The effects of ploy (γ-glutamic acid) on spinach productivity and nitrogen use efficiency in North-West China
Recently, with the problem of low utilization rate of nitrogen fertilizers in farmland, agriculture practices have shifted towards the development of environmentally friendly nitrogen fertilizers. Ploy (γ-glutamic acid) is a new plant growth regulator with characteristics of water and fertilizer con...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Czech Academy of Agricultural Sciences
2018-11-01
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| Series: | Plant, Soil and Environment |
| Subjects: | |
| Online Access: | https://pse.agriculturejournals.cz/artkey/pse-201811-0001_the-effects-of-ploy-gamma-glutamic-acid-on-spinach-productivity-and-nitrogen-use-efficiency-in-north-west-c.php |
| Summary: | Recently, with the problem of low utilization rate of nitrogen fertilizers in farmland, agriculture practices have shifted towards the development of environmentally friendly nitrogen fertilizers. Ploy (γ-glutamic acid) is a new plant growth regulator with characteristics of water and fertilizer conservation. In this study, pot experiments were conducted to investigate the effects of ploy (γ-PGA) on the yield, nitrogen use efficiency and soil aggregate of spinach (Spinacia oleracea L.). The results indicated that γ-PGA (0.1%) increased plant growth (as measured by fresh and dry plant weight). However, increasing γ-PGA significantly decreased spinach quality parameters. The nitrogen utilization and use efficiency were increased with increasing γ-PGA. Ploy was stronger in water coagulation which effectively increased soil porosity and improved soil structure. The results suggest that 0.1% of γ-PGA has positive effects on spinach growth. |
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| ISSN: | 1214-1178 1805-9368 |