Grass and Forage Science最新文献

{"title":"Nitrogen fertilization value of compost and dried dung in soils with contrasting synthetic nitrogen fertilization histories","authors":"Adam D. Langworthy,&nbsp;Ross Corkrey,&nbsp;Richard P. Rawnsley,&nbsp;Pieter J. M. Raedts,&nbsp;James L. Hills","doi":"10.1111/gfs.12593","DOIUrl":"10.1111/gfs.12593","url":null,"abstract":"<p>If the production of forage for dairy cattle is to become less reliant on synthetic nitrogen (N) fertilizers, there is need to better understand and account for the N contributed by on-farm and imported organic amendments. A 254-day aerobic soil incubation study (typical length of a growing season in many temperate dairying regions) quantified the inorganic (mineral) N supply from a commercial compost and dried bovine dung (i.e., on-farm effluent solids). Amendments were incubated in soils with contrasting synthetic N fertilization histories (i.e., 70–100 vs. 350–400 kg N/ha per year) to evaluate if higher synthetic N fertilization histories would reduce the lag time that often exists between organic amendment application and significant release of inorganic N for plant uptake. This proposition was based on previous research, which showed greater soil inorganic N availability accelerating organic amendment decomposition. Our experiment did find that the release of inorganic N from evaluated organic amendments was greater in soils with higher synthetic N fertilization histories, but that this effect was not apparent until after the first 6-months of this 9-month experiment. Despite this finding, soils with contrasting synthetic N fertilization histories were not found to differ in their initial inorganic N content, nor microbial activity or other physiochemical properties known to affect N mineralization. Our study highlighted the long-term vision needed when transitioning from synthetic N fertilizers to organic amendments, with most of the N present in the compost and dried dung remaining unavailable for forage production (i.e., remained bound in organic carbon-based molecules).</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gfs.12593","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48201205","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}

{"title":"Farming with forages can reconnect crop and livestock operations to enhance circularity and foster ecosystem services","authors":"Alan J. Franzluebbers,&nbsp;Guillaume Martin","doi":"10.1111/gfs.12592","DOIUrl":"10.1111/gfs.12592","url":null,"abstract":"<p>Agriculture has undergone dramatic technological and cultural changes over the past century. Many would argue that the changes have been unquestionably positive with huge gains in productivity, reduced labour requirements, and alleviation of food insecurity for most people. However, the adoption of increasingly specialized and separated crop and livestock enterprises has also had widespread negative consequences resulting in (a) decline in biodiversity, (b) degradation of groundwater and surface waters with agrochemical pollutants, (c) poor soil health with monoculture crop production and frequent soil disturbance, (d) intensive greenhouse gas emissions from both specialized cropping systems relying on external inputs and concentrated animal feeding operations that accumulate wastes, and (e) general lack of ecological integrity among components of these specialized systems. Diversified agricultural systems using annual and perennial forages offer opportunities to elevate ecological synergies when crop and livestock operations are integrated. Integrated crop-livestock systems can internalize nutrient cycling, provide cultural control of weeds, insects and diseases, and share resources in a circular-based agroecosystem. Cover crops could be transitioned into nutritious annual forages for livestock grazing on currently specialized crop production farms with appropriate local incentives. Perennial forages in ley farming or in pasture-crop rotations have historical relevance and are a proven practice for conserving nutrients, improving soil health and enhancing biodiversity. Redesigning contemporary agriculture with mixed-use farming techniques could greatly reduce soil erosion, improve water quality, and invigorate soil health. We suggest that incorporating different types of forages across a diverse landscape can enhance agricultural sustainability and ecological integrity.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gfs.12592","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45429578","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}

