Floyd, C.N. <br/><br/>
Phosphate and potash fertilisation of sweet potato on volcanic ash soils in the Southern Highlands of Papua New Guinea / 
C. N. Floyd, E. J. D'Souza and R. D. B. Lefroy. 
 - Konedobu :  Dept. of Primary Industry,  1987. 
 - 29p. 
 - AFTSEMU technical report ;  no. 15. .
 - Technical report ;  87/7. .
 - Technical report (Papua New Guinea. Dept. of Primary Industry) ;  87/7. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Potassium fertilizers--Papua New Guinea--Southern Highlands Province.<br/>Phosphatic fertilizers--Papua New Guinea--Southern Highlands Province.<br/>Sweet potatoes--Fertilizers.--Papua New Guinea--Southern Highlands Province<br/>Sweet potatoes--Fertilizers.