KAJIAN DISTRIBUSI AIR PADA TANAH INCEPTISOL BERTANAMAN KEDELAI DENGAN JUMLAH PEMBERIAN AIR YANG BERBEDA
ABSTRACT: Knowing water
distribution in soil is important as one of the reason for irrigation. This
research was purposed to study water distribution in Inceptisol soil planted
with soybean at 100%, 80%, 60% field capacity and its effect on soybean plant’s
production. The parameters observed were the characteristic of the soil
physics, field capacity, evapotranspiration, water distribution, dry weight of
soybean plant and pods weight.The results showed that Inceptisol soil had sandy
clay loam texture. The highest porosity was found at 6-10 cm depth i.e. 63,06%.
The lowest porosity was found at 0-5cm depth i.e. 54,23%. Water field capacity
was 47,7%(dry basis). Soybean plant evapotranspiration at middle growth phase
was 1,97 mm/day and the last growth phase was 1,58 mm/day. The highest water
level was found at 6-10 cm depth i.e. 20,58-32,49% (dry basis). The lowest water
level was found at 0-5 cm depth i.e. 20,34-26,63% (dry basis). The dry weight
of soybean plant at the middle growth phase at 100% field capacity was 16,51 g,
at the last growth phase was 14,89 g and pods weight was 13,20 g. The dry
weight of soybean plant at the middle growth phase at 80% field capacity was
14,23 g, at the last growth phase was 11,77g and pods weight was 10,78 g. The
dry weight of soybean plant at the middle growth phase at 60% field capacity
was 13,12 g, at the last growth phase was 10,97 g and pods weight was 8,76g.
Penulis: Juni Artina Alberta,
Sumono, Adian Rindang
Kode Jurnal: jppertaniandd160021
