Morphogenetic components and accumulation in Mulato grass at different frequencies and intensities of grazing

Cruz-Hernández, Aldenamar; Hernández-Garay, Alfonso; Vaquera-Huerta, Humberto; Chay-Canul, Alfonso J.; Enríquez-Quiroz, Javier Francisco; Ramírez-Vera, S.

doi:10.22319/rmcp.v8i1.4310

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…Moreover, the growth dynamics determine the phenological behavior of the crop at different year seasons which varies depending on the environmental conditions that arise (Montes Cruz et al, 2016) so that the growth and quality of the pastures it can vary considerably according to the management to which they are subjected, with favorable or non-favorable effects according to the plant species and the edaphoclimatic conditions (del Pozo Rodríguez, 1998). This coincides with that reported by (Cruz-Hernández et al, 2017), who in a trial with B. hybrid cv Mulato at different frequency and intensity of grazing concluded that during rainy season the pasture presents greater forage accumulation of forage when harvested in rest periods of 28 days.…”

Section: Resultssupporting

confidence: 91%

Comparison of Nonlinear Models for Dry Matter Yield of Brachiaria Hybrid cv Cayman in Drought Season by Bootstrapping

Rivas¹,

Torres²,

Pino³

et al. 2021

OnLine Journal of Biological Sciences

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The dynamics of biomass accumulation at different seasons of the year is of vital importance in the production of a forage species. In this study nonlinear models (logistic and gompertz) to describe growth dynamics of plants based on dry matter yield of Brachiaria hybrid Cayman at different interval between cuts in drought season were used. Results for logistic and gompertz model showed an excellent fit to the data set of accumulated dry matter with a R 2 close to 1.0. In the dry season the best fitted model to estimate the cumulative dry matter yield was gompertz model. It is possible suggest logistic model use in drought conditions. The empirical distribution of the estimated intrinsic growth rate (K) was symmetric and leptokurtic for the logistic and gompertz model in the intervals (-0.0141; 0.2071 Kg MS ha 1 ) and -0.00086; 0.724986 Kg MS ha 1 ), respectively and the empirical distribution of the asymptotic accumulated dry matter yield (B) was asymmetric for the logistic and gompertz models in the intervals (4373; 16980 Kg MS ha 1 ) and (9840; 26654 Kg MS ha 1 ), respectively. The empirical distribution of these two parameters reflects the fact that the accumulated dry matter production of this grass is strongly related to the distribution of rainfall, especially in the tropical dry forest. The nitrogen fertilization, interval between cuts, intrinsic growth rate of B. hybrid Cayman as well as other factors affect this species development determine dry matter yield sustainability.

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Section: Resultssupporting

confidence: 91%

Comparison of Nonlinear Models for Dry Matter Yield of Brachiaria Hybrid cv Cayman in Drought Season by Bootstrapping

Rivas¹,

Torres²,

Pino³

et al. 2021

OnLine Journal of Biological Sciences

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“…Más aun, las dinámicas de crecimiento, determinan el comportamiento fenológico del cultivo en las diferentes épocas del año, el cual varía dependiendo de las condiciones ambientales que se presenten (Montes et al, 2016), por lo que el crecimiento y calidad de los pastos puede variar considerablemente de acuerdo con el manejo a que se someten, con efectos favorables o no según la especie de planta y las condiciones edafoclimáticas (Del Pozo, 1998). Esto coincide con lo reportado por Cruz et al (2017), quienes en un ensayo con pasto mulato a diferente frecuencia e intensidad de pastoreo, concluyeron que durante la época de lluvias el pasto presenta mayor acumulación de forraje al cosecharse en periodos de 28 días con pastoreos ligeros.…”

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Evaluación de modelos aplicados a la producción de materia seca de Brachiaria brizantha en el periodo lluvioso

