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Information Journal Paper

Title

Evaluation of biomass production and nitrogen efficiency of Portulaca oleracea under green manure and nitrogen

Pages

  29-42

Abstract

 Introduction: Purslane (Portulaca oleracea L. ) is an annual and C4 plant that belong to the family of Portulacaceae. Nitrogen is the key element in soil fertility and crop production. Attention to the soil quality and health has increased in recent years, especially for sustainable production of medicinal crops. So that, for production of healthy food, using natural and on-farm inputs has been considered (Den Hollander et al., 2007). Green manure application is one of the practical ways to achieve this goal. Therefor, this study was conducted to evaluate the biomass production and nitrogen efficiency indices of Portulaca oleracea under green manure and nitrogen application. Material and methods: In this experiment, the effect of four levels of green manure including: control (Without consuming green manure), Rocket Sativa (Eruca sativa L. ), Hairy vetch (Vicia villosa L. ), mix rocket sativa and hairy vetch (Eruca sativa + Vicia villosa) and three levels of nitrogen (0, 50 and 100 kg. ha-1 ) on purslane was studied as a split plot based on random complete blocks design with 3 replications. The studied traits included dry weight of stem, leaves and shoots, leaf to stem ratio, biomass nitrogen percentage and content, uptake efficiency, biomass physiological efficiency and biomass agronomic efficiency. After completing the vegetative growth period of clover and vetch and before entering the reproductive stage, these plants were returned to the soil. Nitrogen content of shoots was measured by Kjeldahl method (Ogg, 1960). The content of biomass nitrogen was obtained by multiplying the shoots nitrogen percentage and yield. Nitrogen content of the soil also was determined to calculate nitrogen use efficiency. Results and discussion: The results showed that the application of a mixture of Eruca sativa and Vicia villosa increased dry weight of the leaf by 11. 1% compared to the control (no fertilizer consumption). The highest dry weight of shoots was obtained from the treatment of Vicia villosa and the consumption of 100 kg N. ha-1, which had a 20. 9% increase compared to the control (non-consumption of fertilizer); while the lowest dry weight of the shoots was obtained from the treatment of Vicia villosa alone, which decreased by 19. 7% compared to the control (no fertilizer consumption). The highest percentage of biomass nitrogen was obtained jointly from control treatments and consumption of 100 kg N. ha-1 and Eruca sativa and Vicia villosa mixture, which had an increase of 36. 8% and 43. 1% compared to control (no fertilizer consumption), respectively. The lowest biomass nitrogen (0. 95%) was related to the control (non-use of fertilizer). The highest nitrogen agronomic efficiency of biomass was obtained jointly from control treatments, Vicia villosa and Eruca sativa and Vicia villosa mixture with 100 kg N. ha-1, which increased by 8. 2, 4. 9 and 7. 4 percent, respectively, compared to the control (no fertilizer use). The lowest nitrogen agronomic efficiency of biomass belonged to Vicia villosa treatment alone, which decreased by 29. 7% compared to control (no fertilizer use). Conclusions: The two-year results of this experiment showed that the use of green manure along with nitrogen fertilizer, only under using 100 kg N. ha-1, improved biomass yield and nitrogen consumption efficiency. On the other hands, the treatment of cluster flower mash along with 100 kg N. ha-1 increased shoot dry weight and crop nitrogen efficiency by 20. 9% and 4. 9%, respectively, compared to control. Therefore, to produce maximum biomass yield of portulaca in Birjand, the use of green manure fertilizer Vicia villosa along with 100 kg N. ha-1 is recommended.

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    APA: Copy

    JAVADI, HAMED, REZVANI MOGHADDAM, PARVIZ, RASHED MOHASEL, MOHAMMAD HASAN, & SEGHATOLESLAMI, MOHAMAD JAVAD. (2020). Evaluation of biomass production and nitrogen efficiency of Portulaca oleracea under green manure and nitrogen. HORTICULTURAL PLANT NUTRITION, 3(2 ), 29-42. SID. https://sid.ir/paper/390171/en

    Vancouver: Copy

    JAVADI HAMED, REZVANI MOGHADDAM PARVIZ, RASHED MOHASEL MOHAMMAD HASAN, SEGHATOLESLAMI MOHAMAD JAVAD. Evaluation of biomass production and nitrogen efficiency of Portulaca oleracea under green manure and nitrogen. HORTICULTURAL PLANT NUTRITION[Internet]. 2020;3(2 ):29-42. Available from: https://sid.ir/paper/390171/en

    IEEE: Copy

    HAMED JAVADI, PARVIZ REZVANI MOGHADDAM, MOHAMMAD HASAN RASHED MOHASEL, and MOHAMAD JAVAD SEGHATOLESLAMI, “Evaluation of biomass production and nitrogen efficiency of Portulaca oleracea under green manure and nitrogen,” HORTICULTURAL PLANT NUTRITION, vol. 3, no. 2 , pp. 29–42, 2020, [Online]. Available: https://sid.ir/paper/390171/en

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