Fire‐Free Fallow Management by Mechanized Chopping of Biomass for Sustainable Agriculture in Eastern Amazon: Effects on Soil Compactness, Porosity, and Water Retention and Availability

José Miguel Reichert; Miriam Fernanda Rodrigues; Clóvis Moisés Priebe Bervald; Osvaldo Ryohei Kato

doi:10.1002/ldr.2395

Fire‐Free Fallow Management by Mechanized Chopping of Biomass for Sustainable Agriculture in Eastern Amazon: Effects on Soil Compactness, Porosity, and Water Retention and Availability

Land Degradation and Development ◽

10.1002/ldr.2395 ◽

2015 ◽

Vol 27 (5) ◽

pp. 1403-1412 ◽

Cited By ~ 13

Author(s):

José Miguel Reichert ◽

Miriam Fernanda Rodrigues ◽

Clóvis Moisés Priebe Bervald ◽

Osvaldo Ryohei Kato

Keyword(s):

Sustainable Agriculture ◽

Water Retention ◽

Fallow Management ◽

Soil Compactness

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Biochar Grafted on CMC-Terpolymer by Green Microwave Route for Sustainable Agriculture

Agriculture ◽

10.3390/agriculture11040350 ◽

2021 ◽

Vol 11 (4) ◽

pp. 350

Author(s):

Shimaa M. Elsaeed ◽

E. G. Zaki ◽

Tarek M. Ibrahim ◽

Nasser Ibrahim Talha ◽

Hosam A. Saad ◽

...

Keyword(s):

Sustainable Agriculture ◽

Water Retention ◽

Low Cost ◽

Polymer Network ◽

Water Retention Capacity ◽

Soil Productivity ◽

Soil Water Retention ◽

Biomass Waste ◽

Retention Capacity ◽

Water Swelling

The deficiency of water sources and the environmental disposal of large amounts of biomass waste (orange peels) produces economic and environmental problems, though its conversion into biochar by a pyrolysis procedure might be used to improve soil productivity. In the current study, we investigated the performance of superabsorbent biochar composite grafted on CMC as a low-cost, alternative, and biodegradable terpolymer composite (IPNCB) for soil water retention capacity. The IPNCB composite was synthesized by both microwave and conventional routes. The optimal reaction parameters proved that the microwave route has a high grafting percentage (%G) and short reaction time compared to the conventional route. The superabsorbent composite was characterized using different methods: FTIR, TGA, and SEM. The results show that the equilibrium water swelling (EW) of the IPNCB composite was improved at a 2% biochar concentration. The incorporation of biochar (BC) into the polymer network improved the water holding capacity (WHC) to 57.6% and water retention (WR) to 9.1% after 30 days. The degradation test indicates the IPNCB composite has a good degradability rate. Mixing soil with the prepared IPNCB composite can improve plant growth and reduce water consumption through the irrigation of arid lands. The IPNCB composite is a candidate in sustainable agriculture applications.

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