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

Conference Paper: International Maize ConferenceAt: Gorontalo Indonesia, 2012

Jailani Husain1, Bahtiar2, Nurdin3

1Research Scientist, Soil Science Department Faculty of Agriculture Sam Ratulangi University, Manado 95115 Indonesia

2Research Scientist. Faculty of Agriculture Gorontalo State University. Gorontalo Indonesia

3Researcher and Agricultural Extension Officer at The Assessment Institute for Agricultural Technology (AIAT), Sulawesi Utara

Abstract

In Indonesia, convertion of fertile agricultural lands into, among others, industrial and residential areas has triggered more intensive and extensive exploitation of marginal-and deforested-sloping lands. In Gorontalo province, about one-fifth of sloping forested area has been deforested and converted to upland agriculture or abandoned as schrubs, bushes, and bare lands. This study demonstrates the benefit of using terrace and manure in sustaining maize yield and land productivity as well as reducing soil erosion of cultivated sloping land. It was revealed that maize height, leaf number, kernel number and weight at terrace plot were higher than that of control. Broader variability's of the observed vegetative and generative variables were also identified at terrace plot.

Keywords: maize yield, sloping agricultural lands, terraces.

https://s.id/21Ziy

Jurnal Perkebunan & Lahan Tropika, Vol. 2, No. 1 Juni 2012

Nurdin

Fakultas Pertanian, Universitas Negeri Gorontalo, Gorontalo

Abstract

The aimed of this research was to determining of upland suitability for maize commodity development and its limiting factors based on land quality. This research conducted at three month in Dulamayo garden farming of Gorontalo State University. Assessments of land suitability classes using the framework of land evaluation and parametric approach with root square land index as methods. The result of this research showed that the land suitability classes showed that land utilization type (LUT) for Local Maize of patterns A (none fertilizing) + B (national fertilizing dosage) were dominantly of moderately suitable with nutrient availability as limiting factors (S2na), while for pattern C (prescription fertilizing dosage) was very suitable but any small amount of nutrient availability as limiting factors (S1na). The LUT Composite Maize to pattern A was marginally suitable with nutrient availability as limiting factors (S3na), pattern B same as LUT Local Maize limiting factors, but pattern C with very suitable classes but differences of limiting factors (S1wa). For LUT Hybrids Maize dominantly of marginally suitable with water availability as limiting factors (S3wa) to pattern A+B, but pattern C dominantly of moderately suitable with water availability as limiting factors (S2wa).

Keywords: Suitability class, parametric, upland, maize.

https://dx.doi.org/10.26418/plt.v2i1.1961