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

Conference Paper: Proceeding International Maize Conference in Gorontalo-Indonesia 2013

Bahtiar2, J. Husain1, H. Kasim2, and Nurdin3

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

 2Agricultural Extension Officer at Technological Examination and Implementation Office, Kalasey Manado, Indonesia

3Research Scientist at Gorontalo State Universitty

Abstract

Agropolitan program, leads by increasing maize production, has been promoted in Gorontalo. Such effort requires, among others, study on spatial land suitability. The objectives of this study were to determine land suitability for maize in Limboto Basin and to spatially present the quality of land units to the plant (maize) requirements. Farmer perception on maize cultivation is also generated. Standard field and laboratory procedures have been performed to characterize land suitability for maize. Besides, geographical information system has been employed to delineated the spatial availability. Among 35,594 ha evaluated area in Limboto Basin Gorontalo, 21,233 ha is categorized as fairly suitable for maize while 14,361 ha is classified as marginally suitable for maize. Majority of the observed farmers were in favor to cultivate maize on their farmland.

Keywords: farmer perception, land suitability, maize cultivation.

https://s.id/21ZhW

Journal of Tropical Soils, Vol. 18, No. 1, 2013: 25-32

Nurdin, Fauzan Zakaria

Agrotechnology Department, Faculty of Agriculture, Gorontalo State University

Jl. Jend. Sudirman No.6 Kota Gorontalo 96122, Indonesia

Abstract

The research aimed to study effect the application of river sand (RS), coconut coir (CC), and banana coir (BC) on growth and yield of rice (Oryza sativa L.) in Ustic Endoaquert. The research was carried out in a green house using 3 × 3 × 3 factorial design. The RS factor consists of three treatment levels which were 0% RS, 25% RS, and 50% RS. Meanwhile, the CC and BC consist of three treatment levels, where each level were 0 Mg ha-1, 10 Mg ha-1 and 20 Mg ha-1. The results showed that RS, CC and BC applications did not have significant effect on plant height. On the other hand, all ameliorant applications had significantly increase leaf length and the highest percentage increasing was in BC (13.49%). The leaf numbers and tiller numbers had relatively similar pattern, except BC that had significantly increased leaf numbers by 77.69% and amount of tiller numbers by 49.45%. Furthermore, for yield components, RS, CC and BC applications had significant increased panicle numbers by 37.76%. It was only RS and BC that increased panicle lenght and the best increasing of 26.82% on RS. Meanwhile, the BC application only increased the rice grain numbers.

Keywords: Banana coir, coconut coir, rice plant, river sand, Vertisols

Terakreditasi Dikti: http://dx.doi.org/10.5400/jts.2013.18.1.25

Conference Paper: SEMINAR NASIONAL KIMIA & PENDIDIKAN KIMIA UNG 2014, Gorontalo, Indonesia, Volume: 1

Nurdin

Fakultas Pertanian Universitas Negeri Gorontalo

Abstract

This study aims to determine the soil mineralogy and soil chemical properties at two rainfed soil pedons in Sidomukti, Gorontalo. This study was conducted at 2 pedon of rainfed paddy soils from Sidomukti Village Mootilango District of Gorontalo Regency. Implementation of the field based on the location of the example profile (pedon). The soil profile is made and sampled in accordance with the principles of soil surveying. Result of this research showed that Pedon PNS1 had easily weathered minerals (albite, sanidin and green hornblende) more than pedon PNS2. While the clay mineral content of pedon PNS1 dominated by smectite and kaolinite. Both pedon generally pH slightly acid to slightly alkaline and negatively charged clean, C-organic content is very low, bases-dd predominantly calcium (Ca-dd) with the sequence: Ca> Mg> K> Na, cation exchange capacity and base saturation dominant high and very high. However, the pedon PNS1 was better than pedon PNS2 of soil fertility.

Keywords: Mineralogy, chemistry, properties, pedon, soil.

https://s.id/21Zh0