APLIKASI BEBERAPA DOSIS PUPUK FOSFOR UNTUK PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS SORGUM (Sorghum bicolor (l.) Moench)
Abstract: The objective of
this study was to know the growth and
yield of some varieties of sorghum
which were given several dose phosphorus fertilizer.This research has
been conducted in Field Experiment and
the plant breeding laboratory, Faculty of Agriculture, University of Riau, from
April 2014 to October 2014.The study,s
arranged experimentally Randomized Block Design with two factors namely
varieties of sorghum and phosphorus fertilizer with three block. First factor
are Kawali, Numbu, Pahat dan Mandau.
Second factor are SP-36 45 kg/ha, SP-36 90 kg/ha dan SP-36 135 kg/ha. Parameters observed were
plant height, trunk base diameter, the number of leaves, number of segments per
plant, flowering age, age of harvest,
panicle lenght, weight seeds per panicle, weight 1000 seeds and yield
per m2. Data were analyzed statistically using ANOVA and followed by Duncan’s
New Multiple Range Test at level of 5%.The results showed that the provision of
phosphorus fertilizer was significantly on various varieties who researched.
The provision dose phosphorus fertilizer 90 kg/ha and 135 kg/ha significantly
increase higher plants on varieties of Numbu. The different dose of phosphorus
fertilizer 45 kg/ha and 90 kg/ha significantly increase the number of segments
on varieties of Kawali and Numbu. The provision dose phosphorus fertilizer 45
kg/ha – 135 kg/ha significantly speed up the age of harvest on varieties of
Pahat and Numbu. The provision dose phosphorus fertilizer 90 kg/ha has given highest yield/m2 on varieties
of Pahat (8,5 ton/ha) and Mandau (8,7 ton/ha). The provision dose of phosphorus
fertilizer 135 kg/ha given highest
yield/m2 on varieties of Kawali (9,0 ton/ha). The increase dose phosphorus
fertilizer 45 kg/ha – 90 kg/ha given highest yield on varieties of Pahat and
Mandau, while increase dose phosphorus fertilizer until 135 kg/ha given highest
yield on varieties of Kawali and Numbu.
Penulis: Leonalarisa Sitepu,
Elza Zuhry, Nurbaiti
Kode Jurnal: jppertaniandd150467