A. M. Helmy

Global patterns of soil gross immobilization of ammonium and nitrate in terrestrial ecosystems

Ahmed S. Elrys, Zhaoxiong Chen, Jing Wang et al. · Global Change Biology · 2022 · 105 citations · Full text

Assessment of Water Quality of Wastewaters of Bahr El-Baqar, Bilbies and El-Qalyubia Drains in East Delta, Egypt for Irrigation Purposes

A. M. Helmy · Egyptian Journal of Soil Science · 2015 · 27 citations · Full text

Agronomic performance and chemical response of sunflower (Helianthus annuus L.) to some organic nitrogen sources and conventional nitrogen fertilizers under sandy soil conditions

A. M. Helmy, Mohamed Fawzy Ramadan · Grasas y Aceites · 2008 · 26 citations · Full text

Conventional Fertilizer, Biogeochemistry, Engineering +13

Yield Quality Parameters and Chemical Composition of Peanut as Affected by Potassium and Gypsum Applications under Foliar Spraying with Boron

A. M. Helmy, Mohamed Fawzy Ramadan · Communications in Soil Science and Plant Analysis · 2014 · 11 citations

Engineering, Botany, Soil Amelioration +19

Biochar with Organic and Inorganic Fertilizers Improves Defenses, Nitrogen Use Efficiency, and Yield of Maize Plants Subjected to Water Deficit in an Alkaline Soil

Norhan M. M. El-Syed, A. M. Helmy, Sara E. E. Fouda et al. · Sustainability · 2023 · 11 citations · Full text