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Valor nutritivo da vegeta o herbácea de caatinga enriquecida e pastejada por ovinos e caprinos Nutritive value of herbaceous vegetation of caatinga enriched and grazed by sheep and goats
Luiza Daiana Araújo da Silva Formiga,José Morais Pereira Filho,Nadjanara Souza Oliveira,Aderbal Marcos de Azevedo Silva
Revista Brasileira de Saúde e Produ??o Animal , 2011,
Abstract: Objetivou-se avaliar a composi o química, digestibilidade e o consumo da vegeta o herbácea de uma Caatinga raleada e enriquecida com capim buffel (Cenchrus ciliaris L.) pastejada por ovinos e caprinos. Foram utilizados 12 caprinos F1 (B er x SRD) e 12 ovinos Santa Inês com peso vivo médio de 15kg. Os dados da vegeta o foram analisados através de delineamento inteiramente casualizado com observa es repetidas no tempo, e os de consumo dos animais foram em delineamento inteiramente casualizado com dois tratamentos e 12 repeti es. O pastejo n o afetou a composi o química e a digestibilidade in vitro da vegeta o herbácea. Em avalia o do dia 01 de junho os três componentes florísticos apresentaram os menores percentuais de matéria seca e os maiores de teores de proteína bruta e digestibilidade in vitro da matéria seca. Entretanto ocorreu o inverso em 01 de agosto, que diferiu até mesmo do observado em 01 de setembro e 01 de outubro. Os caprinos apresentaram consumo de 437,47g de matéria seca, superior aos 331,78g de matéria seca ingerida pelos ovinos. Embora a matéria seca disponível da Caatinga raleada e enriquecida com capim buffel apresentasse baixos teores de proteína bruta e de digestibilidade in vitro da matéria seca, os caprinos conseguiram selecionar uma dieta capaz de permitir um consumo superior a 2% do peso vivo. The objective of this word was to evaluate the chemical composition, digestibility and intake of herbaceous vegetation in a thinned and enriched with buffel grass (Cenchrus ciliaris L.) Caatinga grazed by sheeps and goats. 12 goats F1 (Boer x SRD) and 12 Santa Inês sheeps with live weight of 15,00kg were used. The vegetation data were analyzed using a completely randomized design with repeated observations over time, and the animals intake of was also a completely randomized design with two treatments and twelve repetitions. Grazing did not affect the chemical composition and in vitro digestibility of herbaceous vegetation. On the evaluation on june 1st the three floristic components had the lowest percentage of dry matter and the higherest percentages of crude protein and in vitro digestibility of dry matter, while the opposite occurred in august 1st, differing even from that observed in september 1st and october 1st. The goats intake was 437.47 of dry matter, compared to 331.78g of dry matter intake by sheep. Although the available dry matter from thinned and enriched caatinga with buffel grass presented low levels of crude protein and in vitro digestibility of dry matter, the goats were able to select a diet that allowed intake
Growth Response of Buffel Grass (Cenchrus ciliaris) to Phosphorus and Mycorrhizal Inoculation
Irshad Ahmad Khan,Shahbaz Ahmad,Sarwat N. Mirza,Moazzam Nizami
Agriculturae Conspectus Scientificus (ACS) , 2007,
Abstract: Arbuscular-mycorrhizal symbiosis confers numerous benefits to host plants including improved tolerance to abiotic and biotic stresses. Although the majority of grasses form an arbuscular mycorrhizal symbiosis, little is known of the mycorrhization of Buffel grass (Cenchrus ciliaris). A pot study was conducted in sterilized soil to determine the effect of mycorrhizal inoculation and phosphorus amendment on the biomass production in C. ciliaris. Mycorrhizal fungi used were Gigaspora rosea, Glomus intraradices and Glomus etunicatum. Inoculation with Gigaspora rosea alone, and combined incoculation with Glomus intraradices + Gigaspora rosea and Glomus intraradices + Glomus etunicatum signifi cantly (P<0.05) increased dry biomass in unamended and 25 kg P2O5 ha-1 treatments. Combined inoculation with Glomus intraradices + Gigaspora rosea and Glomus intraradices + Glomus etunicatum showed pronounced (P<0.05) eff ect on dry biomass compared to inoculation with Gigaspora rosea alone in unamended and 25 kg P2O5 ha-1 treatments. Combined inoculation with Glomus intraradices + Glomus etunicatum resulted in signifi cantly (P<0.05) higher dry biomass campared to the combined inoculation with Glomus intraradices + Gigaspora rosea and inoculation with Gigaspora rosea alone in unamended and 25 kg P2O5 ha-1 treatments. Th e results clearly show that inoculation of C. ciliaris plants with mycorrhizal fungi Gigaspora rosea, Glomus intraradices and Glomus etunicatum is highly benefi cial for the growth and biomass production in the absence or presence of P2O5 under sterile soil conditions. Inoculation of C. ciliaris plants with these mycorrizal fungi may help in forage production in marginal and shallow soils of the rangelands of Pakistan.
