Abstract
The problem of agricultural crops cultivation today is the productivity of land that has not been optimally, where the availability of land among the main crops should be utilized maximally by planting intercrops. This research aims to determine the cropping patterns and the best of inorganic fertilizers dosage, well as the interaction of cropping patterns with inorganic fertilizer to the growth and yield of sweet corn. The research was conduted from November 2017 until January 2018 in the village of Dundangan, district of Pangkalan Kuras, Pelalawan regency and Agronomic Laboratory of Faculty of Agriculture and Animal Science, Universitas Islam Negeri Sultan Syarif Kasim Riau. This research uses Randomized Block Design (RBD) with two factors and three replications. The first factor is cropping pattern with two levels that is cropping pattern of sweet corn monoculture and cropping pattern of sweet corn with pegagan plant. The second factor is the application of inorganic fertilizers with three levels is 0%, 50% and 100% recommended dosage. The results showed that the cropping pattern of sweet corn planted with intercropping pegagan gave the same results as good with the croping pattern of sweet corn monoculture, except on the parameter of leaf age of 6 weeks after plant which yield more leaf number on monoculture cropping pattern. Inorganic fertilizers application 50% recommended dosage (Urea 250 kg/ha + TSP 175 kg/ha + KCl 150 kg/ha) increased yield weight of corn cobs weighted per plot, corn cob weight without weight per cob and weight of corn cobs without weight per plot.There is not interaction between cropping patterns and inorganic fertilizers on the growth and yield of sweet corn crops.
Highlights
The problem of agricultural crops cultivation today is the productivity of land that has not been optimally, where the availability of land among the main crops should be utilized maximally by planting intercrops
The results showed that the cropping pattern of sweet corn planted with intercropping pegagan gave the same results as good with the croping pattern of sweet corn monoculture, except on the parameter of leaf age of 6 weeks after plant which yield more leaf number on monoculture cropping pattern
Pemupukan NPK dan Sistem Tanam Ubikayu pada Tanah Ultisol Lampung
Summary
Penelitian ini dilaksanakan di Desa Dundangan, Kecamatan Pangkalan Kuras, Kabupaten Pelalawan, Provinsi Riau dan di Laboratorium Agronomi Fakultas Pertanian dan Peternakan Universitas Islam Negeri Sultan Syarif Kasim Riau. Pengamatan tinggi tanaman dilakukan dengan cara mengukur dari permukaan tanah sampai ujung tertinggi tanaman, saat tanaman berumur 2 MST sampai muncul bunga jantan pada umur 42 HST dengan interval waktu pengukuran 2 minggu sekali. Pengamatan daun terpanjang dilakukan saat tanaman jagung berumur 2 minggu setelah tanam (MST) sampai muncul bunga jantan pada umur 42 HST, dengan cara mengukur dari pangkal sampai ujung daun. Pengamatan daun terlebar dilakukan dengan cara mengukur pada bagian tengah daun saat tanaman jagung berumur 2 MST sampai muncul bunga jantan pada umur 42 HST, menggunakan penggaris dan meteran dengan interval waktu pengukuran 2 minggu sekali. Pengamatan bobot tongkol jagung berkelobot per plot dilakukan dengan cara menimbang tongkol jagung seluruh tanaman pada setiap plot. Pengamatan bobot tongkol jagung tanpa kelobot per plot dilakukan dengan cara menimbang semua tongkol jagung pada setiap plot. Pengamatan bobot basah tajuk tanaman dilakukan dengan cara menimbang bagian tanaman setelah panen, kecuali bagian akar tanaman dengan memotong ± 10 cm dari pangkal batang
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