Beneficial Effects of Nitrogen-Fixing Bacteria on the Growth and the Yield of Corn Cultivated at an Giang Province
| Main Authors: | Thai Thanh Duoc, Nguyen Huu Hiep |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 2022
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5921751 |
Daftar Isi:
- Abstract— A net house and a field experiment were conducted in An Phu district, An Giang Province to assess the effectiveness of bacterial strains applied to the NK7328 corn. Bacterial cultures of Bacillus aryabhattai ADR3 and Klebsiella pneumoniae DNR5, which were isolated from rehabilitated corn soils in the Mekong delta Vietnam, were used in this study.The experimented soil type was silty clay loam, pH 5.64, and total N (0.063%). The recommended fertilizer dose was NPK 180 kg N+135 kg P2O5+90 kg K2O/ha and corresponding to 100% N+100% P2O5+100% K2O. In the treatments, the percentage of nitrogen (% N) increased gradually from 0% N, 25% N, 75% N, 100% N. There were 15 treatments that were growing in pots in the greenhouse, and 20 treatments that were in the randomize complete block designed in the fields experiment. Each treatment had 4 replications.The results of the experiments showed that corns, which inoculated with nitrogen-fixing bacteria, and applied 75% N, helped increasing plant height, stem diameter, leaf color, number of leaves, ear corn height, fresh shoot weight, fresh root weight, dry weight of the plant, amount of N, 1000-seed weight, and the higher yield compared to the corns which applied 100% N and without inoculation. Inoculated corn with Klebsiella pneumoniae DNR5 strains gave a higher yield than inoculated corn with Bacillus aryabhattai ADR3. Thus, inoculating corn with bacterial strains, 25% N could be saved.