Grass and Forage Science最新文献

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Mixed Swards of Annual Legumes and Ryegrass Improve Biomass, N Yield and Resource Use in Mediterranean Conditions 一年生豆科植物和黑麦草混种提高地中海条件下生物量、氮产量和资源利用
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2026-01-06 DOI: 10.1111/gfs.70031
Soledad Espinoza, Giordano Catenacci-Aguilera, Belén Acosta-Gallo, Alejandro del Pozo
{"title":"Mixed Swards of Annual Legumes and Ryegrass Improve Biomass, N Yield and Resource Use in Mediterranean Conditions","authors":"Soledad Espinoza,&nbsp;Giordano Catenacci-Aguilera,&nbsp;Belén Acosta-Gallo,&nbsp;Alejandro del Pozo","doi":"10.1111/gfs.70031","DOIUrl":"https://doi.org/10.1111/gfs.70031","url":null,"abstract":"<div>\u0000 \u0000 <p>Legumes, through atmospheric N fixation, enhance soil health and fertility by increasing organic matter and nitrogen (N) availability. This study evaluated the productivity, N fixation and N transfer from annual legume mixtures (LM) to a companion ryegrass (<i>Lolium multiflorum</i>) in mixed swards, under Mediterranean conditions. The LM swards with different phenologies (designated M400, M500 and M600), comprised cultivars of <i>Trifolium subterraneum</i>, <i>T. michelianum</i> and <i>Medicago polymorpha</i>, grown either alone or in combination with ryegrass (LM + <i>R</i>). Plots were established in May 2014 and were evaluated from 2014 to 2017. Dry matter production varied significantly among LM, LM + <i>R</i> and ryegrass monocultures across the different years. The LM + <i>R</i> swards produced 35%–47% more dry matter than LM swards and 33%–68% more than ryegrass alone. The mixture M400 + ryegrass achieved the highest production (6.64 t ha<sup>−1</sup> average; 14.85 t ha<sup>−1</sup> in 2015). N derived from the atmosphere ranged from 84% to 94% in LM swards. The mixture M500 fixed the highest amount of N across years. The nitrogen yield (kg N ha<sup>−1</sup>) was higher in LM + <i>R</i> swards compared to LM alone. M600 showed the highest N transfer to ryegrass. All LM + <i>R</i> swards had land equivalent ratio (LER) &gt; 1, indicating better resource use than monocultures. The demonstrated benefits of mixed cropping systems—higher productivity, enhanced N fixation, effective N transfer and improved resource use efficiency—align with the goals of reducing synthetic fertiliser dependency and mitigating environmental impacts.</p>\u0000 </div>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"81 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145909172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Morphophysiological and Productive Responses of Forage Cactus Clones to the Water and Nutrient Use in the Brazilian Semi-Arid Region 巴西半干旱区饲用仙人掌无性系对水分和养分利用的形态生理和生产响应
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2025-12-28 DOI: 10.1111/gfs.70027
João Pedro Alves de Souza Santos, Alexandre Campelo de Oliveira, José Edson Florentino de Morais, Alexandre Maniçoba da Rosa Ferraz Jardim, Cleber Pereira Alves, George do Nascimento Araújo Junior, Carlos André Alves de Souza, Kaique Renan da Silva Salvador, Marcelo José da Silva, José Orlando Nunes da Silva, Luciana Sandra Bastos de Souza, Mário Adriano Ávila Queiroz, Abelardo Antônio de Assunção Montenegro, Fleming Sena Campos, Thieres George Freire da Silva
{"title":"Morphophysiological and Productive Responses of Forage Cactus Clones to the Water and Nutrient Use in the Brazilian Semi-Arid Region","authors":"João Pedro Alves de Souza Santos,&nbsp;Alexandre Campelo de Oliveira,&nbsp;José Edson Florentino de Morais,&nbsp;Alexandre Maniçoba da Rosa Ferraz Jardim,&nbsp;Cleber Pereira Alves,&nbsp;George do Nascimento Araújo Junior,&nbsp;Carlos André Alves de Souza,&nbsp;Kaique Renan da Silva Salvador,&nbsp;Marcelo José da Silva,&nbsp;José Orlando Nunes da Silva,&nbsp;Luciana Sandra Bastos de Souza,&nbsp;Mário Adriano Ávila Queiroz,&nbsp;Abelardo Antônio de Assunção Montenegro,&nbsp;Fleming Sena Campos,&nbsp;Thieres George Freire