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PENGARUH KAYAMBANG ( Satvinia molesta D.S. Mitchell )
SEBAGAI BAHAN ORGANIK DAN SISTIM PENYIANGAN
TERHADAP PERTUMBUHAN GULMA, PERTUMBUHAN BAN HASIL TANAMAN PAD1 SAWAH
(Oryza sativa L. )
o l e h
J U M A D I
A 18.1233
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RIN GKASAN
J i lMADI. Pengaruh Kayanlbang (Sa lv in ia moles t a D.S.
Mi tche l l ) sebagai Bahan Organik dan Sis t im Penyiangan t e r -
hadap Pertumbuhan Gulma, Pertumbuhan dan H a s i l Tanaman Pa-
d i Sawah (Oryza s a t i v a L.) ( ~ i bawah bimbingan B.H. TAMPU-
30LON dan PIWAN BANGUN ) . 'Pujuan p e n e l i t i a n i n i : 1 ) mencari manfaat kayambang
sebagai bahan organik pada t a n a h sawah, 2) mengetahui pe-
ngaruh pembenaman kayambang s e g a r terhadap pertumbuhan
gulma, pertumbuhan clan has i l . tanaman padi sawah, dan
3) ~ e n c a r i sistim penyiangan yang t e p a t a p a b i l a kayambang
segar dibenamkan sebagai bahan organik.
Yercobaan i n i menggunakan Rancangan Petak T e r p i s a h
( S p l i t P l o t ) t i g a ulangan d i Kebun Percobaan B a l a i Penel i -
t i a n Tanaman Pangan, Muara, Bogor pada bulan Iviei sampai
September 1904, dengm menggunakan tanaman p a d i v z r i e t a s
Porong, Kayambang segar s e b a g a i bahan organik sebanyak
0, 2 5 dan 50 tori per h e k t a r ditempatkan pada P e t a k Utama.
Sis t im penyiangan, yang t e r d i r i d a r i : t i d a k d i s i a n g , d i -
s i ang dengan tangan pada 21 dan 42 HS'P ( h a r i s e t e l a h t a -
nan) , d i s i a n g dengan Londax G (bahan a k t i f 0.2 %) 7.5 kg
bahan dagang p e r hektarpada_6_KS& dan l i i n i a n . . w e n -
Arozin D 30 EC/30 EC 1.6 l i t e r bahan dagang p e r h e k t a r
pada 6 HST ditempatkan pada Anak Petak. Ukuran p e t a k
7 m x 5 m. Dosis pupuk yang digunakan adalah 90 kg N ,
I 5 1% r205 dan 40 kg K20 p e r hek ta r .
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Pei~lbenaman bahan organik sebanyak sebanyak 25 dan 50
t o n per h e k t a r dapa t menekan s e c a r a n y a t a popu la s i m- nochloa colon{-xi dm- be ra t k e r i n g P a s p a l m d is t i chum,
t e t a p i t i d a k berpengaruh n y a t a t e r h a d a p h a s i l gabah k e r i n g
g i l i n g . Penyiangan dengan Londax menekan s e c a r a n y a t a per-
tuinbuhan Dlonochoria v a g i n a l i s dan Sc i rpus ;iuncoides, t i d a k
berpengaruh n y a t a terhadap t i n g g i tanaman maksimum (75 HST),
jumlah anakan maksimum (45 HST) dan h a s i l gabah k e r i n g g i -
l i n g tanaman pad i . Penyiangan dengan Arozin menekan se -
c a r a nya t a pertumbuhan Monochoria v a g i n a l i s , S c i r p u s -- coides , Cyperus iris dan gulma t o t a l , t i d a k berpengaruh
nya ta t e r h a d a p t i n g g i tanaman maksimum (75 HST), jumlah
anakan maksimum (45 HST) d'an h a s i l gabah ke r ing g i l i n g
t anaman pad i .
Spes i e s Pasualum dis t ichum r e l a t i f l e b i h dominan d i -
bandingkan s p e s i e s gulma yang l a i n . Penyiangan dengan
Londax roaupun Aroz in Selum mampu menekan pertumbuhan
Paspalurn d i s t i chum. Pembenaman kayambang segar ke t a n a h
sawah dapat meningkatkan e f e k t i v i t a s penekanan pertumbuh-
an gulma t o t a l kedua j en i s h e r b i s i d a t e r s e b u t .
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PZNGARUH .UYAP/:BANG ( S a l v i n i a mo les t a D.S . M i t c h e l l )
SEBAGAI BAHAN OFtCtANIK DAN SISTIM PENYIAlVGAN
TEKUDAP PERTUMBUHAN GUINA , PERTUMBUHAN
DAN HASIL TANAMAN PAD1 SAWAH
(Oryza s a t i v a L.)
Oleh
J U M A D I
A. 181237
Laporan Karya I lmiah (AGR 499) sebaga i
s a l a h s a t u syarat untuk memperoleh
g e l a r Sa r j ana P e r t a n i a n
pada
Fakul tas P e r t a n i a n I n s t i t u t P e r t a n i a n Bogor
FAXUIll'AS PERTAIVIAN INSTITUT PERTANIAN BOGOR
B O G O R
1 9 8 6
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INSTITUT PERTANIAN BOGOR
PAKUUCAS PERTANIAN , JURUSAN BUDIDAYA PERTANIAN
K a m i rnenyatakan bahwa Laporan Karya I l m i a h (AGR 499)
i n i d i s u s u n oleh :
N a m a Mahasiswa : J U M A D I
Nomor Pokok : A. 181233
J u d u l : PENGARUH KAYAMBANG ( S a l v i n i a
m o l e s t a D.S. M i t c h e l l ) SEBAGAI
BAHAN ORGANIK DAN SISTIM PENYI-
ANGAW TERHADAP PERTUPlBUHAN GUIMA,
PERTUMBUHAN DAN HASIL TANAMAN
PAD1 SAWAH (Oryza sativa L.)
Di te r ima sebagai p e r s y a r a t a n untuk memperoleh g e l a r
S a r j a n a P e r t a n i a n pada P a k u l t a s Pe r t an i an , I n s t i t u t Per-
t a n i a n Bogor.
IT B%. Tarnpubolon
Pembimbing I1
Ir Sugeng Sud ia t so , MS
~ u r u s a n P a n i t i a Karya I lmiah
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