Dynamics of yield and nutritional value for winter forage intercropping - doi: 10.4025/actascianimsci.v34i2.11507

Paris, Wagner; Marchesan, Renato; Cecato, Ulysses; Martin, Thomas Newton; Ziech, Magnos Fernando; Borges, Gisele Daiane Silveira

doi:10.4025/actascianimsci.v34i2.11507

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…At the same time, at the barley stem elongation and heading stages, the competition of rye-grass against the cereal (RY B ) began to intensify, which is probably due to the higher growth rate of rye-grass. Similar observations as regards oats as well as rye-grass and vetch catch crop are presented by Paris et al [80]…”

Section: Relative Yieldssupporting

confidence: 88%

Phosphorus in Spring Barley and Italian Rye-Grass Biomass as an Effect of Inter-Species Interactions under Water Deficit

Kostrzewska¹,

Jastrzębska²,

Treder³

et al. 2020

Agriculture

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With global warming, the problem of soil water deficit is growing in Central Europe, including Poland, and the use of catch crops is recommended to mitigate climate changes. This study aimed to determine the influence of water deficit on phosphorus (P) content and accumulation in the above-ground biomass of spring barley and Italian rye-grass growing separately and in the mixture, and on the inter-species interactions between these crops. The study was based on a pot experiment established in accordance with the additive design. The experimental factors were as follows: A. water supply of the plants: an optimal dose and a dose reduced by 50% in relation to the optimal dose, and B. the sowing type: barley sown as a single species, rye-grass sown as a single species, and barley with rye-grass catch crop. Based on the P accumulation in plant biomass, the relative yield of barley and rye-grass, the total relative yield, and the competitive equilibrium index were determined. Water deficit had no effect on the P content in the plants, but it reduced the P accumulation in barley stems, leaves and spikes, as well as in rye-grass stems and leaves, from the emergence to the end of plants’ growing period, both when the plants were sown as a single species and as a mixture. Barley was a stronger competitor than rye-grass. Inter-species competition occurred at the stem elongation and heading of barley. The intensification of inter-species competition for P under water deficit conditions should be taken into account when recommending the undersowing of barley with rye-grass for sustainable agriculture.

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Section: Relative Yieldssupporting

confidence: 88%

Phosphorus in Spring Barley and Italian Rye-Grass Biomass as an Effect of Inter-Species Interactions under Water Deficit

Kostrzewska¹,

Jastrzębska²,

Treder³

et al. 2020

Agriculture

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“…This can be explained by the HA, whose value (1.8 kg DM kg -1 of BW) was higher than that considered limiting to animal intake (1 kg DM kg -1 BW) (Wesp et al, 2016). Moreover, the grazing period in this study was relatively short (75 days) and, during this time, the pasture remained in a vegetative stage, with greater nutritional value, considering that a drop was expected at the end of the cycle (Paris et al, 2012). In herbivores farmed extensively, weight gain can be explained by the nutritional value, HA, HM and structure of the pasture, which allows the animal to select a high-quality diet (Carvalho, Ribeiro, Poli, Moraes, & Delagarde, 2001).…”

Section: Resultsmentioning

confidence: 68%

Grazing height and nitrogen fertilization strategy in black oat/maize succession

Deifeld

Soares

Schmitt

et al. 2021

Semina: Ciênc. Agrár.

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This study was developed to examine the effect of combining nitrogen (N) fertilization strategies and pasture management heights on animal and grain production in an Integrated Crop-Livestock System. The experiment was carried out in the municipality of Abelardo Luz - SC, Brazil, between April 2017 and April 2018. A randomized-block design was adopted, with the treatments arranged in a 2×2 factorial arrangement with three replicates. The first factor was the height of the pasture managed under continuous grazing: high (HH, 20 cm) or low (LH, 12 cm). The second factor corresponded to the N application times: in the winter, in the pasture (NP), and in the summer, in the grain crop (NG), in a single N rate of 200 kg ha-1 as topdressing. The forage species used during the pasture phase was black oat (Avena strigosa Schreb), and the pasture was grazed by Nellore × Charolais crossbred steers with an initial body weight of 260 kg. The summer crop was maize (Zea mays). Average daily gain (ADG) and herbage allowance were higher in HH than in LH, whereas animal load was higher in HH. Between the N application times, the animal load was higher in NP. Pasture management height and N fertilization strategy did not affect the variables of number of rows per ear, number of grains per row, thousand-grain weight, or total grain yield, which overall averaged 14,090 kg ha-1. In conclusion, the inversion of nitrogen fertilization between the periods of winter pasture production and grain crop and the management height of the black oat pasture do not compromise the production of maize grains in the summer, or animal production per area. However, steer performance is greater (higher ADG) when the pasture is managed at 20 cm, whereas a high grazing intensity significantly reduces straw on the soil.

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“…Cool-season pastures are used to reduce negative effects of low temperatures on forage quality and productivity by establishing high nutritional pastures with frost-tolerant species (SALGADO et al, 2013). However, these pastures can limit animal performance through their heterogeneity along the productive cycle (PARIS et al, 2012). In this sense, supplementation can be used as a strategy to intensify rearing of heifers by providing nutrients that are not available in pastures, extending grazing season, and thus optimizing forage use, reducing reproductive cycles, and increasing animal performance (DIXON & STOCKDALE, 1999;BARBERO et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Energy supplements for beef heifers on cool season pastures - a database analysis

et al. 2023

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Pooled data analysis is an analytical method that combines results from multiple studies. This technique provides a more robust estimate of the effects of an investigation. We performed a database analysis from seventeen experiments developed at Federal University of Santa Maria, Rio Grande do Sul state, Brazil, between 1999 and 2017 to characterize individual performance per area and stocking rate with or without supplementation of replacement heifers grazing winter pastures. Data were separated into two groups: with and without energy supplement provision, and into five subgroups based on supplement levels. Heifers from both groups were maintained under similar forage biomass and leaf blade allowance. Statistical analyses were run on R software using a ‘meta’ package. Supplement supply increased average daily gain and gain of body condition scores by 11.1% and 20.0%, respectively. Supplement levels higher than 1.2% of body weight resulted in higher weight gain per area, with the stocking rate increasing with higher supplement levels.

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Dynamics of yield and nutritional value for winter forage intercropping - doi: 10.4025/actascianimsci.v34i2.11507

Cited by 5 publications

References 9 publications

Phosphorus in Spring Barley and Italian Rye-Grass Biomass as an Effect of Inter-Species Interactions under Water Deficit

Phosphorus in Spring Barley and Italian Rye-Grass Biomass as an Effect of Inter-Species Interactions under Water Deficit

Grazing height and nitrogen fertilization strategy in black oat/maize succession

Energy supplements for beef heifers on cool season pastures - a database analysis

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