Search Results - "Sweet potatoes Papua New Guinea Southern Highlands Province Fertilizers."

Composting and crop production on volcanic ash soils in the Southern Highlands of Papua New Guinea / by Floyd, C. N.

Subjects: “…Sweet potatoes Papua New Guinea Southern Highlands Province Fertilizers.…”

Phosphate and potash fertilisation of sweet potato on volcanic ash soils in the Southern Highlands of Papua New Guinea / by Floyd, C.N

Subjects: “…Sweet potatoes Papua New Guinea Southern Highlands Province Fertilizers.…”