Maximization of Potato Yield Under Constraint<sup>1</sup>

Hermanson, H. P.

doi:10.2134/agronj1965.00021962005700020023x

Cited by 4 publications

(1 citation statement)

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“…These results are in line with Schippers (1968), who mentioned that increasing N rates reduced tuber quality due to an increase of tuber water content. However, other researchers (Hermanson, 1965; Kelling & Speth, 2004; Kelling, Stevenson, Speth, & James, 2016) did not observe any effect of N rates on specific gravity, starch content, and dry matter (Teich & Menzies, 1964; Zebarth et al., 2004). In some situations, specific gravity, starch, and dry matter content levels may increase compared to the zero N rate.…”

Section: Discussionmentioning

confidence: 93%

Yield and quality of three potato cultivars under series of nitrogen rates

Zaeen

Sharma

Jasim

et al. 2020

Agrosystems Geosci & Env

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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.

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