Nitrogen, phosphorus, water and sediment losses under sugarcane (Saccharum spp.) and peanut (Arachis hypogaea l.) cultivation

Autor: Paulo Alexandre Silva, Ludhanna Marinho Veras, Teresa Cristina Tarlé Pissarra, Katharine Viana Batista, Maria Elisa Vicentini, Alan Rodrigo Panosso, Glauco de Souza Rolim
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Engineering in Agriculture; Vol. 29 (2021): Publicação Contínua; 420-428
Revista Engenharia na Agricultura-REVENG; v. 29 (2021): Publicação Contínua; 420-428
Engenharia na Agricultura
Universidade Federal de Viçosa (UFV)
instacron:UFV
ISSN: 2175-6813
1414-3984
Popis: Sertãozinho-SP is a major world producer of sugarcane and peanuts. The crop rotation technique recovers soils and brings commercial benefits to producers. Objective: to determine the losses of water, nitrogen (N), phosphorus (P) and sediments, due to the use and occupation of the soil in the peanut and sugarcane crop, using the SWAT model, maintaining the topographic and physical attributes and climatic conditions of the Mogi-Guaçu River sub-watershed, in the Sertãozinho city – SP. To carry out this study, local data from digital elevation maps and soil pedological maps, precipitation, wind, solar radiation, and relative humidity were used. The actual accumulated evapotranspiration was higher in sugarcane (906.7 mm) when compared to peanuts (886.1 mm). Sediment losses were higher in peanuts (300.66 mm) when compared to sugarcane (280.69 mm), as well as losses of N (118.44 and 34.48 kg ha-1) and P (5.456 and 0.805 kg ha-1), respectively. It is concluded that the peanut crop showed the greatest losses of water, nutrients, and sediments, when compared to sugarcane, showing that the land cover directly influenced these losses. Studies like these can aid in decision-making about environmental policies, helping with soil and water conservation in Brazilian sub-watershed. Sertãozinho-SP is a major world producer of sugarcane and peanuts. The crop rotation technique recovers soils and brings commercial benefits to producers. Objective: to determine the losses of water, nitrogen (N), phosphorus (P) and sediments, due to the use and occupation of the soil in the peanut and sugarcane crop, using the SWAT model, maintaining the topographic and physical attributes and climatic conditions of the Mogi-Guaçu River sub-watershed, in the Sertãozinho city – SP. To carry out this study, local data from digital elevation maps and soil pedological maps, precipitation, wind, solar radiation, and relative humidity were used. The actual accumulated evapotranspiration was higher in sugarcane (906.7 mm) when compared to peanuts (886.1 mm). Sediment losses were higher in peanuts (300.66 mm) when compared to sugarcane (280.69 mm), as well as losses of N (118.44 and 34.48 kg ha-1) and P (5.456 and 0.805 kg ha-1), respectively. It is concluded that the peanut crop showed the greatest losses of water, nutrients, and sediments, when compared to sugarcane, showing that the land cover directly influenced these losses. Studies like these can aid in decision-making about environmental policies, helping with soil and water conservation in Brazilian sub-watershed.
Databáze: OpenAIRE
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