da Silva","doi":"10.1111/gfs.70027","DOIUrl":"https://doi.org/10.1111/gfs.70027","url":null,"abstract":"<p>Crops adapted to semi-arid conditions enhance forage supply amid water scarcity. This study aimed to compare six forage cactus clones (Orelha de Elefante Mexicana [OEM<i>, Opuntia stricta</i> (Haw.) Haw.]; Orelha de Elefante Africana [OEA, <i>Opuntia undulata</i> Griffiths]; V19, <i>Opuntia larreyi</i> F.A.C. Weber ex Coult.; F8, <i>Opuntia atropes</i> Rose; MIUDA (MIU) and IPA-Sertânia (IPA), <i>Nopalea cochenillifera</i> (L.) Salm-Dyck) in terms of morphophysiological traits, forage production, nutrient and water use efficiency, and economic viability under irrigation in a semi-arid environment. The experiment was conducted from December 2016 to September 2022 in randomised blocks, with treatments of six clones: OEM, OEA, V19, F8, MIU and IPA, with three replicates. Phenology, morphophysiological rates, cutting time, productivity, water balance, water and nutrient use efficiency and crop economic indicators were determined. Plant tissue analyses were carried out to determine concentrations, coefficient of biological utilisation (CBU) and nutrient use efficiency (NUE). The OEM exhibited the highest annual average fresh matter yield (300 Mg ha<sup>−1</sup> year<sup>−1</sup>) and dry matter yield (24 Mg ha<sup>−1</sup> year<sup>−1</sup>). The efficiencies of water productivity, net and gross economic productivity of the total water applied to the system, and irrigation varied depending on the clone and cycle. The CBU of all nutrients showed an inverse relationship with cladode nutrient concentrations. This indicates that the CBU increased as the nutrient concentration in plant tissues decreased across all clones analysed. The OEM clone showed the highest NUE for all nutrients. OEM was more productive and had higher water and nutrient use efficiencies. Furthermore, the MIU clone showed superior economic efficiency in irrigation water use.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"80 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gfs.70027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145887693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Harvest Stage and Ensiling on Contents of Crude Nutrients, Amino Acids, Riboflavin and Secondary Plant Metabolites of Winter Catch-Crops Vicia sativa, Vicia villosa and Vicia pannonica 收获期和青贮对冬捕作物豌豆、绒毛豌豆和紫豌豆粗营养素、氨基酸、核黄素和次生植物代谢物含量的影响
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2025-12-28 DOI: 10.1111/gfs.70025
Sina Stepczynski, Karen Aulrich, Herwart Böhm, Stephanie Witten
{"title":"Effect of Harvest Stage and Ensiling on Contents of Crude Nutrients, Amino Acids, Riboflavin and Secondary Plant Metabolites of Winter Catch-Crops Vicia sativa, Vicia villosa and Vicia pannonica","authors":"Sina Stepczynski,&nbsp;Karen Aulrich,&nbsp;Herwart Böhm,&nbsp;Stephanie Witten","doi":"10.1111/gfs.70025","DOIUrl":"https://doi.org/10.1111/gfs.70025","url":null,"abstract":"<p>This study compares properties of fresh and ensiled vetch forage harvested at different growth stages: bud-, flowering-, pod formation- and pod filling stage. The research focused on three vetch species—<i>Vicia sativa</i> L. (VS), <i>Vicia pannonica</i> Crantz. (VP) and <i>Vicia villosa</i> Roth. (VV)—each represented by two varieties and cultivated in Northern Germany. The forages were ensiled with buffered formic acid and <i>Lactobacillus plantarum</i> on a laboratory scale in 1 L jars for 90 days, with four replicates per variety at each harvest stage. First, the effect of maturity stage on silage properties of whole-crop vetch was studied. The crude protein (CP), amino acid (AA), ether extract, crude ash and riboflavin contents declined during maturation (<i>p</i> &lt; 0.05), while the unfavourable secondary metabolites γ-glutamyl-ß-cyanoalanine (GCA), ß-cyanoalanine (BCA) and vicine were mainly present at the pod filling stage of VS. These findings suggest that earlier growth stages are preferable