Effect of Urea Fertilizer on Root-Gall Disease of Meloidogyne javanica in Soybean (Glycine max (L.) Merril)

Agu, C. M.

doi:10.1300/j064v20n03_09

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…Thus, establishment of novel disease management strategies is important for healthy vegetable production. Companion planting can improve the temporal and spatial efficiency of crop production, suppress weed growth and the spread of diseases and insect pests, decrease the need for chemical inputs, and maintain an appropriate ecological balance [29, 30]. In the present study, we observed that the inclusion of Welsh onion as a companion plant decreased RKN-induced damage to cucumber plants, which had fewer root knots and egg masses on the root system (Fig 1).…”

Section: Discussionsupporting

confidence: 50%

Inhibitory effects of components from root exudates of Welsh onion against root knot nematodes

Wang

Xia

et al. 2018

PLoS ONE

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Root-knot nematodes (RKNs; Meloidogyne spp.) are obligate endoparasites that infect many crops and cause severe yield losses. In this research, we studied the effect of Welsh onion, grown as a companion plant, on the resistance of cucumber plants to RKN infection and analyzed the most abundant components of Welsh onion root exudates. The results showed that, when grown with Welsh onion as a companion plant, cucumber roots had 77.0% fewer root knots and egg masses than the control cucumber roots. Welsh onion root exudates were collected and extracted with chloroform, ethyl ether, n-butanol and ethyl acetate. High concentrations of the extracts from the Welsh onion root exudates decreased the hatchability of RKN eggs. In particular, the inhibitory effect of the n-butanol extract was significant and the hatchability of RKN eggs did not exceed 10%. Gas chromatographic–mass spectrometric analysis revealed that the most abundant component in the n-butanol extract was 4-hydroxy-benzeneethanol. Treatment with 1.2 mM 4-hydroxy-benzeneethanol decreased egg hatchability to 40%, whereas treatment with 9.6 mM or a higher concentration of 4-hydroxy-benzeneethanol decreased egg hatchability to less than 10%. In addition, 1.2 mM or a higher concentration of 4-hydroxy-benzeneethanol decreased the activity of the second-stage juvenile (J2). Higher 4-hydroxy-benzeneethanol concentrations (9.8 and 19.2 mM) were lethal to RKNs to some extent, with death rates greater than 50% at 48 h of treatment. The present results suggest that cultivation with Welsh onion as a companion plant may represent an alternative to the application of synthetic nematicides, with fewer side effects. We confirmed that 4-hydroxy-benzeneethanol is a natural effective nematicide.

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Section: Discussionsupporting

confidence: 50%

Inhibitory effects of components from root exudates of Welsh onion against root knot nematodes

Wang

Xia

et al. 2018

PLoS ONE

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“…The obtained results are supported by the findings reported by Agu (2002), Coyne et al, (2004) and Quraishi (1985). Reduction in nematode reproduction as a result of applying inorganic fertilizers may be attributed to their suppressive effect on giant cell development.…”

Section: Resultssupporting

confidence: 91%

“…In 1955, Oteifa recorded that ammonia diminished reproduction of M. incognita for the first time and since then several reports have been registered on such trend (Melakeberhan et al, 1988, Gupta;1988, 1990Alam, 1991, Ahmed et al, 1991and Kheir et al, 2009. Moreover, the efficacy of N, P, K and urea on different nematode species, especially root-knot nematodes and crop growth have been extensively noticed (El-Nagar 1990;Khan& Khan, 1995;Mitchell& Gazaway, 1996, Gelster& Romaneko, 1997Akhtar et al, 1998;Gupta et al, 1999;Trifonova, 2001;Agu (2002), Bamel et al, 2003, Sinha &Neog, 2003, El-Sherif et al, 2008, Kheir et al, 2009and El-Sherif et al, 2010. However, trace elements and heavy metals with only few reports in the literature were recorded by several workers (Osman et al, 1993;Smith et al, 2000;Siddiqui et al, 2002 andGoldi-Arora et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

ROLE OF CERTAIN INORGANIC FERTILIZERS ON CONTROLLING Meloidogyne incognita INFECTING TOMATO PLANTS UNDER GREENHOUSE CONDITIONS

