Biocontrol and Growth-Promoting Potential of Bacillus subtilis against Root-Rot Disease in Sugar Beet

Research Authors
Kamal A.M. Abo-Elyousr, Mansour M. El-Fawy, Esmat F. Ali, Abeer S. Alqurashi, Alaa Baazeem ; Mohamed M. Hassan; Roqayah H. Kadi and Nashwa M A. Sallam
Research Date
Research Department
Department of Plant Pathology
Research Journal
Q3
Research Member
Kamal Ahmed Mohamed Abo-Elyousr
Nashwa Mohamed Atef Ahmed Sallam
Research Pages
https://link.springer.com/journal/13313/articles
Research Rank
q3
Research Website
https://doi.org/10.1007/s13313-026-01170-6
Research Year
2026

Synergistic and Antagonistic Effects of Insecticides and Heavy Metals on the Bird Cherry–Oat Aphid, Rhopalosiphum padi (L.), Under Laboratory Conditions.

Research Abstract

Co-exposure to insecticides and heavy metals alters the way the chemicals affect the aphid. This interaction can induce synergism through enzymatic inhibition of the insect, increasing mortality, or antagonism through competition for cellular receptors. The aim of this study was to determine the synergistic or antagonistic effect of four insecticides and five heavy metals on the median lethal concentrations (LC50 and LC90) and their toxic efficiency between 24 and 48 h post-exposure to the bird cherry–oat aphid under laboratory conditions. The four pesticides were acetamiprid, imidacloprid, emamectin benzoate, and thiamethoxam. The five heavy metals were Cr, Ni, Pb, Cd, and Cu. The results revealed LC50 and slope values for all four tested insecticides against the aphid. After 24 and 48 h from treatment, acetamiprid was the most toxic compound according to LC50 values, followed by emamectin benzoate, thiamethoxam, while imidacloprid was the least toxic one. The results indicated that thiamethoxam was synergized by Cr, Cu, Cd, Ni, and Pb by 18.31, 5.36, 74.12, 4.58, and 225.46-fold, respectively, as compared with LC50 values of thiamethoxam alone. This finding indicated that Pb was the most effective heavy metal in synergizing thiamethoxam. The results indicated that the toxicity of imidacloprid increased by adding each of the tested heavy metals except for Cu as compared with LC50 of imidacloprid alone. Results showed that LC50 value of each insecticide decreased with Cd as compared with LC50 value of the insecticide alone at both 24 h and 48 h. Under the conditions of this study, it can be concluded that the Cd acted as a synergist for all tested insecticides.

Research Authors
Saad MAA, Andrade-Yucailla V, Abdeen SA, Gomah HH, EzzEl-Din HA, Ahmed MAI, Ahmed AMM.
Research Date
Research Department
Department of Plant Protection
Research Journal
Toxics
Research Member
Mohamed Ahmed Ibrahim Ahmed
Research Pages
1-15
Research Publisher
MDPI
Research Rank
International
Research Vol
14(7):559
Research Website
https://www.mdpi.com/2305-6304/14/7/559
Research Year
2026

Effect of Different Packaging Materials and Storage Periods on the Yield and Quality of Bread Wheat Grains

Research Abstract
Abstract This investigation was carried out at laboratories of examination and certification of seeds, at the Agronomy Department, Faculty of Agriculture, Assiut University, Egypt during 2019 season to study the impact of storage period, grains treatment and storage methods on quality and yield traits of Gemaza11 cultivar using completely randomized design. The studied traits, were significantly decreased with increasing storage periods till nine months. The lowest mean value test weight (60), seed index (50.33 g), gluten content (10.33%), fermentation time test (30.67 minutes), fine flour percentage (72%), coarse flour percentage (3.333%), coarse bran percentage (20.33%), and fine bran percentage (4.00%). The highest mean values of grain yield feddan-1. Moreover the lowest mean values of grain yield feddan
Research Authors
Ahmed, Aya A.A.; E.A. Teama; G.R. Elnagar and Howida E. Abdelkader
Research Date
Research Department
Department of Agronomy
Research Journal
Assiut Journal of Agricultural Sciences
Research Member
Howida Izzedine Abdel-kadir Ahmed
Research Website
Doi: 10.21608/ajas.2021.82074.1032
Research Year
2021

Response of Faba Bean (Vicia faba L.) Growth and Productivity to Foliar Application of Salicylic Acid and Zinc Application Methods under Upper Egypt Conditions

