The effect of four levels of nitrogen and time of harvest on the yield of sweet potato (Ipomoea batatas (L.) Lam) : a thesis submitted in partial fulfilment of the requirement for the Post Graduate Diploma in Agriculture /
Talopa, Pamenda.
The effect of four levels of nitrogen and time of harvest on the yield of sweet potato (Ipomoea batatas (L.) Lam) : a thesis submitted in partial fulfilment of the requirement for the Post Graduate Diploma in Agriculture / by Pamenda Talopa. - Lae : PNG University of Technology, Dept. of Agriculture, 1989. - xii, 74 p.
Sweet potatoes.
Sweet potatoes--Harvesting.
The effect of four levels of nitrogen and time of harvest on the yield of sweet potato (Ipomoea batatas (L.) Lam) : a thesis submitted in partial fulfilment of the requirement for the Post Graduate Diploma in Agriculture / by Pamenda Talopa. - Lae : PNG University of Technology, Dept. of Agriculture, 1989. - xii, 74 p.
Sweet potatoes.
Sweet potatoes--Harvesting.