Control of Soil-borne Pathogens by Soil Fumigation with Paraformaldehyde (Fogidesfarm) as Alternative to Methyl Bromide

Al-Khatib, Mahmoud; Shequarah, Maen Nimer; Alsmadi, Saeed Abdullah

doi:10.3923/ajppaj.2017.81.88

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…Plastic pots of 15 kg volume were laid out in a completely randomized design (CRD) with eight replications per treatment. The pots and soil used for the experiment were pre-fumigated with 5% formaldehyde to kill potential pathogens (Al-Khatib et al 2017 ). Well-decomposed compost was mixed with the soil prepared at the rate of 10 t/ha and then triple super phosphate, muriate of potash, gypsum, ZnSO 4 and Boric acid were added at the rate of 1, 0.4, 0.06, 0.06 and 0.03 g per pot respectively at the time of planting (BRRI 2017 ).…”

Section: Methodsmentioning

confidence: 99%

Potential of Exogenous Treatment with Dehydroascorbate to Control Root-knot Nematode Infection in Rice

Chavan

Tumpa

Khokon

et al. 2023

Rice

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Induced resistance (IR) is a unique physiological state characterized by reduced plant susceptibility to (a)biotic stress. Our previous studies showed that exogenous foliar application of dehydroascorbate (DHA), the oxidized form of ascorbic acid, induces systemic resistance against root-knot nematode Meloidogyne graminicola in rice. In the present study, the potential of DHA in protecting rice plants against M. graminicola was evaluated in lab, pot, and field studies. In an experiment where the interval between foliar treatment and inoculation was varied, 20 mM DHA was found to protect rice plants from M. graminicola for at least 14 days. Pot and field studies confirmed that 10 or 20 mM DHA are highly effective in reducing gall formation and led to a significant increase in rice seed yield. A half dose of DHA (10 mM) combined with another IR-stimulus - piperonylic acid (PA) 300 µM - was at par with DHA 20 mM, leading to reductions in gall formation of more than 80%. In in vitro bioassays, DHA was found to be highly nematicidal to the second-stage juveniles of M. graminicola, with more than 90% mortality within 3 h of exposure to 10 or 20 mM concentrations. While seed treatment had no effect, root drenching or root dipping was also effective in reducing rice susceptibility to M. graminicola, next to foliar treatment. As a dual-action compound with extended protection and ease of application, DHA has great potential for effective nematode management in rice.

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Section: Methodsmentioning

confidence: 99%