{"title":"The contribution of perennial ryegrass (Lolium perenne L.) breeding to whole pasture productivity under dairy cattle grazing in New Zealand. 2. Rates of gain in production traits and economic value","authors":"David F. Chapman,&nbsp;Cameron I. Ludemann,&nbsp;Cathal M. Wims,&nbsp;Barbara Kuhn-Sherlock","doi":"10.1111/gfs.12589","DOIUrl":"10.1111/gfs.12589","url":null,"abstract":"<p>Perennial ryegrass (<i>Lolium perenne</i>) plant breeding has delivered several high performing and broadly adapted cultivar-endophyte (<i>Epichloë</i>) combinations for the New Zealand pasture-based livestock industries. However, the trends in key traits and the potential economic value being added to farm systems have not previously been addressed systematically. Rates of gain in yield, nutritive value, phenological and morphological traits, and the economic value of those traits, were estimated among and within ryegrass functional groups (heading date, ploidy) traded commercially between 1973 and 2012. Whole pasture dry matter yield improvements of c. 80 and 60 kg DM/ha per year were identified in in late-season heading diploids and tetraploids respectively. Trends in metabolisable energy were negative within functional groups, but positive when all cultivar-endophyte combinations were included in the analysis due to the addition of tetraploids and late-season heading diploids from the mid-1990s. The estimated trend in overall economic value (all cultivar-endophyte combinations included) was $7/ha per year based on DM yield only, about half the rate of gain previously estimated using small-plot merit testing data. The trend increased to $15/ha per year when ME was included due to the emergence of commercial tetraploids from the early 2000s onwards. Estimated economic gains were high within late-season heading diploids and tetraploids but not mid-season diploids. These trends suggest that, if high performing cultivar-endophyte combinations had been adopted in New Zealand dairy systems, then pasture utilization should have increased by ~1 t DM/ha above the current industry average. Reasons for this apparent discrepancy are discussed.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44913304","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}

{"title":"The contribution of perennial ryegrass (Lolium perenne L.) breeding to whole pasture productivity under dairy cattle grazing in New Zealand. 1. Variation in yield, nutritive value and persistence-related traits","authors":"David F. Chapman,&nbsp;Cathal M. Wims,&nbsp;Cameron I. Ludemann,&nbsp;Barbara Kuhn-Sherlock","doi":"10.1111/gfs.12590","DOIUrl":"10.1111/gfs.12590","url":null,"abstract":"<p>Perennial ryegrass (PRG, <i>Lolium perenne</i> L.) breeding effort in New Zealand (NZ) has increased since c. 1990, resulting in greater functional trait diversity (e.g. heading date, ploidy, and associated <i>Epichloë</i> endophyte strain) in commercial products. This study quantified the variation, associations and interactions in dry matter (DM) yield, nutritive value and persistence-related traits among commercial cultivar-endophyte combinations released between 1973 and 2012, as a basis for assessing gains in value being delivered to the pasture-based livestock industries. Twenty-four or 28 combinations were compared over 3 years in two trials in each of two regions: Waikato in northern NZ (dryland), and Canterbury in central eastern South Island (irrigated). Cultivar-endophyte combinations were sown in mixtures with white clover, and pastures were intensively grazed 8–11 times per year by dairy cows. Principal Component Analysis identified 4 distinct clusters for the DM yield variables and for metabolisable energy (ME) content in each of the four trials. A broadly-adapted group of three late-season flowering, AR37-infected diploids with NZ and Spanish breeding backgrounds dominated the highest-yielding clusters. Tetraploids dominated the high ME content clusters. Interactions with region were observed throughout the data set: the strongest of these was driven by endophyte strain effects in Waikato. High-yielding cultivar-endophyte combinations in these trials were also generally high-yielding in the standard cultivar merit testing system operated in New Zealand, as interpreted via the DairyNZ Forage Value Index. However, alignment was poorer for medium- and lower-yielding cultivar-endophyte combinations. Several implications for forage evaluation methods and end-user industries are identified.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49418421","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}

