| Autor: |
Zaeen, Ahmed A., Sharma, Lakesh K., Jasim, Ahmed, Bali, Sukhwinder, Buzza, Aaron, Alyokhin, Andrei |
| Předmět: |
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| Zdroj: |
Agrosystems, Geosciences & Environment; 2020, Vol. 3 Issue 1, p1-24, 24p |
| Abstrakt: |
Undesirable growth of potato (Solanum tuberosum L.) crop under an excessive N fertilizer application is the main obstacle presently. This research was conducted to investigate the response of different potato cultivars;Russet Burbank, Shepody, and Superior, and its qualitative characteristics under a series of N rates. Six rates of N fertilization (0-280 kg ha-1) were applied on 11 sites in a randomized complete block design, with four replications. Sites with ≥30 g kg-1 of soil organic matter (OM) produced total tuber yield, marketable yield, and tuber weight per plant 39.5, 45.2, and 54.9%, respectively, higher than sites with ≤30 g kg-1 of OM. Tubers specific gravity increased by 0.18% in the sites with ≥30 g kg-1 of OM. The total tuber yield for the three cultivars was maximized at 168 kg N ha-1. Marketable specific gravity, starch, and dry matter content were achieved by applying 168 and 112 kg N ha-1 at ≤30 and ≥30 g kg-1 of OM sites, respectively. Russet Burbank produced a higher yield than Shepody and Superior cultivars significantly, but there was no significant difference among them regarding specific gravity. Excessive N application (>168 kg ha-1) decreased potato tuber production and quality. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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