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Jurnal Agrotropika

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Published by Universitas Lampung

ISSN : 02167662 EISSN : 27457737 DOI : 10.23960

Core Subject : Science, Agriculture,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Scientific article dealing with broad aspects of tropical agronomy including crop production, horticulture, plant pests and diseases, post-harvest, sustainable agriculture, soil science, climatology, ecology, biodiversity, and ethno-agronomy.

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman

Articles 252 Documents

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JAMUR MIKORIZA ARBUSKULA PADA LAHAN TANAMAN JATI BERTUMPANGSARI TEBU Corryanti Corryanti
JURNAL AGROTROPIKA Vol 16, No 1 (2011): Agrotropika Vol.16 No.1 2011
Publisher : Universitas Lampung

This research aimed to investigate the diversity of arbuscular mycorrhizae fungi in teak plantation intercropped with sugarcane. The research was conducted at teak plantation of BKPH Tangen, Surakarta, Center of Java. Soil samples were composite, collected from 30 cm depth around teak trees, of three classes of teak growth i.e. low (6.8 m tall, 20 cm girth), medium (9.2 m tall, 2.25 cm girth), and high (11.6 m tall, 33.2 cm girth). The results showed that both the diversity and spore abundance of mycorrhiza fungi was low. We found 5 types of mycorrhizae fungi which 2 types belong to Gigaspora and 3 types belong to Glomus. Key words: teak, sugarcane, multiple cropping, mycorrhizae, diversity, abundance.

PENGARUH PENAMBAHAN INDOLE ACETIC ACID (IAA) PADA PELAPIS KITOSAN TERHADAP MUTU DAN MASA SIMPAN BUAH JAMBU BIJI (Psidium guajava L.) ‘CRYSTAL’ Soesiladi E. Widodo; Zulferiyenni Zulferiyenni; Icha Maretha
JURNAL AGROTROPIKA Vol 17, No 1 (2012): Agrotropika Vol.17 No.1 2012
Publisher : Universitas Lampung

The research was aimmed at (1) studying the effects of the addition of IAA into chitosan coating on the fruit qualities and shelf-life of guava ‘Crystal’, and obtaining the best concentration of IAA added into the chitosan coating to maintain the fruit qualities and prolong the shelf-life of guava ‘Crystal’. The treatments were arranged in a factorial 3 x 3 in a completely randomized design with three replications. The first factors were fruits without any treatment but water (K0), acetic acid 0.5% (K1), and 2.5% chitosan (K2). The second factors were the concentrations of IAA in three levels: 0 (A0), 5 (A1), and 10 μM (A2). The results showed that (1) the chitosan coatings of 2.5% concentra-tion was effective in prolonging the fruit self-life of guava ‘Crystal’ 2.56 and 6.45 days longer compared to the control and acetic acid 0.5%, (2) IAA application did not prolong the fruit shelf-life, and did not decrease the fruit qualities, and (3) the addition of 0.5% acetic acid as a solvent in 2.5% chitosan did not cause a bad affect, but soaking in 0.5% acetic acid as a main solution adversely affected the fruit qualities and shelf-life of guava ‘Crystal’ Key words: guava, IAA, chitosan, browning, quality

KINERJA BULK-MODIFIED DAN PEDIGREE UNTUK KETAHANAN KEDELAI TERHADAP HAMA PENGHISAP POLONG Riptortus linearis Fabricius (HEMIPTERA: ALYDIDAE) Sahiral Yakub; Azis Purwantoro; Nasrullah Nasrullah; Asadi Asadi
JURNAL AGROTROPIKA Vol 18, No 1 (2013): Agrotropika Vol.18 No.1 2013
Publisher : Universitas Lampung

Pod sucker bug, Riptortus linearis Fabricius. (Hemiptera: Alydidae) is an important insect pest on soybean in Indonesia that caused significantly yield loss. Growing the resistant soybean is a simple method, efficient, and friendly environment to control the insect pest in the field. The aim of the research is to know the performance selection method (bulk-modified and pedigree) for soybean resistance against pod sucker bug. The research was conducted at BB Biogen, Bogor from June up to October 2010 and November 2010 up to March 2011. The genetic material consisted of progenies F3 and F4 population from ‘Tambora’ × B4400 hybridization. A pairs of Riptortus linearis each 20 plant was infested at pod formation up to pod filling period (R3-R4) in each generation. The numbers of pod and seed damage level and soybean yield were used as a resistance indicator against pod sucker bug. The Result showed that F3 and F4 population showed a high phenotypic and genotypic variance and high heritability in a broad sense. Both F3 selected and F4 selected population showed the percentage numbers of pod and seed damage were lower than 20% (resistant), but the yield still lower than both parents. Bulk-modified and pedigree performance were significantly different via realized selection response on soybean characters estimates. Pedigree performance show higher response selection estimates than bulk-modified on pod and seed damage level, but not on yield. Keyword : selection method, response selection, resistant soybean

