TY - JOUR

T1 - Toward sustainable agriculture using extracts of natural materials for transferring organic wastes to environmental-friendly ameliorants in Egypt

AU - Rashad, M.

AU - Hafez, M.

AU - Popov, A. I.

AU - Gaber, H.

N1 - Publisher Copyright: © 2022, The Author(s) under exclusive licence to Iranian Society of Environmentalists (IRSEN) and Science and Research Branch, Islamic Azad University.

PY - 2022/8/6

Y1 - 2022/8/6

N2 - Agriculture is a critical socioeconomic sector in Egypt, generating approximately 10–15% of the national gross domestic product. Organic agricultural wastes from food industries are not commonly used as soil ameliorants in Egypt. Therefore, several promising ameliorant systems are poorly developed for Egyptian soils reclamation. So, four directions were applied to developing organic wastes to enhance soil–plant productivity: (1) using industrial wastes as soil ameliorants such as brewer’s spent grain (S2). (2) production of vermicompost from spent grain (VC). The 3rd direction was to extract two humic substances from vermicompost and enrich it with microelements (HS, HS-M). The last direction was the inoculation of Azospirillum to soil (Az). The field experiments were carried out in plots sown in November 2020 with wheat plants for 6 months. The results showed that the Az, VC, S2, HS, and HS-M treatments increased soil fertility and plant growth parameters compared to NPK and control. The mean fresh weight for VC and S2 was 17.45 and 15.92 g plant−1compared to control, and NPK was 12.72 and 14.56 g plant−1, respectively. The higher contents of soil micronutrients were observed with VC and HS-M ameliorants, while the lowest was observed with NPK. Applying S2 and Az to the soil contributed to a significant (P ≤ 0.05) increase in Ca2+ and Mg2+ ions. In conclusion, based on sustainable development goals, this work successfully transferred non-useful organic wastes to environmentally friendly organic wastes to be used as clean soil ameliorants based on sustainability and biological conformity.

AB - Agriculture is a critical socioeconomic sector in Egypt, generating approximately 10–15% of the national gross domestic product. Organic agricultural wastes from food industries are not commonly used as soil ameliorants in Egypt. Therefore, several promising ameliorant systems are poorly developed for Egyptian soils reclamation. So, four directions were applied to developing organic wastes to enhance soil–plant productivity: (1) using industrial wastes as soil ameliorants such as brewer’s spent grain (S2). (2) production of vermicompost from spent grain (VC). The 3rd direction was to extract two humic substances from vermicompost and enrich it with microelements (HS, HS-M). The last direction was the inoculation of Azospirillum to soil (Az). The field experiments were carried out in plots sown in November 2020 with wheat plants for 6 months. The results showed that the Az, VC, S2, HS, and HS-M treatments increased soil fertility and plant growth parameters compared to NPK and control. The mean fresh weight for VC and S2 was 17.45 and 15.92 g plant−1compared to control, and NPK was 12.72 and 14.56 g plant−1, respectively. The higher contents of soil micronutrients were observed with VC and HS-M ameliorants, while the lowest was observed with NPK. Applying S2 and Az to the soil contributed to a significant (P ≤ 0.05) increase in Ca2+ and Mg2+ ions. In conclusion, based on sustainable development goals, this work successfully transferred non-useful organic wastes to environmentally friendly organic wastes to be used as clean soil ameliorants based on sustainability and biological conformity.

KW - Humic substances

KW - Recycling

KW - Soil fertility

KW - Sustainability

KW - Vermi-spent grain

KW - Устойчивость

KW - Переработка отходов

KW - Почвенное плодородие

KW - Вермикомпост

KW - Дробина

KW - Гуминовые вещества

UR - http://www.scopus.com/inward/record.url?scp=85135518576&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/d2fb7b9c-3bc7-3acd-b7b8-f6d359709603/

U2 - 10.1007/s13762-022-04438-8

DO - 10.1007/s13762-022-04438-8

M3 - Article

AN - SCOPUS:85135518576

JO - International Journal of Environmental Science and Technology

JF - International Journal of Environmental Science and Technology

SN - 1735-1472

ER -