as forage. Secondly, the study compared silages to the respective fresh forage to evaluate the degradation of undesired secondary plant metabolites and the conserving effect on CP, AA and riboflavin during ensiling. The ensiling process conserved CP, AA and riboflavin, while GCA, BCA and vicine were broken down (<i>p</i> &lt; 0.05) with reduction rates of 88.2%–99.8%, 64.8%–100% and 99.9%–100%, respectively. These results indicate that ensiling is an effective conservation method for vetch forage. The occurrence of undesirable microorganisms was suppressed, as evidenced by the absence or minimal presence of butyric acid, ethanol and ammonia-N.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"80 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gfs.70025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145887660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calibrating and Validating the Use of Rising Plate Meter to Estimate Herbage Mass in Multispecies Swards 上升板计在多种草地牧草质量估算中的校准与验证
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2025-12-17 DOI: 10.1111/gfs.70030
Shona Baker, Israel Ikoyi, Helen Sheridan, John A. Finn, Jane Shackleton, Cornelia Grace, Guylain Grange, Mary B. Lynch
{"title":"Calibrating and Validating the Use of Rising Plate Meter to Estimate Herbage Mass in Multispecies Swards","authors":"Shona Baker,&nbsp;Israel Ikoyi,&nbsp;Helen Sheridan,&nbsp;John A. Finn,&nbsp;Jane Shackleton,&nbsp;Cornelia Grace,&nbsp;Guylain Grange,&nbsp;Mary B. Lynch","doi":"10.1111/gfs.70030","DOIUrl":"https://doi.org/10.1111/gfs.70030","url":null,"abstract":"<div>\u0000 \u0000 <p>Grazing management critically depends on practical, efficient, and parsimonious methods for estimating herbage mass to enable prompt decision-making under diverse pasture conditions. This study evaluated the rising plate meter (RPM) as a rapid, non-destructive tool for herbage mass estimation in multispecies swards (MSS) compared to perennial ryegrass (PRG) and PRG–white clover (PRGWC) swards. Five field trials at three Irish sites produced a dataset of 1220 observations (herbage mass range per harvest: 310–3991 kg DM ha<sup>−1</sup>). Five calibration models were developed and compared: Model 1 used a fixed multiplier approach (herbage height [HH] × 250); Model 2 included HH; Model 3 incorporated HH and sward type; Model 4 included HH and season and Model 5 incorporated HH, season and sward type along with their interaction. Model 5 achieved the highest statistical performance with the lowest root mean square error (RMSE; 244 kg DM ha<sup>−1</sup>), highest coefficient of determination (<i>R</i><sup>2</sup>; 0.81) and lowest AIC value demonstrating the theoretical benefit of including seasonal and sward-specific effects. However, Model 1, while slightly less accurate (RMSE = 277 kg DM ha<sup>−1</sup>; <i>R</i><sup>2</sup> = 0.75), performed robustly despite its greater parsimony and ease of use. For routine on-farm decision-making, the marginal improvements provided by Model 5 may not justify its added complexity. These results suggest that the simple RPM calibration equations can provide herbage mass estimation in MSS that are no less effective than those used in PRG and PRGWC systems.</p>\u0000 </div>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"80 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Guest Editorial. Topics at EGF2024 客人编辑。EGF2024主题
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2025-12-15 DOI: 10.1111/gfs.70026
Alan Hopkins, Anjo Elgersma
{"title":"Guest Editorial. Topics at EGF2024","authors":"Alan Hopkins,&nbsp;Anjo Elgersma","doi":"10.1111/gfs.70026","DOIUrl":"https://doi.org/10.1111/gfs.70026","url":null,"abstract":"","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"80 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stocking Method Effects on Canopy Characteristics and Herbage Accumulation of Mulato II Brachiariagrass 放养方式对毛拉多腕足草冠层特性和牧草积累的影响
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2025-12-15 DOI: 10.1111/gfs.70028
