Bioenergy Potentials of Elephant Grass, Pennisetum purpureum Schumach

Ohimain, Elijah I.; Kendabie, Presidor; Nwachukwu, Raymond E. S.

doi:10.9734/arrb/2014/8722

Cited by 13 publications

(9 citation statements)

References 62 publications

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“…The mean DM yield of the present result 14.13 t/ha was higher than the previous finding of 12.77 t/ha at 2 months age as reported by [10] and lower than the other findings of which was 41.05 t/ha at 4 months age as reported by [44] which might be due to the proportional increment of dry matter yield with advance in age of cutting [32]. [45] findings also showed that the dry matter yield of the wild Napier grass at first cut (harvest) ranged from 7.00-11.33 t/ha and [46] reported that yields depend on agro-ecological zone and management but on average Napier grass can give 12 to 25 t/ha of dry matter yield.…”

Section: Agronomic Traits Of Napier Grass Cultivarscontrasting

confidence: 87%

“…The result obtained from present findings was less than the fresh biomass obtained during adaptation trial at Mechara Agricultural Research Center on a station that was 163.17t/ha from ILRI#16800 and 157.3 t/ha ILRI#16840 at the age of 8 months [43]. [45] reported that similar result that wet weight of Napier grass ranged from 55.67±4.67 to 86.67±6.39 t/ha) and [17] reported 18.6 kg/m 2 which is equal to 186 t/ha. Means followed by different superscript letters within a column are significantly different each other at P < 0.05.…”

Section: Agronomic Traits Of Napier Grass Cultivarsmentioning

confidence: 78%

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Evaluation of Improved Napier Cultivars as Livestock Feed Under Farmers Conditions in West Hararghe Zone, Oromia Region, Ethiopia

Dinkale¹,

Zewdu²,

Girma³

2021

AVS

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This study was conducted to evaluate the forage production and farmers preference as livestock feed under farmer's conditions in West Hararghe Zone of Oromia region, Ethiopia. Four improved Napier grass cultivars (ILRI cultivar number: 16801, 16800, 16798, and 16840) and local check were planted in a Randomized Complete Block Design (RCBD) with six replications during the main cropping season of 2018/19. The dry matter (DM) yield, fresh biomass yield, plant height, leaf length and leaf-stem ratio and other agronomic data were measured at harvest. Farmers preference of the Napier grass cultivars as livestock feed was collected through visual and hand evaluation of the multiple ranking criteria of the cultivars based on phonological nature. The results shows that, ILRI cultivar no. 16800 was higher (P<0.01) in the leaf to stem ratio than other Napier grass cultivars tested under farmers conditions. Similarly, ILRI cultivar 16800 was higher in DM yield and fresh biomass yield (P<0.05; 16.6 t/ha and 99.40 t/ha) respectively than ILRI cultivar 16798 (11.65 t/ha and 64.53 t/ha) respectively, but similar with other cultivars. According to the farmer's and developmental agent (DA) preferences, ILRI cultivar No. 16800 scored highest (4.56) followed by ILRI cultivar No. 16840 (4.00) and ILRI cultivar No. 16801 (3.89). The lowest score was given to ILRI cultivar No. 16798 (3.11) followed by local check (3.67). The results indicated that all Napier grass cultivars was ranked beyond good performance score (>3), as an indicator for livestock feed. From this study, it is concluded that Napier grass cultivars No. 16800, 16840 and 16801 were found promising in terms of agronomic traits, DM yield and fresh biomass yield than others during main rainy season (July to September) that needs further evaluation during dry season to demonstrated and popularized as an alternative feed resources under smallholder conditions in the study areas and other places of east and West Hararghe zones of Oromia region with similar climatic and edaphic conditions.

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Section: Agronomic Traits Of Napier Grass Cultivarscontrasting

confidence: 87%

Section: Agronomic Traits Of Napier Grass Cultivarsmentioning

confidence: 78%

Evaluation of Improved Napier Cultivars as Livestock Feed Under Farmers Conditions in West Hararghe Zone, Oromia Region, Ethiopia

Dinkale¹,

Zewdu²,

Girma³

2021

AVS

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“…It was introduced as forage in many tropical and subtropical regions of the world because of its ability to produce high biomass yield under a wide range of climatic and edaphic conditions (Aroeira et al, 2001) Elephantgrass is highly efficient in fixing atmospheric CO 2 and able to accumulate more than 60 Mg ha -1 of dry matter per year (Morais et al, 2009). Although elephant grass is mainly used as an animal feed (Santos et al, 2013;Rusdy, 2016), the high biomass production, especially in tropical countries, makes it a potential feedstock for bioenergy production (Flores et al, 2012;Ohimain;Kendabie;Nwachukwu, 2014;Sales et al, 2015). As a result, research has been directed to using elephant grass biomass for biofuel production such as charcoal (Strezov;Evans;Hayman, 2008), alcohol (Soares et al, 2011), methane, or even for direct burning (Samson et al, 2005;Lee et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Preemergence herbicides on weed control in elephant grass pasture

