Wheat-Faba bean intercrops improve plant nutrition, yield, and availability of nitrogen (N) and phosphorus (P) in soil
2022
Kaci, G. | Ouaret, W. | Rahmoune, B.
英语. Received: June 27th, 2022 ; Accepted: July 27th, 2022 ; Published: August 1st, 2022 ; Correspondance: [email protected]
显示更多 [+] 显示较少 [-]英语. In order to promote agroecological practices, this study compares two croppingsystems, i.e., intercropping versus sole cropping of a cereal - durum wheat (Triticum durumDesf. ) and a nitrogen-fixing legume - faba bean (Vicia faba L.) on plant growth, Efficiency inthe use of rhizobial symbiosis (EURS), grain yield and phosphorus (P) and nitrogen (N)accumulation in soil and plant. This study conducted during two cropping seasons in a field trialin the region of Tizi Ouzou, Algeria, shows that shoot dry weight (SDW), nitrogen nutrition index(NNI), phosphorus use efficiency (PUE), land use efficiency (LER), and grain yield weresignificantly higher for intercropped than for the sole cropped wheat. Furthermore, there was aconsiderable increase in soil P and N content across the two years of intercropping and solecropping compared to the unseeded weeded fallow. Intercropping, it is claimed, improves wheatN nutrition by increasing the availability of soil-N for wheat. This increase might be due toreduced interspecific competition between legumes and wheat plants than intraspecificcompetition between wheat plants due to the legume’s ability to compensate by atmosphericnitrogen fixation.
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