{"title":"High Ca and P homeostasis ensure stable forage Ca:P following historical nitrogen inputs in a temperate steppe","authors":"Nian-Qian Kang,&nbsp;Yan-Yu Hu,&nbsp;Yu-Heng Guo,&nbsp;Zhi-Wei Zhang,&nbsp;Jiang-Xia Yin,&nbsp;Xiao-Tao Lü","doi":"10.1111/gfs.12591","DOIUrl":"10.1111/gfs.12591","url":null,"abstract":"<p>Calcium (Ca) and phosphorus (P) are essential nutrients for plant growth, with consequences on ruminant diet and health. Their balance in forage, as indicated by Ca:P ratio, is important for the absorption and utilisation of both elements by livestock. While nitrogen (N) deposition has been globally observed, it is declining or is projected to decline due to controls on N emissions in many countries. It is an open question whether N inputs would have legacy effects on forage Ca and P nutrition in grasslands. Here, we examine the changes of Ca and P concentrations and Ca:P ratio in plants and soils in a temperate steppe for three continuous years (2016 ~ 2018) following historically 6 years N inputs (2008 ~ 2013) with a gradient ranging from 0 to 20 g N m⁻² year⁻¹. Soil extractable Ca concentrations significantly decreased with increasing N addition rates in all the 3 years, but soil available P concentrations increased and Ca:P ratio decreased only in 2016. Ca and P nutrition varied greatly amongst the four plant functional types, but they were generally conservative across the historical N addition rates, due to the high stoichiometric homeostasis. Furthermore, plant Ca and P concentrations and Ca:P ratios at the community level showed no significant variation along the N addition gradient. Our results highlighted the role of plant Ca and P homeostasis in ensuring stable Ca and P nutrition in forage following historical N inputs in temperate grasslands.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49052178","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}

{"title":"Drought stress impact on the performance of deep convolutional neural networks for weed detection in Bahiagrass","authors":"Jiayao Zhuang,&nbsp;Xiaojun Jin,&nbsp;Yong Chen,&nbsp;Wenting Meng,&nbsp;Yundi Wang,&nbsp;Jialin Yu,&nbsp;Bagavathiannan Muthukumar","doi":"10.1111/gfs.12583","DOIUrl":"10.1111/gfs.12583","url":null,"abstract":"<p>Machine vision-based weed detection relies on features such as plant colour, leaf texture, shape, and patterns. Drought stress in plants can alter leaf colour and morphological features, which may in turn affect the reliability of machine vision-based weed detection. The objective of this research was to evaluate the feasibility of using deep convolutional neural networks for the detection of Florida pusley (<i>Richardia scabra</i> L.) growing in drought stressed and unstressed bahiagrass (<i>Paspalum natatum</i> Flugge). The object detection neural networks you only look once (YOLO)v3, faster region-based convolutional network (Faster R-CNN), and variable filter net (VFNet) failed to effectively detect Florida pusley growing in drought stressed or unstressed bahiagrass, with F1 scores ≤0.54 in the testing dataset. Nevertheless, the use of the image classification neural networks AlexNet, GoogLeNet, and Visual Geometry Group-Network (VGGNet) was highly effective and achieved high (≥0.97) F1 scores and recall values (≥0.98) in detecting images containing Florida pusley growing in drought stressed or unstressed bahiagrass. Overall, these results demonstrated the effectiveness of using an image classification convolutional neural network for detecting Florida pusley in drought stressed or unstressed bahiagrass. These findings illustrate the broad applicability of these neural networks for weed detection.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44898907","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}

