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A batch sorption experiments were carried out to study the role of biosorbent and nano-particles on removal of some heavy metals from aqueous solution. The rice straw waste was used as biosorbent material( by-product of agricultural activity). In addition, Nano-Hydroxyapatite (60 nm) and nano-Zero Valent Iron (25 nm) were used as nanoparticles. The batch sorption was done using rice straw waste (RSW) with three sizes as 0.125, 0.25 and 0.5 mm with Pb 2+ and Ni 2+ with concentrations up to 28.14 and 100 mg/l, respectively. Also, the sorption experiment was conducted using nano-particles (n-HAP and n-ZVI) and phosphate rock for Pb 2+ and Ni 2+ with concentration up to 20 mg/l for Ni and 18.0 mg/l for Pb. The results indicated that RSW (0.250 mm) was best size for heavy metals removal. The rice straw waste has more ability for retention of heavy metals such as Ni and Pb according to linear and Freundlich sorption models. Also, the results indicated that maximum sorption capacity of heavy metals was occurred on Nano-Hydroxyapatite (n-HAP) for both Pb and Ni. These results may be due to the functional groups found in Nano-Hydroxyapatite. When RSW mixed with n-HAP, the results indicated maximum removal percentage of heavy metals. The removal percentage of Pb (99.70%) was more than Ni (38.25%) indicated that the ability of Pb to bind with RSW or n-HAP more than Ni. The current results are very useful in the treatment of wastewaters for the removal of heavy metals, making them suitable for agricultural purposes. The present study recommends a future studies to understand the role of nanomaterials on removal the different heavy metals under different conditions.

Two field trials were conducted in the

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Soil and water contaminants have an impact on ecosystems, agricultural productivity, groundwater, and human health. Therefore, it is necessary to develop new technologies to treat pollution, one of these techniques is the use of nanomaterials (NMs).This study aimed to evaluate the efficiency of bentonite nano-sheet structure (n-Be), hydroxyapatite nanoparticles (HapNP), and their nano-composite (n-Be/HapNC) on immobilizing nickel (Ni), copper (Cu), and lead (Pb) in peanut-cultivated soil. The prepared materials were characterized by X-ray powder diffraction, atomic force microscopy, surface area, and Fourier transform infrared. Eight levels of material were used T1 (bentonite, 1 t ha À1 ), T2 (hydroxyapatite, 1 t ha À1 ), T3 (HapNPs, 50 kg ha À1 ), T4 (HapNPs, 100 kg ha À1 ), T5 (n-Be, 50 kg ha À1 ), T6 (n-Be, 100 kg ha À1 ), T7 (n-Be/ HapNC, 50 kg ha À1 ), and T8 (n-Be/HapNC, 100 kg ha À1 ). The results indicated that the available Ni, Cu, and Pb showed a significant decline in the treated soil, in comparison to untreated. Levels of Ni exhibited a decrease in the following order: T8 < T6 < T7 < T5. Similar patterns were observed for Cu and Pb levels, where treatment T8 exhibited the greatest decline compared to the control. Uptake of heavy metals (HM) by peanut components (leaves, stems, and seeds) showed significant declines for the treatments, compared to the control. Treatment (n-Be/HapNC, 100 kg ha À1 ) showed the lowest transfer coefficient of Ni (0.53) and Cu (0.048) compared to control (0.71 and 0.097), respectively. Treatments of NMs significantly exhibited increases in fresh weight, pods, and seeds, compared to the control. From all findings, it is obtained that nano-forms of such materials can immobilize HM in contaminated soil, enhance its characteristics, decrease HM-uptake by plants, and are considered good immobilizers for HM in soil. These materials play a role in treating contaminated soil and thus making it suitable for agriculture.

