, or flowers and fruit early. On plant roots seem ill-colored threads of white mushrooms and a bit thick (rizomorf). Sometimes mushroom fruit body forming a cap-like yellowish orange at the base of the plant roots. In severe attacks, the plant roots to rot so easily uprooted plants and dead. Crops often creeping death on neighboring plants. Transmission of the fungus usually takes place through contact to tunggultunggul healthy plant roots, the remaining root or roots of plants diseased plants. White root disease is common in 1-5 year old rubber plantation, especially in the bush, many of the remaining stump or roots of plants and in loose soil or sand. Treatment of diseased plants should be done at the time of the attack early to get treatment success and reduce the risk of plant death. When treatment is done at the time of the attack continued success of treatment only reaches below 80%. How to use and type of recommended fungicides are recommended:
Basting: Calixin CP, Fomac 2, Ingro Shell Pasta 20 PA and CP.
Watering: Alto 100 SL, Anvil 50 SC, Bayfidan 250 EC, Bayleton 250 EC,
Calixin 750 EC, WP and 12.5 Sumiate Vectra 100 SC.
Sowing: Anjap P, P Biotri, Bayfidan 3 G, Sulfur and tricot SP +
DroughtFlow Sadap (Tapping Panel Dryness, Brown Bast)
Disease resulting in drought drought tapping groove groove so as not to drain the latex tapping, but the disease does not kill the plant. The disease is caused by tapping too often, especially if accompanied by the use of latex stimulants ethepon. The existence of drought tapping groove initially characterized by the flow of latex on the part of tapping grooves. Then in a few weeks a whole line of tapping is not pulled out a dried latex. Dry parts will change color to brown gum formed in this section (blendok).
Skin dryness can be extended to other skin of her age, but does not extend from skin to skin recovered virgin or otherwise. Other symptoms of this disease is caused by the cracking of the skin and swelling or bulge on the stem of the plant.
Disease control is done by: Avoid tapping which too often and reduce the use of clones ethepon especially vulnerable to dry tapping grooves that BPM 1, PB 235, PB 260, PB 330, PR 261 and RRIC 100. When a decline in levels of persistent dry rubber in latex is collected and an increase in the number of trees affected by tapping groove dried to 10% on the entire area, then the tapping intensity is derived from 1/2S d / 2 be the 1/2S d / 3 or 1 / 2S d / 4, and the use of ethepon reduced or terminated to prevent other trees do not have dry tapping grooves.
Scrape the skin is dry to the limit of 3-4 mm from the cambium by the tapping knife or tool wear pengerok. Scraped skin smeared with material NoBB stimulating skin growth or Antico F-96 once a month with 3 replications. NoBB basting should be followed by spraying of pesticides Matador 25 EC on the dioles once a week to prevent the entry of weevils. Tapping may be continued under a dry skin or in other panels with low-intensity sound (1/2S d / 3 or 1/2S d / 4). Avoid the use of a taxable ethepon drought on tree tapping grooves. Trees that suffer from drought tapping grooves need to be given extra fertilizer to speed up skin recovery.
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