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