Clipping Effects on the Growth Variation, Water Use Efficiency and Photosynthetic Activity in Buffel Grass (Cenchrus ciliaris L.) Poaceae  [PDF]
M. Issoufou,M. Zaman Allah,A. Ferchichi,E. Ferjani
Asian Journal of Plant Sciences , 2008,
Abstract: Buffel grass (Cenchrus ciliaris) growth, biomass allocation to root and shoot, water use efficiency and photosynthetic activity were measured in response to two defoliation heights (5 and 3 cm). Results showed that plants clipped at 5 cm showed a significant increase of diameter and water use efficiency as well as higher leaf water potential with a subsequent increase of stomatal conductance and photosynthetic activity. On the other hand, plants clipped at 3 cm presented an increase in photosynthetic activity parameters but a significant decrease in all growth parameters and water use efficiency.
Autopolinización en la producción de semilla de pasto buffel (Cenchrus ciliaris L.)
Conde-Lozano,Elizabeth; Saldívar-Fitzmaurice,Abelardo José; Briones-Encinia,Florencio; Martínez-González,Juan Carlos;
Agronomía Mesoamericana , 2011,
Abstract: self-pollination in the production of seed of buffel grass (cenchrus ciliaris l.). the objective of this study was to compare different forms of pollination on the characteristics of seed of four varieties of buffel grass. the study was carried out in the greenhouse and in the field of uam agronomia y ciencias in the municipa ity of victoria, tamaulipas. we used four varieties of buffel grass (comun, nueces, t-1754 and formidable) which were subjected to two types of pollination (free and self-pollination). the design used was a completely randomized blocks design. day at flowering of male and female organs was measured. in addition, pollen was classified (fertile, intermediate and infertile), and the effects of self-pollination and free pollination free on the characteristics of seed were recorded. no effects were observed on days at flowering of female organs (p = 0.54), but the male organs were affected (p = 0.03), so that formidable variety plants required 2.3 days to mature. the number of fertile, intermediate and infertile pollen grains was not affected by pollination or variety. all seed components were affected (p < 0.01) by the type of pollination, and the plants subjected to self-pollinating showed the best features. pollination affected the characteristics of the seeds.
Colonización micorrízica arbuscular y crecimiento de genotipos de pasto buffel (Cenchrus ciliaris)  [cached]
Arturo Du00EDaz Franco,Idalia Garza Cano
Revista fitotecnia mexicana , 2006,
Abstract: Para conocer la efectividad de la simbiosis por hongos micorrízicos arbusculares (HMA) en el crecimiento de pasto buffel (Cenchrus ciliaris L.), se hizo un estudio en invernadero en el que las líneas PI- 409443 , PI-409275 , y las variedades Formidable , Zaragoza 115 y Común (testigo), fueron inoculadas o no con el HMA Glomus intraradices. Se realizaron dos muestreos, el 25 de julio y el 8 de noviembre. En el primer muestreo, el índice de clorofila y las biomasas fresca y seca de los genotipos no mostraron efectos significativos de micorrización. En el muestreo final, la simbiosis causó incrementos significativos en índice de clorofila, contenido de proteína foliar, y biomasa seca y radical. La colonización micorrízica final promedió 42 %. Los genotipos de buffel PI-409443 y Formidable registraron los valores más altos en biomasa seca e índice de clorofila en el primero y en el último muestreo, y de biomasa radical en el final. G. intraradices fue capaz de incrementar significativamente el contenido de proteína foliar en PI-409443 y Formidable y Común . El porcentaje de colonización micorrízica radical se correlacionó con el índice de clorofila (r2=0.82) y con el contenido de proteína (r2=0.92). Los resultados indicaron que la micorrización promovió mayores valores en producción de biomasa, índice de clorofila y contenido de proteína, en tres de los cinco genotipos del pasto buffel, en el segundo muestreo.
