Effect of Cut Plant Residue Management and Fertilization on the Dry-Matter Yield of Swards and on Carbon Content of Soil

Autor:	Merrit Noormets, Tiina Köster, Karin Kauer, Triin Varul, H. Raave, Are Selge, Argaadi Parol, R. Viiralt, Raimo Kõlli, I. Keres, Toomas Laidna
Rok vydání:	2013
Předmět:	Total organic carbon Poa pratensis biology Chemistry Soil Science engineering.material biology.organism_classification Lolium perenne Phleum Agronomy engineering Trifolium repens Dry matter Fertilizer Festuca rubra Agronomy and Crop Science
Zdroj:	Communications in Soil Science and Plant Analysis. 44:205-218
ISSN:	1532-2416 0010-3624
DOI:	10.1080/00103624.2013.736304
Popis:	The goal of this research was to study the impact of cut plant residues, returned to or removed from the grassland sward, on the dry-matter yield of swards and on the organic carbon (Corg) concentration of soil. The experiment was carried out during 2004–2008. The variables of the experiment were (i) sward type: turfgrass sward (Festuca rubra rubra and Poa pratensis) and grass–clover sward (Phleum pratense, Lolium perenne, and Trifolium repens) and (ii) treatment of residues: the cut plant residues were returned (RRT) to the plots or removed (RRM) from the plots after the mowing. The fertilizer treatments were as follows: N0P0K0, N80P11K48, N160P22K96, and N400P56K240 kg ha−1 for the turfgrass sward and N0P0K0 and N80P26K50 kg ha−1 for the grass–clover sward. The Corg and Ntot concentrations in the 20-cm soil layer were measured at the beginning and at the end of the experiment at depths of 0–5 cm and 5–20 cm. Nitrogen was returned as plant residues to the grass–clover sward in treatment N0P0K0 at 190 kg ...
Databáze:	OpenAIRE
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