The new promising bread wheat cultivar Shandaweel 1 has been selected from one of the advanced lines among the International Maize and Wheat Improvement Center collections ( CIMMYT )grown in wheat research department, Field Crops Research Institute, ARC. Egyptat Shandaweel Research Station. The grain yield of the new cultivar Shandaweel 1 was evaluated through 99 experiments conducted at four different levels; ( 8 macro, 56 micro and 35 verification yield trials)in seasons, respectively. Results proved superiority of the new bread wheat cultivar Shandaweel 1 compared to the commercial checks cultivars Sakha 93, Sakha 94, Gemmeiza 9 and Giza 168 for grain yield at North, South and Middle Delta and Upper Egypt regions. Moreover, the results of the verification yield trials ensure the superiority of Shandaweel 1 cultivar on the commercial wheat cultivar Giza 168 at North, Middle, South Delta and Upper Egypt. Alsothe superiority of Shandaweel 1 cultivar on the commercial wheat cultivar Giza 168 and Gemmeiza 9 at North and South Delta and the Out Valley region was observed and recorded. Thus, we can highly recommended the new cultivar Shandaweel 1to be grow at North Delta, South Delta,Middle Delta, Middle and Upper Egypt and the Out Valley regions. ‫أمدين‬ ‫ابددبمياد‬ ‫بدي,‬ ‫,إبد‬ ‫مدو,يبد‬ ‫بدديف‬ ‫يد‬ ‫مدو‬ , ‫ممدا,‬ ‫محمدد‬ ‫أحمد‬ , ‫صادق‬ ‫محمد‬ ‫إيمان‬ ‫بمدددين‬ ‫اددز‬ , ‫ف‬ ‫مشدد‬ ‫خبددف‬ ‫محمددد‬ , ‫ابدبممجيددد‬ ‫,صدديد‬ ‫دب‬ ‫و‬ ‫أبددو‬ ‫,أبددوب‬ ‫حمددادب‬ ‫د‬ ‫,أسدد‬ ‫مدال‬ ‫أحمدد‬ , ‫محجدو‬ ‫بمسديد‬ ‫ديدا,‬ , ‫دنددبو‬ ‫حمدد‬ , ‫اشدو‬ ‫حسدن‬ , ‫بمسديد‬ ‫حمن‬ ‫ابدبم‬ ‫مصطفى‬ ‫ناديد‬ , ‫وادى‬ ‫بم‬ ‫و,داض‬ , ‫موسدى‬ ‫أحمدد‬ , ‫بممنشداو‬ ‫ابدبمسدي,‬ , ‫ددامى‬ ‫بمب‬ ‫دانى‬ , ‫ددال‬ ‫جمد‬ , ‫ابدبمدددبي,‬ ‫صددبحى‬ , ‫ددويب,‬ ‫سد‬ ‫ابدبمبددع‬ , ‫قمبدد‬ ‫اددا‬ , ‫ددي‬ ‫د‬ ‫بم‬ ‫أبددو‬ ‫صددباد‬ , ‫ابدددبمنو‬ ‫سديد‬ , ‫خامدد‬ ‫ي,‬ ‫ابددبم‬ ‫محمدد‬ , ‫حماد‬ ‫يد‬ ‫س‬ , ‫حسن‬ ‫محمد‬ ‫سيي‬ , ‫سبي,‬ ‫صب‬ , ‫بو‬ ‫بمش‬ ‫ا‬ ‫دال‬ ‫مند‬ , ‫حمن‬ ‫ددبم‬ ‫ابد‬ ‫ددب‬ ‫,ماجد‬ ‫داو‬ ‫بمصد‬ ‫دزب‬ ‫اد‬ , ‫دى‬ ‫بد‬ ‫بممز‬ , ‫ددبممن‬ ‫ابد‬ ‫داد‬ ‫مد‬ , ‫دن‬ ‫حسد‬ ‫دمد‬ ‫بدبمصد‬ , ‫د‬ ‫د‬ ‫دجد‬ ‫دادل‬ ‫,اد‬ ‫دا‬ ‫يد‬ ‫ز‬ ‫دد‬ ‫محمد‬ , ‫دي,‬ ‫بمسد‬ ‫دد‬ ‫ابد‬ ‫دان‬ ‫ماد‬ ‫ع‬ ‫بد‬ ‫د‬ ‫مد‬ ‫ددبمفماد‬ ‫ابد‬ , ‫ال‬ ‫ددبم‬ ‫ابد‬ ‫دد‬ ‫محمد‬ ‫أمجد‬ , ‫ي,‬ ‫ابدبم‬ ‫ثناض‬ , ‫ك‬ ‫مبا‬ ‫يوسف‬ ‫محمد‬ , ‫محمود‬ ‫وخ‬ ‫شم‬ ‫محمود‬ , ‫مصطفى‬ ‫طع‬ ‫أحمد‬ ‫بم‬ ‫دى‬ ‫ز‬ ‫وميدد‬ , ‫اجدين‬ ‫ابددبمودا‬ ‫من‬ ‫مد‬ , ‫بداو‬ ‫بمز‬ ‫ددد‬ , ‫سى‬ ‫م‬ ‫محمد‬ , ‫حدا,‬ , ‫يمدانى‬ ‫دب‬ ‫صد‬ ‫بدي,‬ ‫د‬ ‫إبد‬ , ‫دان‬ ‫ناثد‬ ‫ين‬ ‫دي‬ ‫شد‬ , ‫داد‬ ‫جد‬ ‫بدي,‬ ‫د‬ ‫إبد‬ ‫دد‬ ‫خامد‬ , ‫دب‬ ‫ددم‬ ‫بمد‬ ‫دد‬ ‫خامد‬ , ‫دد‬ ‫ابدبمحميد‬ ‫ديد‬ ‫بمسد‬ ‫ددد‬ ‫ابدبموبحد‬ ‫ددان‬ ‫,جييد‬ ‫محمدددد‬ ‫دددين‬ ‫بمد‬ ‫ددى‬ ‫محد‬ ‫ددد‬ ‫محمد‬ , ‫دددبمماد‬ ‫ابد‬ ‫ددوبى‬ ‫ند‬ ‫ددد‬ ‫محمد‬ , ‫دددبمبطيف‬ ‫ابد‬ ‫ود‬ ‫محد‬ , ‫مصدطفى‬ ‫ادز‬ ‫,مصدطفى‬ ‫بمددين‬ ‫شديا‬ ‫بمددين‬ ‫مدا‬ , ‫ع‬ ‫جم‬ ‫بمدين,ابدبمسي,‬ ‫نو‬ , ‫ادا‬ ‫يف,سدامى‬ ‫ش‬ ‫أبدو‬ ‫دطفى‬ ‫,مصد‬ ‫جدودب‬ ‫ادادل‬ , ‫بي,‬ ‫ابددبم‬ ‫د‬ ‫مسد‬ , ‫شد‬ ‫ش‬ ‫صدفاض‬ ‫محمدد‬ , ‫دا‬ ‫حند‬ ‫دل‬ ‫نبيد‬ , ‫جد‬ ‫د‬ ‫جد‬ ‫دى‬ ‫موسد‬ , ‫دود‬ ‫محمد‬ ‫دل‬ ‫خ...