Karlin Agustina
Fakultas Pertanian Universitas IBA

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Tanggap Fisiologi Akar Sorgum (Sorghum bicolor L. Moench) terhadap Cekaman Aluminium dan Defi siensi Fosfor di dalam Rhizotron Agustina, Karlin; Sopandie, Didy; Trikoesoemaningtyas, ,; Wirnas, Desta
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 38, No 2 (2010): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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<!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman"; mso-ansi-language:IN; mso-no-proof:yes;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> A study on physiological mechanism of sorghum to aluminum (Al) toxicity and phosphorous (P) defi  ciencies was conducted using several sorghum genotypes in rhizotron. The study was conducted in the greenhouse of the University Farm, Bogor Agricultural University from August  to October 2009.  The experiment was carried out as a Factorial experiment in a Completely Randomized Design with three replications. The fi  rst  factor was sorghum genotypes consisted of Numbu (tolerant) and B-75 (sensitive), and the second factor was combination of lime and phosphorous  fertilization consisted of: no lime-no P (R1), no lime-low P (R2), no lime-suffi  cient P (R3), lime-no P (R4), lime-low P (R5) and lime-suffi  cient P (R6). The results showed that all  variables were signifi  cantly affected by the interaction of  media and genotype, except for length of shoot and total P uptake.  Under low P and Al toxicity, sorghum variety Numbu showed a higher nutrient effi  ciency than B-75 with ability of forming greater  dry mass. The sensitive genotypes showed a higher nutrient uptake but a lower P  nutrient use efficiency under   Al toxicity and P defi ciency.  Total P uptake and P nutrient use effi  ciency were highly correlated with root growth and dry material accumulation. Keywords: sorghum, Al toxicity, P defi ciencies, P nutrient use effi ciency, P uptake
Tanggap Fisiologi Akar Sorgum (Sorghum bicolor L. Moench) terhadap Cekaman Aluminium dan Defi siensi Fosfor di dalam Rhizotron Agustina, Karlin; Sopandie, Didy; Trikoesoemaningtyas, ,; Wirnas, Desta
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 38, No 2 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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Abstract

<!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman"; mso-ansi-language:IN; mso-no-proof:yes;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> A study on physiological mechanism of sorghum to aluminum (Al) toxicity and phosphorous (P) de?? ciencies was conducted using several sorghum genotypes in rhizotron. The study was conducted in the greenhouse of the University Farm, Bogor Agricultural University from August? to October 2009.? The experiment was carried out as a Factorial experiment in a Completely Randomized Design with three replications. The ?? rst? factor was sorghum genotypes consisted of Numbu (tolerant) and B-75 (sensitive), and the second factor was combination of lime and phosphorous? fertilization consisted of: no lime-no P (R1), no lime-low P (R2), no lime-suf?? cient P (R3), lime-no P (R4), lime-low P (R5) and lime-suf?? cient P (R6). The results showed that all? variables were signi?? cantly affected by the interaction of? media and genotype, except for length of shoot and total P uptake.? Under low P and Al toxicity, sorghum variety Numbu showed a higher nutrient ef?? ciency than B-75 with ability of forming greater? dry mass. The sensitive genotypes showed a higher nutrient uptake but a lower P? nutrient use ef?ciency under?? Al toxicity and P de? ciency.? Total P uptake and P nutrient use ef?? ciency were highly correlated with root growth and dry material accumulation. Keywords: sorghum, Al toxicity, P de? ciencies, P nutrient use ef? ciency, P uptake
Efikasi Herbisida Penoksulam pada Budidaya Padi Sawah Pasang Surut untuk Intensifikasi Lahan Suboptimal Guntoro, Dwi; Agustina, Karlin; Yursida, Yursida
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
Publisher : Jurnal Lahan Suboptimal

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An experiment on herbicide Penoksulam 25.5 g/L was conducted in tidal land. The objectives of this experiment was to determine the effectiveness of herbicides in controlling weeds in lowland rice. The experiment was conducted from November 2012 to March 2013. Randomized block design (RBD) with 6 treatments and 4 replications was used. The treatments tested the herbicide Penoksulam 25.5 g/L dose of 0.60 L/ha, 0.75 L/ha, 0.94 L/ha, 1,125 L/ha, manual weeding and control. The experimental unit was a plots measuring 5 m x 5 m. The results showed that the application of penoksulam 25.5 g/L  could to control weeds of lowland rice. Dominance weeds species in tidal land were Fimbristylis littoralis, Ludwigia octovalvis and Cyperus Iria. Application of herbicide at doses 0.60 L/ha up to 1.125 L/ha caused only mild symptoms of phytotoxicity on rice. Herbicides could be used to increase low land rice production on effective dose 0.60 L/ha to 0.75 L/ha.
Tanggap Tanaman Jagung terhadap Aplikasi POC Urin Sapi dan Pupuk Anorganik di Lahan Pasang Surut Tipe Luapan C Purwanto, Ruli Joko; Agustina, Karlin; Yursida, Yursida
Jurnal Lahan Suboptimal Vol 3, No 2 (2014)
Publisher : Jurnal Lahan Suboptimal

