The leptosols are dominant soils in the North-east of Portugal, and are occupied mainly with forest ,shrubs ,cereals and fallow 

Arrobas, Margarida

Moreira, Nuno

Pires, Jaime

Pires, João

Rodrigues, M.A.

English

Biblioteca Digital do IPB

 Fertilisation strategies for sown organic pasture in the Mediterranean Mountains of North-east PortugalJ. M. PIRES(1), M. Â. RODRIGUES(1), M. ARROBAS(1)  J. PIRES and N. MOREIRA(2)(1)Mountain Research Center, ESAB, 5301-855 Bragança, Portugal(2)Department of Plant Science and Agricultural Engineering, UTAD, 5001-911 Vila Real, PortugalIntroduction       - Leptosols are dominant in North-east of Portugal          - These areas are important to the sustainability of bovine and ovine meat production in organic farming          - This paper shows the results of fertilisation strategies in sown long-term legume-rich pastures in organic faming in these leptossol areas Material and methods– Location – Soil fertility  – Vila Meã, Portugal           41º 50’N          6º 35’ W           860 m a.s.l.                     – 24 g·Kg-1 OM       4.5 pH(H2O)         42 mg·Kg-1 P2O5      81 mg·Kg-1 K2O– Treatments – Pasture (PA) – Fertilisers – Fertiliser combinations         – Spontaneous vegetation (SV)      – Control (C)                                                         (without fertilizer)      – (i) - C     – Sown pasture (SP)      – Lime (Ca)                                        1.5  t·ha-1     – (ii) - Ca     – Bovine farmyard manure (M)      30     t·ha-1      – (iii) - M     – Phosphorous (P)                        380      kg·ha-1 (rock phosphate - 26%)      – (iiii) - Ca+P     – Boron (B)                                         7     kg·ha-1  (borax - 15.2%)      – (iiiii) - Ca+P+B      – (iiiiii) - M+Ca+P+B     – Six fertiliser combinations applied within the two pasture types (SV and SP)                                                                      – Mixture sown (SP) (kg ha-1): T. subterraneum Denmark (1.3), Gosse (1.3); T. Vesiculosum Zulu (1.3); T. michelianum Bolta (0.6); T. incarnatum Inta (1.3);                                                O. sativus Emena (1.3); O. compressus Avila (0.6); B. pelecinus Casbah (0.6); T. resupinatum Kyambro (0.6); T. repens Haifa (0.6);                                                    T. fragiferum Palestine (0.3); C. intybus Puna (0.6); L. multiflorum Pollanum (2.5); L. perenne Victorian (3.8); D. glomerata Amba (0.4);                                               Ph. aquatica Holdfast (0.6);– Data available from 2004 to 2007: yields in DM obtained at the end of spring and end of autumn in exclosure cages on a 0.5*0.5 m quadrat– Data analysed as a two-factor nested design with season x year as repeated measures (SY)Conclusions – Manure demonstrated itself to be an indispensable fertilisation strategy for pasture yield in these low fertility soils and climate conditions; – Liming may boost the reseeding of annual legumes and have also a significant effect in the medium termProject supported by Agro nº 227Results– Treatments with manure were always among the highest yielding group (Fig. 1);– SV C treatment (control) was always among the lowest yielding  group (Fig. 1);– Only the SP Ca and SP Ca P treatments had similar yields to the manure treatments       in spring 07, after natural reseeding (Fig. 1);Fig.1 - DM yields in spring and autumn for the (F(PA)) treatments           (LSD Student’s t (0.05; 96) = 0.785 t DM·ha-1)  SV MSP MSP M Ca P B SV CSP Ca PM (Autumn 2003)

Fertilisation strategies for sown organic pasture in the mediterranean mountains of North-east Portugal

https://bibliotecadigital.ipb.pt/bitstream/10198/5774/1/XXI%20IGC%20Fertilisation%20Strat%20D.pdf

Fertilisation strategies for sown organic pasture in the mediterranean mountains of North-east Portugal

Abstract

Similar works

Full text

Available Versions

Biblioteca Digital do IPB