Producción y cambios morfológicos de Pennisetum ciliare cv. H-17 en función de la edad de rebrote y altura de pradera

Abstract

Se evaluó la producción de materia seca (MS) y composición morfológica en función de la edad de rebrote (ER; cuatro, seis y ocho semanas) y altura de pradera (AP) en Pennisetum ciliare cv. H-17, durante época de lluvias (ELL) y seca (ES). Las variables fueron MS total (MSTT), hoja (MSh), tallo (MSt), material muerto (MSmm) y AP. Se utilizó un diseño completamente al azar con cuatro repeticiones y análisis de regresión lineal. Durante ELL, la MSTT fue similar (p > 0.05) entre ER (8342 kg ha-1) y disminuyó 90% en la ES. Durante ELL, se presentó mayor (p < 0.05) MSh a cuatro semanas, mientras que a ocho se presentó mayor MSt y MSmm. La MSt y MSmm se manifestaron cuando la AP fue de 34 cm y 47 cm, respectivamente. La ER y AP tuvieron efecto significativo en el rendimiento y comportamiento estructural de MS en Pennisetum ciliare cv. H-17.

Forage yield and quality of buffel ‘H‐17’ and Urochloa hybrids at different regrowth ages under semi‐arid conditions

“…Victoria–Monterrey highway, municipality of Güémez, Tamaulipas; 23°56′26.5″N, 99°05′59.9″W, at 193 masl (INEGI, ). The climate is classified as BS1 (h’)hw (García, ); where there are two well‐defined periods, the maximum (May–October) and minimum (November–April) rainfall (Garay‐Martínez et al, ; Gómez et al, ). The soil is 66% clay with no salinity problems (RAS = 0.19), alkaline pH (8.3), with 4.27% and 0.25% content of organic matter and nitrogen, respectively.…”

“…This decreased the paddock coefficient from 12 to 4 ha/AU (Hanselka, ) while the nutritional value of the forage was increased with crude protein (CP) contents from 7% to 13% (Saini, Jain, & Joshi, ), and drought tolerance was improved. Under rainfed conditions, the annual dry matter (DM) yields reached up to 9 t/ha (Garay‐Martínez et al, , ), supporting an animal load of 1.8 AU ha/year.…”

“…Furthermore, in semi‐arid places, rainfall is relatively abundant in summer and scarce during the rest of the year; this has a direct relationship with forage production, which is seasonal in the months with maximum rainfall (Garay‐Martínez et al, ; Gómez et al, ). In this sense, the variation in the weather conditions throughout the year (Lara, Oviedo, & Betancur, ) and management of the grassland will determine yield and morphological composition, which in turn will define the nutritional content (CP and carbohydrates) and digestibility of the forage (Zheng et al, ).…”

Growth analysis of kikuyo grass Cenchrus clandestinus (Hochst. ex Chiov.) Morrone fertilized with different levels of nitrogen

“…El AFE disminuye al incrementar la edad de rebrote y se relaciona con la dureza y grosor de las hojas (Garay et al, 2019). En este estudio AFE mantuvo un comportamiento similar entre tratamientos, pero los valores más altos se observaron con 150 kg.…”

Technological options for establishing pastures and increasing yield and nutrient value forage

“…The height of the meadow is a practical way of knowing when the best time is to take advantage of the forage resource, as it influences the leaf area index which in turn will determine the leaf senescence of the lower stratum (Silva et al, 2016). In this regard, a study was carried out (Garay et al, 2019) and it was concluded that in Buffel grass forage production, environmental factors and regrowth age had a significant effect on the growth rate, which was reflected in the dynamics of forage yield and accumulation and the structural behavior of dry matter in Pennisetum ciliare cv. H-17 (Figure 8.1).…”