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Titolo:
RESPONSE OF SPRING BARLEY TO CROP-ROTATION, CONSERVATION TILLAGE, ANDWEED MANAGEMENT IN INTENSITY
Autore:
LEGERE A; SAMSON N; RIOUX R; ANGERS DA; SIMARD RR;
Indirizzi:
ST FOY & SASKATOON RES CTR,AAFC,107 SCI DR SASKATOON SK S7N 0K2 CANADA AAAC,FERME RECH MOUTON LA POCATIERE PQ G0R 1Z0 CANADA AAAC,CTR RECH & DEV SOLS & GRANDES CULTURES ST FOY PQ G1V 2J3 CANADA
Titolo Testata:
Agronomy journal
fascicolo: 4, volume: 89, anno: 1997,
pagine: 628 - 638
SICI:
0002-1962(1997)89:4<628:ROSBTC>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
FINE SANDY LOAM; YIELD COMPONENTS; WHEAT EMERGENCE; WINTER-WHEAT; SYSTEMS; SOIL; COMPETITION; HERBICIDES; CEREALS; REGIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
41
Recensione:
Indirizzi per estratti:
Citazione:
A. Legere et al., "RESPONSE OF SPRING BARLEY TO CROP-ROTATION, CONSERVATION TILLAGE, ANDWEED MANAGEMENT IN INTENSITY", Agronomy journal, 89(4), 1997, pp. 628-638

Abstract

Constraints to the adoption of conservation tillage in central and eastern Quebec potentially Include cool aef springs, short growing seasons, and variable precipitation patterns. This study was conduct ed to determine the suitability of conservation tillage practices to cereal cropping systems in this area of Quebec. The effects of crop rotation [spring barley (Hordeum vulgare L.) monoculture; spring barley-red clover (Trifolium pratense L.) rotation], tillage [fall moldboard plow (MP); fall chisel plow (CP), and direct-seeded no-till (NT)], and weed management intensity (intensive, moderate, minimum) on populations and dry weights of crop and weeds at midseason, and on grain yields and yield components were examined on a Kamouraska clay and a Saint-Andre gravelly-sandy loam. On the clay site, moderate meed management in NT treatments resulted in crop establishment, growth, and yields comparableto those in MP treatments. Over five gears, gain yields in NT treatments averaged 2877 fig ha-l, compared with 2870 and 2260 kg ha(-1) in MP and CP, respectively, Grain yields were also consistently but not statistically higher in tile rotation (3014 kg ha(-1)) than in the monoculture (2322 kg ha(-1)). On the loam site, crop establishment, growth,and yields responded negatively to reductions in tillage and weed management intensity, Barley stand establishment and weed control in CP and NT treatments on the loam site mere less successful in the monoculture than in the rotation. No-till grain yields (1494 kg ha(-1)) were on average 7% lower than CP yields (1608 kg ha(-1)), and 29% lower thanMP yields (2076 kg ha(-1)), Rotation had no effect an grain gields onthe loam site. Findings confirm the potential of conservation tillageto generate sustained yield returns in spring barley cropping systems, provided that proper attention is given to critical aspects of the cropping system, including crop establishment and meed management.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 09:56:12