{"title":"Diversification increases the resilience of European grassland-based systems but is not a one-size-fits-all strategy","authors":"Bertrand Dumont,&nbsp;Antonello Franca,&nbsp;Feliu López-i-Gelats,&nbsp;Claire Mosnier,&nbsp;Caren M. Pauler","doi":"10.1111/gfs.12587","DOIUrl":"10.1111/gfs.12587","url":null,"abstract":"<p>Diversification of grassland-based systems is highly valued in agroecology, organic farming and other forms of regenerative agriculture. For lowlands, mountain and Mediterranean areas, we illustrate that diversification of grassland types, livestock species, products and farm labour allows coping with market, climatic and workforce-related risks. However, diversification is not a one-size-fits-all strategy and the type of diversification strategy should be adapted according to socio-economic, structural, technical and pedoclimatic conditions of each farm. Farmers' technical skills and ability to re-organise and monitor the system must be considered to avoid ineffectiveness of the diversified system. Moreover, it is essential to account for site-specific conditions so that the ecological processes to be optimised can provide the expected benefits. Diversification occurs on different levels, from grassland management to the entire farm activity. There may be trade-offs among these different levels impairing grassland ecosystem services. For instance, if diversification of farm activities dilutes the workforce, simplified grassland management can lead to the loss of vegetation communities of high ecological value. In contrast, case-adapted diversification benefits from local opportunities, available resources and external supports to secure the system and favour sustainable resource management. Diversification thereby preserves grassland ecosystem services and enhances farm socio-economic resilience to withstand perturbations.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gfs.12587","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45083478","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}

{"title":"Multifunctionality and diversity of livestock grazing systems for sustainable food systems throughout the world: Are there learning opportunities for Europe?","authors":"Alexandre Ickowicz,&nbsp;Bernard Hubert,&nbsp;Mélanie Blanchard,&nbsp;Vincent Blanfort,&nbsp;Jean-Daniel Cesaro,&nbsp;Arona Diaw,&nbsp;Jacques Lasseur,&nbsp;Le Thi Thanh Huyen,&nbsp;Li Li,&nbsp;Rogerio Martins Mauricio,&nbsp;Mauroni Cangussu,&nbsp;Jean-Pierre Müller,&nbsp;Mariana Quiroga Mendiola,&nbsp;Juan Quiroga Roger,&nbsp;Tomas Anibal Vera,&nbsp;Tungalag Ulambayar,&nbsp;Liz Wedderburn","doi":"10.1111/gfs.12588","DOIUrl":"10.1111/gfs.12588","url":null,"abstract":"<p>Throughout the world, livestock grazing systems (LGS) include, and provide livelihoods for, many rural populations. These LGS are represented in a wide variety of agroecological contexts and offer a huge variety of system organization. They contribute to sustainable food systems by providing multiple products including low-cost edible proteins and energy, draft power, outputs (carbon and soil nutrient regulation, landscape and biodiversity maintenance), roles (local development support in harsh environments, contribution to the circular economy) and benefits to populations (revenue, employment, and cultural assets). These multiple functions can be described through a multifunctional conceptual model specified for LGS. Applied to cases in Africa, Asia, Latin America and Europe, the framework enables the assessment of these systems in a holistic manner that includes four dimensions: production, social, environmental and local development. These dimensions and associated local indicators demonstrate the potential important contribution that LGS may deliver to sustainable food systems. Management of interactions and trade-offs between these functions may be improved using such a model in a multi-stakeholder approach. Some of the functions and balance between them might have been overlooked in the consideration of European food systems.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gfs.12588","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47479013","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}

