01786nam a2200205 a 450000100080000000500110000800800410001902000220006010000170008224500950009926000260019430000110022049000360023152012110026765000160147865000240149465000200151865000260153865300160156418584022010-07-22       2009    bl uuuu      00u1 u    #d  a978-7-921531-80-41 aKIRCHHOF, G.  aSoil fertility in sweetpotato-based cropping systems in the highlands of Papua New Guinea.  aCanberra: ACIARc2009  a126 p.  a(ACIAR. Technical reports, 71).  aSweetpotato in highland agricultural systems of Papua New Guinea; Sweetpotato agronomy in Papua New Guinea; Sweetpotato cultivation on composted mounds in the highlands of Papua New Guinea; Genetics and disease as factors in the yield decline of sweetpotato in the Papua New Guinea highlands; Soil management in the northern Guinea savana of Nigeria; Overview of soil conservation technologies and their perception by farmers in Nigeria; Changing tillage management practices and their impact on soil structural properties in north-western New South Wales, Australia; Survey methodology to assess socioeconomic and biophysical constraints - lessons learnt in the highlands of Papua New Guinea; Statistical methods for a soil fertility management survey analysis in Papua new Guinea; An analysis of village garden management in the Papua New Guinea highlands; Biophysical constraints of sweetpotato-based cropping systems in the Papua New Guinea highlands; An evaluation of nutritional constraints on sweetpotato production in the Papua New Guinea highlands using the Diagnosis and Recommendation Integrated Sysstem (DRIS); Future potential of crops other than sweetpotato in the Papua New Guinea highlands.  aBatata doce  aFertilidade do solo  aIpomoea Batatas  aSistema de produção  aNova Guiné