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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology


Effect of Stage of Cutting Alfalfa (Berseem) on Crude Protein Content and Dry Matter Yield

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Author Azizza Sife Eldein Elnour Mala, Babo Fadlalla
ISSN 2225-7217
On Pages 982-985
Volume No. 3
Issue No. 10
Issue Date November 01, 2013
Publishing Date November 01, 2013
Keywords Medicago sativa L, stage of cutting, crude protein, berseem, alfalfa



Abstract

This study focuses on factors affecting cutting of berseem (Medicago sativa L.) and the effect of the stage of cutting on crude protein content and on dry matter yield. The study was conducted in Khartoum North (EL Selate project). On afarmer was field. The major problem there is growing demand from the Gulf States for alfalfa (Medicago sativa L.) with high crude protein content reaching up to 23%. Although alfalfa with this amount of crude protein may fetch relatively high price yet it can be obtained only if the crop is cut at an early stage of maturity which reflects negatively on total dry matter production and on total crude protein produced per unit area .It is therefore important to find the optimum stage of growth for cutting alfalfa that meets the export quality requirements without seriously jeopardizing the total dry matter and crude protein production thus assuring maximum net returns per unit area of land. The main objective of this study is to investigate the some factors that affect cutting of alfalfa and the stage of cutting on crude protein content and on dry matter yield. The treatments in this study include alfalfa (Hegazi berseem) which is commercially grown in the Sudan. An area of 2.1hectar was allocated for the experiment on condition that samples will be taken at specific intervals after the farmer cuts his plot. Samples were obtained first at 7 days after harvest and thereafter at 3 day intervals until the farmer gets his next harvest which occurs usually between 21 and 30 days after the first harvest. A plot of size 6x5 m2 was randomly selected from each feddan. Three samples were cut from each plot using a quadrate 0.5x0.5 m2 and weighed in the field and after dried in an oven at a temperature of 65 degree Celsius drying to determine dry matter production. The results indicated that there is no justification to harvest alfalfa at an age of 10-13days to obtain 23% of CP as this leads to a loss of 64% in dry matter or (816kg/ha), while harvesting at 30 days gives 17.5% CP. The latter figure is within the range of CP requirement in the diets of dairy cattle (14-19%).


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