{"title":"Phenotyping of Urochloa humidicola grass hybrids for agronomic and environmental performance in the Piedmont region of the Orinoquian savannas of Colombia","authors":"Daniel M. Villegas,&nbsp;Ashly Arévalo,&nbsp;Mauricio Sotelo,&nbsp;Jonathan Nuñez,&nbsp;Danilo Moreta,&nbsp;Idupulapati Rao,&nbsp;Manabu Ishitani,&nbsp;Guntur V. Subbarao,&nbsp;Jacobo Arango","doi":"10.1111/gfs.12582","DOIUrl":"10.1111/gfs.12582","url":null,"abstract":"<p>In the low fertility acid soils of the Orinoquian savannas of Colombia, <i>Urochloa humidicola</i> cv. Tully or Humidicola is one of the most widely planted tropical forage grasses for improving livestock productivity. Low nutritional quality of this grass limits sustainable livestock production in this region. In this study, we conducted a phenotypic evaluation under field and greenhouse conditions of one of the first hybrid populations of <i>U. humidicola</i> generated from the forage breeding program of CIAT. Our objective was to identify a set of new hybrids of <i>U. humidicola</i> that combine improved productivity and nutritional quality plus the biological nitrification inhibition (BNI) trait/ability to reduce nitrogen (N) losses via leaching and nitrous oxide (N₂O) emissions. To this end, we tested 118 hybrids (planted in pots) in the greenhouse for over 6 months and measured potential nitrification rates (NR) using soil microcosm incubation. NR values observed ranged from 0.27 to 5.75 mg N-NO₃⁻ kg soil⁻¹ day⁻¹. Later, 12 hybrids with different levels of NR were selected and field-tested in the Orinoquia region over a 4 years period (2013–2017) for dry matter production, nutrition quality (crude protein, <i>in vitro</i> digestibility and fibres content) and NR in each year. In the rainy season of 2018, two hybrids with superior agronomic performance and contrasting field level NR (Uh08/1149 and 0450) were subjected to analysis of soil-borne N₂O emissions after fertilization during 13 days. The NR values recorded were not directly correlated with the forage quality parameters evaluated, however, the two grasses with the lowest NR values were among those with the highest biomass production, crude protein content, and N uptake. The grass hybrid Uh08/1149 and the germplasm accession CIAT 16888 were found as materials with superior forage value, with production of 14.1 and 14.6 tons dry matter ha⁻¹ year⁻¹ (up to 8% higher than the cv. Tully), crude protein of 11.5 and 9.1% per cut (up to 20% higher than the cv. Tully), and N uptake of 31.6 and 25.7 kg N ha⁻¹ cut⁻¹ (up to 30% higher than the cv. Tully). Additionally, these two grasses are likely to exhibit high-BNI ability, with potential to improve N use efficiency in managed pastures.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gfs.12582","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47327763","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}

{"title":"Morphology, accumulation and survival of Desmanthus under different planting densities and harvest heights","authors":"Aurielle S. Medeiros,&nbsp;Mércia V. F. dos Santos,&nbsp;Márcio V. da Cunha,&nbsp;Alexandre C. L. de Mello,&nbsp;Djalma E. Simões Neto,&nbsp;Osniel F. de Oliveira,&nbsp;James P. Muir,&nbsp;Jose C. B. Dubeux Jr,&nbsp;André E. dos Santos","doi":"10.1111/gfs.12586","DOIUrl":"10.1111/gfs.12586","url":null,"abstract":"<p>The use of legumes is an important strategy for animal feeding, especially during the dry season. The aim was to evaluate the effect of planting densities (40,000; 15,625 and 10,000 plants ha⁻¹) and harvest heights (20 and 40 cm) on the morphology, accumulation and survival of Desmanthus (<i>Desmanthus pernambucanus</i> [L.] Thellung), cultivated in subhumid tropical region, as well as to estimate the repeatability of the evaluated characteristics and the optimal number of measurements. The treatments were randomized in blocks, with subdivided plots and four replicates. Planting densities were evaluated in the plots and the harvest heights in the subplots. Eight harvests were carried out with an interval of 84 days. Morphological and productive characteristics and survival were evaluated. Cultivation under density of 40,000 plants ha⁻¹ produced taller plants, with higher leaf area index (LAI = 0.98), light interception (LI = 49%), individual accumulations (18.8 g DM plant⁻¹) and by area (576.5 kg DM ha⁻¹ harvest⁻¹), although resulting in reduced plant stand (66%). Harvest heights do not affect accumulation and survival. It is possible to reduce the number of measurements for stem diameter, number of leaflets per leaf (<i>R</i>² = 95%), plant height, canopy diameter, LAI, LI, leaf length and width, number of leaves per branch, branch diameter and LBR (<i>R</i>² = 90%), optimizing resources for future research. Desmanthus has potential for use in protein banks, being harvested in the rainy season, conserved and supplied in addition to animals, but plant growth is minimal during the dry season under rainfed conditions.</p>","PeriodicalId":12767,"journal":{"name":"Grass and Forage Science","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43540066","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}