Enhancing the competitive ability of crops - Ecological Management of Agricultural Weeds - page 272

Table 6.1.( cont .)

Yield response
to crop density

Weed response Weed- Weeds

Crop to crop density a,b free present c Reference

Pea,field Townley-Smith & Wright (1994)

V( ) ( ) Boerboom & Young (1995)

Peanut Buchanan & Hauser (1980)

Ryegrass, Parr (1984,1985)

perennial
Pigeonpea

0 0 0 Díaz-Rivera et al .(1985)

Rapeseed O'Donovan (1994)

Anderson & Bengtsson (1992)

Rhizoma I Canudas et al .(1989)

peanut
Rice Smith (1968)

I,0 I, Akobundu & Ahissou (1985)

Pantone & Baker (1991)

Safflower Blackshaw (1993)

Sorghum V(0) Wiese et al .(1964)

Soybean V( ) Weber & Staniforth (1957)

V(0) V( ) Staniforth (1962)

Wax & Pendleton (1968)

Kust & Smith (1969)

McWhorter & Barrentine (1975)

0 Felton (1976)

V( ) ( ) Nangju (1978)

V( ) V V Weaver (1986)

0 Howe & Oliver (1987)

McWhorter & Sciumbato (1988)

V( ) 0 Mickelson & Renner (1997)

0 Pitelli,Charudattan & Devalerio (1998)

Sweet potato V(I) Ambe (1995)

Timothy Parr (1985)

Wheat V( ) Radford et al .(1980)

Shaktawat (1983)

V( ) V( ) Vander Vorst,Wicks & Burnside (1983)

V( ) Carlson & Hill (1985)

V(0) Medd et al .(1985)

V Moss (1985)

V( ) Skorda & Efthimiadis (1985)

Kukula (1986)

I Martin,Cullis & McNamara (1987)

Koscelny et al .(1990)

V(I) Samuel & Guest (1990)

V(0) V( ) Koscelny et al .(1991)

V Appleby & Brewster (1992)

e

Johri,Singh & Sharma (1992)

0 0 Justice et al .(1993)