Abstract:
Vegetables are one of the horticultural commodities that fulfill the need
for calories, vitamins, minerals, and fiber, for example green mustard and gambas.
The increase of vegetable crop production could be achieved by optimizing land
use through intercropping. This study aimed to analyze the difference of
monoculture compared to the intercropping system and to determine the best
proportion of green mustard population that would increase the yield of mustard
and gambas in the intercropping system on peatland. The research used a
randomized group design with five replications. The factor studied was the
proportion of green mustard plants intercropped with gambas plants, namely: j1
= Monoculture of green mustard spacing 20 cm x 20 cm, j2 = Green mustard
spacing 30 cm x 20 cm intercropped with gambas spacing 40 cm x 200 cm, j3 =
Green mustard spacing 40 cm x 20 cm intercropped with gambas spacing 40 cm
x 160 cm, j4 = Green mustard spacing 50 cm x 20 cm intercropped with gambas
spacing 40 cm x 120 cm, and j5 = Monoculture of gambas spacing 40 cm x 80 cm.
The results confirmed that gambas fruit fresh weight and green mustard fresh
weight per plant was better in intercropping system, however, the yield of these
two crops was greater in monoculture. The green mustards which were planted
at spacing 30 cm x 20 cm intercropped with gambas spacing 40 cm x 200 cm, was
the best proportion in intercropping in peatland compared to others population
proportion.