Valbuena

2019

rcia

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En éste trabajo se compararon modelos no lineales para describir la dinámica de crecimiento de plantas con base en la producción de materia seca en Brachiaria brizantha CV. Toledo a diferentes edades de corte y bajo fertilización nitrogenada en época de lluvias, la cual permitió establecer puntos de equilibrio, estudio de la monotonía y concavidad. Los resultados mostraron que cuatro modelos están relacionados con la constante A concerniente al rendimiento máximo de materia seca. Los puntos de equilibrio se ven afectados por factores vinculados al desarrollo del cultivo. En condiciones de sequía el modelo Gompertz muestra una debilidad frente al resto, por lo que su uso estaría restringido en tales condiciones climatológicas. Los modelos Von Bertalanffy y Brody carecen de un punto de inflexión, por lo que en ensayos donde se presume la presencia de inflexiones en la producción de materia seca, su implementación no es conveniente. Se puede sugerir el uso del modelo logístico en condiciones de sequía, mientras que en períodos lluviosos, el uso de un modelo logístico o Gompertz está sujeto a la realización previa del Análisis de Covarianza. La fertilización nitrogenada, la edad de corte, la tasa intrínseca de crecimiento del pasto B. brizantha, así como los demás factores que afectan el desarrollo de ésta especie determinan la sustentabilidad en la producción de materia seca.

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“…Plant height from the ligule to the apex of the green leaves was measured in each experimental unit using a ruler. The elongation rate of plant (elongation rate; cm stem -1 d -1 ), was calculated for growing leaves, by the difference between the sum of the lengths of the final (Lf) and initial (Li), at end of two successive measurements, divided by the number of days elapsed for each grazing frequency (D) between both successive measurements with the following formula, suggested by Cruz-Hernández et al (2017): elongation rate= (Lf-Li) / D.…”

Section: Ryegrass Height and Elongation Ratementioning

confidence: 99%

FORAGE YIELD, ELONGATION RATE AND BOTANICAL COMPOSITION OF Lolium multiflorum LAMB. IN RESPONSE TO DIFFERENT GRAZING INTERVALS AND INTEN

Tilus¹,

Zinn²,

Joseph³

et al. 2022

Trop Subtrop Agroecosyst

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Background. The intensity and grazing interval are two very important factors in the management of grasslands that can affect the morphological and productive behavior of the forage species. Due to its productivity and persistence to grazing, ryegrass (Lolium multiflorum Lamb.) is the main source of pasture for backgrounding cattle during winter-spring in northwestern México. Therefore, it is important to generate knowledge of established pasture with grasses to generate information that will serve producers to improve the economic profitability of livestock activities. Objective. The objective of this study was to evaluate the influence of grazing intensity (GI) and grazing interval (GIv) on forage yield, elongation rate and botanical composition of ryegrass, under ambient conditions of this arid region. Hypothesis. It is evident to observe that GIv and GI modify the forage yield, elongation rate and botanical composition of L. multiflorum established in irrigated grassland in temperate climate zones. Methodology. The study involved 1008 crossed bull calves (Bos indicus ˣ Bos taurus) of 16 months of age. Calves were distributed in a 3 ˣ 2 factorial arrangement in an RCB design, with three repetitions. Three GIv (21, 28 and 35-d) and two GI (grazed to 4 to 6 cm vs 10 to 12 cm) were evaluated. This 105-d trial was initiated on January 16, 2019, 90 days post-planting and finished on May 01, 2019, using an intensive grazing system with stocking rate of 56 calves per ha. The main effects of grazing interval were evaluated by means of orthogonal polynomials. Results. Forage yield increased linearly (P<0.01) with increasing GIv; whereas with GIv of 28 and 35 days, yield increased with increased GI (interaction, P< 0.01). Stem contribution to yield increased linearly (P<.01) with increasing GIv. Forage lef to stem ratio decreased with increasing GIv and GI; however, at 28-d GIv, GI did not affect this ratio. Implications. The results of the present study contribute to know the productive parameters of an established L. multiflorum meadow in zones of arid climates under two intensities and three grazing intervals. Conclusions. In conclusion, both grazing intensity and grazing interval are effective management tools to modify ryegrass performance during the hot ambient conditions of the Sonoran Desert region, associated with late-spring grazing period.

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Morphogenetic components and accumulation in Mulato grass at different frequencies and intensities of grazing

Cited by 6 publications

References 9 publications

Comparison of Nonlinear Models for Dry Matter Yield of Brachiaria Hybrid cv Cayman in Drought Season by Bootstrapping

Comparison of Nonlinear Models for Dry Matter Yield of Brachiaria Hybrid cv Cayman in Drought Season by Bootstrapping

Evaluación de modelos aplicados a la producción de materia seca de Brachiaria brizantha en el periodo lluvioso

FORAGE YIELD, ELONGATION RATE AND BOTANICAL COMPOSITION OF Lolium multiflorum LAMB. IN RESPONSE TO DIFFERENT GRAZING INTERVALS AND INTEN

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