Recent invasion of buffel grass (Cenchrus ciliaris) of a natural protected area from the southern Sonoran Desert
De la Barrera, Erick;
Revista mexicana de biodiversidad , 2008,
Abstract: the centro ecológico de sonora is a natural protected area where the natural vegetation remained undisturbed at least until 1997. since then, cenchrus ciliaris has become a prominent element of the vegetation because of disturbance. climate, soil properties, population structure and biological activity for c. ciliaris were studied to gain understanding of the ecological mechanisms that favored the invasion by this exotic grass. mean air temperature and annual rainfall were 24.8°c and 302 mm. the soil was a loamy-sand that was poor in most nutrients, but particularly rich in phosphorus. pennisetum ciliare was the most abundant species at the centro ecológico, representing over one third of total plant ground cover. basal area for individual plants ranged from less than 1 cm2 to almost 1 m2. living leaves per plant increased with precipitation, peaking at 199 leaves in march 2005, and no living leaves were found after 103 days without rain. the environmental conditions prevalent at centro ecológico are very favorable for c. ciliaris, whose establishment was apparently triggered by a major disturbance caused by the development of housing projects.
Utiliza??o de aduba??o organica em pastagem de capim-buffel (Cenchrus ciliaris CV. Molopo)
Edvan,R.L.; Santos,E.M.; Vasconcelos,W.A.; Souto Filho,L.T.; Borburema,J.B.; Medeiros,G.R.; Andrade,A.P.;
Archivos de Zootecnia , 2010, DOI: 10.4321/S0004-05922010000400003
Abstract: the objective of this experiment was to compare with other fertilizer sources the effect of bovine digestive content on structural, morpho-genetic and production characteristics of buffel grass. the study was carried out at esta??o experimental do instituto nacional do semi-árido, located in campina grande, pb, brazil. a previously implanted pasture of buffel grass, cultivar molopo was used. experimental area was split in 24 (4 m2) experimental unities and a completely randomized block in a split plot scheme, split at time. treatments were 5 and 10 ton of dry matter per ha of digestive content or bovine manure. for mineral fertilizer treatment 40:10:40 formule was used applying 200 kg of mix per ha. there was not interaction between fertilization and time cut (p>0.10). fertilization influenced (p<0.10) fresh matter production; mineral fertilizer treatment presented higher production. for dry matter production difference was verified (p<0.10); cattle manure and digestive content in higher dose resulted in greater productions. higher (p<0.10) number of tillers was verified for digestive content in higher dose. there was not effect (p>0.10) of fertilization for leaf/steam ratio, leaf appearence rate and number of green leafes per tiller, whereas effect (p<0.10) for phyllocron was obseved, mainly for higher cattle manure dose. with relation to time of cutting there was difference (p<0.10) for fresh and dry matter production, leaf/steam ratio, leaves appearence rate, number of green leaves per tiller, phyllocron and height of cut. the digestive content promote increase in buffel grass production, presenting a viable alternative to be used as organic fertilizer.
AUTOPOLINIZACIóN EN LA PRODUCCIóN DE SEMILLA DE PASTO BUFFEL (Cenchrus ciliaris L.)  [cached]
Elizabeth Conde-Lozano,Abelardo José Saldívar-Fitzmaurice,Florencio Briones-Encinia,Juan Carlos Martínez-González
Agronomía Mesoamericana , 2011,
Abstract: El objetivo de este estudio fue determinar el efecto de la polinización libre y la autopolinización en el pasto Buffel. El estudio se realizó en el invernadero y en el campo de la Unidad Académica Multidisciplinaria Agronomía y Ciencias (UAMAC) en el Municipio de Victoria, Tamaulipas. Se utilizaron cuatro variedades de pasto Buffel (Común, Nueces, T-1754 y Formidable) las cuales fueron sometidas a dos tipos de polinización (libre y auto). Se utilizó un dise o en bloques completos al azar. Se midieron los días a floración de los órganos masculinos y femeninos. Se clasificó el polen (fértil, intermedio e infértil) y los efectos de la autopolinización y polinización libre sobre las características de las semillas. No se observaron efectos sobre los días a floración de los órganos femeninos (P = 0,54), pero sí en los órganos masculinos (P < 0,03), donde las plantas de la variedad Formidable tardaron 2,3 días en madurar. El número de granos de polen fértil, intermedio e infértil no fueron afectados por la polinización ni por la variedad. En cuanto a los componentes de la semilla, todos fueron afectados (P < 0,01) por el tipo de polinización, las plantas sometidas a autopolinización mostraron las mejores características. La polinización afectó las características de la semilla.
