Spittlebug damage on tropical grass and its impact in pasture-based beef production systems

Autor(es)

Congio, Guilhermo Francklin Souza ^{[1, 2]} ; de Almeida, Pedro Castro ^[2] ; Barreto, Tadeu Ruzza ^[2] ; Tinazo, Vitor Afonso ^[2] ; da Silva, Tiago Alves Correa Carvalho ^[3] ; Costa, Diogo Fleury Azevedo ^[4] ; Corsi, Moacyr ^[2]

Afiliação do(s) autor(es)

^[1] Agrosavia, Colombian Corp Agr Res, Km 14 Via Mosquera, Bogota 250047, Cundinamarca - Colombia

^[2] Univ Sao Paulo, Animal Sci Dept, Luiz de Queiroz Coll Agr USP ESALQ, Ave Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

^[3] Univ New England, Sch Environm & Rural Sci, Armidale, NSW 2351 - Australia

^[4] Univ Queensland, Ctr Anim Sci, Queensland Alliance Agr & Food Innovat, Gatton, Qld 4343 - Australia

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 10, n. 1 JUL 1 2020.
• Citações Web of Science: 0

Resumo

Spittlebugs are the main pest of tropical pastures and Marandu palisade grass (Urochloa brizantha cv. Marandu) is the most representative cultivated pasture in the tropics. Our objective was to characterize Marandu palisade grass responses subjected to Mahanarva (Hemiptera: Cercopidae) attack and to estimate the losses in terms of beef production from pasture-based systems. A set of five experiments were carried out. Three consecutive years of monitoring showed that Mahanarva spittlebugs increased their abundance after first rains with three to four peaks throughout the wet season. A decrease of 66% on herbage yield was observed in the greenhouse trial, with an average decrease of 61% on pools of calcium, magnesium, phosphorus, sulfur, potassium, crude protein, neutral-detergent fiber and in vitro digestible dry matter of Marandu palisade grass. Results from field experiments corroborated with greenhouse trial showing decreases on herbage yield varying from 31 to 43% depending on level of fertilization and grazing severity of Marandu palisade grass. Finally, an unprecedented 154-ha field experiment indicated that Mahanarva decreases 74% the beef productivity (i.e. kg body weight ha(-1)) of Nellore heifers grazing Marandu palisade grass. (AU)

• Processo FAPESP: 09/04701-8 - Caracterização e quantificação dos danos de duas espécies de cigarrinhas (Hemiptera: Cercopidae) em Brachiaria brizantha cv. Marandu sob duas intensidades de corte
• Beneficiário: Guilhermo Francklin de Souza Congio
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 09/14345-4 - Caracterização e quantificação dos danos de duas espécies de cigarrinhas (Hemiptera: Cercopidae) em Brachiaria brizantha cv. Marandu sob duas intensidades de corte
• Beneficiário: Moacyr Corsi
• Modalidade de apoio: Auxílio à Pesquisa - Regular