Data/hora: 03/06/2024 09:02:16

Biblioteca(s): | Embrapa Cerrados.
Data corrente: | 22/11/2021
Data da última atualização: | 22/11/2021
Autoria: | LOPES, V. A.; WEI, M. C. F.; CARDOSO, T. M.; MARTINS, E. de S.; CASAGRANDE, J. C.; MARIANO, E. D.
Afiliação: | VALÉRIA ADRIELE LOPES; MARCELO CHAN FU WEI; TAINÁ MARTINS CARDOSO; EDER DE SOUZA MARTINS, CPAC; JOSÉ CARLOS CASAGRANDE; EDUARDO DAL AVA MARIANO.
Título: | Phosphorus acquisition from phosphate rock by soil cover crops, maize, and a buckwheat?maize cropping system.
Ano de publicação: | 2022
Fonte/Imprenta: | Scientia Agricola, v. 79, n. 4, e20200319, 2022.
Idioma: | Inglês
Conteúdo: | ABSTRACT: Alternatives to enhance the consensual low phosphorus (P) use efficiency of agriculture may include use of phosphate rock (PR) and plant species with unequal ability to get soil and rock P interplanted in cropping systems to allow plants with higher ability to facilitate access to P of plants with lower ability. This study investigated (i) the maize and three soil cover crops on their capacity to acquire P from PR and (ii) measured P acquisition of maize interplanted with the soil cover crop with the highest capacity to acquire P shown in (i). Experiments were carried out in a greenhouse, with plants grown in single and mixed cropping in pots containing a sandy, low?P soil amended with Monocalcium Phosphate (McP) or the Brazilian PR Itafós. Plant biomass production with PR, in relation to McP, was 83.7 % for buckwheat, 83.6 % for forage radish, 51.8 % for maize, and 0.3 % for pigeon pea. Buckwheat showed capacity of acquiring P from PR; nevertheless, it did not increase growth or P nutrition of maize interplanted in the soil amended with PR, showing no significant P facilitation. The soil amended with McP showed competition between the two plants in the pots. Maize had a greater growth in mixed than in single cropping and this occurred at the expenses of buckwheat. Despite the P mobilization potential of buckwheat, its simple interplanting with maize did not produce positive results.
Palavras-Chave: | Competição; Consórcio; Facilitação.
Thesagro: | Fósforo.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/227977/1/Eder-Phosphorus-acqusition.pdf
Registro original: | Embrapa Cerrados (CPAC)
Exemplares: | CPAC - (37152-1) - UPC - AP - DD - DIGITAL -  - DIGITAL - DIS