PENGARUH WAKTU TERHADAP INTENSITAS PENYAKIT BLAST DAN KEBERADAAN SPORA PYRICULARIA GRISEA (COOKE) SACC.PADA LAHAN PADI SAWAH (ORYZAE SATIVA) DI KECAMATAN SAMARINDA UTARA
Abstrak: The objective of this
study was to observe the effect of duration of infection on the blast intensity
and the presence of Pyricularia grisea (Cooke) Sacc. spores on lowland rice
(Oryzae sativa). The experiment was conducted in North Samarinda and also in
the Laboratory of Plant Pests and Diseases Faculty of Agriculture, University
of Mulawarman, from January up to April 2013. Survey method was used in lowland
rice fields, observations were made on rice crops in three different fields.
Each fields sample was taken eight observations are averaged from eight
samples. The results showed that the rice leaf spot because of blast, the
intensity of the blast and the number of spores of P. grisea ( Cooke ) Sacc.
around the rice crop canopy Inpari 7, Cibogo and Ciherang was affected by the
duration of infection. The longer the time available, the higher the intensity
of the blast and the greater number of spores were trapped on all varieties
tested.
Penulis: Ni'matuljannah
Akhsan, Pratiwi Jati Palupi
Kode Jurnal: jppertaniandd150843
