Influence of Sorghum Cultivar, Phenological Stage, and Fertilization on Development and Reproduction of Melanaphis sacchari (Hemiptera: Aphididae)

Wilson, B. H.; Davis, Jeffrey A.; Reagan, T. E.; Lama, Luna

doi:10.1653/024.102.0131

Cited by 14 publications

(4 citation statements)

References 32 publications

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“…The intrinsic rate of increase (r m ) is a good indicator of antibiosis in aphids, as low r m values indicates that a plant has characteristics of resistance (Armstrong et al, 2015;Lama et al, 2019;Paudyal et al, 2019). Souza and Davis (2021), in characterization of sorghum strains, showed that aphids showed lower rm values in the sorghum genotypes resistant to aphids PI 524770 (rm = 0.29), PI 564163 (rm = 0.27) and PI643515 (rm = 0.32) compared to susceptible genotypes (Souza and Davis, 2021).…”

Section: Discussionmentioning

confidence: 99%

Resistance of sorghum hybrids to sorghum aphid

et al. 2022

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The aphid Melanaphis sorghi (Theobald) (Hemiptera: Aphididae), which infest the sorghum crop, has been an economically important pest which have been causing severe damage to sorghum crops in Brazil since 2019. These species have been observed mainly at the end of vegetative stage and beginning of reproductive stage of plants. Their high reproductive rate on sorghum raises concerns about these pests. Therefore, the present study aimed to estimate the life expectancy and fertility tables of Melanaphis sorghi fed on 15 hybrids of grain sorghum, in order to know the resistance characteristics of these materials and understand how plant resistance can help manage this insect. This study was carried out in a laboratory at 26±2 ºC and 60±10% R.H (relative humidity). Fifty insects were kept in each hybrid, each insect was considered one repetition. According to biological parameters and fertility life table, hybrids BRS373, DKB590 and 50A10 were less suitable for the sugarcane aphid multiplication. Thus, these hybrids could be useful to manage this pest, since the population growth speed is one of the worst problems for the implementation of cropping systems. Genotypes AG1090, MSK327 and XGN1305 favored the development of this pest and, when chosen within a cropping system, other management strategies should be considered.

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Section: Discussionmentioning

confidence: 99%

Resistance of sorghum hybrids to sorghum aphid

et al. 2022

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“…on the influence of nitrogen fertilization on the sugarcane aphid by Lama et al (2019). Several studies report that excessive nitrogen fertilization causes an increase in the aphid fertility rate, stimulating an excessive increase in the population (Aqueel & Leather, 2011;Rostami et al, 2012;Hosseini et al, 2015;Aziz et al, 2018;Dong et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Increased nitrogen fertilization can improve the nutritional quality and plant attractiveness for aphids by improving the dietary parameters of the phloem with an increase in the level of amino acids and nitrates in the host plants (Douglas, 2006;Fallahpour et al, 2015). Recent studies have shown a marked increase in the population parameters of M. sacchari/sorghi with increased nitrogen fertilization (Lama et al, 2019;Wilson et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Relationship between chemical fertilization in sorghum and Melanaphis sacchari/sorghi (Hemiptera: Aphididae) populations

et al. 2020

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The aphid Melanaphis sacchari/sorghi is considered the most important pest of sorghum cultivation in Mexico. It can cause losses in production of up to 100%. This research was conducted at the Universidad Autonoma Chapingo during 2018 and 2019 with the objective of determining the relationship between chemical fertilization in sorghum and M. sacchari/sorghi (Hemiptera: Aphididae) populations. Different levels of nitrogen (125, 250 and 500 kg ha-1), phosphorus (19.5, 39 and 78 kg ha-1) and potassium (210 and 420 kg ha-1) were supplied to sorghum plants planted in polyethylene pots with a capacity of 6 L under greenhouse conditions. The plants were infested with a total of 15 third-instar nymphs within 60 days of crop emergence. A total of 6 samplings were carried out at 7 day intervals, starting at 7 d after the infestation. Quantifications of total soluble proteins, total soluble sugars, reducing sugars, and levels of nitrogen, phosphorus, potassium and magnesium in leaf tissue were also performed. We observed that higher doses of nitrogen and phosphorus increased the aphid population, while increasing the potassium dose considerably decreased the aphid population. We also found a positive correlation between the aphid population and the total soluble protein concentrations, reducing sugars and nitrogen levels, while the correlation was negative with potassium levels in leaves.

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“…La mayor adopción de prácticas de manejo integrado del PAS en la región de Izúcar de Matamoros demuestra el interés de los productores de sorgo por implementar estrategias complementarias que permitan el control de la plaga. Así mismo, la transición hacia prácticas de manejo integrado es relevante debido a que, la adopción de prácticas culturales y de monitoreo producen un efecto en la densidad poblacional del PAS (Lama et al, 2019). Los resultados muestran que una de las prácticas introducidas por los productores fue el uso exclusivo de huevos de C. carnea, que a pesar de ser usados por 3% de los productores prevaleció en el 2017 y 2018 (figura 4).…”

Section: Factores Asociados Al Pulgón Amarillo Del Sorgo Y Prácticas ...unclassified

Percepción de la incidencia de Melanaphis sacchari (Zehntner) y sus enemigos naturales en sorgo (Sorghum bicolor) por productores de Puebla, México

Fortoul-Díaz¹,

Magaña²,

Peña³

et al. 2022

Estudios Sociales

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Objetivo: analizar la percepción de productores de sorgo sobre la incidencia y daños del pulgón amarillo y sus enemigos naturales, así como los métodos de control para fortalecer estrategias de manejo integrado y reducir daños causados por el áfido en tres localidades de la región poblana productora de este grano. Metodología: mediante un muestreo por conveniencia y una guía de entrevista se recopiló información de 44 productores asistentes a reuniones realizadas por el Comité Estatal de Sanidad Vegetal. Resultados: el cultivo de sorgo fue de temporal. Los grandes problemas que los productores identificaron en sorgo fueron cuatro, 66% señaló al pulgón amarillo como el principal. Los productores percibieron infestación en todas sus parcelas en diferentes etapas del cultivo. Se utilizó principalmente insecticidas químicos para el control del áfido, seguido de la combinación con enemigos naturales. El 77% observó enemigos naturales del áfido en su parcela, de los cuales catarinas y sírfidos tuvieron mayor presencia. El 70% indicó que los enemigos naturales están amenazados por las altas dosis de insecticidas aplicados. Limitaciones: si bien el estudio se realizó en tres localidades, este permitió comprender los elementos principales del fenómeno estudiado. Conclusiones: los productores percibieron e identificaron el pulgón amarillo del sorgo como el principal problema del cultivo y afectó toda la superficie. Precisaron la presencia de al menos un enemigo natural en su parcela. Sin embargo, la alta aplicación de insecticidas tiene efectos adversos en los mismos, hallazgos que reflejan un potencial biológico importante para usarse en el manejo del áfido.

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Influence of Sorghum Cultivar, Phenological Stage, and Fertilization on Development and Reproduction of Melanaphis sacchari (Hemiptera: Aphididae)

Cited by 14 publications

References 32 publications

Resistance of sorghum hybrids to sorghum aphid

Resistance of sorghum hybrids to sorghum aphid

Relationship between chemical fertilization in sorghum and Melanaphis sacchari/sorghi (Hemiptera: Aphididae) populations

Percepción de la incidencia de Melanaphis sacchari (Zehntner) y sus enemigos naturales en sorgo (Sorghum bicolor) por productores de Puebla, México

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