Title:	Phosphorus acquisition from phosphate rock by soil cover crops, maize, and a buckwheat-maize cropping system.
Authors:	LOPES, V. A. WEI, M. C. F. CARDOSO, T. M. MARTINS, E. de S. CASAGRANDE, J. C. MARIANO, E. D.
Affiliation:	VALÉRIA ADRIELE LOPES; MARCELO CHAN FU WEI; TAINÁ MARTINS CARDOSO; EDER DE SOUZA MARTINS, CPAC; JOSÉ CARLOS CASAGRANDE; EDUARDO DAL AVA MARIANO.
Date Issued:	2022
Citation:	Scientia Agricola, v. 79, n. 4, e20200319, 2022.
Description:	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.
Thesagro:	Fósforo
Keywords:	Competição Facilitação Consórcio
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAC)