PENGARUH IMBANGAN PUPUK ORGANIK DAN ANORGANIK TERHADAP SERAPAN P DAN HASIL TANAMAN PADI SAWAH PADA DUA SISTEM BUDIDAYA DI LAHAN SAWAH SUKOHARJO
ABSTRACT: This study
aims to determine
the effect of
organic and inorganic
fertilizers and cropping systems
on P uptake and growth and yield of rice determine the most optimum. The research
was conducted in
paddy fields in
the village of
Subdistrict Wotgaleh Sukoharjo Sukoharjo
in February 2013
to May 2013
. This research
is using RCBD (Randomized Complete
Block Design) with
two factors .
The first factor
is the culture system consisting of two levels are
conventional systems ( B1 ) and SRI
systems ( System of Rice Intensification ) ( B2 ) . The second factor is the
balance of organic and inorganic fertilizers ( P ) consisting of five levels
are : ( P1 ) 100 % organic fertilizer ( Petroganik : 10 tons
/ ha )
, ( P2
) 25 %
organic fertilizer (
Petroganik : 2.5
tons / ha
) + 75 % inorganic
fertilizer ( Phonska : 225 kg / ha ) + Urea : 150 kg / ha , ( P3 ) 50 % organic
fertilizer ( Petroganik : 5 tons / ha ) + 50 % inorganic fertilizer ( Phonska :
150 kg / ha ) + Urea : 100 kg / ha , ( P4 ) 75 % organic fertilizer (
Petroganik : 7.5 tons / ha ) + 25 % inorganic fertilizer ( Phonska : 75 kg / ha
) + Urea : 50 kg / ha , ( P5 ) 100 % inorganic fertilizer (
Phonska : 300 kg /
ha ) +
Urea : 200
kg / ha
. Parameters measured
were available P ,
soil pH (
H2O ) ,
P network ,
stover dry weight
, P uptake
, total tiller number
, and dry
weight of harvested
grain. The results
showed that P
uptake in conventional cropping
systems is higher
than the SRI
cultivation system .
P uptake in conventional cultivation of 0.135 g /
clump whereas P uptake in SRI cultivation of 0.074 g / clump
. Balance of
organic and inorganic
fertilizer with the
highest P uptake
was achieved in 100 % inorganic fertilizer , Phonska : 300 kg / ha +
urea : 200 kg / ha which is 0.134 g / clump . The highest weight of dry grain
harvest was achieved in the treatment of
conventional cultivation system
with 25 %
organic fertilizer (
2.5 t /
ha Petroganik) and 7575 %
inorganic fertilizer ( 225 kg / ha of fertilizer Phonska and 150 kg / ha urea )
that is equal to 12.98 tons / ha.
Penulis: Sri Hartati, Sumani
dan Henricus E. A. Hendrata
Kode Jurnal: jppertaniandd140346
