ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1958.tb00111.x

出版商:Blackwell Publishing Ltd    

年代:1958

数据来源: WILEY

摘要:

French, Canadian, U.S.A., German and New‐Zealand lucerne strains were compared in a trial under four different cutting treatments from 1951 to 1955 in north‐west Norfolk. The French strains W.268 and Du Puits produced the highest yields of dry matter and crude protein, followed by Ile de France, Provence, New Zealand's Marlborough and Germany's Old Franconian Blue and Old Franconian Motley. Rhizoma was the only Canadian strain which produced a high yield of crude protein. The rest of the Canadian and all the U.S.A. strains were inferior yielders compared with those from France. W.268 and Du Puits gave the best relative distribution of dry‐matter yield over the season. The highest yield of crude protein and the best distribution of dry‐matter and crude‐protein yields over the season was given when the first cut was taken at the bud stage and the second cut at 25% flower stage. Cutting treatments with the first cuts taken at the bud stage (early) depressed the growth of weeds more efficiently than cutting treatments with the first cuts taken at the 25% flower stage. Yearly fluctuations in yields over the period of four years were moderate; the majority of strains maintained a high yield into the f

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1958.tb00112.x

出版商:Blackwell Publishing Ltd    

年代:1958

数据来源: WILEY

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1958.tb00113.x

出版商:Blackwell Publishing Ltd    

年代:1958

数据来源: WILEY

摘要:

Book reviewed in this article:RIEBEN, E. La forêt et l'économie pastorale dans le Jura. [The forest and pastoral economy in the Jura

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1958.tb00114.x

出版商:Blackwell Publishing Ltd    

年代:1958

数据来源: WILEY

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1958.tb00115.x

出版商:Blackwell Publishing Ltd    

年代:1958

数据来源: WILEY