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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Soybean yield and nutrition after tropical forage grasses

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Autor(es):
Costa, Nidia Raquel [1] ; Andreotti, Marcelo [2] ; Crusciol, Carlos Alexandre Costa [1] ; Pariz, Cristiano Magalhaes [3] ; Bossolani, Joao William [1] ; Pascoaloto, Isabo Melina [1] ; da Rocha Lima, Cesar Gustavo [4] ; dos Santos Batista Bonini, Carolina [5] ; de Castilhos, Andre Michel [3] ; Calonego, Juliano Carlos [1]
Número total de Autores: 10
Afiliação do(s) autor(es):
[1] UNESP, Dept Crop Sci, Coll Agr Sci, Botucatu, SP - Brazil
[2] UNESP, Coll Engn, Dept Soil Sci, Ilha Solteira, SP - Brazil
[3] UNESP, Dept Anim Nutr & Breeding, Sch Vet Med & Anim Sci, Botucatu, SP - Brazil
[4] UNESP, Coll Engn, Dept Civil Engn, Ilha Solteira, SP - Brazil
[5] UNESP, Coll Agron & Technol Sci, Dracena, SP - Brazil
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: NUTRIENT CYCLING IN AGROECOSYSTEMS; v. 121, n. 1 JUL 2021.
Citações Web of Science: 0
Resumo

In tropical agroecosystems, intercropping crops and including perennial forages can increase crop system diversity and sustainability. However, adequate management of cash crops in crop rotation under no-till requires an understanding of the release of nutrients by surface mulch. This study evaluated the effects of two sowing times and nitrogen (N) management of palisade grass {[}Urochloa brizantha (A. Rich.) Stapf Marandu] and guinea grass {[}Megathyrsus maximus (Jacq.) B.K. Simon \& S.W.L. Jacobs Tanzania] on forage production, nutrient accumulation, and decomposition rates; soybean {[}Glycine max (L.) Merrill] yield; and soil chemical properties over three growing seasons. Palisade and guinea grasses were sown for intercropping with sorghum {[}Sorghum bicolor (L.) Moench] in the growing season or after sorghum silage harvest (hereafter succession) and subjected to N fertilization management (urea - 0 and 70 kg N ha(-1) cut(-1), totalling 210 kg N ha(-1) per season) during the off-season. Nitrogen fertilization increased nutrient accumulation in surface mulch in all cropping systems. Regardless of cropping system, N rates, or growing season, palisade and guinea grass provided an adequate plant biomass production, soil cover throughout the year, soybean nutrient use efficiency, and soil quality. Soybean was positively influenced by N fertilization of grasses sown in succession to sorghum. Guinea grass had the greatest effect on soybean grain yield, with an improvement of 0.8 Mg ha(-1). Sowing grasses in succession to sorghum positively affected soil pH, Ca, Mg, and base saturation. (AU)

Processo FAPESP: 11/01057-0 - Desempenhos técnicos e econômicos de sistemas de produção na integração lavoura-pecuária visando a sustentabilidade do sistema plantio direto no cerrado
Beneficiário:Nídia Raquel Costa
Modalidade de apoio: Bolsas no Brasil - Doutorado