Research Abstract
Abstract Two field experiments were carried out during the agricultural successive seasons (2020/2021 and 2021/2022) in the Agric., Farm of Assiut Univ., Egypt. This investigation aimed to study the effect of spraying methods on two faba bean varieties with different concentrations of salicylic acid (SA) and zinc on the growth and yield. The experiment was designed in split split plot design with three replicates. The first factor included faba bean varieties (Giza 843 and Giza 40) while the second factor included spraying with three concentrations of salicylic acid (0, 100 and 200 ppm. The third factor included two zinc application methods: soil application as Zinc sulphate at a rate of (5 kg/fed) at soil preparing, and foliar application at a rate of 50 mg Zn L-1 of EDTA (13%). Statistical results revealed that Giza 843 variety appeared to be preferred over Giza 40 in all growth and yield parameters. The obtained data indicated that growth and yield parameters increased significantly by increasing SA concentration from 100 ppm to 200 ppm in comparison to the control treatments in both seasons. Data also revealed that both zinc applications methods had a significant effect on growth and yield of faba bean as compared with the control. Also, spraying bean plants by 50 ppm zinc (EDTA) gave the maximum values of growth and yield parameters compared to soil addition with zinc sulphate. The study concluded that the combined foliar application of 200 ppm SA and 50 ppm zinc spray recorded the maximum growth and yield of Giza 843 variety under the conditions of Assiut Governorate.
Research Authors
Howida E Abdelkader
Research Date
Research Department
Department of Agronomy
Research Journal
Assiut Journal of Agricultural Sciences
Research Member
Howida Izzedine Abdel-kadir Ahmed
Research Website
DOI: 10.21608/AJAS.2025.345819.1439
Research Year
2025

Impact of Humic Acid and Foliar Application of Chitosan on Growth, Yield, and Seed Quality of Faba Bean Crop (Vicia faba L.)

Research Abstract
Abstract Two field experiments were carried out at the Agriculture Research Station of Assiut Research Farm, Faculty of Agric., Assiut Univ., Egypt, for two winter seasons of 2021/2022 and 2022/2023. The aim of this study was to investigate the response of vegetative growth, yield components, and some seed Quality of faba bean (Vicia faba L.) cultivar “Giza 843", to soil application of humic acid and foliar application of chitosan (Ch). Humic acid was applied as soil application at four concentrations (0, 2, 4 and 6 kg/fed twice during growth period. Chitosan (Ch) was foliar applied at 0, 50,100,150 and 250 ppm) four times within growth period. The experiment was designed in split plot design. Humic acid was allocated in the main plot. Meanwhile, chitosan was applied to the sub plot. Results revealed that either humic acid or chitosan highly significantly affected all vegetative growth traits, yield components, and chemical seed quality. Also, combined application of humic acid at a rate of 6kg/fed combined with foliar application of chitosan at 250 ppm recorded the maximum results.
Research Authors
Howida E Abdelkader
Research Date
Research Department
Department of Agronomy
Research Journal
Assiut Journal of Agricultural Sciences
Research Member
Howida Izzedine Abdel-kadir Ahmed
Research Website
DOI: 10.21608/AJAS.2025.345830.1440
Research Year
2025

Rationalization of Irrigation Water Using Potassium and Foliar Spraying with Salicylic Acid of Soybean

Research Abstract
Abstract A field experiment was carried out during 2023 and 2024 seasons at the Agricultural Research Station Experimental Farm in Shandaweel Island, Sohag Governorate to study the effect of spraying soybean (Var. Giza-111) with different concentrations of salicylic acid (SA) and potassium sulphate under different levels of water stress on some vegetative and crop yield characteristics. The experiment was laid out in randomized complete block design (RCBD) using strip plot arrangement within split with three replicates. Three irrigation water amounts (2400, 2000 and 1800 m3/fed/season) were distributed vertically while the four SA concentrations (control, 25, 75, and 100 ppm) were allocated horizontally and, potassium sulphate rate (control, 48 and 72 kg/fed,) as soil applications were arranged in sub plot. The results showed that adding potassium at a rate of 72 kg per fed and spraying soybeans at a rate of 100 ppm had a significant effect on the growth (plant height and number of branches/plant) and soybean productivity (number of pods/plant, weight of 100 seeds, weight of seeds/plant and seed yield/fed). The interaction results showed that adding potassium at a rate of 72 kg /fed. and spraying salicylic acid at a rate of 100 ppm saved the amount of irrigation water from 2400 m3 to 1800 m3.
Research Authors
Mahmoud A. Ayoub1; Elmahdy A. Teama2; El-Saady A. Ali2; Mohamed T. Said2 and Howida E. Abdelkader2*
Research Date
Research Department
Department of Agronomy
Research Journal
Assiut Journal of Agricultural Sciences
Research Member
Howida Izzedine Abdel-kadir Ahmed
Research Website
DOI: 10.21608/AJAS.2025.378193.1479
Research Year
2025

Improving Wheat Productivity by Utilization of Bio-Stimulant and Humic Acid in Upper Egypt

