Influence of Intact Tillers and Height of Cut on Regrowth and Carbohydrate Reserves of Dallisgrass ( Paspalum dilatatum Poir.) 1

Autor:	Vance H. Watson, Coleman Y. Ward
Rok vydání:	1970
Předmět:	chemistry.chemical_compound Sucrose Agronomy chemistry food and beverages Paspalum dilatatum Biology Carbohydrate biology.organism_classification Agronomy and Crop Science
Zdroj:	Crop Science. 10:474-476
ISSN:	1435-0653 0011-183X
DOI:	10.2135/cropsci1970.0011183x001000050004x
Popis:	Vegetatively propagated dallisgrass (Poir.) plants of a single clone were grown in the greenhouse and cut to a stubble height of 2.5- or 7.5-cm in a factorial combination of leaving 0, 10, 20, or 30% intact tillers. Higher daily and total regrowth yields resulted from decreasing the height of cut or leaving intact tillers. Total available carbohydrates increased as height of cut and percent intact tillers increased. Translocation of carbohydrates from intact tillers to new growth was demonstrated by treating the uncut tillers with C sucrose, glucose, and fructose, and following their movement at various time intervals with autoradiographs. Apparently 10% more intact tillers are sufficient for dallisgrass survival and growth under intensities of defoliation used in these studies.
Databáze:	OpenAIRE
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