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 : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (245.451 KB) | DOI: 10.24831/jai.v38i2.1791

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
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 : Journal of Suboptimal Lands Vol 3, No 2 (2014)
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (254.141 KB) | DOI: 10.33230/JLSO.3.2.2014.118

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.
DIVERSITAS GULMA PADA BUDIDAYA PADI DAN JAGUNG DI LAHAN PASANG SURUT DESA BANYU URIP KECAMATAN TANJUNG LAGO Agustina, Karlin; Yursida, Yursida
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 4, No 1 (2015): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (459.672 KB) | DOI: 10.33230/JLSO.4.1.2015.138

Abstract

The experiment about Diversity of weeds on rice and maize cultivation in the tidal-land Banyu Urip village subdistrict Tanjung Lago was conducted from November 2013 until Desember 2013. The purpose of the experiment is determinate the dominant weed species in cultivation of rice and maize in the tidal-land, to evaluate the results of weed control, and can be a basic weed control recommendations. The method used is squared method. The results showed that the dominant weeds in rice crops with highests sum dominance ratio (SDR) is: Ludwigia octovalvis, Fymbristilis littoralis, Alternanthera philoxeroides and Cyperus kylingia. Dominant species in maize planting is: Alternanthera phyloxeroides, Paspalum conjugatum, Borreria alata, and Euphorbia hirta. The use of a single active ingredient ?isopropylamine ? glifosat? in weed control in the tidal-land have not been able to effectively control weeds both broadleaf weeds, puzzles or grass. Mechanical methods of weed control on weeds with stoloniferous will increasingly dominant weed.
EFIKASI HERBISIDA PENOKSULAM PADA BUDIDAYA PADI SAWAH PASANG SURUT UNTUK INTENSIFIKASI LAHAN SUBOPTIMAL Guntoro, Dwi; Agustina, Karlin; Yursida, Yursida
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 2, No 2 (2013)
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (428.952 KB) | DOI: 10.33230/JLSO.2.2.2013.54

Abstract

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (19.733 KB) | DOI: 10.30997/jag.v4i1.1557

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 | Download Original | Original Source | Check in Google Scholar | Full PDF (463.723 KB) | DOI: 10.30997/jag.v4i1.1526

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