Potato yield and tuber set as affected by phosphorus fertilization
In order to minimize phosphorus (P) leaching from potato cropping systems, P recommendations based on facts regarding the influence on the potato plant is needed. A literature study and a practical experiment were conducted in order to determine potato yield a...
| Autor principal: | |
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| Formato: | Otro |
| Lenguaje: | sueco Inglés |
| Publicado: |
2007
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| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/12491/ |
| _version_ | 1855572073769861120 |
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| author | Ekelöf, Joakim |
| author_browse | Ekelöf, Joakim |
| author_facet | Ekelöf, Joakim |
| author_sort | Ekelöf, Joakim |
| collection | Epsilon Archive for Student Projects |
| description | In order to minimize phosphorus (P) leaching from potato cropping systems, P recommendations based on facts regarding the influence on the potato plant is needed. A literature study and a practical experiment were conducted in order to determine potato yield and tuber set as affected by Pfertilization. The influence of soil moisture on P availability and the effects of foliar‐ P application were also investigated. Five different nutrient P treatments ranging from 0 to 0.3 g/pot were evaluated. Each nutrient P treatment was divided into 8 doses and applied weekly to plantlets grown in 50% pumice stone‐ 50% peat. Two different soil moisture levels were tested, "moist treatment" ranging from 0.35 to 0.45 g cm‐3 and "dry treatment" ranging from 0.25 to 0.35 g cm‐3. Foliar‐ P applications were applied 16 and 26 days after emergence (d.a.e.) in line with common practice recommendations. Nutrient P treatments significantly effected the total fresh weight of tubers, shoots and tuber number. The moist treatment gave significant higher yield of both tubers and tuber number compared to the dry treatment which could beexplained by an increased P uptake. The foliar‐ P application resulted in higher tuber yield only in plants with low P status within the moist treatment; indicating that plant water and P status might be important for P uptake through leaves. The foliar‐ P applications however, gave no significant effects on tuber number. |
| format | Otro |
| id | RepoSLU12491 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish Inglés |
| publishDate | 2007 |
| publishDateSort | 2007 |
| record_format | eprints |
| spelling | RepoSLU124912017-10-28T04:01:20Z https://stud.epsilon.slu.se/12491/ Potato yield and tuber set as affected by phosphorus fertilization Ekelöf, Joakim Horticulture (until 121231) Fertilizing In order to minimize phosphorus (P) leaching from potato cropping systems, P recommendations based on facts regarding the influence on the potato plant is needed. A literature study and a practical experiment were conducted in order to determine potato yield and tuber set as affected by Pfertilization. The influence of soil moisture on P availability and the effects of foliar‐ P application were also investigated. Five different nutrient P treatments ranging from 0 to 0.3 g/pot were evaluated. Each nutrient P treatment was divided into 8 doses and applied weekly to plantlets grown in 50% pumice stone‐ 50% peat. Two different soil moisture levels were tested, "moist treatment" ranging from 0.35 to 0.45 g cm‐3 and "dry treatment" ranging from 0.25 to 0.35 g cm‐3. Foliar‐ P applications were applied 16 and 26 days after emergence (d.a.e.) in line with common practice recommendations. Nutrient P treatments significantly effected the total fresh weight of tubers, shoots and tuber number. The moist treatment gave significant higher yield of both tubers and tuber number compared to the dry treatment which could beexplained by an increased P uptake. The foliar‐ P application resulted in higher tuber yield only in plants with low P status within the moist treatment; indicating that plant water and P status might be important for P uptake through leaves. The foliar‐ P applications however, gave no significant effects on tuber number. I arbetet mot ett minskat forsforutsläpp från Sveriges potatisodlingar krävs grundläggande kunskaper om fosforns inverkan på potatisplantan för att korrekta rekommendationer skall kunna ges till våra odlare. I detta arbete som innefattar både en litteraturstudie och ett praktiskt odlingsförsök har fosforns inverkan på knölsättning och skörd studerats i detalj. Även markfuktens inverkan på fosforns tillgänglighet och bladgödslingens effekt på potatisplantan har studerats. I försöket som är utfört i artificiella växtkammare har fem fosforgivor som varierar mellan 0 och 0,3 g fosfor per kruka testats. Varje behandling delades upp i 8 givor och tillfördes en gång i veckan till varje individuell planta som var planterad i ett substrat som bestod av 50% pimpsten och 50% torv. Två olika fuktighetsnivåer testades, en ”fuktig behandling” som varierade från 0.35 till 0.45 g cm‐3 och en ”torr behandling” som varierade från 0.25 till 0.35 g cm‐3. Bladgödslingen utfördes vid två tillfällen, första behandlingen gjordes 16 dagar efter uppkomst och den andra efter 26, helt enligt de rekommendationer som finns. Fosforgivorna påverkade både vikt och knölantal signifikant liksom hög markfukt som gav högre skörd och fler knölar vilket kunde knytas till ett ökat fosforupptag. Bladgödslingen av fosfor gav en signifikant skördeökning endast i plantor med låg fosforstatus i de fuktiga leden vilket antyder att plantans vatten och fosforstatus kan vara av betydelse för fosforns upptag genom bladen. Bladgödslingen resulterade dock inte i fler antal knölar. 2007-08-14 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/12491/1/ekelof_j_171027.pdf Ekelöf, Joakim, 2007. Potato yield and tuber set as affected by phosphorus fertilization. UNSPECIFIED, Alnarp. Alnarp: (NL, NJ) > Horticulture <https://stud.epsilon.slu.se/view/divisions/ANSTI=3A1600.html> urn:nbn:se:slu:epsilon-s-8334 eng |
| spellingShingle | Horticulture (until 121231) Fertilizing Ekelöf, Joakim Potato yield and tuber set as affected by phosphorus fertilization |
| title | Potato yield and tuber set as affected by phosphorus fertilization |
| title_full | Potato yield and tuber set as affected by phosphorus fertilization |
| title_fullStr | Potato yield and tuber set as affected by phosphorus fertilization |
| title_full_unstemmed | Potato yield and tuber set as affected by phosphorus fertilization |
| title_short | Potato yield and tuber set as affected by phosphorus fertilization |
| title_sort | potato yield and tuber set as affected by phosphorus fertilization |
| topic | Horticulture (until 121231) Fertilizing |
| url | https://stud.epsilon.slu.se/12491/ https://stud.epsilon.slu.se/12491/ |