Agronomy of White Clover

Frame, J.; Newbould, P.

doi:10.1016/s0065-2113(08)60280-1

Cited by 307 publications

(272 citation statements)

References 230 publications

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“…O principal benefício da inclusão de leguminosas em pastagens de gramíneas de estação fria é devido ao fato que as leguminosas melhoram o valor da dieta apreendida pelo animal em pastejo (POPPI & McLLENAN, 1995 O crescimento da gramínea é aumentado pela fertilização N, e como conseqüência, a quantidade de leguminosas na pastagem é freqüentemente reduzida (DAVIS & EVANS, 1990). A redução no crescimento da leguminosa é devido principalmente ao aumento da competição por luz, água e/ou nutrientes (FRAME & NEWBOULD, 1986). A leguminosa cresce bem unicamente, quando o fornecimento de N é insuficiente para um máximo crescimento das gramíneas (HARRIS, 1990).…”

Section: Introductionunclassified

Produção animal em gramíneas de estação fria com fertilização nitrogenada ou associadas com leguminosa, com ou sem fertilização nitrogenada

Lesama

Moojen

1999

Cienc. Rural

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RESUMO O experimento foi conduzido em Santiago, RS, Brasil. Foram Palavras-chave: pastejo contínuo, fertilização nitrogenada,Trifolium vesiculosum, Lolium multiflorum, Avena strigosa. SUMMARYThe experiment was conducted in Santiago, RS, Brazil, during the period from April 24, 1996 to May 11, 1996. Animal production systems in pastures were evaluated in which the treatments were comparisons between oats + annual ryegrass + arrowleaf clover (O + R + A); oats + annual ryegrass + arrowleaf clover + 150kg/ha of nitrogen (O + R + A + N) and oats + annual ryegrass + 300kg/ha of nitrogen (O + R + N), in

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Section: Introductionunclassified

Produção animal em gramíneas de estação fria com fertilização nitrogenada ou associadas com leguminosa, com ou sem fertilização nitrogenada

Lesama

Moojen

1999

Cienc. Rural

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“…The suppressive effects of N applications on annual or seasonal legume production in mixed swards were demonstrated in several studies (Chestnutt & Lowe, 1970;Frame & Newbould, 1986), but little attention was given to the total clover content (kg clover ha· 1 ) and whether it was increasing, decreasing or remaining unchanged. TCC therefore relates to the ability of the clover component to maintain productivity levels, irrespective of the influence of the companion ryegrass component, under the conditions that prevailed during the years covered by the study.…”

Section: Total Clover Content (Tcc)mentioning

confidence: 99%

The effects of strategic nitrogen fertiliser application during the cool season on perennial ryegrass-white clover pastures in the Western Cape Province 3. Clover content

Labuschagne

Hardy²,

Agenbag

2006

South African Journal of Plant and Soil

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The influence of a single application of fertiliser N (0, 50, 100 and 150 kg N ha-1 ) applied in either autumn, early winter, late winter, early spring or late spring on the grass-clover balance in a perennial ryegrass-white clover pasture was studied over a three-year period. Responses were measured over two regrowth cycles five and ten weeks after the application of N treatments. Increased fertiliser N rates of up to 100 kg N ha-1 resulted in increasin~'y lower clover percentages. No differences in clover content were recorded between the 100 and 150 kg N ha-application rates five. weeks after fertiliser N application. The effect of season of application was inconsistent due mainly to different initial clover contents and differences in environmental conditions amongst years. Partial recovery of clover content was noted at the second regrowth cycle but not to the same levels as at the 0 kg ha-1 treatment combinations. Fertiliser N did not reduce (P>0.05) total clover OM production (kg clover ha-1 ) over 10 weeks when applied in autumn and early winter. Clover OM yields were, however, reduced (P=0.05) when fertiliser N was applied during early and late spring, excluding 50 kg N ha-1 applied during early spring 2000. The application of 50 kg N ha-1 during the relatively normal rainfall years in 2000 and 2002 did not cause the clover content to drop below 30 %. The application of 150 kg N ha-1 resulted in numerous treatment combinations where the clover percentage was less than 30 %, the recommended minimum for the pasture to benefit from the clover component.

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“…White clover (Trifolium repens L. 2n = 4X = 32) is a cool-season perennial forage legume that is adaptive to a wide range of climates in the world (Frame and Newbould 1986;Pederson 1995). It is of great value for livestock feed, soil improvement and reclaiming disturbed land because of its nitrogen fixing capability (Seker et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Improvement of drought tolerance in white clover (Trifolium repens) by transgenic expression of a transcription factor gene WXP1

Jiang

Zhang

Guo

et al. 2010

Functional Plant Biol.

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Abstract. White clover (Trifolium repens L.) is an important pasture legume in many regions of the world. A commercial cultivar of white clover (cv. Patriot) was transformed with a Medicago truncatula L. transcription factor gene, WXP1, and a reporter gene, b-glucuronidase (GUS). The WXP1 gene and the GUS gene were placed under control of the Arabidopsis CER6 promoter. GUS staining and cross-section analysis revealed the CER6 promoter directed constitutive expression in leaves and epidermis preferential expression in petioles of white clover. Independent transgenic WXP1 lines, empty vector and wild-type controls were subjected to drought stress treatment. The plants were characterised by measuring several physiological parameters including gas exchange, chlorophyll fluorescence, relative water content and leaf water potential. The WXP1 transgenic lines had higher net photosynthetic rates, higher efficiency of PSII, higher relative water content and leaf water potential under drought-stressed conditions. Consistent with the results from physiological analyses, the transgenic white clover plants carrying WXP1 showed improved tolerance to drought stress.Additional keyword: chlorophyll fluorescence, gas exchange, promoter, relative water content, transgenic plant, water potential.

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Agronomy of White Clover

Cited by 307 publications

References 230 publications

Produção animal em gramíneas de estação fria com fertilização nitrogenada ou associadas com leguminosa, com ou sem fertilização nitrogenada

Produção animal em gramíneas de estação fria com fertilização nitrogenada ou associadas com leguminosa, com ou sem fertilização nitrogenada

The effects of strategic nitrogen fertiliser application during the cool season on perennial ryegrass-white clover pastures in the Western Cape Province 3. Clover content

Improvement of drought tolerance in white clover (Trifolium repens) by transgenic expression of a transcription factor gene WXP1

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