Study in the Use of Organic Mulch and Varieties on Production Cabbage (Brassica oleraceae L.) at Different Altitude

This study aims to assess the effect of various types and varieties of organic mulch on the quantity and quality of cabbage plants (Brassica oleraceae L.) at various altitudes. This research using Random Design Group (RDG) arranged as factorial by 2 factors. The first factor is testing four varieties of cabbage: V1 (KK-Cross), V2 (Grand 11), V3 (Silvia), V4 (Talents). The second factor is testing a variety of organic mulch: M0 (without mulch), M1 (rice straw mulch), M2 (rice husk mulch). The results showed that the KK Cross varieties have crop weight (1226.11 g) or 49 tons haa-1 heavier than other varieties at an altitude of 110 meters above sea level. At an altitude of 400 meters above sea level Grand 11 Varieties resulted in crop weight (1125.00 g) or 45 ton ha-1 is heavier than other varieties. Furthermore, at an altitude of 1350 meters above sea level Grand 11 varieties produce crop weight (1055.56 g) or 42.2 tons ha-1 heavier than other varieties. 3). Rice straw mulch is better at producing crop volume (985.25 ml) than other organic mulch treatment at an altitude of 110 meters above sea level. At an altitude of 400 above sea level rice husk mulch is better (831.83 ml) in producing the crop volume and at an altitude of 1350 meters above sea level treatment without mulch is better (984.83 ml) in volume produces of crop compared to other treatments 4). Indicators of crispy on cabbage planted at an altitude of 110 meters above sea level is the Talent without mulch and mulch varieties of rice husks and varieties Grand 11 mulched straw and rice husks. At an altitude of 400 meters above sea level the crispy indicators are on the variety KK Cross with straw rice mulch. At an altitude of 1350 meters above sea level crispy indicators contained in all varieties that were given rice straw mulch and KK Cross varieties with rice husk mulch. Keywords: Mulch, Quality, Quantity and Cabbage