دورية أكاديمية
PHOSPHORUS FRACTIONS AND AVAILABILITY IN A HAPLIC PLINTHOSOL UNDER NO-TILLAGE SYSTEM IN THE BRAZILIAN CERRADO
| العنوان: | PHOSPHORUS FRACTIONS AND AVAILABILITY IN A HAPLIC PLINTHOSOL UNDER NO-TILLAGE SYSTEM IN THE BRAZILIAN CERRADO |
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| المؤلفون: | Leonardo Ricardo Rotta, Helder Barbosa Paulino, Ibanor Anghinoni, Edicarlos Damacena de Souza, Guilherme Lopes, Marco Aurélio Carbone Carneiro |
| المصدر: | Ciência e Agrotecnologia, Vol 39, Iss 3, Pp 216-224 (2015) |
| بيانات النشر: | Universidade Federal de Lavras, 2015. |
| سنة النشر: | 2015 |
| المجموعة: | LCC:Agriculture (General) |
| مصطلحات موضوعية: | Adsorção de fósforo, fósforo disponível, sistema plantio direto, Agriculture (General), S1-972 |
| الوصف: | Soil use and fertilizer management as well as cropping systems influence phosphorus (P) availability in the soil. This study evaluated P fractions and availability in a chronosequence of anthropic influence in a Haplic Plinthosol, in sites under no-till for different time periods: seven (NT7), eleven (NT11), and sixteen (NT16) years. Labile P concentrations in the soil accounted for 10%, 8%, and 9% of the total P for treatments NT7, NT11, and NT16, respectively. The labile P values ranged between 99 and 122 mg dm-3andindicatied no time in no-tillage influence on labile P under in the studied Plinthosol. However, moderately labile P contents increased with time: NT7 < NT11 < NT16 (237, 341, and 375 mg dm-3, respectively). This increased followed the elevation in iron oxide contents, indicating a relationship between mineralogy and P accumulation. Regardless of no-tillage period, P contents extracted by Mehlich-1 were lower, underestimating the available P content, when compared with the extraction using a P selective resin. The stocks of labile P were sufficient to maintain high crop yields, according to the recommendations for the Cerrado region. Even if labile P contents are reduced, when adopting no-till system, the contents and stocks of P in the soil after several years were high enough to provide for adequate crop yields. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Spanish; Castilian Portuguese |
| تدمد: | 1981-1829 1413-7054 12948756 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000300216&lng=en&tlng=en; https://doaj.org/toc/1981-1829 |
| DOI: | 10.1590/S1413-70542015000300002 |
| URL الوصول: | https://doaj.org/article/42eb669feff441c0ae1a5f1294875618 |
| رقم الأكسشن: | edsdoj.42eb669feff441c0ae1a5f1294875618 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19811829 14137054 12948756 |
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| DOI: | 10.1590/S1413-70542015000300002 |