KAJIAN EFIKASI HERBISIDA AMETRIN DAN KOMBINASI AMETRIN + (2,4-D ATAU METIL METSULFURON) TERHADAP PERTUMBUHAN GULMA PADA BUDIDAYA TANAMAN TEBU LAHAN KERING Herry Susanto; Rusdi Evizal; Sugiatno Sugiatno
JURNAL AGROTROPIKA Vol 19, No 1 (2020): Jurnal Agrotropika Vol 19 No 1, Mei 2020
Publisher : Universitas Lampung

Weed control in dry land cane cultivation is usually done chemically with the pre-emergence herbicides spraying since planting until to one week and post-emergence for about 2.5 months. Pre-emergence herbicides are usually used to control weeds when planting until to 2 month periode and 2.5 months post-emergence herbicides to prepare a second fertilization so that sugar cane growth is not disturbed by weeds. The treatment consisted of: ametrine 80 % herbicide at doses of 0.8, 1.2, 1.6, 2.0; and 2.4 kg / ha, ametrine 1.6 kg/ha+2,4-D 865g l/ha,ametrine 1.6 kg/ha + metil metsulfuron 8 g/ha, 2 times manual weeding treatment, and control. The experimental design used was randomized block design with 4 replications. The results showed that the herbicides ametrine and ametrine + 2,4-D or metsulfuron methyl were able to suppress the total weeds growth in the cultivation of dry land sugarcane. Ametrine and ametrine + 2,4-D or metsulfuron methyl all doses are able to suppress weeds Borreria alata, Rhicardia brasiliensis, and Digitaria longifolia; except at doses of ametrine 0.8 and 1.2 kg/ha against Borreria alata at 8 and 12 weeks after application. Whereas weeds that are not controlled with all treatments, namely Brachiaria sp., Cyperus rotundus, and Cleome rutidosperma. The growth of plant cane is not suppressed by the treatment of herbicide ametrine and ametrine + 2,4-D or metsulfuron methyl and as well as manual weeding. The treatment of herbicide ametrine and ametrine + 2,4-D or metsulfuron methyl does not cause toxic in plant cane cultivation. Keywords: Ametrine, 2,4-D, metsulfuron methy, plant cane, weeds.

KORELASI, KERAGAMAN GENETIK, DAN HERITABILITAS KARAKTER AGRONOMI KACANG PANJANG POPULASI F3 KETURUNAN PERSILANGAN TESTA HITAM X LURIK Nyimas Sa’diyah; Tjipto Roso Basoeki; Aprilia Eka Putri; Devi Maretha; Setyo Dwi Utomo
JURNAL AGROTROPIKA Vol 14, No 1 (2009): Jurnal Agrotropika V14 No 1 2009
Publisher : Universitas Lampung

The objective of this study was to estimate correlation, variances, and heritability of agronomic characters of yardlong-bean F3 population derived from crosses between black and striped-black testa. An F3 population consisted 90 plants along with the two parents (20 plants per parent) were planted in unreplicated trial in Hajimena, Rajabasa, Bandar Lampung in 2008. Variables observed included flowering date, fresh-harvesting date, harvesting date, the number of flower stalks per plants,the number of pod per plant, the average number of locules per pod, the total number of seeds per plant, and the weight of 100 seeds. The results indicated that the estimate of genotypic and phenotypic variances and broad-sense heritability were high for all variables observed. The estimates were significant for the correlation between dry-seed weight per plant and the following variables: number of flower stalks per plant, number of pods per plant, the average number of loculs per pod, and the number of seeds per plants. Based on consumer demand and solid fresh peas can be obtained on the genotypes of the number 6, 7, 9, 11, 14, 19, 22, 28, 66, and 67. There are no pods which exceeds 50 cm in length.Keywords: correlation, heritability, variances, Vigna sinensis, yard-long beans