Otávio Goulart de Almeida, Carlos Guilherme Silveira Pedreira, Junior Issamu Yasuoka, Solange Garcia Holschuch, Gabriel Baracat Pedroso, Fagner Júnior Gomes, Valdson José da Silva, Alyce Monteiro, Renata La Guardia Nave
{"title":"Stocking Method Effects on Canopy Characteristics and Herbage Accumulation of Mulato II Brachiariagrass","authors":"Otávio Goulart de Almeida,&nbsp;Carlos Guilherme Silveira Pedreira,&nbsp;Junior Issamu Yasuoka,&nbsp;Solange Garcia Holschuch,&nbsp;Gabriel Baracat Pedroso,&nbsp;Fagner Júnior Gomes,&nbsp;Valdson José da Silva,&nbsp;Alyce Monteiro,&nbsp;Renata La Guardia Nave","doi":"10.1111/gfs.70028","DOIUrl":"https://doi.org/10.1111/gfs.70028","url":null,"abstract":"<div>\u0000 \u0000 <p>Stocking methods have been shown to impact pasture canopy traits and herbage accumulation, but meaningful comparisons across methods require equivalent canopy conditions. This study assessed the effects of two mean canopy heights (20 and 30 cm) and three stocking methods (continuous stocking, CS; rotational stocking with lenient defoliation, RSL; and rotational stocking with moderate defoliation, RSM) on herbage mass (HM), herbage accumulation rate (HAR) and canopy structural characteristics of ‘Mulato II’ brachiariagrass (<i>Urochloa</i> spp. syn. <i>Brachiaria</i> spp.) across two summer growing seasons in Piracicaba, São Paulo, Brazil. Under CS, pastures were maintained at heights of 20 and 30 cm (±10% height variation). For RSL, it involved a ±20% height variation (33% defoliation intensity), while RSM had a ±30% height variation (approximately 47% defoliation intensity). The HAR averaged 97 kg DM ha<sup>−1</sup> day<sup>−1</sup> and did not differ across treatments. The HM was 32% greater at 30 cm than at 20 cm (7430 vs. 5640 kg DM ha<sup>−1</sup>, respectively) but did not vary among stocking methods (6540 kg DM ha<sup>−1</sup>). The RSM required longer rest periods between grazings (36–58 days for heights of 20–30 cm, respectively) than RSL. At 20 cm, tiller population density was 12% greater than at 30 cm, although individual tillers were smaller (0.50 vs. 0.76 g DM tiller<sup>−1</sup>), as was the leaf area index (4.6 vs. 5.8). Despite similar HAR across treatments, canopy height was the main driver of structural responses. Managing Mulato II at 20 cm promotes an efficient canopy structure and rapid tissue turnover, making it the most favourable option under CS while still allowing flexibility across stocking methods.</p>\u0000 </div>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"80 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of Manure Application Techniques on the Microbial Content of Grass and Grass Silage 施肥技术对牧草和青贮牧草微生物含量的影响
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2025-12-08 DOI: 10.1111/gfs.70019
Samart Dorn-In, Hanna Geißler, Katrin Harms, Claudia Guldimann, Hubert Spiekers, Michael Diepolder, Karin Schwaiger
{"title":"Influence of Manure Application Techniques on the Microbial Content of Grass and Grass Silage","authors":"Samart Dorn-In,&nbsp;Hanna Geißler,&nbsp;Katrin Harms,&nbsp;Claudia Guldimann,&nbsp;Hubert Spiekers,&nbsp;Michael Diepolder,&nbsp;Karin Schwaiger","doi":"10.1111/gfs.70019","DOIUrl":"https://doi.org/10.1111/gfs.70019","url":null,"abstract":"<p>Field observations of visible dry manure residues in organically fertilised grassland, especially in drought areas in Bavaria (Germany), raised questions about whether different manure application methods influence the microbial composition in grass and in silages. Therefore, the aim of this study was to investigate if and to which extent three manure application methods (broadcast, trailing shoe and disc injector) and a control (mineral fertiliser) influence the microbial quality of grass and grass silage. The following samples were taken in two trial years (2020–2021): Soil (<i>n</i> = 16), manure (<i>n</i> = 10), wilted-chopped grass (<i>n</i> = 96) and grass silage samples (<i>n</i> = 