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Titolo:
BERMUDA GRASS RESPONSE TO NITROGEN-FERTILIZATION AND REGROWTH AGE .9.RESIDUAL NITROGEN
Autore:
HERRERA RS; HERNANDEZ Y;
Indirizzi:
ACAD SCI CUBA,INST ANIM SCI,APARTADO 24 HAVANA CUBA
Titolo Testata:
Cuban journal of agricultural science
fascicolo: 2, volume: 27, anno: 1993,
pagine: 223 - 230
SICI:
0864-0408(1993)27:2<223:BGRTNA>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Keywords:
COAST CROSS-1 BERMUDA GRASS; AGE; RESIDUAL-N; YIELD; QUALITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
R.S. Herrera e Y. Hernandez, "BERMUDA GRASS RESPONSE TO NITROGEN-FERTILIZATION AND REGROWTH AGE .9.RESIDUAL NITROGEN", Cuban journal of agricultural science, 27(2), 1993, pp. 223-230

Abstract

In a split plot design with 4 replications, the residual N effect on yield and quality of Coast cross 1 bermuda grass was studied when fertilized with 0, 200 and 400 kg N/ha/year and cutting from the second tothe eleventh week of regrowth. For DM yield there was interaction (P < 0.05) between treatments and from the sixth week more than 1 t DM/hawas obtained when the greatest N dosage was applied and it did not surpass the 4.5 t/ha at 11 weeks. Cell content was increased (P < 0.05) with N and varied significantly with age. The protein content increased (P < 0.05) with N and decreased (P < 0.05) with age ranging between 13 and 2%. For structural carbohydrates the increase of residual N reduced (P < 0.05) these indicators and the effect of age was variable. There was interaction (P < 0.05) between treatments for the digestibility which varied between 20 and 55% and quadratic regression equations were adjusted between this indicator and age whose lowest coefficient of determination was of 0.62. It is suggested that after 12 weeks of Napplication, the residual effect does not allow to obtain high yieldsnor adequate pasture quality.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 18:48:32