2019
DOI: 10.1007/s11540-019-09436-x
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Stabilising Urea Amine Nitrogen Increases Potato Tuber Yield by Increasing Chlorophyll Content, Reducing Shoot Growth Rate and Increasing Biomass Partitioning to Roots and Tubers

Abstract: Much of the nitrogen in crop fertiliser is degraded before acquisition. Technologies that stabilise urea-nitrogen minimise this. Degradation also specifically reduces the amount of ureic amine that many fertilisers initially contain, which is important because this nitrogen form has unique beneficial effects on plants. To investigate mechanisms whereby urea stabilisation increases potato tuber yield, we compare effects of foliar applications of chemically stabilised and non-stabilised urea against industry-sta… Show more

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Cited by 12 publications
(12 citation statements)
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“…Mirdad [42], who carried out a field study comparing the impact of organic (chicken manure) and mineral fertilizers on tuber yield of two potato cultivars (Nicola and Diamond), reported significant differences in tuber yield between the tested cultivars, although both of them showed the highest yield when moderate levels of organic (15 tons/ha) and mineral fertilization (300-150-150 kg/ha of N-P-K) were applied. Moreover, according to Wilkinson et al [43] the use of fertilizers containing stabilized urea-nitrogen may increase tuber yield through the increased plant growth and nitrogen use efficiency compared to non-stabilized and conventional fertilizers. Dry matter contents (%) of leaves, shoots and tubers are presented in Table 2.…”
Section: Resultsmentioning
confidence: 99%
“…Mirdad [42], who carried out a field study comparing the impact of organic (chicken manure) and mineral fertilizers on tuber yield of two potato cultivars (Nicola and Diamond), reported significant differences in tuber yield between the tested cultivars, although both of them showed the highest yield when moderate levels of organic (15 tons/ha) and mineral fertilization (300-150-150 kg/ha of N-P-K) were applied. Moreover, according to Wilkinson et al [43] the use of fertilizers containing stabilized urea-nitrogen may increase tuber yield through the increased plant growth and nitrogen use efficiency compared to non-stabilized and conventional fertilizers. Dry matter contents (%) of leaves, shoots and tubers are presented in Table 2.…”
Section: Resultsmentioning
confidence: 99%
“…We suspected a direct link between biomass improvement and chlorophyll maintenance in response to MG and Zr. Wilkinson et al 30 have shown previously that a correlation exists between chlorophyll content and biomass in plants. In our study, we observed an increase in chlorophyll a and total chlorophylls in response to MG treatment.…”
Section: Discussionmentioning
confidence: 95%
“…However, the yield prediction at the vegetative stage using any of these sensors might be reliable than the late growth stages of the crop. Early research found a highly significant correlation coefficient between tuber yield and leaf chlorophyll content values measured with SPAD (Majić et al, 2008;Güler, 2009;Wilkinson et al, 2019). A significant correlation was also reported between NDVI values and the yield of grain crops (Lofton et al, 2012;Cao et al, 2015;Zaeen, 2020).…”
Section: Correlation Between Tuber Yield Cm-100 Values and Ndvi At Different Growth Stages Of Potatomentioning
confidence: 94%