Pengaruh Pemupukan pada Pertumbuhan dan Produksi Tiga Varietas Padi Lahan Kering

Abstract

Padi gogo merupakan budi daya padi di lahan kering. Produktivitas padi gogo masih rendah. Penelitian ini bertujuan mempelajari pengaruh pemupukan pada pertumbuhan dan produksi Tiga Varietas padi lahan kering. Penelitian dilakukan selama 8 bulan yaitu April-Desember 2019 di Kebun Percobaan IPB Sawah Baru. Rancangan yang digunakan adalah Split plot RKLT dua faktor yaitu petak utama dan anak petak. Petak utama terdiri lima taraf yaitu tanpa pupuk (P0), pupuk hayati + pupuk NPK (P1), pupuk NPK (P2), pupuk organik 5 ton ha-1 + pupuk NPK (P3), pupuk organik 5 ton ha-1 d+ pupuk hayati + NPK (P4). Anak petak tiga taraf yaitu IPB 9G (V1), Inpago 10 (V2), dan Timur (V3). Pemupukan berpengaruh nyata terhadap tinggi tanaman, Bagan Warna Daun, jumlah anakan produktif, jumlah gabah hampa dan bobot gabah per rumpun. Varietas berpengaruh nyata terhadap jumlah anakan pada 5-9 MST, jumlah anakan tidak produktif dan jumlah anakan total.

Gogo Rice is type of the rice which could be optimized cultivated in dry land. Unfortunately, the Gogo Rice’s productivity is lowest than the others. The aim of this research is to learn the effect of organic fertilizer to the growth and productivity of rice’s genotypes in dry land. The research takes place at Sawah Baru Research Field with 8 months research duration, May 2019-October 2019. The experiment was conducted in split-plot randomized complete block design with two factors, main plot and sub plot. The main plot consists 5 different fertilizers composition which are no fertilizer (P0), the organic fertilizer + NPK Fertilizer(P1), the NPK Fertilizer (P2), 5 tons ha-1 organic fertilizer + NPK Fertilizer (P3), 5 tons ha-1 organic fertilizer + composite fertilizer + and NPK (P4). The sub plot consists IPB 9G (V1), Inpago 10 (V2), and Timur (V3). The fertilization will affect the growth of the rice after 11 weeks planting with the indicator of color leaf, number of productive leaf, amount of empty rice’s grain, and the weight of collective grain. The sub plot gives significant effect on the number of productive for the period 5-9 weeks after planting, the number of unproductive leaf, and amount of total productive leaf. The best interaction between main plot and sub plot is the combination NPK Fertilizer and Organic Fertilizer.