University of Khartoum

Effect of intercropping, phosphorus fertilization and rhizobium inoculation on the growth and nodulation of some leguminous and cereal forages

Effect of intercropping, phosphorus fertilization and rhizobium inoculation on the growth and nodulation of some leguminous and cereal forages

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Title: Effect of intercropping, phosphorus fertilization and rhizobium inoculation on the growth and nodulation of some leguminous and cereal forages
Author: Abusuwar, Awad
Abstract: A field experiment was carried out for two consecutive seasons (2005/2006 and 2006/2007) in the Demonstration Farm of the Faculty of Agriculture at Shambat, University of Khartoum, Sudan, to study the effect of intercropping, phosphorus application and Rhizobium inoculation on the performance of some leguminous and cereal forage crops. The treatments used were pure stand, a mixture of Clitoria, lablab and Sudan grass, phosphorus fertilizer and Rhizobium inoculation. They were laid out in a completely randomized block design with three replications. Growth attributes, number of nodules, weight of nodules and prussic acid (HCN) were measured. Results showed that stem thickness was significantly affected by intercropping and addition of phosphorus. Sole crops produced forage with thicker stems during the growth of the first crop, while intercropped plants treated with phosphorus developed thicker stems during the second cut (ratoon). The plant cover was significantly higher for Clitoria than the other species. Intercropping and addition of phosphorus increased plant height of Sudan grass. The leaf area of Clitoria was increased with the addition of phosphorus and intercropping in the first crop, but sole Clitoria scored higher leaf area during the second cut. Lablab leaf area was significantly increased with addition of phosphorus and intercropping in the two seasons. Intercropping of Sudan grass with lablab and Clitoria resulted in large leaf area of Sudan grass. Leaf to stem ratio of Clitoria was mainly increased with the addition of phosphorus. Intercropping lablab with Clitoria significantly increased lablab leaf to stem ratio. The two-combination intercropping of Sudan grass increased its leaf to stem ratio. Rhizobium inoculation, legume to legume intercropping and addition of phosphorus enhanced nodulation and increased the number and weight of nodules. Phosphorus significantly reduced the amount of HCN in the forage of Sudan grass.
Description: This paper had been presented for promotion at the university of Khartoum. To get the full text please contact the other at Abusuwar @ yahoo.com
URI: http://hdl.handle.net/123456789/7163
Date: 2011


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