PENGARUH FRAKSI PENIPISAN AIR TANAH TERSEDIA TERHADAP PERTUMBUHAN DAN HASIL PADA TIGA VARIETAS KEDELAI (Glycine Max (L) Merril)
ABSTRACT: The objective of
this research was to find out the influences of available soil water depletion
fraction to growths and yields of three soybean varieties. This research used a
factorial design in a completely randomized design with the first factor was
the available soil water depletion fraction (p), which contained of three
treatment levels of (p); they were p1 (p=0.2 AW), p2 (p=0.4 AW), and p3 (p= 0.6
AW). The second factor was soybean varieties containing of three varieties; V1
= Willis, V2 = Kaba,
and V3 = Tanggamus, which were
repeated three times. Irrigation was
conducted when soil water levels was close to or above threshold of available
soil water depletion which was determined by measuring water level at gypsum
block and ohm meter device. Irrigation was conducted by returning water level
to field capacity condition. Treatment of available soil water depletion
fraction for the plants influences soybean in growth phase of Wilis (V1)
variety, Kaba (V2) variety and Tanggamus (V3) variety. Observation data from in
week 8 of three showed that the highest
stem growth was in Kaba variety (55.87 cm) at p2 treatment (p=0.4 AW). The
highest leave amount was Kaba variety (66.93 leaves) at treatment p2 (p=0.4
AW). The highest production
was in Kaba
variety (71.33gr) at
treatment p2 (p=0.4
AW). The highest
irrigation necessity was in treatment p2 with 18 mm water irrigation,
and then followed by p3 with 13.5 mm and finally p1 with 9 mm. The low
irrigation water necessity was influenced by high rainfall level of 578 mm with
32 rainy days during research.
Penulis: Komang Ardiyasa, RA.
Bustomi Rosadi, Afandi
Kode Jurnal: jppertaniandd150133