Recent invasion of buffel grass (Cenchrus ciliaris) of a natural protected area from the southern Sonoran Desert Invasión reciente de zacate buffel (Cenchrus ciliaris) en un área natural protegida del desierto sonorense  [cached]
Erick De la Barrera
Revista mexicana de biodiversidad , 2008,
Abstract: The Centro Ecológico de Sonora is a natural protected area where the natural vegetation remained undisturbed at least until 1997. Since then, Cenchrus ciliaris has become a prominent element of the vegetation because of disturbance. Climate, soil properties, population structure and biological activity for C. ciliaris were studied to gain understanding of the ecological mechanisms that favored the invasion by this exotic grass. Mean air temperature and annual rainfall were 24.8°C and 302 mm. The soil was a loamy-sand that was poor in most nutrients, but particularly rich in phosphorus. Pennisetum ciliare was the most abundant species at the Centro Ecológico, representing over one third of total plant ground cover. Basal area for individual plants ranged from less than 1 cm2 to almost 1 m2. Living leaves per plant increased with precipitation, peaking at 199 leaves in March 2005, and no living leaves were found after 103 days without rain. The environmental conditions prevalent at Centro Ecológico are very favorable for C. ciliaris, whose establishment was apparently triggered by a major disturbance caused by the development of housing projects. El Centro Ecológico de Sonora es un área natural protegida donde la vegetación autóctona permaneció sin disturbios por lo menos hasta 1997. Desde entonces, Cenchrus ciliaris se ha convertido en un elemento prominente de la vegetación. Se estudiaron el clima, las propiedades del suelo, la estructura de la población y la actividad biológica de C. ciliaris, como una aproximación al entendimiento de los mecanismos ecológicos que favorecieron la invasión por este pasto exótico. La temperatura media del aire y la precipitación anual fueron de 24.8 °C y 302 mm. El suelo fue una arena limosa pobre en minerales, pero particularmente rica en fósforo. Cenchrus ciliaris fue la especie herbácea más abundante en el Centro Ecológico, representando más de un tercio de la cobertura vegetal. El área basal de plantas de esta especie osciló desde menos de 1 cm2 hasta casi 1 m2. El número de hojas vivas por planta aumentó con la precipitación, con un máximo de 199 hojas en Marzo de 2005, y no se encontraron hojas vivas después de 103 días sin lluvia. Las condiciones ambientales del Centro Ecológico son muy favorables para C. ciliaris, cuyo establecimiento en este sitio aparentemente fue inducido por un disturbio causado por la construcción de vivienda.
Environmental Impact on Biomass and Allelopathic Effect of Cenchrus ciliaris.L  [PDF]
RAJKUMARI PARWANI,ARCHANA MANKAD
European Academic Research , 2013,
Abstract: The study was conducted at the GEER foundation, Gandhinagar, India to evaluate environmental impact on biomass production of Cenchrus ciliaris.L (buffel grass) and its allelopathic effect on Dichanthium annulatum and Sehima nervosum. These grasses were grown in separate plots and also in combination. Growth parameters which were studied for all sets were Shoot length, Above Ground Biomass (AGB), Below Ground Biomass (BGB) and number of leaves and meteorological data were also recorded. It was observed that C.ciliaris could survive through extreme climate and Dichanthium annulatum and Sehima nervosum could not flourish in the presence of Cenchrus ciliaris, which resulted in the maximum biomass of Cenchrus ciliaris. The effect of different seasons on biomass of Cenchrus ciliaris was observed over a year. Statistical analysis of the data showed significant variation in biomass.
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