Abstract

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, Paraiba, Brazil. Five planting densities were used, varying from 5 to 2 5 m2 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 1J due to the higher plant height (2.37 m) and the higher number of stalks ( 11 stalks m2), 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 nr2 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.

Alternate abstract:

O método de plantio de cana-de-açÛcar de baixa densidade (LDSP) vem sendo implementado por alguns produtores de cana-de-açÛcar no Brasil, visando economía de sementes e custos operacionais. O estudo foi realizado no municipio de Areia, Paraiba, Brasil. Utilizou-se cinco densidades de plantio, variando de 5 a 25 nr2 de gemas dispostas em blocos casualizados, com quatre repetiçôes. Os dados foram medidos anualmente ao longo de très ciclos de cultivo (2017 a 2020). Menor densidade de plantio mostrou maior produtividade (101,031 ha 1J devido à maior altura de planta (2,37 m) e ao maior número de hastes (NS) ( 11 hastes nr2), sugerindo que essas variâveis sâo devido à maior disponibilidade de luz, âgua e fotoassimilados. No entanto, houve reduçâo drástica na produtividade da cana-de-açÛcar para esta populaçâo menor na 2 soca em 65,62%, estando correlacionado com o número de colmos por metro. Demonstramos a viabilidade agronómica do LDSP em urna populaçâo de 10 gemas nr2 em relaçâo ao plantio convencional de cana-de-açÛcar até a 2 soca. Os dados sâo importantes para que estudos futuros apresentem consideraçôes adicionáis sobre outres fatores de produçâo, como os efeitos da colheita mecanizada e do manejo de nutrientes e âgua, avahando a sustentabilidade desse sistema de plantio em larga escala.

Details

Title
Agronomic parameters of sugarcane under planting densities in different cultivation cycles
Author
Costa, J E 1 ; Silva, J H B 1 ; Silva, I D N 1 ; Silva, G M L 1 ; Nascimento, R R A 1 ; Silva, J S L; Barbosa, J M S; Cardoso, E V B; Silva, A V; Nascimento, M A; Santos1, J P O; Martins, A H P C; Neto, E Pereira; Amorim, P M D; Silvad, B O T; Almeida, L J M; Mielezrski, F

 Universidade Federal da Paraiba, Areia, PB, Brasil 
Pages
1-6
Section
Original Article
Publication year
2023
Publication date
2023
Publisher
Instituto Internacional de Ecologia
ISSN
15196984
e-ISSN
16784375
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2909809352
Copyright
© 2023. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.