Increasing Rice Production of High Elevation Irrigated Rice with Several Location-Specific Technology Packages

Abstract Humbang Hasundutan District is the 9th rice producer in North Sumatra and has opportunity to increase productivity from 2019 harvest area of 16.3 thousand hectares, which can contribute 68.2 tons. This potential still be increased if there a significant change attitude technology adoption. Based on results interviews with several farmers who have ≥ 10 years experience farming District, problems are using local varieties that not qualified certified; low (4.17 t/ha), conventional technique, human resource capacity, unavailability professional farmer institutions. The packages introduced this activity were 7 packages, 3 Inpari 28 (T1 = NPK, T2 NPK + Org, T3 NPK-low P), 4 (T4 T5 T6 P, T7 farmer) replications. study aims obtain an effective efficient package for increasing production high-elevation irrigated rice. showed recommendations application P (T3) (T4) by 273% 215% B/C ratio 1.72 1.23, respectively, compared farmers. To support results, should return 100% straw after harvest, plant population> 200,000, young seedlings <20 days seedling (DAS), proper pest control, market orientation.