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Titolo:
Underseeded clover as a nitrogen source for spring wheat on a Gleysol
Autore:
Garand, MJ; Simard, RR; MacKenzie, AF; Hamel, C;
Indirizzi:
Agr & Agri Food Canada, Atlantic Cool Climate Crop Res Ctr, St Johns, NF A1E 5Y7, Canada Agr & Agri Food Canada St Johns NF Canada A1E 5Y7 hns, NF A1E 5Y7, Canada Agr & Agroaliment Canada, Ctr Rech & Dev Sols & Grandes Cultures, St Foy, PQ G1V 2J3, Canada Agr & Agroaliment Canada St Foy PQ Canada G1V 2J3 Foy, PQ G1V 2J3, Canada McGill Univ, Dept Nat Resource Sci, St Anne De Bellevue, PQ H9X 3V9, Canada McGill Univ St Anne De Bellevue PQ Canada H9X 3V9 vue, PQ H9X 3V9, Canada
Titolo Testata:
CANADIAN JOURNAL OF SOIL SCIENCE
fascicolo: 1, volume: 81, anno: 2001,
pagine: 93 - 102
SICI:
0008-4271(200102)81:1<93:UCAANS>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
CROPPING SYSTEMS; WHITE CLOVER; TRIFOLIUM-REPENS; GREEN-MANURE; INTERCROPPING SYSTEMS; SOIL-NITROGEN; NITRATE; LEGUME; FERTILIZER; CORN;
Keywords:
N credits; non-N nutritional effect; N catch-crop;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Garand, MJ Agr & Agri Food Canada, Atlantic Cool Climate Crop Res Ctr, 308BrookfieldRd,POB 39088, St Johns, NF A1E 5Y7, Canada Agr & Agri Food Canada 308 Brookfield Rd,POB 39088 St Johns NF Canada A1E 5Y7
Citazione:
M.J. Garand et al., "Underseeded clover as a nitrogen source for spring wheat on a Gleysol", CAN J SOIL, 81(1), 2001, pp. 93-102

Abstract

Although there is a potential to substantially reduce N fertiliser inputs by cropping spring cereals with an interseeded legume, the agronomic value and the nitrate catch-crop effect associated with this practice are not documented under the conditions of eastern Canada. This 3-yr study estimated Ncredits and non-N nutritional effects for interseeded clover (Trifolium pratense L. 'Arlington') in spring wheat production (Triticum aestivum L. 'Algot') and assessed fall and spring nitrate (NO3-) in soil. The soil is a St. Urbain clay (Orthic Gleysol) located in the St. Lawrence lowlands. Ammonium nitrate (NH4NO3) was applied at 0, 40, 80, 120 and 160 kg N ha(-1) with or without red clover as a companion crop. Clover was incorporated as a green manure crop in mid-November Clover significantly (P less than or equal to 0.05) influenced wheat yield response to N fertilisation for 2 of the 3 yr. Clover did not reduce wheat grain yield through competition between the two plant species. Higher wheat yields with clover were attributed to N supplied by clover through mineralisation of residues incorporated in the soilthe previous fall. Nitrogen fertiliser replacement value of clover was approximately 80 kg N ha(-1) for 1994 and 1995. Clover occasionally increased NO3--N measured in the soil profile in late fall and in spring. Interseededred clover may provide most of the N needs of a companion spring wheat crop in fine-textured gleysolic soils, but is an inefficient N catch-crop.

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Documento generato il 05/12/20 alle ore 20:15:07