Kurdali, F. (2009) Growth and nitrogen fixation in dhaincha/sorghum and dhaincha/sunflower intercropping systems using 15nitrogen and 13carbon natural abundance techniques. Communications in Soil Science and Plant Analysis, 40 (19-20). pp. 2995-3014.
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Abstract
A field experiment on dhaincha, sunflower, and sorghum plants grown in monocropping and intercropping systems was conducted to evaluate growth and nitrogen (N2) fixation using 13carbon (C) and 15N natural abundance techniques. Intercropping of sesbania/sorghum showed a greater efficiency than monocropping in producing dry matter during the entire growth period, whereas the efficiency of producing dry matter in the sesbania/sunflower intercropping was similar to that in the monocropping system. Moreover, sorghum plants (C4) were more competitive than sesbania (C3) for soil N uptake, whereas sesbania seemed to be more competitive than its associated sunflower (C3). Nitrogen uptake in the mixed stand of sesbania/sorghum was improved as a result of the increase in soil N uptake by the component sorghum and the greater root nodule activity of component sesbania without affecting the amount of N2 fixed. The Δ 13C in plant materials was affected by plant species and the cropping system
| Item Type: | Article |
|---|---|
| Author Affiliation: | Atomic Energy Commission, Agriculture Department, Damascus, Syria |
| Subjects: | Plant Protection > Pesticides Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 14 Jul 2011 09:46 |
| Last Modified: | 14 Jul 2011 09:46 |
| Official URL: | http://dx.doi.org/10.1080/00103620903261577 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/2281 |
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