EFEK SISA DAN TAMBAHAN TITONIA TERHADAP  SIFAT KIMIA ULTISOL DAN HASIL TANAMAN jagung PADA MUSIM TANAM KE TIGA

Hakim, Nurhajati; Darfis, Irwan; Arfania, Lia

doi:10.25077/js.4.1.29-39.2007

Cited by 2 publications

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“…Increasing pH value as increasing SOM also reported by [11], in which soil pH increased from 5.86 to 6.03 (in 2007) and from 5.43 to 6.20 (in 2008) by addition of 10 ton manure/ha on Alfisols ( (Oxic tropuldalf) ) in Nigeria. Reference [12] also found that increasing soil pH as OM added to Reiff loam soil (coarse-loamy, mixed, nonacid, thermic Mollic Xerofluvents) and Yolo silt loam soil (finesilty, mixed, nonacid, thermic Typic Xerorthents) in California, USA. During their research, soil pH value consistently increased for 8 years (1988-1996) research.…”

Section: A Soil Cemical Characteristicsmentioning

confidence: 99%

Chemical Characteristics of Soils Based on Toposequence under Wet Tropical Area in Bukit Sarasah Padang

Yulnafatmawita

Hermansah

2016

International Journal on Advanced Science, Engineering and Information Technology

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Topography is a factor affecting soil characteristics. Chemical characteristic of a soil is a factor determining the productivity of the land. A research was conducted in Bukit Sarasah Padang, an area receiving > 5000 mm rainfall annually. The purpose of this research was to determine the chemical characteristics of soils at sequence topography in hill-slope of Bukit Sarasah. Soils were sampled at 3 different altitudes in the research area from 315 m-515 m asl with 100 m interval. At each location, soil samples were taken from two depths (0-20 cm and 30-50 cm) for soil chemical characteristics (pH, CEC, organic-C, N-total, C/N, Ca-, Mg-, K-, Na-, Al-, and H-exchangeable). Based on the data resulted, it was found that there was a tendency of decreasing soil organic matter (SOC) content by increasing location from 315 to 515 m asl as well as from the top 0-20 cm to 30-50 cm soil depth. The same tendency was also found for the CEC, pH, N-total, and C/N ratio of the soil. On the other hand, exchangeable-Al and-H tended to increase by increasing elevation in Bukit Sarasah. There was no significant difference found for the concentration of exchageable cations among the elevations and between the depths. The soil chemical characteristics on the top 20 cm were generally better than those on 30-50 cm soil depth, however, different elevation did not gave significant difference of the concentration.

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Section: A Soil Cemical Characteristicsmentioning

confidence: 99%

Chemical Characteristics of Soils Based on Toposequence under Wet Tropical Area in Bukit Sarasah Padang

Yulnafatmawita

Hermansah

2016

International Journal on Advanced Science, Engineering and Information Technology

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“…From a series of researches using Tithonia as organic fertilizer to improve soil fertility showed that 136 N Hakim et al: Organic Fertilizer to Control Iron and Commercial Fertilizer Tithonia was able to improve soil fertility by reducing acid content and Al saturation of soil, increased soil pH, soil organic mater content, and soil nutrient of N, P, K, Ca, and Mg levels (Hakim and Agustian 2003;Hakim et al 2006). In addition, Gusnidar (2007) noted that decomposition of Tithonia releases the nutrients of N, P, K, and others and also produce organic acids such as acetic, propionic, salicylic, citric, succinic, and tartaric acid.…”

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confidence: 99%

Application of Organic Fertilizer Tithonia Plus to Control Iron Toxicity and Reduce Commercial Fertilizer Application on New Paddy Field

Hakim

Agustian

Mala³

2012

j Trop. Soils

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Ferrous toxicity is a one of the problems most often found in lowland rice systems in tropical and sub-tropical regionespecially in new paddy field (NPF) on Ultisols and Oxisols. Flooding during rice growth creates a chemicallyreduced state in soils causing reduction of insoluble (Fe3+) to soluble (Fe2+) form even at excessive level. ExcessiveFe2+ uptake is eventually the main cause of iron toxicity. The purpose of this study was to find an appropriateformulation of organic fertilizer Tithonia plus (OFTP) to control the iron toxicity, reduce the application of commercialfertilizers (CF) and increase rice production at various ages of NPF. The field experiment was conducted in farmerfields in Sitiung, Koto Baru sub-district, Dharmasraya district of West Sumatra province. Experimental design usedwas a factorial 2 x 6 in a split plot design. The main plot (A), the age of the opening of NPF were: 0 year;and 2 years;Subplot (B) a formulation of OFTP were: 2 Mg Tithonia ha-1 + 75% of CF; 2 Mg Tithonia ha-1 + 5 Mg rice strawha-1 + 50% of CF; 4 Mg Tithonia ha-1 + 25% of CF and three treatmens without Tithonia i.e. 5 Mg rice straw ha-1 +75% of CF; 2 Mg animal cow manure ha-1 + 75% of CF, and 100% of CF. Liming with 500 kg CaCO3 ha-1were appliedfor all treatments. The results showed the use of OFTP increased the nutrients availability such as N, P, and K onNPF and control the iron toxicity. The appropriate formulation of OFTP to control the iron toxicity and reduced theapplication of chemical fertilizer for higher rice production at NPF were two options: (1) 2 Mg of Tithonia ha-1 + 5 Mgof rice straw ha-1 + 50% of commercial fertilizers; and (2) 2 Mg of Tithonia ha-1 + 75% of commercial fertilizers. In thiscase the reducing of commercial fertilizers application were 50% and 25%, respectively.[How to Cite: Hakim N, Agustian and Y Mala. 2012. Application of Organic Fertilizer Tithonia Plus to Control Iron Toxicity and Reduce Commercial Fertilizer Application on New Paddy Field. J Trop Soils 17: 135-142. Doi: 10.5400/jts.2012.17.2.135][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.2.135]

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EFEK SISA DAN TAMBAHAN TITONIA TERHADAP SIFAT KIMIA ULTISOL DAN HASIL TANAMAN jagung PADA MUSIM TANAM KE TIGA

Cited by 2 publications

References 0 publications

Chemical Characteristics of Soils Based on Toposequence under Wet Tropical Area in Bukit Sarasah Padang

Chemical Characteristics of Soils Based on Toposequence under Wet Tropical Area in Bukit Sarasah Padang

Application of Organic Fertilizer Tithonia Plus to Control Iron Toxicity and Reduce Commercial Fertilizer Application on New Paddy Field

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