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Effects of fertigation on pigment pattern and fruit quality of cv. 'Gala' applesSadar, Nadja ...Fruit pigmentation in ripening cv. 'Gala, Schniga' apples was monitored under the influence of fertigation weekly during 21 July-31 August 2009, i.e. 34 days before and 7 days after the optimal ... harvest date in Slovenia. The soil was a heavy loam clay with high humus content (2.8 %) and high acidity (low pH4.9). The spectral indices NDVI (Normalized Difference Vegetation Index) andNAI (Normalized Anthocyanin Index) were obtained by a PA 1101 on attached fruit on the transition between the ground and blush colour of the fruit surface. NAI increased slowly from 0.25 to 0.6 two weeks prior to optimum maturity. NDVI values fell from 0.9 to 0.2 before and during ripening, with significant changes starting ca. 3 weeks before and during the week after the optimum harvest date. Fertigation delayed fruit ripening viz harvest date by ca. 4 days. Fertigation delayed changes in the intensity of the fruitćs epidermal pigments, expressed as NDVI for 1 week and NAI for 4 weeks, respectively, but had no significant effect on fruit colour or NDVI and NAI values at the optimal harvest date. At this time, those fruits from the fertigated trees were firmer with a lower starch index compared with the un-fertigated control. Statistically, highly significant correlations were found (p???0.01) (r?=?0.35 to r?=?0.91, R2?=?0.11-0.83) between all the studied spectral and standard parameters i.e. fruit fresh firmness, soluble solids content and starch index.Vir: Der Erwerbs-Obstbau : Berichte aus Wissenschaft und Praxis. - ISSN 0014-0309 (Vol. 55, Iss. 1, 2013, str. 11-18)Vrsta gradiva - članek, sestavni delLeto - 2013Jezik - angleškiCOBISS.SI-ID - 3462956
Avtor
Sadar, Nadja |
Tojnko, Stanislav |
Kraner Šumenjak, Tadeja |
Lerš, Matjaž, [ok. 1983-] |
Vogrin, Andrej |
Lešnik, Mario |
Unuk, Tatjana
Teme
apple (Malus x domestica Borkh.) |
fertigation |
fruit colouration |
friut quality |
ripening |
jabolka |
sorte jabolk |
Gala |
fertigacija |
obarvanost |
zrelost
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vir: Der Erwerbs-Obstbau : Berichte aus Wissenschaft und Praxis. - ISSN 0014-0309 (Vol. 55, Iss. 1, 2013, str. 11-18)
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Sadar, Nadja | 92561 |
Tojnko, Stanislav | 13520 |
Kraner Šumenjak, Tadeja | 22648 |
Lerš, Matjaž, [ok. 1983-] | ![]() |
Vogrin, Andrej | 15067 |
Lešnik, Mario | 13492 |
Unuk, Tatjana | 19081 |
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