Seasonal nitrogen effects on nutritive value in binary mixtures of tall fescue and bermudagrass

Read, John J.; Lang, David J.; Aiken, Glen E.

doi:10.1111/gfs.12246

Cited by 5 publications

(4 citation statements)

References 33 publications

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“…Overall, the nutritive value of ATF was greater with the presence of alfalfa than in tall fescue monocultures (Nave et al, 2014). According to a study conducted by Read, Lang, and Aiken (2017), tall fescue pastures that were fertilized with 150 lb N acre −1 had a range of 7 to 14% CP, which is still, in most instances, lower than the CP values found in this study. The results suggest that the addition of alfalfa to tall fescue mixtures generates an overall increase in nutritive value.…”

Section: Forage Nutritive Valuecontrasting

confidence: 74%

Harvest interval effects on the persistence and productivity of alfalfa grown as a monoculture or in mixtures in the southeastern United States

Quinby

Nave

Bates

et al. 2020

Crop Forage & Turfgrass Mgmt

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For alfalfa (Medicago sativa L.) to be profitable in the southeastern United States, enhanced persistence is required. However, studies assessing alfalfa's persistence in monoculture or mixtures in the region are limited. We aimed to determine the persistence and productivity of alfalfa and alfalfa–grass mixtures subjected to different harvest intervals. Three species combinations were established in 2015: alfalfa (A), alfalfa–tall fescue [Schenodorus arundinaceus (Schreb.) Dumort] (ATF), and alfalfa–bermudagrass [Cynodon dactylon (L.) Pers.] (AB). These were subjected to four harvest intervals (21, 28, 35, and 42 d) during the 2016, 2017, and 2018 growing seasons. Total forage accumulation (FA) was quantified during 2017 and 2018 and nutritive value and stem density were measured at the first and last harvests in those years. Forage accumulation decreased in all species combinations after 2 yr of management (A: 21 d, –63%; 28 d, –66%; 35 d, –50%; 42 d, –31%; AB: 21 d, –22%; 28 d, –59%; 35 d, –34%; 42 d, –19%; ATF: 21 d, –41%; 28 d, –62%; 35 d, –64%; 42 d, –41%), reflecting decreased alfalfa stem density, especially for A and AB. The differences in alfalfa stem density between the first and last harvests depended on the species. No differences were observed in ATF mixtures but for AB and A, longer harvest intervals had up to 90% fewer stems, thus decreasing alfalfa's persistence in the field. Lower stem density was observed for the 21‐d harvest interval; therefore, longer intervals could result in better field performance.

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Section: Forage Nutritive Valuecontrasting

confidence: 74%

Harvest interval effects on the persistence and productivity of alfalfa grown as a monoculture or in mixtures in the southeastern United States

Quinby

Nave

Bates

et al. 2020

Crop Forage & Turfgrass Mgmt

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show abstract

“…According to these authors, the grasses intercropped showed phenotypic plasticity, that is, the plants changed their growth pattern due to the competition for abiotic resources (e.g., light). Consequently, this caused a reduction in the stem diameter, thus decreasing the allocation of photosyn-thesis products and energy towards the deposition of structural carbohydrates, such as cellulose and lignin polymers, which could potentially enhance the nutritive value of intercropped grasses [47,48].…”

Section: Fm and Chemical Composition Of The Silagementioning

confidence: 99%

Sustainable Production of Maize with Grass and Pigeon Pea Intercropping

et al. 2023

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This study aimed to assess the impact of intercropping pigeon pea (Cajanus cajan cv. Super N) with maize (Zea mays cv. AG 5055) and Paiaguás palisadegrass (Urochloa brizantha cv. BRS Paiaguás) on grain yield, silage chemical composition, and post-harvest grazing forage. The experiment was conducted on the School Farm of Instituto Federal Goiano, Campus Iporá. The experiment treatments consisted of three cropping systems: pigeon pea and Paiaguás palisadegrass intercropping (PPPG), maize and Paiaguás palisadegrass intercropping (CPG), and maize, pigeon pea, and Paiaguás palisadegrass intercropping (CPPPG), respectively. It was observed after the fermentation process that the PPPG silage promoted the lowest values of forage mass (FM) and a reduction in the dry matter (DM) concentration. The PPPG silage showed higher values of crude protein (75.28 g kg−1 DM), while the CPPPG silage showed proportionately higher values of total digestible nutrients (616.11 g kg−1 DM). The intercropping did not affect the corn grain productivity, thus obtaining an average value of 4.78 Mg ha-1. After the silage harvest, during the dry season, a similar forage availability was obtained between the treatments (3.73 Mg ha−1). All three cultivation strategies produced abundant forage for grazing, showing that integrated intercropping systems can mitigate the seasonality in tropical forage production.

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“…The information reported in the literature regarding mixed canopies containing perennial C 3 and C 4 grass species comes from studies conducted in areas with the Cfa climate. Some previous studies have demonstrated that the success of this type of mixed canopy depends on two factors: the coolseason perennial grass should be tolerant to heat, drought, and low soil fertility (Pitman, 1999;Read, Lang, & Aiken, 2016) and should be symbiotically associated with endophytic fungi (Franzluebbers et al, 2013) because the endophyte confers greater resistance against biotic and abiotic stresses (Bouton, Gates, Belesky, & Owsley, 1993;Malinowski & Belesky, 2000). However, such symbiotic associations between a plant and fungus can lead to the production of secondary metabolites by the endophyte, such as ergovaline, which can lead to losses in animal performance (Hoveland, 1993).…”

Section: Introductionmentioning

confidence: 99%

Canopy structure of mixed kikuyugrass–tall fescue pastures in response to grazing management

et al. 2020

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The effects of different management strategies on improving growth and modifying the botanical composition of C3 and C4 perennial grasses grown in a mixed canopy are underexplored. We aimed to evaluate the botanical composition and vegetation dynamics of a mixed canopy containing kikuyugrass (Pennisetum clandestinum Hochst. Ex Chiov) and tall fescue (Festuca arundinacea Schreber cv. Rizomat) subjected to four grazing management strategies over 22 mo. The experimental design was a randomized complete block in a factorial arrangement (two maintenance canopy heights: grazed to 7 cm in the autumn, or uninterrupted and maintained at 12 or 17 cm) with three replicates. The plots were sampled every month throughout the experimental period; the forage mass data were used to determine the botanical composition and leaf area index of the canopy. Although autumn grazing to 7‐cm height promoted an increase in pasture leaf proportion, it did not represent an effective augment in pasture leaf mass in the following winter–spring season. Canopies heights managed at 17 cm presented a greater proportion of tall fescue in herbage mass (81%) compared with those maintained at 12 cm (73%). Severe defoliation in the autumn delayed the regrowth to 12‐ or 17‐cm canopy heights by approximately 90–120 d in both evaluation years. From a farm‐level perspective, this result would restrict the recommendation of this grazing management strategy because this time lapse would demand that the pastures not be grazed for the 25–33% period of the year compared with the pastures that were not grazed in the autumn.

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Seasonal nitrogen effects on nutritive value in binary mixtures of tall fescue and bermudagrass

Cited by 5 publications

References 33 publications

Harvest interval effects on the persistence and productivity of alfalfa grown as a monoculture or in mixtures in the southeastern United States

Harvest interval effects on the persistence and productivity of alfalfa grown as a monoculture or in mixtures in the southeastern United States

Sustainable Production of Maize with Grass and Pigeon Pea Intercropping

Canopy structure of mixed kikuyugrass–tall fescue pastures in response to grazing management

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