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All Journal Jurnal Ilmu Pertanian jurnal Ilmu Pertanian (Agricultural Science)
Eko Hanudin
Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta
Agriculture, Biological Sciences & Forestry

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Influences of Urea and Za Fertilizers to Soil Chemical Properties, N Uptake and Sugarcane Growth in Ultisols Seputih Mataram, Lampung Wan Tarmizi; Sri Nuryani Hidayah Utami; Eko Hanudin
Jurnal Ilmu Pertanian Vol 3, No 1 (2018): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (130.647 KB) | DOI: 10.22146/ipas.30096

Abstract

Ultisols is a less fertile soil also esay to soil leaching and erosion can cause lower efficiency of soil nutrient uptakes such as Nitrogen. The objective of this research was to find out the influences of Urea and ZA fertilizers to soil chemical properties, N uptake and sugarcane growth in Seputih Mataram Ultisols in Lampung. The experiment was conducted in a completely randomized design in 2 factors and 3 blocks for repetitions. The first factor was the sugarcane varieties; TC-09 (V1) sugarcane variety and TC-15 (V2) sugarcane variety. The second factor was fertilizer doses and combinations in 7 levels: 0 kg N/ha or without N fertilizer (N0); 100% of urea fertilizer from total of standard dosage of  SGC (151 kgs of N/ha), which is 328 kg Urea/ha (N1); 86% urea and 14% ZA or 283 kg urea/ha and 100 kg ZA/ha (N2); 75% urea and 25% ZA or 246 kg urea/ha and 100 kg ZA/ha (N3); 50% urea and 50% ZA or 164 kg ura/ha and 360 kg ZA/ha (N4); 25% urea and 75% ZA or 82 kg urea/ha and 539 kg ZA/ha (N5); and 100% ZA fertilizer of 719 kg ZA/ha (N6).  This  results showed that Urea at the dosage of 328  without Za  is the most effective and economist combination to increase the weight of sugar-cane per hectare, N uptake of plants, and N efficiency uptake of plants. Additional dosage of ZA increased soil acidity (decreased of soil pH). The study also showed recent that the weight and amount of population per hectare of TC 15 variety are higher than TC 09 variety.
Effects of Urease Inhibitor and Nitrification Inhibitor on the Nitrogen Losses, Physiological Activity, and Oil Palm Yield on Red-Yellow Podzolic Melisa Melisa; Eka Tarwaca Susila Putra; Eko Hanudin
Jurnal Ilmu Pertanian Vol 3, No 3 (2018): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (595.342 KB) | DOI: 10.22146/ipas.37291

Abstract

Nitrogen (N) fertilizer efficiency can increase by adding N-(n-butyl) thiophosphoric triamide (NBPT) and N-(n-propyl) thiophosphoric triamide (NPPT) as urease inhibitor in urea fertilizer and adding 3,4-dimethyl pyrazole phosphate (DMPP) as nitrification inhibitor in ammonium sulfate (ZA) fertilizer. The research objectives were to examine the effectiveness of urease inhibitor (NBPT and NPPT) and nitrification inhibitor (DMPP) on the physiological activity and oil palm yield on red-yellow podzolic. Field experiment was done using a Randomized Complete Block Design (RCBD) of single factor and three replications as block. The single factor was nine fertilization treatments of urea with or without urease inhibitor, and ZA with or without nitrification inhibitor. The use of urease inhibitors decreases the amount of volatilization and N loss fertilizer. The higher dose of broadcasting N fertilizer (on the same type of fertilizer) resulted in the higher amount of N loss and volatilization. All fertilization treatments did not have any significant influence to the width and the length of opening stomata, nitrate reductase activity (NRA), N concentration in oil palm leaf, Oil Extraction Rate (OER), and Free Fatty Acid (FFA). Meanwhile, The oil palms at yellow red podzolic applied with urea 195 kg/ha combined with 0.12% of NBPT-NPPT resulting in higher fresh fruit bunch productivity.
Influences of Urea and Za Fertilizers to Soil Chemical Properties, N Uptake and Sugarcane Growth in Ultisols Seputih Mataram, Lampung Wan Tarmizi; Sri Nuryani Hidayah Utami; Eko Hanudin
Jurnal Ilmu Pertanian Vol 3, No 1 (2018): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.30096

Abstract

Ultisols is a less fertile soil also esay to soil leaching and erosion can cause lower efficiency of soil nutrient uptakes such as Nitrogen. The objective of this research was to find out the influences of Urea and ZA fertilizers to soil chemical properties, N uptake and sugarcane growth in Seputih Mataram Ultisols in Lampung. The experiment was conducted in a completely randomized design in 2 factors and 3 blocks for repetitions. The first factor was the sugarcane varieties; TC-09 (V1) sugarcane variety and TC-15 (V2) sugarcane variety. The second factor was fertilizer doses and combinations in 7 levels: 0 kg N/ha or without N fertilizer (N0); 100% of urea fertilizer from total of standard dosage of  SGC (151 kgs of N/ha), which is 328 kg Urea/ha (N1); 86% urea and 14% ZA or 283 kg urea/ha and 100 kg ZA/ha (N2); 75% urea and 25% ZA or 246 kg urea/ha and 100 kg ZA/ha (N3); 50% urea and 50% ZA or 164 kg ura/ha and 360 kg ZA/ha (N4); 25% urea and 75% ZA or 82 kg urea/ha and 539 kg ZA/ha (N5); and 100% ZA fertilizer of 719 kg ZA/ha (N6).  This  results showed that Urea at the dosage of 328  without Za  is the most effective and economist combination to increase the weight of sugar-cane per hectare, N uptake of plants, and N efficiency uptake of plants. Additional dosage of ZA increased soil acidity (decreased of soil pH). The study also showed recent that the weight and amount of population per hectare of TC 15 variety are higher than TC 09 variety.
Effects of Urease Inhibitor and Nitrification Inhibitor on the Nitrogen Losses, Physiological Activity, and Oil Palm Yield on Red-Yellow Podzolic Melisa Melisa; Eka Tarwaca Susila Putra; Eko Hanudin
Jurnal Ilmu Pertanian Vol 3, No 3 (2018): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.37291

Abstract

Nitrogen (N) fertilizer efficiency can increase by adding N-(n-butyl) thiophosphoric triamide (NBPT) and N-(n-propyl) thiophosphoric triamide (NPPT) as urease inhibitor in urea fertilizer and adding 3,4-dimethyl pyrazole phosphate (DMPP) as nitrification inhibitor in ammonium sulfate (ZA) fertilizer. The research objectives were to examine the effectiveness of urease inhibitor (NBPT and NPPT) and nitrification inhibitor (DMPP) on the physiological activity and oil palm yield on red-yellow podzolic. Field experiment was done using a Randomized Complete Block Design (RCBD) of single factor and three replications as block. The single factor was nine fertilization treatments of urea with or without urease inhibitor, and ZA with or without nitrification inhibitor. The use of urease inhibitors decreases the amount of volatilization and N loss fertilizer. The higher dose of broadcasting N fertilizer (on the same type of fertilizer) resulted in the higher amount of N loss and volatilization. All fertilization treatments did not have any significant influence to the width and the length of opening stomata, nitrate reductase activity (NRA), N concentration in oil palm leaf, Oil Extraction Rate (OER), and Free Fatty Acid (FFA). Meanwhile, The oil palms at yellow red podzolic applied with urea 195 kg/ha combined with 0.12% of NBPT-NPPT resulting in higher fresh fruit bunch productivity.
Co-Authors Eka Tarwaca Susila Putra Melisa Melisa Sri Nuryani Hidayah Utami Wan Tarmizi