Tropical Grasslands (1985) Volume 19, 35–40

PRELIMINARY STUDIES WITH FERTILISERS AND LEGUMES FOR IMPROVING THE NATURAL GRASSLANDS OF THE ARULIHO LAND SYSTEM, GUADALCANAL

M.A. SMITH

Department of Agriculture, University of Queensland, St. Lucia, Queensland, Australia 4067

Abstract

The response of a number of legumes oversown in to natural grassland to applications of P, K, S and Mo fertilisers was measured on the Aruliho Land System, Guadalcanal, Solomon Islands. Stylosanthes guianensis grew well initially but was severely affected by anthracnose disease after early growth. This genus is the most profitable option for improvement of these grasslands but use of an anthracnose resistant line is required.
Growth of Siratro (Macroptilium atropurpureum), puero (Pueraria phaseoloides) and hetero (Desmodium heterophyllum) was fair and additions of puero and siratro to the seed mixture and the planting of hetero would provide legume species diversity and reduce dependence on stylo. Applications of 30–40 kg ha-1 P and 20 kg ha-1 S greatly increased legume growth but further research is needed to investigate programming of P and S applications in grazing as well as the need for other elements.

Download full article (398 KB PDF)  

  Return to Contributed Articles