Water use of onion under no-tillage planting system for different rates of cover crop residue as compared to conventional system.

Book Title: NA
Year Published: 2008
Month Published: NA
Author: Marouelli, W. A. ; Abdalla, R. P. ; Madeira, N. R. ; Silva, H. R. da ; Oliveira, V. R.
Book Group Author: NA
Abstract:

The overall objective of this study was to evaluate the effect of cover crop residue of millet (0.0; 4.5; 9.0; 13.5 t ha-1 dry matter) on water use of onion cultivated under no-tillage planting system (NT) as compared to conventional tillage system (CT). The experiment was carried out at Embrapa Vegetables, Brazil, under typical Savanna biome. A randomized block design in three replications was adopted. Total net water depth applied to NT over the crop cycle was as much as 19% smaller than the CT treatment, but water savings reached 30% for the 30 days following transplanting. Crop biomass, bulb yield, and rate of rotten bulbs were not affected by treatments. Water use efficiency of onion plants under NT conditions increased linearly with increasing of crop residue. Water use efficiency of NT with rates of crop residue from 4.5 to 13.5 t ha-1 was 30% higher than the control treatment. For NT13.5 t/ha were adjusted single (time-averaged) crop coefficients of 0.74, 0.68, 0.93 and 0.73 for initial, vegetative, bulbification, and maturation stages, respectively.

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URL: http:////0-search.ebscohost.com.catalog.library.colostate.edu/login.aspx?direct=true&AuthType=cookie,ip,url,cpid&custid=s4640792&db=lah&AN=20103078743&site=ehost-live
Volume: NA
Number: NA
Journal: Central theme, technology for all: sharing the knowledge fordevelopment. Proceedings of the International Conference of AgriculturalEngineering, XXXVII Brazilian Congress of Agricultural Engineering,International Livestock Environment Symposium - ILES VII
Journal ISO: NA
Organization: NA
Publisher: NA
ISBN: NA
ISSN: NA
DOI: NA
Keywords:

biomass, crop yield, maturation, no-tillage, onions, plantresidues, plant water relations, vegetative period, water use, water useefficiency, Brazil, Distrito Federal, Allium, Allium cepa, Allium,Alliaceae, Liliaceae, Liliales, monocotyledons, angiosperms,Spermatophyta, plants, eukaryotes, South America, America, DevelopingCountries, Threshold Countries, Latin America, Brazil, Brasilia,no-tillage systems, zero tillage, Horticultural Crops (FF003) (New March2000), Plant Water Relations (FF062), Plant Production (FF100), SoilManagement (JJ900), Plant Wastes (XX200)

Source: EBSCO
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