Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094

February 2014 Vol. 3(2): pp. 067-076

Copyright © 2014 Global Advanced Research Journals


Full Length Research Paper

Evaluation of Coconut Based Gliricidia sepium Agroforestry Systems to Improve the Soil Properties of Intermediate and Dry Zone Coconut Growing Areas

I.M.P.S. Ilangamudali1, S.H.S. Senarathneand W.C.P.Egodawatta1


Department of Plant Sciences, Faculty of Agriculture, Rajarata University of Sri Lanka, Anuradhapura, Sri Lanka1

Agronomy Division, Coconut Research Institute, Lunuwila, Sri Lanka2

Corresponding Author’s

Accepted 26 January, 2014



This study was intended to assess the potential of using coconut based G. sepium agroforestry systems to improve soil fertility of degraded coconut lands in intermediate and dry zones of Sri Lanka. Study locations were Rathmalagara Estate and Pallama Estate of Coconut Research Institute of Sri Lanka, which belong to Andigama soil series in low country intermediate zone (IL1) and Ambakele soil series in the low country dry zone (DL3) respectively. Experiment was conducted in a randomized complete block design with five treatments and three replicates. Main treatments were coconut based agroforestry systems intercropped with G. sepium, and sole coconut. A fallowed land and a sole G. sepium land were used as benchmarks. Soils from three depths i.e. 0-15 cm, 15-30 cm and 30-45 cm were analysed for its’ chemical, physical and biological properties. Results showed a significant (p<0.05) accumulation of   soil organic matter (SOM) due to incorporation of G. sepium. Mean SOM in top soil of G. sepium intercropped fields were 0.87% compared 0.49% in sole coconut, however values were quantitatively low compared to typical fertile soils. Higher soil total nitrogen (TN) was observed in G. sepium intercropped lands in both estates compared to sole coconut in same climatic zone, however quantity varied on degree of management of G. sepium such as lopping frequency. Exchangeable potassium (K) and magnesium (Mg) were observed in significantly high quantities in G. sepium intercropped fields than sole coconut. Significantly higher soil microbial activity (SMA) was observed in G. sepium managed and unmanaged conditions in both estates in contrast to sole coconut. This study reconfirms the promising results of integrating G. sepium for replenishing soil fertility of degraded coconut growing soils in intermediate and dry zone.

Keywords: Agroforestry, Coconut, Dry zone, Gliricidia sepium, Intermediate zone.



Related Articles

Original Research Articles
Mukhtar, La Hatani, Achmad Selamet Aku, Deki Zulkarnain, Dasmin Sidu, La Ode Geo, and La Ode Santiaji Bande
Development of Economic Potential an integrated coconut processing to Improve Welfare coconut farmers society in North Buton Regency
Glo. Adv. Res. J. Agric. Sci. November 2015 Vol: 4(11): - [Abstract] [Full Text - PDF] (167 KB)
François N’guessan Kouamé, Emmanuel Yapi Amonkou, Maxime N’takpé Kama Boraud, Edouard Kouakou N’guessan.
Structure of duekoué and scio protected forests under anthropogenic activities in southwestern côte d’ivoire
Glo. Adv. Res. J. Agric. Sci. February 2015 Vol: 1(1): - [Abstract] [Full Text - PDF] (795 KB)
Samuel Sarkwa Anobil
The release of smoke and air pollutants produced domestically when cooking and it solution
Glo. Adv. Res. J. Agric. Sci. August 2019 Vol: 8(7): - [Abstract] [Full Text - PDF] (1,242 KB)
Olowoyo DN and Garuba AO
Adsorption of Cadmium Ions using activated carbon prepared from Coconut shell
Glo. Adv. Res. J. Agric. Sci. October 2012 Vol: 1(6): - [Abstract] [Full Text - PDF] (204 KB)
Benard O. Muok
Potentials and Utilization of Indigenous Fruit Trees for Food and Nutrition Security in East Africa
Glo. Adv. Res. J. Agric. Sci. February 2019 Vol: 8(2): - [Abstract] [Full Text - PDF] (179 KB)
Ethan Saul
Impact of climate change on agriculture and food security in Nigeria: challenges and adaptation
Glo. Adv. Res. J. Agric. Sci. February 2015 Vol: 3(1): - [Abstract] [Full Text - PDF] (5,506 KB)

Current Issue

Viewing Options

View Full Article - PDF
Download Full Article - PDF

Search for Articles

IMPS Ilangamudali on Google Scholar
IMPS Ilangamudali on Pubmed
SHS Senarathne on Google Scholar
SHS Senarathne on Pubmed
WCP Egodawatta on Google Scholar
WCP Egodawatta on Pubmed


Viewed 1736
Printed 363
Downloaded 1956
Powered By iPortal Works