Jerusalem Artichoke: Quality Response to Potassium Fertilization and Irrigation in Poland
The aim of this study was to determine the effects of soil potassium fertilization (150, 250 and 350 kg K<sub>2</sub>O ha<sup>−1</sup>) and irrigation on the tuber quality (content of ά-tocopherol, β-carotene, essential and endogenous amino acids) of three Jerusalem artichoke...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-10-01
|
| Series: | Agronomy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4395/10/10/1518 |
| _version_ | 1797551703514415104 |
|---|---|
| author | Bożena Bogucka Krzysztof Jankowski |
| author_facet | Bożena Bogucka Krzysztof Jankowski |
| author_sort | Bożena Bogucka |
| collection | DOAJ |
| description | The aim of this study was to determine the effects of soil potassium fertilization (150, 250 and 350 kg K<sub>2</sub>O ha<sup>−1</sup>) and irrigation on the tuber quality (content of ά-tocopherol, β-carotene, essential and endogenous amino acids) of three Jerusalem artichoke (<i>Helianthus tuberosus</i> L.) cultivars (Topstar, Violette de Rennes, Waldspindel). Jerusalem artichokes were grown during a field experiment in the Agricultural Experiment Station in Tomaszkowo (53°42′ N, 20°26′ E, north-eastern Poland). The content of ά-tocopherol and β-carotene was determined at 1.60–2.65 and 0.75–1.00 mg kg<sup>−1</sup> DM, respectively, in all Jerusalem artichoke cultivars produced in north-eastern Poland. High rates of potassium fertilizer (250 and 350 kg K ha<sup>−1</sup>) increased the content of ά-tocopherol in tubers by 47% and 66% on average, respectively. The stimulatory effects of high potassium rates on the content of ά-tocopherol (2.5-fold increase) were observed only in response to irrigation. High rates of potassium fertilizer induced a particularly high increase (3.2-fold) in ά-tocopherol concentrations in Jerusalem artichokes cv. Waldspindel. Irrigation increased ά-tocopherol levels (by 40%) and decreased the concentrations of β-carotene (by 25%) and most essential and endogenous amino acids (isoleucine, leucine, lysine, phenylalanine, valine, alanine, glycine, histidine, serine, threonine). The Topstar cultivar accumulated the highest quantities of essential and endogenous amino acids. Leucine, methionine + cysteine were the limiting amino acids in Jerusalem artichoke tubers. The analyzed tubers were characterized by very high nutritional quality of dietary protein (Essential Amino-Acid Index, 66–78). |
| first_indexed | 2024-03-10T15:48:48Z |
| format | Article |
| id | doaj.art-6e034239b46145849df5672da3a6c656 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T15:48:48Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-6e034239b46145849df5672da3a6c6562023-11-20T16:11:28ZengMDPI AGAgronomy2073-43952020-10-011010151810.3390/agronomy10101518Jerusalem Artichoke: Quality Response to Potassium Fertilization and Irrigation in PolandBożena Bogucka0Krzysztof Jankowski1Department of Agrotechnology, Agricultural Production Management and Agribusiness, University of Warmia and Mazury in Olsztyn, Oczapowskiego 8, 10-719 Olsztyn, PolandDepartment of Agrotechnology, Agricultural Production Management and Agribusiness, University of Warmia and Mazury in Olsztyn, Oczapowskiego 8, 10-719 Olsztyn, PolandThe aim of this study was to determine the effects of soil potassium fertilization (150, 250 and 350 kg K<sub>2</sub>O ha<sup>−1</sup>) and irrigation on the tuber quality (content of ά-tocopherol, β-carotene, essential and endogenous amino acids) of three Jerusalem artichoke (<i>Helianthus tuberosus</i> L.) cultivars (Topstar, Violette de Rennes, Waldspindel). Jerusalem artichokes were grown during a field experiment in the Agricultural Experiment Station in Tomaszkowo (53°42′ N, 20°26′ E, north-eastern Poland). The content of ά-tocopherol and β-carotene was determined at 1.60–2.65 and 0.75–1.00 mg kg<sup>−1</sup> DM, respectively, in all Jerusalem artichoke cultivars produced in north-eastern Poland. High rates of potassium fertilizer (250 and 350 kg K ha<sup>−1</sup>) increased the content of ά-tocopherol in tubers by 47% and 66% on average, respectively. The stimulatory effects of high potassium rates on the content of ά-tocopherol (2.5-fold increase) were observed only in response to irrigation. High rates of potassium fertilizer induced a particularly high increase (3.2-fold) in ά-tocopherol concentrations in Jerusalem artichokes cv. Waldspindel. Irrigation increased ά-tocopherol levels (by 40%) and decreased the concentrations of β-carotene (by 25%) and most essential and endogenous amino acids (isoleucine, leucine, lysine, phenylalanine, valine, alanine, glycine, histidine, serine, threonine). The Topstar cultivar accumulated the highest quantities of essential and endogenous amino acids. Leucine, methionine + cysteine were the limiting amino acids in Jerusalem artichoke tubers. The analyzed tubers were characterized by very high nutritional quality of dietary protein (Essential Amino-Acid Index, 66–78).https://www.mdpi.com/2073-4395/10/10/1518<i>Helianthus tuberosus</i> L.fertilizationirrigationά-tocopherolβ-caroteneamino acids |
| spellingShingle | Bożena Bogucka Krzysztof Jankowski Jerusalem Artichoke: Quality Response to Potassium Fertilization and Irrigation in Poland Agronomy <i>Helianthus tuberosus</i> L. fertilization irrigation ά-tocopherol β-carotene amino acids |
| title | Jerusalem Artichoke: Quality Response to Potassium Fertilization and Irrigation in Poland |
| title_full | Jerusalem Artichoke: Quality Response to Potassium Fertilization and Irrigation in Poland |
| title_fullStr | Jerusalem Artichoke: Quality Response to Potassium Fertilization and Irrigation in Poland |
| title_full_unstemmed | Jerusalem Artichoke: Quality Response to Potassium Fertilization and Irrigation in Poland |
| title_short | Jerusalem Artichoke: Quality Response to Potassium Fertilization and Irrigation in Poland |
| title_sort | jerusalem artichoke quality response to potassium fertilization and irrigation in poland |
| topic | <i>Helianthus tuberosus</i> L. fertilization irrigation ά-tocopherol β-carotene amino acids |
| url | https://www.mdpi.com/2073-4395/10/10/1518 |
| work_keys_str_mv | AT bozenabogucka jerusalemartichokequalityresponsetopotassiumfertilizationandirrigationinpoland AT krzysztofjankowski jerusalemartichokequalityresponsetopotassiumfertilizationandirrigationinpoland |