Effects of crop and weed densities on the interactions between barley and Lolium rigidum in several Mediterranean locations
| Autor: | Jordi Izquierdo, Jordi Recasens, César Fernández-Quintanilla, Gurjeet Gill |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia, Universitat Politècnica de Catalunya. Departament d'Estructures a l'Arquitectura, Universitat Politècnica de Catalunya. POCIÓ - Protecció Vegetal, Universitat Politècnica de Catalunya. FIA - Modelització Matemàtica Funcional i Aplicacions |
| Jazyk: | angličtina |
| Rok vydání: | 2003 |
| Předmět: |
Mediterranean climate
Biomass (ecology) ved/biology Crop yield media_common.quotation_subject Lolium rigidum ved/biology.organism_classification_rank.species Biology Competition (biology) Crop Males herbes Agronomy Yield (wine) Barley Ordi -- Conreu -- Mediterrània (Regió) Mediterranean region Weed Interference Agronomy and Crop Science media_common Enginyeria agroalimentària::Agricultura [Àrees temàtiques de la UPC] |
| Zdroj: | Repositorio Abierto de la UdL Universitad de Lleida Recercat. Dipósit de la Recerca de Catalunya instname Digital.CSIC. Repositorio Institucional del CSIC UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | 8 páginas, ilustraciones y tablas estadísticas. The effects of both barley and Lolium rigidum densities on weed growth and spike production and on crop yield were examined in five field experiments carried out in the Mediterranean drylands of Spain and Western Australia. The aim was to check the consistency of the competitiveness of the crop in different environmental and management conditions. L. rigidum reduced barley yields in most of the experiments (between 0 and 85%), the number of ears per m2 being the most affected. It was found that increasing the barley seeding rate did not reduce the crop losses but did limit weed biomass (between 5 and 61%) and spike production (between 24 and 85%). The variability observed in crop yield losses between sites and seasons was related to rainfall at the beginning of the season. The most sensitive component of yield to weed competition was the number of ears per plant. Spanish project CYCIT number AGF 93-0752-C04. |
| Databáze: | OpenAIRE |
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