2017

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Elephant grass (Pennisetum purpureum Schum.) is an important forage crop that has been proposed as a potential feedstock for bioenergy production. However, weed interference is a major factor limiting elephant grass production. Field experiments were conducted in 2014 and 2015 to evaluate preemergence herbicides for selective weed control in an elephant grass pasture. Herbicide treatments included atrazine + S-metolachlor, atrazine + simazine, ametryn, ethoxysulfuron, S-metolachlor, diuron + hexazinone, sulfentrazone, imazethapyr, and atrazine at label use rates. Weedy and weed-free treatments were included. Atrazine + S-metolachlor, atrazine + simazine, ametryn, ethoxysulfuron, S-metolachlor, sulfentrazone, and atrazine did not cause phytotoxicity on elephantgrass 35 days after treatment (DAT). However, diuron + hexazinone and imazethapyr were the most phytotoxic on elephantgrass, resulting in 81 and 70% phytotoxicity in 2014, and 7 and 6% phytotoxicity in 2015 respectively 35 DAT. All treatments provided effective weed control (>81%) with the exception of ethoxysulfuron (0 and 11% in 2014 and 2015, respectively), and atrazine (59% in 2014). These results show that atrazine + S-metolachlor, atrazine + simazine, ametryn, ethoxysulfuron, S-metolachlor, sulfentrazone, and atrazine were selectives when applied in preemergence in elephant grass pasture.Index terms: Bioenergy; biofuel; napier grass; forage; Pennisetum purpureum. RESUMOO capim-elefante (Pennisetum purpureum Schum.) é uma planta forrageira importante que tem sido proposta como matéria-prima potencial para a produção de bioenergia. No entanto, a interferência das plantas daninhas é um fator limitante na produção do capim-elefante. Experimentos de campo foram realizados em 2014 e 2015 para avaliar herbicidas aplicados em condições de pré-emergência para o controle seletivo de plantas daninhas em pastagem de capim-elefante. Os tratamentos herbicidas incluíram atrazine + S-metolachlor, atrazine + simazine, ametryn, ethoxysulfuron, S-metolachlor, diuron + hexazinone, sulfentrazone, imazethapyr e atrazine em doses normalmente recomendadas no rótulo. Foram incluídas as testemunhas sem capina e capinadas. Atrazine + S-metolachlor, atrazine + simazine, ametryn, ethoxysulfuron, S-metolachlor, sulfentrazone e atrazine não causaram fitotoxicidade em capim-elefante aos 35 dias após os tratamentos (DAT). No entanto, diuron + hexazinone e imazethapyr foram os mais fitotóxicos ao capim-elefante, resultando em 81 e 70% de fitotoxicidade em 2014, e 7 e 6% em 2015, aos 35 DAT, respectivamente. Todos os tratamentos de controle de plantas daninhas foram eficazes (> 81%) com a exceção de ethoxysulfuron (0 e

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“…is suitable for this purpose and widely used in cattle raising, mainly for cutting, grazing and silage production (Santos et al, 2013;Maia et al, 2015). In addition to being an excellent animal feed, elephant grass can also be used as raw material for the production of bio-gas, bio-oil, charcoal (Strezov et al, 2008;Rocha et al, 2017), and alcohol (Shakil et al, 2013), as well as for the generation of electricity (Ohimain et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

HPPD-Inhibiting Herbicides Alone or in Tank-Mix with Atrazine in Elephant Grass

Brighenti¹,

Machado²,

Lédo³

et al. 2017

JAS

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The interference imposed by weeds is one of the most important factors limiting elephant grass forage yield. Two experiments were carried out in 2015/2016 and 2017 to evaluate the selectivity and weed control of 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicides applied alone or in combination with atrazine in elephant grass. The treatments applied in the experiment conducted in Valença, Rio de Janeiro State, Brazil, were as follows: two rates of mesotrione (0.072 and 0.144 kg ha -1 + 0.5% v/v mineral oil -Assist®), two rates of tembotrione (0.075 and 0.100 kg ha -1 + 0.5% v/v mineral oil -Aureo®), atrazine + mesotrione (1.25 + 0.072 kg ha -1 + 0.5% v/v mineral oil -Assist®), atrazine + tembotrione (1.25 + 0.100 kg ha -1 + 0.5% v/v mineral oil -Aureo®), atrazine + mesotrione (1.25 + 0.072 kg ha -1 ), atrazine + tembotrione (1.25 + 0.100 kg ha -1 ) and two checks (weed-free check and weedy check). The same herbicide treatments and a check without application were applied in an experiment conducted in Coronel Pacheco, Minas Gerais State, Brazil. Two application rates of mesotrione with the addition of mineral oil or the tank mixture of atrazine plus mesotrione, with or without the addition of mineral oil, did not provide injuries capable to reduce elephant grass forage yield. Tembotrione was phytotoxic to elephant grass when applied with mineral oil. Atrazine plus tembotrione in a tank-mix, with or without mineral oil, were also phytotoxic to elephant grass. All treatments provided satisfactory weed control.

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Bioenergy Potentials of Elephant Grass, Pennisetum purpureum Schumach

Cited by 13 publications

References 62 publications

Evaluation of Improved Napier Cultivars as Livestock Feed Under Farmers Conditions in West Hararghe Zone, Oromia Region, Ethiopia

Evaluation of Improved Napier Cultivars as Livestock Feed Under Farmers Conditions in West Hararghe Zone, Oromia Region, Ethiopia

Preemergence herbicides on weed control in elephant grass pasture

HPPD-Inhibiting Herbicides Alone or in Tank-Mix with Atrazine in Elephant Grass

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