Root density, water use efficiency, harvest index and seed yield of hybrid canola (Brassica napus) as influenced by different irrigation schedules and nitrogen levels.

Book Title: NA
Year Published: 2008
Month Published: NA
Author: Sidhu, A. S. ; Mahal, S. S. ; Mahey, R. K. ; Krishan,Kumar
Book Group Author: NA
Abstract:

A field study on hybrid canola (Brassica napus L.) was conducted during rabi (winter) season of 2004 to find out the optimum irrigation schedule and rate of nitrogen application. The experiment was conducted in split plot design with four replications. Four irrigation schedules viz. based on CPE 40 mm (I1), 60 mm (I2), 80 mm (I3) and three recommended irrigations (I4) were kept in main plots while five nitrogen levels viz. 0 (N0), 75 (N1), 100 (N2), 125 (N3) and 150 (N4) kg/ha were kept in sub-plots. The highest seed yield (15.85 q/ha) was obtained with I4 irrigation schedule which was significantly superior over I3 but was at par with I1 and I2: Maximum root density was recorded in I1 irrigation schedule followed by I4, I2 and I3. Harvest index was not significantly affected. Water use efficiency (WUE) was maximum (35.4 kg/ha/cm) in I4 irrigation schedule followed by I1, I2 and I3. Application of 150 kg N/ha (N4) produced highest seed yield (17.73 q/ha), WUE (36.6 kg/ha/cm) and root density as compared to N0, N1, N2 and N3 levels. Control plot i.e. N0 produced significantly higher harvest index than all other nitrogen levels.

Pages: 261 - 265
URL: http:////0-search.ebscohost.com.catalog.library.colostate.edu/login.aspx?direct=true&AuthType=cookie,ip,url,cpid&custid=s4640792&db=lah&AN=20083151139&site=ehost-live
Volume: 26
Number: 1A
Journal: Environment and Ecology
Journal ISO: NA
Organization: NA
Publisher: NA
ISBN: NA
ISSN: 0970-0420
DOI: NA
Keywords:

application rates, crop yield, harvest index, irrigation,irrigation scheduling, nitrogen fertilizers, plant water relations,rape, roots, swede rape, water use efficiency, yield components, India,Punjab (India), Brassica napus var. oleifera, Brassica napus, Brassica,Brassicaceae, Capparidales, dicotyledons, angiosperms, Spermatophyta,plants, eukaryotes, South Asia, Asia, Developing Countries, Commonwealthof Nations, India, countries, canola, Capparales, oilseed rape,watering, Field Crops (FF005) (New March 2000), Plant Water Relations(FF062), Plant Production (FF100), Fertilizers and other Amendments(JJ700), Soil Water Management (Irrigation and Drainage) (JJ800)(Revised June 2002) [formerly Soil Water Management]

Source: EBSCO
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