RESPONSE OF ARBILA (Phaseolus lunatus L.) PLANTS TO DIFFERENT WATER VOLUMES DURING THE DRY SEASON

Abstrak

This research was aimed to evaluating response of arbila (Phaseolus lunatus L.) to different water
volumes during the dry season has carried out for 5 months in Politani
,
s Land in Kupang. The experiments
designed using completely randomized design with 4 treatments and 5 replications. The treatments consisted
of K
100
: 100% field capacity (FC), K
75
: 75% FC, K
50
: 50% FC, and K
25% FC, respectively. The observed
variables were root length (RL) (cm), total of nodule (TN) (nodule), number of shoots (NS) (shoots/week)),
total of senescence leave (TSL) (leave), fresh matter production of forage (FMPF) (g/polybag), and dry
matter production of forage (DMPF) (g/polybag). Data analyzed by analysis of variance and continued by
Duncan multiple range test (DMRT). The results showed that water volumes were significantly to the NS, TSL,
FMPP, and DMPF but not significant to RL and TN. DMRT test showed that NS highest on the K
25
(4.35)
and followed by K
75
(3.20), K
50
(1,85), and K
25
(0.90). The highest of TSL was K
(16.60) and significantly
different to K
50
(12.40), K
75
(12.00) and the lowest was K
100
25
(3,20), K
25
(10.80). The highest of FMPF was K

(110.80), followed by K
75
(83.20), K
50
(57.00), and K
(32.60), respectively. The highest of DMPF (g/
polybag) was K
100
(23.86) followed by K
75
(16.95), K
50
25
(11.50) and K
(7.75). It could be concluded that in
the dry season, arbila plant was still able to survive up to 25% water volume from FC, and it had respons
to reduced water levels by increased the number of senescence leaves, reduced plant growth and forage
production.
25
Keywords: arbila (Phaseolus lunatus L), forage production, increase number of shoots, nodules, plant
response, water volume