Caracterizacion y dinamica de la fertilidad fosforada de un sistema silvo-pastoril [Argentina]. Caratterizzazione e dinamica della fertilita' fosforica di un sistema silvo-pastorale [Argentina].
1998
Vazquez M.E. | Pellegrini A.E.
إنجليزي. The dynamics of phosphorus fertility was studied in a five-year trial on a silvopastoral assay. The treatments were the following: natural vegetation, Eucalyptus sp., mixed pasture and Melia azedarach. Total phoshorus, organic and inorganic phosphorus, fraction of the procedure of Bowman and Cole (1978) as well as various extractable forms were determined. No significant differences were found for the organic and inorganic phosphorus, whereas differences were reported, in Autumn only, for the assimilable forms. Significant seasonal differences for the extractable P were found, particularly for the Melia and pasture treatments, the two systems with maximum return to soil of dry matter.
اظهر المزيد [+] اقل [-][E' stata studiata la dinamica della fertilita' fosforica in una prova della durata di 5 anni su un sistema silvopastorale. I trattamenti erano i seguenti: vegetazione naturale, Eucalyptus sp., pascolo misto e Melia azedarach. Sono stati determinati il fosforo totale, organico e inorganico, la frazione della procedura di Bowman e Cole e varie forme estraibili. Non sono state riscontrate differenze significative per il fosforo organico e inorganico, mentre sono state riportate, solo in autunno, differenze per le forme assimilabili di P, in particolare per i trattamenti a Melia e pascolo, i due sistemi caratterizzati dal ritorno massimo di sostanza organica al terreno].
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
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