ISSN:
1572-9680
Keywords:
Albizia julibrissin
;
Sorghum bicolor
;
humid subtropics
;
phosphorus fractionation
;
nutrient dynamics
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract An alleycropping system (AC), usingAlbizia julibrissin as the tree species, was compared to an annual legume-based cropping system (NA) over a three-year period. In both AC and NA, a crop rotation was implemented with the following sequence:Mucuna deering iana, Trifolium incarnatum, Sorghum bicolor, Triticale aestivum, andSorghum bicolor. Aboveground biomass of crops was analyzed for C, N, P, K, Ca, and Mg. A soil fractionation method was used to determine P dynamics in different treatments through time. Aboveground net primary productivity (NPP) was higher in the AC than in the NA. Nutrient input-output balance of N, P, K, Ca, and Mg from January through November 1991 was higher for AC than for NA. Area-based sorghum yield in 1991 was lower in AC than in NA. comparative sorghum yield in 1991 at 1 m distance from the hedgerow was lower than NA sorghum. In a three year period, the alleycropping system seemed to be more efficient in tapping unavailable forms of soil P, and achieved a higher P stock than the annual legume-based cropping system.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00705219
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