Jurnal Agroteknotropika, Vol 1, No 2 (2012)

Hermanuddin1, Nurdin2, Fitriah S. Jamin2

1Mahasiswa Program Studi Agroteknologi Fakultas Pertanian Universitas Negeri Gorontalo, Jl. Jend. Sudirman No. 6 Kota Gorontalo 96128

2Staf Pengajar Jurusan Agroteknologi Fakultas Pertanian Universitas Negeri Gorontalo, Jl. Jend. Sudirman No. 6 Kota Gorontalo 96128

Abstract

The aim of this study was to determine (1) the effect of N, P, and K fertilizers on the maize growth and (2) the best treatment combinations on the maize growth. The fertilizers method using minus one test in randomized block design pattern with four treatments and three replications. Dosages of each treatment were 160 kg Urea, 54 kg TSP, and 90 kg KCl. The results of this research showing that the minus one test of N, P, and K fertilizers has significant effect to plant high on 14 days after planting (DAP), 42 DAP, and 56 DAP, but has not significant effect on 28 DAP. This pattern was the same with leaf color parameters. , for leaf numbers has significant effect on 28 DAP only. The best treatment combination was N+K treatment or minus P.

Keywords: minus one test, N, P, K, fertilizer, growth, maize

https://ejurnal.ung.ac.id/index.php/JATT/article/view/903

Jurnal Agroteknotropika, Vol 1, No 2 (2012)

Febrian F. R. Aluwi1, Nurdin2, Fitriah S. Jamin2

1Mahasiswa Program Studi Agroteknologi Fakultas Pertanian Universitas Negeri Gorontalo, Jl. Jend. Sudirman No. 6 Kota Gorontalo 96128

2Staf Pengajar Jurusan Agroteknologi Fakultas Pertanian Universitas Negeri Gorontalo, Jl. Jend. Sudirman No. 6 Kota Gorontalo 96128

Abstract

The objective of this research was to study the respons of N, P, and K fertilizers and the best combination of it on the maize yields. The experimental design was following random block design that consist of 4 treatments with 3 replications, so there are 12 plot units. Dosages of each treatment were 160 kg Urea, 54 kg TSP, and 90 kg KCl. The result of this research showing that minus one test has significant effect to stem length, stem diameters, and all dry weigh, for 100 gain weigh has not significant effects. The best treatment combination was N+K treatment or minus P.

Keywords: minus one test, N, P, K, fertilizer, yield, maize

https://ejurnal.ung.ac.id/index.php/JATT/article/view/905

Jurnal Agroteknotropika, Vol 1, No 2 (2012)

Nelson Pomalingo1, Nurdin2

1Guru Besar Kependukan dan Lingkungan Hidup Fakultas Pertanian Universitas Negeri Gorontalo, Jl. Jend. Sudirman No. 6 Kota Gorontalo 96122

2Staf Pengajar Program Studi Agroteknologi Fakultas Pertanian Universitas Negeri Gorontalo, Jl. Jend. Sudirman No. 6 Kota Gorontalo 96122

Abstract

Land utility for physic buildings on Gorontalo State University campus I has shown rasing significant trends. Whereas, the land was originally rice field productively and water catchments area. Consequently, its function is reduced due to the infiltration of water hampered. This study aimed to (a) determine the amount of soil infiltration rate, and (b) determine the amount of soil permeability. The study was conducted on six months in the campus 1 Gorontalo State University areas. The equipment consists of Guelph permeameter, rol meter, water bag, stop watch, soil bor and raffia. s, the materials consist of water and soil samples. Infiltration measurements carried out in a transect from the south to the north lines. Measurements will be performed at every five meters with two measurements (0-10 cm and 10-20 cm). On existing lines any building or standing crop, the measurement will be carried out on one side to detect the effect of distance and the soil variability. Parameters observed include water infiltration, and soil permeability. The result of this research shown that infiltration rate (i) and soil permeability (Ks) at campus 1 Gorontalo State University areas classified as very rapid. s, the highest of infiltration rate and soil permeability values was to 140 m distance or point 28 and the lowest was to 170 m distance or point 34.

Keywords: Infiltration, permeability, soil, water absorption.

https://ejurnal.ung.ac.id/index.php/JATT/article/view/906

Jurnal Agroteknotropika, Vol 1, No 2 (2012)

Hariyanto Mayang1, Nurdin2, Fitriah S. Jamin2

1Mahasiswa Program Studi Agroteknologi Fakultas Pertanian Universitas Negeri Gorontalo, Jl. Jend. Sudirman No. 6 Kota Gorontalo 96128

2Staf Pengajar Jurusan Agroteknologi Fakultas Pertanian Universitas Negeri Gorontalo, Jl. Jend. Sudirman No. 6 Kota Gorontalo 96128

Abstract

This study aimed to determine the N, P, and K nutrients uptakes of maize crops in Dutohe of Bone Bolango regency. Te research was carried out in Dutohe Village of Kabila Distric of Bone Bolango regency for about 6 months. The experimental design was following randomized block design that consist of 4 treatments (P+K, N+P, N+K) with 3 replications, so there are 12 plot units. Dosages of each treatment were 160 kg Urea, 54 kg TSP, and 90 kg KCl. The result from the experiment showed that minus one test has not significant effect to N and P uptakes, but has significant effect to K uptake.

Keywords: N, P, K, fertilizer, uptake, maize

https://ejurnal.ung.ac.id/index.php/JATT/article/view/908

Jurnal Agroteknotropika, Vol 1, No 1, 2012

Nurdin

Laboratorium Agroteknologi Fakultas Pertanian Universitas Negeri Gorontalo

Jl. Jend. Sudirman No. 6 Kota Gorontalo 96128

Abstract

The Inceptisols has potential for upland agroculture, but it has problems in the field. Identification and soil characterization was need for mismanagements. Research aimed to indentify the Inceptisols characteristic derived from lakustrine as based of soil managements. Two pedons from Paguyaman of Gorontalo Province were studied both in field and in the laboratory. Twelve soil samples were analyzed for physical and chemical properties. The result of this research showed that the soil morfology of Paguyaman Inceptisols has horizon of arrangement was Ap-Bw and Ap-Bw-Br with different soil depts. Soil matrix color of two pedons dominantly of brown that indicated of B cambic horizon has formed but has not argillic horison. All pedon finded of ocrich epipedons, therefore the soil classify as Typic Eutrudept, fine loamy, smectitic, isohypertermic (PLKS) and Typic Eutrudept, fine, smectitic, isohypertermic (PLKM). Inceptisol was forming way of pedoturbation and lessivage process where done clay and C-organic movements, ground water finded in 100 cm soil depts to half time in a years and base saturation 60%. This Inceptisol has loamy of textures, acid until alkalis of soil pH, moderately of nutrient stock and cation exchange capacity moderate until high value. These carracteristics indicated that this soil has potential for food crop cultivations. Therefore, the pedon PLKM more potential than pedon PLKS.

Keywords: morphology, lacustrine, Inceptisol, soil management.

https://ejurnal.ung.ac.id/index.php/JATT/article/view/487