PENGARUH DOSIS PUPUK NITROGEN, FOSFOR, DAN KALIUM TERHADAP PRODUKSI BENIH PADI VARIETAS MAYANG PADA TIGA LOKASI DI LAMPUNG UTARA Ridwansyah, Budi; Basoeki, Tjipto R.; Timotiwu, Paul B.; Agustiansyah, Agustiansyah
JURNAL AGROTROPIKA Vol 15, No 2 (2010): Agrotropika Vol.15 No.2 2010
Publisher : JURNAL AGROTROPIKA

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Fertilizer is one of the ways to improve cultural techniques for producing high quality of seed with high early vigor. The objectitive of N, P,and K nutrient in balanced quantity can improve productivity and quality of seed rice. His research was to know response of three doses of N, P, and K on growth, production, and quality of seed rice of Mayang variety on three locations on North Lampung, and see interaction of both factors. Treatment arrangement was factorial by randomized complete block design with three replications. Sub factor is fertilizer (P); there are low fertilizer dose (P1) is farmer fertilizer dose consist 200 kg/ha urea and 50 kg NPK/ha; middle fertilizer dose (P2) is recommended government dose consist 250 kg/ha urea, 100 kg Sp 18/ha, and 100 kg/ha KCl; and high dose (P3) is recommended dose for seed production consist 300 kg/ha urea, 150 kg/ha SP 18, and 150 kg/ha KCl. Mains factor is location, there are Ciamis-Sungkai Utara, Wonomarto-Kotabumi Utara, and Semuli Jaya-Abung Semuli. Homogenity of varian each treatment analyzed by Bartlett test and to see eaded model by Tukey test. If all assumption are completely, data will be continue analyzed with BNJ test at level 5%. Result of research showed that high dose fertilizer is can give growth and seed production better than low dose fertilizer, but nonsignificant with middle dose. The best location for seed production is Semuli and than Wonomarto, and Ciamis in the last position, but nothing interaction between different of dose and location.Key words: rice, Mayang viability, fertilizer

FUNGI MIKORIZA ARBUSKULA ASAL PANGALENGAN JAWA BARAT SEBAGAI AGENS HAYATI PENGENDALI NEMATODA SISTA KENTANG Nurbaity, Anne; Sunarto, Toto; Hindersah, Reginawanti; Solihin, Amir; Kalay, Marthin
JURNAL AGROTROPIKA Vol 16, No 2 (2011): Agrotropika Vol.16 No.2 2011
Publisher : JURNAL AGROTROPIKA

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Potato cyst nematode (PCN) is known as organism that could suppress the growth of potatoes and it has been found in West Java. Controlling of PCN by the use of chemical agents has been reduced, hence the use of biological agents such as soil fungi is one of the alternatives. Arbuscular mycorrhizal fungi (AMF) has a potential to be used as a controlling agents. However, the information about it?s effect on nematode, especially in Indonesia is limited. The objectives of this study were to isolate the indigenous AMF from potatoes plantation in a high land at Pangalengan district, West Java, to be used as an agents for controlling nematodes. AMF isolates were cultured and propagated to be used in the test of AMF effectiveness in controlling PCN in a glasshouse. Results showed that AMF at the rate of 150 spores/pot reduced the PCN parameters in term of numbers of juveniles II, fe-males and cysts. The mechanisms of AMF in reducing PCN activities was more likely because of the pro-duction of antifungi isoflavonoid that increased as increasing the rate of AMF spores. The experiment in general showed the successful results in explaining the potential use of AMF as bio-control agents of PCN. Keywords: Arbuscular Mycorrhizal Fungi, Potato Cyst Nematode

UJI TOLERANSI GALUR KACANG TANAH HASIL IRADIASI SINAR GAMMA TERHADAP LARUTAN POLIETILENA GLIKOL A. Farid Hemon; Syarifinnur Syarifinnur; Lestari Ujianto; Sumarjan Sumarjan
JURNAL AGROTROPIKA Vol 17, No 2 (2012): Agrotropika Vol.17 No.2 2012
Publisher : Universitas Lampung

