Search Articles: Advance Search
Agro-Science
Journal of Tropical Agriculture, Food, Environment and Extension
 

ISSN 1119-7455
   
 
         
 
 Latest Articles
    
 
Article No 9 of Volume 7.2 (2008)
 
    
 Archive
 
 
NITROGEN MINERALIZATION FROM PRUNINGS OF THREE MULTIPURPOSE LEGUME AND MAIZE UPTAKE IN ALLEY CROPPING SYSTEM.

Okonkwo C.I.1  Mbagwu J.S. C. 2 and Egwu S.O3

1Department of Soil and Environmental Management

Ebonyi State University.  Abakaliki, Nigeria. 

 

 

2Department of Soil Science, University of Nigeria Nsukka, Nigeria.

 

ABSTRACT

 A study was conducted on soil N mineralization in the field in an alley cropping system between 2003 -2005 under two soil depths (0-30cm and 30-60cm) through the utilization of an in-situ soil core technique for studying fluxes of mineral N and its uptake by maize. Result obtained indicated that N mineralization was in the pattern of Gliricidia sepium > Leucarna leucocephala > Cajanus cajan > fertilizer > control. The highest N mineralization of 78.91 mg N Kg-1 soil was obtained in the Gliricidia sepium treatment under 0-30cm soil depth. Between the alley and the fertilizer treatment, cumulative N mineralization was more in the alley treatments. Both mineralization and nitrification processes occurred more in the 0-30cm than 30-60cm soil depths. Among the legumes, low N mineralization, nitrification and ammonification were found in the Cajanus cajan alley treatments. Leaching was more pronounced in the fertilizer than in the alley treatments. However, nutrient uptake was observed highest in the alley treatments showing that nutrient recovery by maize was highest from the mineralization pruning of legumes in alley cropping system.

 

Key Words: Mineralization, Nitrification, Ammonification, Leaching, Uptake, N03-N, NH4-N, Leucaena Leucocephala, Gliricidia sepium, Cajanus cajan, Fertilizer.

Full Article (86.72Kb) | All Articles in Volume 7.2
 
 

Date:23/09/2018
 
     
 
 
 
  Copyright © 2008 All Rights Reserved  
  Website Designer:   Cygital
Home | Login | Register | About Us | Contact | Help