| Autor: |
Costa JE; Universidade Federal da Paraíba, Areia, PB, Brasil., Silva JHB; Universidade Federal da Paraíba, Areia, PB, Brasil., Silva IDN; Universidade Federal da Paraíba, Areia, PB, Brasil., Silva GML; Universidade Federal da Paraíba, Areia, PB, Brasil., Nascimento RRA; Universidade Federal da Paraíba, Areia, PB, Brasil., Silva JSL; Universidade Federal da Paraíba, Areia, PB, Brasil., Barbosa JMS; Universidade Federal da Paraíba, Areia, PB, Brasil., Cardoso EVB; Universidade Federal da Paraíba, Areia, PB, Brasil., Silva AV; Universidade Federal da Paraíba, Areia, PB, Brasil., Nascimento MA; Universidade Federal da Paraíba, Areia, PB, Brasil., Santos JPO; Instituto Federal do Tocantins, Lagoa da Confusão, TO, Brasil., Martins AHPC; Universidade Federal da Paraíba, Areia, PB, Brasil., Pereira Neto F; Universidade Federal do Agreste de Pernambuco, Garanhuns, PE, Brasil., Amorim PMD; Universidade Federal do Agreste de Pernambuco, Garanhuns, PE, Brasil., Silva BOT; Universidade Federal Rural de Pernambuco, Recife, PE, Brasil., Almeida LJM; Universidade Federal da Paraíba, Areia, PB, Brasil., Mielezrski F; Universidade Federal da Paraíba, Areia, PB, Brasil. |
| Abstrakt: |
Low density sugarcane plantation (LDSP) has been implemented by some sugarcane producers in Brazil, aiming to save seeds and operational costs. The study was carried out in the municipality of Areia, Paraíba, Brazil. Five planting densities were used, varying from 5 to 25 m-2 of buds arranged in randomized blocks, with four replications. Data were measured annually over three cultivation cycles (2017 to 2020), during which the field was fertilized with NPK and the harvests were carried out manually without prior burning. The lower planting density presents higher productivity only in the cane plant (101.03 t ha-1) due to the higher plant height (2.37 m) and the higher number of stalks (11 stalks m-2), suggesting that these variables are due to the greater availability of light, water and photosynthate. However, there is a drastic reduction in sugarcane yield for this lower population in the 2nd ratoon by up to 65.62%, which is correlated with number of stalks per meter. We demonstrate the agronomic viability of LDSP in the population of 10 buds m-2 in relation to conventional planting of sugarcane until the 2nd ratoon. Data are important for future studies to present additional considerations for other production factors, such as the effects of mechanized harvesting and the management of nutrients and water, assessing the sustainability of this large-scale planting system. |
