Susceptibility of Some Soybean Varieties to Certain Piercing-Sucking Insects Under the Field Conditions of North Delta

Mesbah, I. I.; Khalafalla, E.M.E.; Eissa, Ghada M.; Hegazy, Fatma H.; Khattab, Marwa S.

doi:10.21608/ejar.2019.68613

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…Misr 10 hosted fewer whiteflies, but Crawford and H 29 L 115 harbored many whiteflies in the 8 th and 9 th weeks in both seasons. The findings of Abdallah et al (2015), Alaa El-Deen (2016) and Mesbah et al (2019) that Giza 111 seems vulnerable to whitefly infestation are consistent with these findings.…”

Section: Soybean Genotypessupporting

confidence: 72%

Response of Some Soybean Genotypes to Insect Infestation under Three Mineral Nitrogen Fertilizer Rates

Abdel-Wahab,

Mohamed,

Baheeg

et al. 2024

ASD

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Background: A two-year study was conducted at Giza Agricultural Research Station, Agricultural Research Center (ARC), Egypt, to evaluate the productivity of six genotypes of soybeans under three mineral nitrogen (N) fertilizer rates, as well as their resistance to insects, in comparison to four check varieties. Methods: The study took place during the 2021 and 2022 summer seasons. The treatments included three mineral N fertilizer rates (N1=67% of N fertilizer rate “71.4 kg N/ha”, N2=33% of N fertilizer rate “35.7 kg N/ha” with seed inoculation by Bradyrhizobium japonicum and N3=100% of N fertilizer rate of the recommended rate “107.1 kg N/ha”) and ten soybean genotypes (H4L4, H6L198, H18L54, H29L115, H129, Misr 10, along with Dr101 and Giza 111 “resistant” and Giza 82 and Crawford “susceptible”). The experiment used a split plot design with three replications. The main plots were assigned the mineral N fertilizer rates, while the subplots, were assigned the soybean genotypes. Result: Fewer cotton leaf worms, whiteflies and leaf miners were found after applying N1 or N2. In the 6th week from sowing, Misr 10 and Dr 101 had fewer cotton leaf worms and whiteflies. In contrast, throughout the 7th, 8th and 9th weeks from sowing, Misr 10 and H6L198 had fewer cotton leaf worms. Misr 10 had fewer leaf miners in every week and fewer whiteflies in the 7th, 8th and 9th weeks from sowing. In the 6th week of the first season, Misr 10, Dr101, H18L54 and Giza 111 that received N1 or N2 had fewer cotton leaf worms; in the 7th and 9th weeks from sowing, Misr 10, Dr101 and H6L198 harbored fewer whiteflies. The lowest pod weight/plant, seed yield/plant, 100-seed weight, seed yield/ha and HI were obtained by using N3. Higher biological yield/ha, seed yield/plant, 100-seed weight, seed yield/ha and HI were attained by Misr 10. In the second season, seed yield per plant and seed yield per hectare were significantly affected by the interaction between soybean genotypes and mineral N fertilizer rates. Growing Misr 10 with 67 per cent N of the recommended rate increased seed yield/plant and seed yield/ha, along with fewer cotton leaf worm, whiteflies and leaf miners compared to the commercial cultivar Giza 111 receiving the recommended mineral N fertilizer rate.

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Section: Soybean Genotypessupporting

confidence: 72%

Response of Some Soybean Genotypes to Insect Infestation under Three Mineral Nitrogen Fertilizer Rates

Abdel-Wahab,

Mohamed,

Baheeg

et al. 2024

ASD

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“…It could be noticed that the combination in the application of humic acid, C.N.Ps, and abamectin may reduce pests' infestation in soybean plants when applied at this stage of plant growth. This time is accurate to manage pests understudy meanwhile keep their abundance under Economic Threshold (Alakhdar et al, 2015;Czepak et al, 2018;Abd El-Razzik, 2018;Mesbah et al, 2019).…”

Section: Interaction Effect Of Spray Compounds and Periodsmentioning

confidence: 99%

Relative toxicity of two natural compounds compared to abamectin against some soybean pests under period rates

Alakhdar

Ghareeb

2021

OCL

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A sustainable pest management in agro-ecosystems requires parallel assessments of pesticide and natural compounds to control target pests. In the present study, a semi-field experiment was conducted to evaluate the relative toxicity of abamectin (Abamax), humic acid, and Chitosan Nano-Particles (C.N.Ps) against four soybean pests: Tetranychus urticae, Eutetranychus orientalis, Bemisia tabaci, and Phenacoccus solenopsis. The experimental treatments were arranged in a split-plot design with three replicates, where treatments were assigned to main plots and pest populations under different periods in the subplots. The obtained results and graphs demonstrated that there were considerable differences between the total numbers of pests after different periods of treatment. Generally, E. orientalis recorded the minimum pest number at all. Different tested compounds demonstrated a considerable correlation between the densities of the pests. T. urticae exhibited a significant correlation with the other three pests (E. orientalis, B. tabaci, and P. solenopsis). E. orientalis did not correlate with B. tabaci and P. solenopsis. The humic acid recorded the best effect on T. urticae after 3 days with a reduction of 85.45% and E. orientalis after 7 days 65.55%. However, Chitosan Nano-Particles (C.N.Ps) was the best for E. orientalis after 14 days (mortality 74.36%). In contrast, abamectin (Abamax) had a general mean of reduction of 91.17% against T. urticae, whenever, these compounds are promising for controlling T. urticae, E. orientalis, B. tabaci, and P. solenopsis. These results may be a supporting method to overcome some soybean pests. The findings are discussed within the context of integrated management of soybean pests under semi-field conditions.

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Susceptibility of Some Soybean Varieties to Certain Piercing-Sucking Insects Under the Field Conditions of North Delta

Cited by 2 publications

References 9 publications

Response of Some Soybean Genotypes to Insect Infestation under Three Mineral Nitrogen Fertilizer Rates

Response of Some Soybean Genotypes to Insect Infestation under Three Mineral Nitrogen Fertilizer Rates

Relative toxicity of two natural compounds compared to abamectin against some soybean pests under period rates

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