Compositi on of weeds in diff erent integrated crop-livestock system

• Autor(a) principal: Barbosa, Daniel de Queiroz
• Data de Publicação: 2021
• Outros Autores: Moraes, Anibal, Lang, Claudete Reisdorfer, Oliveira, Leandro Bittencourt, Fernandes, João Pedro Tavares, Crestani, Camila
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Agropecuária Catarinense (Online)
• Texto Completo: https://publicacoes.epagri.sc.gov.br/rac/article/view/1274
• topic: herbology; weed; botanal; matologia; planta daninha; botanal

Globally, the potenti al of integrated systems is recognized as a sustainable way to feed nine billion people in 2050. These systems can increase environmental resilience by increasing biological diversity and by the effective and efficient cycling of nutrients, which entails improving soil quality, in addition to providing ecosystem services and contributi ng to climate change adaptation and mitigation. The objective of this work was to evaluate the occurrence and species composition of weed in the corn crop in the Integrated Crop-Livestock System (ICLS). The experimental design was randomized blocks, with 4 treatments and 3 repetitions. The variety of “BRS Sol da Manhã” corn was cultivated in four systems: crop (C), integrated with crop-livestock (CP), crops-forest (CF) and crops-livestock-forest (CLF), all without the use of herbicide. The occurrence and composition of weeds in the different production systems was evaluated through a survey of the botanical composition in dry matter (kg ha-1). There was a large contribution of Megathyrsus maximus cv. Áries in all systems, mainly in the CLF, as well as a predominance of Urochloa brizantha in the CL, in addition to the of very high contribution Hemarthria altíssima in the CF system. The ICLS produced 5.8t ha-1 corn without the use of herbicides.