The objective of this research was to evalu-ate the tolerance of peanut lines generated from Gamma ray iradiation against polyethylene glycol (PEG) solution stress. The peanut lines seeds of mutan M3 generation were used in this experiment. Peanut plants of cv. “Local Bima” were also tested as control plant. The mutan and control peanut plants were planted on rice hush charcoal medium. The peanut plants that 15 to 50 days old were watered with PEG 15% solution (0.41 Mpa osmotic potential = drought stress). Identification of tolerant peanut lines on PEG stress were calculated with using drought sensitivity index value (S) on observed parameter and proline content. Results of the experiment showed that peanut line G300 was classified as moderate tolerant to PEG solution stress with the highest proline content. Keywords : peanut lines, gamma ray, mutan, polyethylene glycol

APLIKASI KITOSAN UNTUK PENGENDALIAN PENYAKIT BUSUK BUAH KAKAO (Phytophthora megakarya L.) Septiana Septiana; Suskandini Ratih Dirmawati; Rusdi Evizal
JURNAL AGROTROPIKA Vol 19, No 1 (2020): Jurnal Agrotropika Vol 19 No 1, Mei 2020
Publisher : Universitas Lampung

Research on the effect of chitosan concentration on the severity of cocoa pod rot in three different sizes of cocoa pods carried out at the smallholder cocoa plantations in Taman Endah Village, East Lampung Regency using local hybrid cocoa. Data analysis was using analysis of variance (ANOVA) and continued with Duncan's multiple range test at 5% level. The results showed that the severity of fruit rot at cocoa pod sprayed with copper oxide 56% and chitosan 0.6% was lower than the severity of fruit rot with application of chitosan 0.2%, 0.4%, and 0.8% and control..Keywords: application, chitosan, cocoa pod rot disease

PENGARUH UMUR BATANG BAWAH DAN TINGKAT PENAUNGAN PADA PENYAMBUNGAN BIBIT JARAK PAGAR (JATROPHA CURCAS L.) Sugiatno, Sugiatno; Hamim, Herawati
JURNAL AGROTROPIKA Vol 14, No 1 (2009): Jurnal Agrotropika V14 No 1 2009
Publisher : JURNAL AGROTROPIKA

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To get high quality physic nut seedling one of effort is with vegetative propagation especially with grafting. The objective of this study was to evaluate the effect the maturity of rootstocks and shading rate on the effectiveness of grafting and the growth of seedling of Jatropka. The experiment was conducted in Labuhan Dalam, Subdistrict Tanjung Seneng, the City of Bandar Lampung from January-June 2008. Is a factorial experiment (3X4) with split plot design, shading degrees as main plot consisted without shading, light shading, moderate shading, and heavy shading. Root stock age as subplot consisted 6, 8, and 10 weeks after transplanting. The treatments were consisted 3 replication and each experiment unit consisted 10 seedlings. The result shows that root stock age 8 and 10 weeks produces physic nut seedling growth better than root stock age 6 week. Physic nut seedling without shading and light shading (1 layer paranet) grow better than with moderate shading (2 layers paranet) and heavy shading (3 layers paranet);Key words: Physic nut, root stock age, shading

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Jurusan Agronomi dan Hortikultura, Gedung C Fakultas Pertanian, Universitas Lampung. Jln. Sumantri Brojonegoro No 1 Gedung Meneng, Bandar Lampung 35145, Indonesia

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Home Page

OAI Link

Editorial Team

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Reviewer

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Contact Name Rusdi Evizal

Contact Email agrotropika@fp.unila.ac.id

Phone +6281540027642

Journal Mail Official agrotropika@fp.unila.ac.id

Editorial Address Jurusan Agronomi dan Hortikultura, Gedung C Fakultas Pertanian, Universitas Lampung. Jln. Sumantri Brojonegoro No 1 Gedung Meneng, Bandar Lampung 35145, Indonesia

Location Kota bandar lampung, Lampung INDONESIA

Abstract

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Contact Name
Rusdi Evizal

Contact Email
agrotropika@fp.unila.ac.id

Phone
+6281540027642

Journal Mail Official
agrotropika@fp.unila.ac.id

Editorial Address
Jurusan Agronomi dan Hortikultura, Gedung C Fakultas Pertanian, Universitas Lampung. Jln. Sumantri Brojonegoro No 1 Gedung Meneng, Bandar Lampung 35145, Indonesia

Location
Kota bandar lampung,

Lampung

INDONESIA