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Abstract

The research was conducted in the village of Banyu Urip at Banyuasin district from March to June 2013. This study aimed to examine the effect of organic manure of fermented cow urine (liquid organic fertilizer/ POC) and combined with different doses of inorganic fertilizer on the growth and yield of corn land in the tidal area overflow type C. This study uses a randomized block design consisting of 5 treatment was repeated 5 times. Each treatment unit with a plot size of 1.5 m x 10 m. Treatment in this study are as follows: J0 = 100% recommended dose of inorganic fertilizer without POC cow urine; J1 = 75% recommended dose of inorganic fertilizer + POC cow urine; J2 = 50% recommended dose of inorganic fertilizer + POC cow urine; J3 = 25% recommended dose of inorganic fertilizer + POC cow urine, and J4 = 100 % POC cow urine without inorganic fertilizers. The results of fertilizer application treatments using organic and inorganic fertilizers on maize showed significant effect on all observed variables. Further test results show that the inorganic fertilizer treatment J2 = 50% of the recommended dose of cow urine + POC gives the highest yield for plant height (162.22 cm), number of leaves, corn with cornhusk weight (187.70 g), the weight of the corn without cornhusk (177.54 g), dry shelled weight (139.05 g), weight of 100 grains (30.87 g) and the number of seed rows per ear (16.60), as well as significantly different to the other treatments.
RESPON TANAMAN JAGUNG MANIS (Zea mays saccharata L.) TERHADAP PEMBERIAN PUPUK HAYATI MAJEMUK CAIR DAN PUPUK BUATAN N, P DAN K Rahayu, Arifah; Rochman, Nur; Lestari, Nurfitri Dwi; Agustina, Karlin
JURNAL AGRONIDA Vol 4, No 1 (2018)
Publisher : Universitas Djuanda Bogor

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Abstract

This study was aimed at assessing the response of sweetcorn plant on various dosages ofbiofertilizer and synthetic (N, P and K) fertilizer. The study was done in May to September 2014 atthe Agrotechnology Trial Farm of Djuanda University. A factorial completely randomized designwas used. The first and second factor were biofertilizer and synthetic fertilizer dosage (0%, 50 %,100% and 150% R/Recommendation). Results showed that adding biofertilizer and syntheticfertilizer until 100% R increased leaf area, length and weight of ear, root and biomass weight andTSS (total soluble solids) content. At various level of biofertilizer, increasing synthetic fertilizerdosages until 100% R could improve plant height, leaves and root number, stem girth, ear lengthand accelerate growing of staminate and pistillate. Meanwhile at various degree of syntheticfertilizer dosage, raising bofertilizer dosage until 150% R tend to higher plant height, and until100% R caused stem girth and root length greater, but delayed staminate and pistillate growth.Application of biofertlizer and synthetic fertilizer tend to increasing pH and cation exchangecapacity of growth medium.Keywords: weight of ear, pH, cation enxchange capacity
Response of Sweet Corn Plants (Zea mays saccharata L.) Affected the Aplication of Biological Liquid Compound Fertilizer and Synthetic Fertilizer N, P and K Rahayu, Arifah; Rochman, Nur; Lestari, Nurfitri Dwi; Agustina, Karlin
JURNAL AGRONIDA Vol 4, No 1 (2018)
Publisher : Universitas Djuanda Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (463.723 KB)

Abstract

This study was aimed at assessing the response of sweetcorn plant on various dosages ofbiofertilizer and synthetic (N, P and K) fertilizer. The study was done in May to September 2014 atthe Agrotechnology Trial Farm of Djuanda University. A factorial completely randomized designwas used. The first and second factor were biofertilizer and synthetic fertilizer dosage (0%, 50 %,100% and 150% R/Recommendation). Results showed that adding biofertilizer and syntheticfertilizer until 100% R increased leaf area, length and weight of ear, root and biomass weight andTSS (total soluble solids) content. At various level of biofertilizer, increasing synthetic fertilizerdosages until 100% R could improve plant height, leaves and root number, stem girth, ear lengthand accelerate growing of staminate and pistillate. Meanwhile at various degree of syntheticfertilizer dosage, raising bofertilizer dosage until 150% R tend to higher plant height, and until100% R caused stem girth and root length greater, but delayed staminate and pistillate growth.Application of biofertlizer and synthetic fertilizer tend to increasing pH and cation exchangecapacity of growth medium.Keywords: weight of ear, pH, cation enxchange capacity