80). The laboratory methods used were cultivation and qPCR. The comparison between the test groups showed no significant difference in the number of aerobic bacteria, lactic acid bacteria, <i>Lactobacillus</i> spp., <i>Enterobacteriaceae</i>, <i>E. coli</i> and yeasts in all sample types. The Clostridia load in soil and grass before fertilisation was similar in all test groups. After fertilisation, grass samples from plots fertilised with the disc injector method had statistically significantly lower Clostridia (2.6 log<sub>10</sub> cfu/g) than samples from the trailing shoe (3.3 log<sub>10</sub>) and the broadcast (3.2 log<sub>10</sub>) but higher than the control group (1.7 log<sub>10</sub>) (<i>p</i> &lt; 0.05). Clostridia counts in silages were between 3.7 and 3.9 log<sub>10</sub> for the manure treatments and 3.3 log<sub>10</sub> for the control. Except for the Clostridia levels in the grass, the results of this study indicate that the grass and silage from the three manure application methods were of similar microbial quality.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"80 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gfs.70019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Defoliation Intensity Affects Bahiagrass Nutritive Value Through Increases in Proportion of Non-Degraded Leaf Tissue Components 落叶强度通过增加未降解叶片组织成分的比例影响百喜草的营养价值
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2025-12-01 DOI: 10.1111/gfs.70023
Nicolas Caram, Lynn E. Sollenberger, Marcelo O. Wallau, Raiza Castillo-Argaez, María E. Mailhos
{"title":"Defoliation Intensity Affects Bahiagrass Nutritive Value Through Increases in Proportion of Non-Degraded Leaf Tissue Components","authors":"Nicolas Caram,&nbsp;Lynn E. Sollenberger,&nbsp;Marcelo O. Wallau,&nbsp;Raiza Castillo-Argaez,&nbsp;María E. Mailhos","doi":"10.1111/gfs.70023","DOIUrl":"https://doi.org/10.1111/gfs.70023","url":null,"abstract":"<div>\u0000 \u0000 <p>Understanding relationships between defoliation intensity, tissue components, and forage nutritive value is important to predict plant and animal responses. In bahiagrass (<i>Paspalum notatum</i> Flügge), the proportion and organisation of non-degraded leaf tissues affect nutritive value, yet these relationships remain understudied. We examined the effects of defoliation intensity (4-, 8-, and 12-cm stubble heights) on canopy structure, leaf length, tissue composition, and nutritive value in decumbent-growing (‘3Fpen8’) and upright-growing (‘Hybrid 93’) bahiagrasses, in a replicated study (<i>n</i> = 4) in Gainesville, Florida, USA. Responses were measured after 3-week regrowth periods during mid-summer, late summer, and early fall in 2022 and 2023. Increasing stubble height from 4 to 12 cm increased leaf blade length in 3Fpen8 (18.7–23.2 cm) and Hybrid 93 (22.7–29.7 cm). During late summer and early fall, each additional centimetre in leaf length increased the proportion of non-degraded vascular tissue and ‘girder structure’ (sclerenchyma + vascular tissue), respectively, by 0.23%–0.34% and 0.15%–0.27% in 3Fpen8 and 0.12% and 0.08%–0.11% in Hybrid 93. Leaf length affected nutritive value indirectly through non-degraded tissues; a one-unit decrease in girder structure increased Hybrid 93 digestibility by 7.5 g kg<sup>−1</sup> in late summer, when digestibility was lowest (412 g kg<sup>−1</sup>). Likewise, a one-unit reduction in vascular tissue in early fall increased crude protein by ~6 g kg<sup>−1</sup> and reduced acid detergent fibre by ~9 g kg<sup>−1</sup> in both grasses. These findings suggest that greater defoliation intensity between late summer and early fall may minimise observed increases in non-degradable tissues in bahiagrass.</p>\u0000 </div>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"80 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145686334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fermentation Parameters and In Vitro Degradability of Diets Containing Cratylia argentea Hay as a Substitute for Tifton-85 Hay 用青豆干草替代蒂夫顿-85干草的发酵参数和体外降解率
