Adaptation of Local Sweet Potato Clones in tha Lowlands of Papua

Abstract

Objective of study was to obtain local clones of adaptive lowland ubijalar in Papua. Experiment was conducted in lowland dry season 2012/2013 in two locations, namely Keerom and Jayapura districts. Randomized Block Design (RAK), 10 local varieties of adaptive lowland Papua and two national superior varieties (Beta 2 and Cangkuang) were used. Cultivation technique used is a bund system. Results: there were three local varieties with higher yield and yield potential than Beta-2 comparison varieties (22.4 t/ha with yield potential 22.9 t/ha) and Cangkuang (20.6 t/ha with potential yield 21,6 ta/ha), while the three local varieties are Ningkay-3 having average productivity 27,5 t/ha (yield potential 28,0 t/ha) Ningkay-6 has productivity 24,9 t ha yield potential 28.1 t/ha) and Ordinance Tingkamang-1 has an average productivity of 23.8 t/ha (yield potential of 24.5 t/ha). These three varieties are Ningkay-3, Ningkay-6, and Oringking Tingkamang-1 each also has a very high tuber-dry production either compared to other test varieties or with a comparison variety, the averaged average is 9,3; 8,0 and 7.3 t/ha with dry matter 33.8; 32.3 and 30.8 percent respectively. Further testing with various seasons and more locations and varying altitude is required.

Key-words: local clon, sweet potato, Papua