El-Sherif

Refaei

Nassar

et al. 2012

Journal of Plant Protection and Pathology

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The role of spray application of three inorganic fertilizers MnSO4, ZnSO4 and CaCl2 at three concentration each viz: 50, 100 and 150 mg/l of the first two elements and 100, 200 and 300 mg/l for the latter fertilizer three times at one week interval in comparison with oxamyl at the recommended dose (0.39/plant) on development and reproduction of M. incognita infecting tomato plants cv. Castle Rock and plant growth was studied under greenhouse conditions (29±7ºC). Obviously all tested nutrient minerals with their concs. significantly improved plant growth parameters and reduced nematode criteria, respectively as well to great extent. Among the tested inorganic fertilizers, CaCl2 at 200 mg/l/plant overwhelmed other treatments, followed by that of MnSO4 at 150 mg/l in the increments values of plant growth parameters such as shoot dry weights (30 and 21.1%). whereas, ZnSO4 at 100 mg/l application had the lowest value (9.6%) in this respect, respectively. Similar trend was noticed regarding reduction of nematode criteria such as population density (90.8, 90.7 and 90.2%) respectively. Likewise, nematode multiplication was also affected by the tested nutrient elements performing the above trend, where CaCl2 at 200 mg/l and ZnSO4 at 50 mg/l/plant represented of minimum and maximum values that averaged 0.13 and 0.16 vs 1.39 for nematode alone respectively. N, P, K concs., chlorophyll and total phenol contents in leaves of tomato either infected with M. incognita or not as influenced by foliar spraying of the tested inorganic fertilizers were reported and discussed.

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“…Meanwhile, increasing onion plant density up to four rows significantly increased plant height and onion yield/fad. (Agu, 2008) showed that intercropping reduced weed, pest and diseases. Xiao et al (2012) reported that intercropping between cucumber and garlic has stimulated population of bacteria and actinomycetes, and inhibited fungi, which suggests that this intercropping system can improve soil biology.…”

Section: Introductionmentioning

confidence: 99%

Influence of Onion Planting Density Intercropped With Sugar Beet on Productivity Characters and Root Rot Incidence of Sugar Beet

Awad

Kacem

Ghazy

2022

Sinai Journal of Applied Sciences

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The present investigation was carried out at Kafr El-Hamam, Sharkia Governorate, Egypt during 2018/2019 and 2019/2020 seasons to investigate the effect of onion density intercropped with sugar beet on the productivity of the two crops, competitive indices, net returns and root rot incidence of sugar beet. The treatments were arranged in randomized complete block design with three replications. The experiment included 6 treatments: one, two, three and four rows of onion intercropped with sugar beet as well as solid sugar beet and onion. Solid sugar beet gave the highest root diameter and the lowest purity (%) in the two seasons. Also, it gave the highest value for each of studied trait as compared with intercropped sugar beet in one season. Solid onion (T2) gave the highest values in onion yield and the studied traits followed by T4. Yield components of onion intercropped with sugar beet were decreased by increasing onion row number. The highest LER and net return were obtained with intercropping two rows of onion between sugar beet rows meanwhile, the lowest LER was recorded by intercropping four rows of onion. Intercropping onion decreased root rot (%). It is recommended intercropping two rows of onions on the middle terrace, 10 cm between hills and 15 cm between the two rows: with sugar beet which were growing in both sides of terrace 120 cm width, this system gave the highest value for each of rate of yield, LER, net income and reducing root rot (%) without using chemical methods.

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Effect of Urea Fertilizer on Root-Gall Disease of Meloidogyne javanica in Soybean (Glycine max (L.) Merril)

Cited by 6 publications

References 5 publications

Inhibitory effects of components from root exudates of Welsh onion against root knot nematodes

Inhibitory effects of components from root exudates of Welsh onion against root knot nematodes

ROLE OF CERTAIN INORGANIC FERTILIZERS ON CONTROLLING Meloidogyne incognita INFECTING TOMATO PLANTS UNDER GREENHOUSE CONDITIONS

Influence of Onion Planting Density Intercropped With Sugar Beet on Productivity Characters and Root Rot Incidence of Sugar Beet

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