Canopy height impact on legume mass and Megathyrsus maximus tiller dynamics in mixed pastures

IF 1.7 4区农林科学 Q2 AGRONOMY

Acta Agriculturae Scandinavica Section B-Soil and Plant Science Pub Date : 2023-07-12 DOI:10.1080/09064710.2023.2226650

Ana Flávia Bastos Ongaro, Janaina Azevedo Martuscello, Flavia Maria de Andrade Gimenes, Ana Carolina Lopes Batista, Lucas Ferreira Penteado, L. M. Premazzi, Waldssimiler Teixeira de Mattos, Marcelo Moretin Vieira, Ricardo Lopes Dias da Costa, L. Gerdes

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引用次数: 2

Abstract

ABSTRACT The use of grazing management strategies can influence canopy structure and the permanence of legumes. The objective of this work was to evaluate the determination of forage canopy heights as a grazing management strategy regarding herbage mass composition and tiller population dynamics in multispecies pastures comprising Megathyrsus maximus cv. Aruana and the legumes Macrotyloma axillare, Calopogonium mucunoides and Stylosanthes spp. Four treatments, defined by canopy heights of 15, 30, 45 and 60 cm, were evaluated in a randomised block design with four replications. The evaluations were performed under continuous stocking with sheep. Taller pastures (45 and 60 cm) contained greater (P < 0.05) total herbage mass of Aruana leaves and stems and also higher mass of legumes than smaller pastures (15 and 30 cm). The grass tiller population density was different between heights (P < 0.05) of 2.71, 2.02, 1.97 and 1.47 tillers/m2 for heights of 15, 30, 45 and 60 cm, respectively. The tiller appearance rate was highest in tall pastures (P < 0.05) and the lowest rate and stability index were found in 15 cm pastures. Aruana guineagrass and forage legumes can be managed in the height range of 30–60 cm under continuous stocking. GRAPHICAL ABSTRACT

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来源期刊

Acta Agriculturae Scandinavica Section B-Soil and Plant Science 农林科学-农艺学

CiteScore

4.40

自引率

0.00%

发文量

审稿时长

2.3 months

期刊介绍： Acta Agriculturæ Scandinavica Section B publishes original research in applied soil and plant science with special attention given to to crop production in agri- and horticultural systems. We welcome manuscripts dealing with: Climate smart and sustainable crop production systems Water and nutrient efficiency Soil conservation and productivity Precise agriculture systems Applications of bio- and nanotechnology Digitalisation and robotics Soil-plant interactions Acta Agriculturæ Scandinavica, Section B – Soil & Plant Science forms part of a series of titles published on behalf of the Nordic Association of Agricultural Science (NJF). The series also includes Section A - Animal Science .