Research Abstract
Abstract A field experiment was carried out at the experimental Research Station of Agric. Faculty of Assiut., Assiut Univ., Assiut Governorate. Egypt, during two successive winter seasons of 2021/2022 and 2022/2023 to study the response productivity and protein % of wheat cultivar (Giza 171) to Micobein inoculation (3 gm/L) and humic acid foliar application at a rate of (0, 2 and 3 gm./L) under nitrogen levels (25, 50 and 75 kg N/fed). The experiment was carried out in split- split plot design with four replications. The main-plots were assigned for N-fertilization, while, the sub-plots were randomly allocated for foliar application of humic acid levels. Whilst, the sub-sub plots were randomly distributed for Microbein inoculation levels (25, 50 and 75 kg/fed). The obtained results revealed that all wheat traits were significantly affected by the treatments. Inoculation have an increase percentages for heading date (HD), plant height (PL), Spike length (SL) and No. of spiks/me (SN) by (4.22 & 3.95%), (19.66 & 19.62%), (&.62 & 5.25%) and (12.82 & 13.10%) over the un –inoculated treatment respectively. Moreover, the results recorded that the application of humic acid at 3 gm /L increased markedly seed index, grain yield per fed, biological yield per fed, and % protein. The results recommended that sowing wheat Giza 171 cultivar on 15th November with inoculation with 3 gm/L of microbein and foliar application with humic acid (3gm/L) twice had a progressive effect especially with applying 50 kg N/fed., under the Assiut Governorate, Egypt.
Research Authors
Howida E Abdelkader
Research Date
Research Department
Department of Agronomy
Research Journal
Assiut Journal of Agricultural Sciences
Research Member
Howida Izzedine Abdel-kadir Ahmed
Research Year
2026

Effect of Foliar Application with Gibberellic Acid on Growth, Yield Components of Sesame and its Seed Oil Content

Research Abstract

Effect of Foliar Application with Gibberellic Acid on Growth, Yield Components of Sesame and its Seed Oil Content

Howaida E. Abdel Kader*

Agronomy Department ، Faculty of Agriculture ، Assiut University، Assiut ، Egypt. Correspondence Author: howidaahmed10@gmail.com

DOI: 10.21608/AJAS.2026.451090.1586

© Faculty of Agriculture, Assiut University

Assiut Journal of Agricultural Sciences 57 (2) 2025 (27-44)

 

Abstract

The present investigation was carried out at field Experimental Station, Agric. Faculty., Assiut Univ., during the two successive summer seasons, 2023 and 2024 to evaluate the effects of foliar application of gibberellic acid at three times; 25 or 45 days once and twice at 25 and 45 DAS during growing season with concentrations of 0, 50, 100, and 150 ppm GA3 on the growth, yield, and seed oil characteristics of sesame (Giza 32).

Results showed that highly significant differences in mean vegetative growth, yield components and seed oil yield in both seasons. Application of 150 ppm of GA3 significantly increased plant height by (18.23 & 18.18%) and fruiting zone length by (31.61 & 31.65%) as well as, No. of capsules plant -1 by (28.86 & 28.90 %), capsule length by (5.86 & 11.22 %) and No. of seeds capsule-1 by (19.84 & 19.87 %) in comparison to the control treatment in both seasons, respectively.

Spraying GA3 twice at 25 and 45 DAS induced significant values of all vegetative and yield components and seed oil yield in both seasons.

The most effective treatment which gave the highest values of yield and its components in both studied seasons was that of spraying 150 ppm GA3 twice at 25 and 45 DAS which recorded (1036.1 & 1152.5kg fed) for Seed yield, (514.3 & 572.1kg fed) for Oil yield and (20.75 & 23.08) for HI in both seasons, respectively

Research Authors
Howida E Abdelkader
Research Date
Research Department
Department of Agronomy
Research File
3 محاصيل 1586.pdf (675.66 KB)
Research Journal
مجلة اسيوط لعلوم الزراعية
Research Member
Howida Izzedine Abdel-kadir Ahmed

Biochar-Based Sustainable Control of Stalk and Ear Rot in Maize Caused by Fusarium camptoceras

Research Authors
Kamal A. M. Abo-Elyousr, Mansour M. El-Fawy, Asmaa S. El-Nagar , Mohamed K. Abou-Shlell, Najeeb M Almasoudi, Adel D. Al-Qurashi and Nashwa M. A. Sallam
Research Date
Research Department
Department of Plant Pathology
Research Member
Kamal Ahmed Mohamed Abo-Elyousr
Nashwa Mohamed Atef Ahmed Sallam
Research Publisher
https://link.springer.com/journal/41348
Research Rank
Q2
Research Website
https://link.springer.com/journal/41348
Research Year
2026

Streptomyces corchorusii, Sodium Silicate, and Potassium Silicate as Eco-Friendly Alternatives to Control Fungal Rot of Navel Oranges During Cold Storage and Shelf Life

Research Authors
Mohamed I. Elsayed, Najeeb M. Almasoudi, Mohamed A. Awad, Adel D. Al-Qurashi, Abo-Elyousr KAM
Research Date
Research Department
Department of Plant Pathology
Research Journal
BMC Plant Biology
Research Member
Kamal Ahmed Mohamed Abo-Elyousr
Research Publisher
https://link.springer.com/journal/12870
Research Rank
Q1
Research Website
https://link.springer.com/journal/12870
Research Year
2026
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