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Titolo:
Cover crops for saline soils
Autore:
Mitchell, JP; Thomsen, CD; Graves, WL; Shennan, C;
Indirizzi:
Univ Calif Davis, Dept Vegetable Crops, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 Vegetable Crops, Davis, CA 95616 USA Univ Calif Davis, Dept Agron & Range Sci, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 gron & Range Sci, Davis, CA 95616 USA Unif Calif Cooperat Extens, San Bernardino, CA 92415 USA Unif Calif Cooperat Extens San Bernardino CA USA 92415 dino, CA 92415 USA
Titolo Testata:
JOURNAL OF AGRONOMY AND CROP SCIENCE-ZEITSCHRIFT FUR ACKER UND PFLANZENBAU
fascicolo: 3, volume: 183, anno: 1999,
pagine: 167 - 178
SICI:
0931-2250(199910)183:3<167:CCFSS>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
TOMATO;
Keywords:
cover crops; legumes; salinity biomass;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Mitchell, JP Univ Calif Davis, Dept Vegetable Crops, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 ops, Davis, CA 95616 USA
Citazione:
J.P. Mitchell et al., "Cover crops for saline soils", J AGRON CR, 183(3), 1999, pp. 167-178

Abstract

A 3-year study was conducted in the Central Valley of California to evaluate 125 prospective winter-growing cover crops for growth and nitrogen productivity in saline soils. Soil saturation paste electrical conductivities (ECes) in the surface 15 cm averaged 7 dS m(-1) at fall planting and 5.3 dS m(-1) at spring harvest dates of each experiment. Species evaluated varied substantially in plant height. In general, the tallest plants were the Brassica species, which consistently grew to over 1.4 m. Annual grasses (barley,rye, triticale and wheat) averaged about 1.0-1.3 m in each year. Of the legume species screened, heights were greatest for Hedysarum coronarium, Trifolium alexandrium, Vicia spp., and Medicago polymorpha and truncatula, averaging 59, 47, 39, 38 and 37 cm, respectively, over all experiments. About one third of the species screened produced crop cover in excess of 90 % in each year. Groups of plants with consistently high crop cover percentages included various species/accessions of Brassica, Hedysarum, annual grasses, cool-season annual medics, Medicago polymorpha and Medicago truncatula, and two annual clovers, Trifolium alexandrium cv 'Multicut' and rose clover, Trifolium hirtum cv 'Hykon. ' Total aboveground plant dry weights were highestfor Brassica spp., which produced twice as much biomass as the annual grass species, and roughly four times as much dry matter as any of the legume species. Hedysarum, Lana and Namoi woolypod vetch, purple vetch, berseem clover, and several of the annual medic species consistently had the highest biomass among the legumes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/10/20 alle ore 12:28:59