Botha, Philip R.

Gerber, H. S.

Meeske, Robin

Swanepoel, A.

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings XXI International Grassland Congress / VIII International Rangeland Congress The Production and Nutritional Composition of Forage Sorghum and Hybrid Forage Millet Cultivars as Pasture Crops A. Swanepoel Western Cape Department of Agriculture, South Africa Philip R. Botha Western Cape Department of Agriculture, South Africa H. S. Gerber Western Cape Department of Agriculture, South Africa Robin Meeske Western Cape Department of Agriculture, South Africa Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/15-1/23 The XXI International Grassland Congress / VIII International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 瞯 670　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　Grasslands/Rangelands Production Systems ——— Forage Quality ,Conservation and UtilizationThe production and nutritional composition of forage sorghum and hybrid forage millet cultivarsas pasture cropsA . Swanepoel , P .R . Botha , H .S . Gerber and R . Meeske 倡Department o f Agriculture Western Cape , Institute f or Plant Production , 倡 Institute f or Animal Production . OuteniquaResearch Farm , George , Republic o f South A f rica . e‐mail : annelenes ＠ elsenburg .comKey words : forage sorghum ,hybrid forage millet ,production ,nutritional compositionIntrodction Forage sorghum ( Sorghum x Sudan grass hybrid ) and hybrid forage millet ( Pennisetum glaucum ) cultivars arepalatable , high producing annual summer grasses used as forage for dairy and beef cattle in the Southern Cape of South Africa .The aim of this study was to quantify the dry matter production and quality of forage sorghum and hybrid forage millet cultivarsas pasture crops .Materials and methods The trial was carried out during the summers of ２００４ /２００５ and ２００５ /２００６ in a randomized small plottrial under irrigation on a Estcourt soil type . Fertiliser was applied to raise phosphorus level to ３５ mg kg‐１ , potassium level to８０ mg kg‐１ and pH ( KCL) to ５ .５ Three weeks after emergence ６０ kg N ha‐１ and ３０ kg K ha‐１ were applied as top dressing andthis was repeated following each cutting . The forage sorghum and hybrid forage millet cultivars were planted on the ２５th ofNovember ２００５ and ２４th of November ２００６ in １５０ mm rows at ２２ kg ha‐１ and １２ kg ha‐１ respectively . The dry matter ( DM )production , crude protein ( CP) content ( ％ ) , total CP , metabolisable energy ME ( MJ/ kg DM) , total ME ( MJ ME ha‐１ ) andNDF of samples were determined when the first forage sorghum cultivar reached a height of １ meter . All the cultivars were cutat a height of １５０ mm and samples dried at ６０ ℃ for ７２ hours .Results The hybrid forage millet cultivars Hy Pearl Millet , Nutrifeed and Speedfeed produced more than １０ tons of DM ha‐１under intensive defoliation conditions ( Table １ ) . The CP content and ME of hybrid forage millet and forage sorghum cultivarswere high when repeatedly cut at a height of １ meter . The NDF ％ of hybrid forage millet and forage sorghum cultivars wassimilar . The total CP ( kg ha‐１ ) and ME ( MJ ha‐１ ) were predominantly influenced by the DM production ( kg ha‐１ ) . The hybridforage cultivars Hy Pearl Millet , Nutrifeed and Speedfeed are , under frequent cutting conditions , a better option for forageproduction than forage sorghum cultivars .Table 1 The DM production , crude p rotein content ( CP ) , total CP ha‐1 , NDF , ME and total ME ha‐1 o f f requently cutir rigated f orage sorghums and hybrid f orage millet cultivars f or one season (2005/2006 ) at Outeniqua Research Farm ,George .Cultivars(２００５ /２００６ ) DM( ton ha‐１ ) CP( ％ ) Total CP( kg ha‐１ ) NDF( ％ ) ME( MJ kg DM‐１ Total ME( MJ ha‐１ )Hy Pearl Millet 倡Nutrifeed 倡Speedfeed 倡SilkMilkstar 倡JumboPAC ８２８８Super KingGreengrazerSuperdan ４０１Kow KandyEverlushNS １SAC ７１０HaymakerClassic GrazerSuperdanKow Kandy ExtraHunnigreenRamboAGR ３４０４Hygro １ (Wei ６ )Revolution BMRKow Kandy BMRBMR GrazerAGR ６２０１Advanta BMR１１ .３a１１ .０ab１０ .２bc９ .４cd９ .４cd９ .３cde９ .３cde９ .１def８ .９def８ .９def８ .７def８ .７def８ .７def８ .６defg８ .４efg８ .３fgh８ .２fghi８ .２fghi７ .６ghij７ .４hijk７ .４hijk７ .３ijk７ .１jk６ .６kl６ .６kl５ .９l４ .１m２０２２２１１９１９１９２０２０２０１９１９１９１９１９１９１９１９２０１９２０１９２１２０２０２０１８１９２２３２２３９３２１６８１７８６１７３９１７６７１８８３１８２０１７８０１６６９１６７５１６５３１６５３１６３４１５９６１５７７１５５８１６４０１４４４１４８０１４０６１５３３１４２０１３２０１３２０１０６２７７９６０５７５７５６６０５８５８５８５９５８５７５７５８５８５７５７５８５７５８５７５８７３５６５７５６５８５７１０９ .８１０ .２１０ .１９ .６１０ .５１０ .４１０ .５１０ .５１０ .５１０ .４１０ .８１０ .７１０ .５１１ .０１０ .７１０ .７１０ .９１０ .７１０ .５１０ .７１０ .８１０ .８１１ .１１１ .５１０ .６１１ .６１１３０００１０７８００１０４０４０９４９４０９０２４０９７６５０９６７２０９５５５０９３４５０９３４５０９０４８０９３９６０９２０２０８９２５０９２４００８７７４０８６６７０８８２９０８１３２０７７７００７８１１０７７７６０７５６００７３２６０７４７５０６１４８０４７５６０abcde : Means with no common superscript differ significantly ( P ＜ ０ .０５ )LSD (０ .０５ ) ＝ ０ .９６倡 hybrid forage millet

The Production and Nutritional Composition of Forage Sorghum and Hybrid Forage Millet Cultivars as Pasture Crops

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The Production and Nutritional Composition of Forage Sorghum and Hybrid Forage Millet Cultivars as Pasture Crops

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