Pengaruh waktu aplikasi paclobutrazol terhadap pertumbuhan dan produksi tiga varietas padi sawah (Oryza sativa L.)

Effect of paclobutrazol time application on the growth and production of three rice (Oryza sativa L.) varieties

Authors

  • Heprando Barus Program Studi Agroekoteknologi, Fakultas Pertanian, USU, Medan 20155, Indonesia.
  • Ratna Program Studi Agroekoteknologi, Fakultas Pertanian, USU, Medan 20155, Indonesia.
  • Meiriani Program Studi Agroekoteknologi, Fakultas Pertanian, USU, Medan 20155, Indonesia.

DOI:

https://doi.org/10.32734/ja.v6i1.2517

Keywords:

paclobutrazol, rice, the time of application, varieties, padi, varietas, waktu aplikasi paclobutrazol

Abstract

The objective of the research was to determine the effect of paclobutrazol application on the growth
and yield of three varieties of paddy rice. The research was conducted in Tanjung Slamat village,
Medan from September to December 2016. The randomized block design was used with two
factors. The first factor were the paddy rice varieties (Ciherang, Inpari 3, Inpari 10); the second
factor were the paclobutrazol applications (without application, 5 days before panicle initiation, at
the time of panicle initiation, 5 days after the panicle initiation). The results showed that the Inpari
10 has the most number of panicles. The time of applications paclobutrazol 5 days after panicle
initiation significantly affected the shortening of the 2nd, 3rd, 4th internode. Interaction between
therice varieties and the time of applicationspaclobutrazol significantly affected the shortening of
plant height at planted.

Tujuan penelitian yakni untuk mengetahui pengaruh waktu aplikasi paclobutrazol terhadap pertumbuhan dan produksi tiga varietas padi sawah. Penelitian dilaksanakan di desa Tanjung Slamat, Medan pada September sampai Desember 2016, menggunakan Rancangan Acak Kelompok Faktorial dengan dua faktor. Faktor pertama dengan tiga varietas (Ciherang, Inpari 3, Inpari 10) dan faktor kedua adalah waktu aplikasi paclobutrazol dengan empat aplikasi, yaitu (tanpa aplikasi, aplikasi 5 hari sebelum inisiasi malai, saat inisiasi malai, 5 hari setelah inisiasi malai).Hasil penelitian menunjukkan bahwa varietas Inpari 10 memiliki jumlah malai terbanyak. Waktu aplikasi paclobutrazol 5 hari setelah inisiasi malai nyata memperpendek panjang ruas 2,3,4. Interaksi penggunaan varietas Inpari 10 dengan waktu aplikasi paclobutrazol 5 hari setelah inisiasi malainyata memperpendek tinggi tanaman.

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Published

2018-05-09