Estimating leaf area of warm‐season perennial legumes

Homem, Bruno Grossi Costa; Ferreira, Igor Machado; Gionbelli, Mateus Pies; Bernardes, Thiago Fernandes; Casagrande, Daniel Rume; Lara, Márcio André Stefanelli

doi:10.1111/gfs.12290

Cited by 5 publications

(6 citation statements)

References 10 publications

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“…For forage peanut, the following characteristics were measured: leaf elongation rate (Homem et al., ), leaf appearance rate and stolon elongation rate. The structural characteristics included the leaf area (Homem et al., ), length of petiole (petiole + rachis), number of green leaves per stolon, length of the internode and final length of stolons (Bircham & Hodgson, ). In all seasons, tiller density and stolon density were estimated by counting the number of tillers and stolons within two frames of 0.15 m 2 and 0.5 m 2 respectively.…”

Section: Methodsmentioning

confidence: 99%

Optimal defoliation management of brachiaria grass–forage peanut for balanced pasture establishment

Tamele

Sá

Bernardes

et al. 2017

Grass and Forage Science

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A well‐established canopy is crucial for a stable mixed grass–legume forage pasture. The aim of this study was to assess a defoliation intensity that can ensure the establishment of mixed pasture of brachiaria grass (Brachiaria brizantha) intercropped with forage peanut (Arachis pintoi). The treatments comprised four canopy heights: 10, 20, 30 and 40 cm, maintained throughout the first 3 years of pasture establishment. Canopy structure, morphogenetic and structural characteristics were measured. A block design was used with four replicates, and seasons of the year were considered using repeated measurements over time. Light interception during the experimental period was 86.3%, 95.9%, 97.6%, and 99.1% for 10, 20, 30 and 40 cm of defoliation respectively (p < .001). Competition for light in taller canopies (at 30 and 40 cm) caused etiolation of forage peanut (greater internode, petiolate and stolon lengths). This response promoted its upward growth, leading to a lower stolon density compared with 10 and 20 cm. The treatment at 10 cm displayed a predominance of forage peanut (up to 0.614), potentially compromising community stability. Overall, the 20 cm canopy height showed a desired botanical composition (from 0.20 to 0.45 of legume in forage mass) and thus was considered an ideal defoliation intensity for establishment of mixed canopies of brachiaria grass and forage peanut.

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Section: Methodsmentioning

confidence: 99%

Optimal defoliation management of brachiaria grass–forage peanut for balanced pasture establishment

Tamele

Sá

Bernardes

et al. 2017

Grass and Forage Science

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“…The use of the two variables can also be applied to obtain the leaf area in other plants with foraging aptitude (Arachis pintoi, Stylosanthes spp., Calopogonium mucunoides, Neonotonia wightii, Megathyrsus maximus cv. BRS Zuri), generating high precision estimates, as it was observed by Homem et al (2017), andFernandes et al (2020).…”

Section: Discussionmentioning

confidence: 72%

Effect of using hydrogel polymers on morphometric, forage production, and nutritional characteristics of cactus pear

Pablo Ramon Costa,

Emerson Moreira de Aguiar,

Chaves Gurgel

et al. 2024

J PROF ASSOC CACTUS

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The use of cactus pear has shown poor performance in some areas of semi-arid climate regions, as the species needs a wide gradient between temperatures during the day and night to develop, which does not occur in such zones. To lessen this negative occurrence, moisture availability provides better performance for the species, such as using hydrogel instead of irrigation. The objective of this study was to evaluate the effect of using hydrogel polymers on the production of cactus pear (Opuntia stricta cv. Mexican Elephant Ear). Three treatments with six replications were used, totalling 18 experimental units. The treatments were, (1) Conventional fertilization using fertilizer in granulated format; (2) Foliar fertilization with polymer using a dilution dose of 6 grams of polymer L-1 of water associated with the fertilizer in liquid form through the foliar route; (3) Foliar fertilization without polymer using only foliar fertilization in the same formulation as the treatment with polymer. There was no effect of fertilization strategy on plant height, cladode length, cladode width, cladode thickness, cladode area, and biomass. There was an effect of the fertilization strategy on dry matter, in which higher estimates were measured for conventional fertilization and foliar fertilization without polymer. On the other hand, foliar fertilization with polymer promoted increases of 13% in mineral matter and 42% in crude protein in relation to conventional fertilization. The fertilization strategy did not change the other chemical attributes of cactus pear. The use of the hydrogel did not influence the morphometric development of the Mexican Elephant Ear cultivar but promoted increments in the chemical composition.

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“…Leaf area was estimated using the model described by Homem et al . (2017). Structural characteristics included leaf area (Homem et al .…”

Section: Methodsmentioning

confidence: 99%

“…Leaf area was estimated using the model described by Homem et al (2017). Structural characteristics included leaf area (Homem et al 2017), petiole length (petiole + rachis), and internode length (Bircham and Hodgson 1984). Twice in each season (Fig.…”

Section: Forage Peanut Structural Characteristicsmentioning

confidence: 99%

Light competition is the key factor determining spatio-temporal variability in legume proportion within Marandu palisadegrass–forage peanut mixed pastures

Spasiani

Homem

Lima

et al. 2023

Crop & Pasture Science

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Context Understanding ecology in grass–legume pastures can help support strategies aimed at maintaining canopy stability in terms of botanical composition. Aims This 2-year study evaluated spatial variability, focusing on plant structural characteristics in a Marandu palisadegrass [Urochloa brizantha (Hochst. Ex A. Rich.) R.D. Webster cv. Marandu]–forage peanut (Arachis pintoi Krapov. and W.C. Greg. cv. BRS Mandobi) mixed canopy under grazing in continuous stocking management. Methods The pasture was managed with canopy height of 20–25 cm. The experimental area had a permanent sample grid containing 50 pre-established and georeferenced plots. Principal component analysis was performed, and spatial dependence structure of the first principal component and structural variables were separately characterised by geostatistical analysis. Key results There was spatial dependence of the structural characteristics, with marked spatial heterogeneity in the distribution of all variables. Taller grass canopies caused competition for light between species, reducing legume contribution and inducing more erect forage peanut growth habit. Conversely, in areas with lower grass canopy height, forage peanut botanical composition increased to up to 70%, as it propagated more effectively by stoloniferous propagation. Conclusions The canopy structure spatial variability of a Marandu palisadegrass–forage peanut mixed pasture determines the overall average pasture grass/legume proportion. In regions with taller canopies, Marandu palisadegrass was favoured, while in areas with shorter canopy, forage peanut proportion was promoted. Satisfactory legume proportions can be reached in the canopy despite areas with reduced legume contribution. Implications Our findings using geostatistical techniques facilitate the development of useful and innovative tools allowing better comprehension for the management of mixed pastures.

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Estimating leaf area of warm‐season perennial legumes

Cited by 5 publications

References 10 publications

Optimal defoliation management of brachiaria grass–forage peanut for balanced pasture establishment

Optimal defoliation management of brachiaria grass–forage peanut for balanced pasture establishment

Effect of using hydrogel polymers on morphometric, forage production, and nutritional characteristics of cactus pear

Light competition is the key factor determining spatio-temporal variability in legume proportion within Marandu palisadegrass–forage peanut mixed pastures

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