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2025-11-25 DOI: 10.1111/gfs.70024
Elaine Cristina Teixeira, Adibe Luiz Abdalla, Gustavo Henrique Silva Camargos, Alan Figueiredo de Oliveira, Fernando Antônio de Souza, Simón Pérez Márquez, Walter José Rodrigues Matrangolo, Hemilly Cristina Menezes de Sá, Luciano Soares de Lima, Ângela Maria Quintão Lana
{"title":"Fermentation Parameters and In Vitro Degradability of Diets Containing Cratylia argentea Hay as a Substitute for Tifton-85 Hay","authors":"Elaine Cristina Teixeira,&nbsp;Adibe Luiz Abdalla,&nbsp;Gustavo Henrique Silva Camargos,&nbsp;Alan Figueiredo de Oliveira,&nbsp;Fernando Antônio de Souza,&nbsp;Simón Pérez Márquez,&nbsp;Walter José Rodrigues Matrangolo,&nbsp;Hemilly Cristina Menezes de Sá,&nbsp;Luciano Soares de Lima,&nbsp;Ângela Maria Quintão Lana","doi":"10.1111/gfs.70024","DOIUrl":"https://doi.org/10.1111/gfs.70024","url":null,"abstract":"<div>\u0000 \u0000 <p><i>Cratylia argentea</i> has potential for use in ruminant feed; however, the presence of condensed tannins (CT) can interfere with rumen fermentation dynamics. This study aimed to evaluate the fermentation parameters and in vitro degradability of diets containing <i>C. argentea</i> hay as a substitute for Tifton-85 hay. The experiment was conducted in a randomised block design with a 3 × 4 factorial arrangement, using incubation times of 24, 48, and 96 h, and varying the inclusion of <i>C. argentea</i> hay at 0%, 20%, 40%, or 100% concentration, with three replicates per treatment. The production of CH<sub>4</sub> [mL/true organic matter (TOM)], gas [mL/dry matter (DM)], CH<sub>4</sub> mL/g DM, the in vitro DM digestibility (IVDMD), organic matter (IVOMD), TOM (TOMD), the partition factor (PF), which quantifies the fraction of total organic matter available for microbial fermentation, pH, the ammonia nitrogen concentrations (NH<sub>3</sub>-N), short-chain fatty acids (SCFA), isoacids and the acetate to propionate ratio were evaluated. Substitution levels did not significantly influence (<i>p</i> &gt; 0.05) CH<sub>4</sub> production, gas, PF, pH, NH<sub>3</sub>-N, SCFA, or isoacids. CH<sub>4</sub> mL/g DM showed quadratic behaviour (<i>p</i> &lt; 0.05), whereas digestibility coefficients showed a linear reduction at 96 h of incubation, probably due to fibre and CT concentrations in legume hay. However, these coefficients at the 40% inclusion level were similar to the treatment without legume hay at 96 h of incubation. Therefore, the fermentation and in vitro degradability parameters suggest that <i>C. argentea</i> hay can replace Tifton-85 hay by up to 40% in ruminant feed with the potential to reduce enteric CH<sub>4</sub> production.</p>\u0000 </div>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"80 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Grass Productivity Quantified Through Radiation Use Efficiency: A Review 利用辐射利用效率量化草地生产力研究进展
IF 2.9 3区 农林科学
Grass and Forage Science Pub Date : 2025-11-25 DOI: 10.1111/gfs.70022
James R. Kiniry, Merilynn Schantz, M. N. Meki
{"title":"Grass Productivity Quantified Through Radiation Use Efficiency: A Review","authors":"James R. Kiniry,&nbsp;Merilynn Schantz,&nbsp;M. N. Meki","doi":"10.1111/gfs.70022","DOIUrl":"https://doi.org/10.1111/gfs.70022","url":null,"abstract":"<div>\u0000 \u0000 <p>Grasses are a major portion of plant communities, both in natural conditions and in agricultural settings. Realistic and useful means of expressing their productivity are of great value. While leaf carbon exchange, growth curves, and biomass productivity are useful, in this paper we describe a different and useful approach: radiation use efficiency (RUE) or the amount of biomass produced per unit solar radiation intercepted by the leaf canopy.</p>\u0000 </div>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":"80 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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