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INDONESIA
Jurnal Ilmu-Ilmu Pertanian Indonesia
Published by Universitas Bengkulu
ISSN : 14110067     EISSN : 26849593     DOI : https://doi.org/10.31186/jipi
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Ilmu-Ilmu Pertanian Indonesia (JIPI) is a scientific journal that publishes research results related to resource issues and agricultural productivity widely, including Agroecotechnology, Plant Breeding, Soil Science, Plant Protection, and Agricultural Ecology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 208 Documents
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PENGARUH UKURAN BIJI TERHADAP KEMAMPUAN TANAMAN TUMBUH KEMBALI SETELAH RUSAK AKIBAT HERBIVORI Erniwati Erniwati
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 2 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.2.156-164

Abstract

The objective of the study is to investigate the effect of seed size in the resprouting ability of seedling after being damaged and whether it correlates with the reserve effect. We grew the seedlings of two species of oak, namely Quercus robur and Quercus  petraea from different seed size, in a greenhouse. The seedlings were harvested at different stages; after emergence, at the first shoot fully developed, and after the seedling had re- grown after the initial shoot was clipped. The result showed that: firstly, at the time of full seedling development, large seeds translocated less percentage of reserve from the seed to seedling. After clipping, the seedlings from large seeds translocated additional resources to the seedling. Secondly, although the larger seed has the larger biomass to re-sprout, the total mass invested in re-sprouting proportional with seedling size. We concluded that the seedlings of larger seeds re-sprout better than those of the smaller seeds. However, we did not find the improved performances correlating with the Reserve Effect Theory 
PENGGUNAAN CAMPURAN CASSAVA DAN TEPUNG INDIGOFERA SEBAGAI PENGGANTI JAGUNG DALAM RANSUM TERHADAP PERFORMANS PUYUH PETELUR PADA UMUR 1 – 5 MINGGU Johan Setianto; Edi Soetrisno; Suharyanto Suharyanto; Tamzan Tamzan
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 7, No 2 (2005)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.7.2.76-81

Abstract

The study was conducted to investigate the effects of cassava and indigofera leaf meals as corn’s substitution on 1 – 5 weeks old quail’s performance. Two hundred and forty of 1 week-old quail were used in the study. Experiment consisted of six treatment groups with eight pen replicates of five quails allocated randomly to each dietary treatment. One group was the control with no substitution while it contains cassava only as corn’s substitution completely and other groups were given cassava and 2.5% indigofera leaf meal as corn’s substitution, cassava and 5% indigofera leaf meal as corn’s substitution, cassava and 7.5% indigofera leaf meal as corn’s substitution and, cassava and 10% indigofera leaf meal as corn’s substituion. The ration used was isoprotein (24%) and isoenergy (2900 kcal kg-1). The result of this study was no significant among treatments (P>0.05) for feed intake. The body weight and body weight gain were significant (P<0.05) where the higher indigofera leaf level the lower body weight and body weight gain. The low body weight gain appropriates best state for layer quail. The ration conversion was significant (P<0.05) where the higher indigofera leaf meal level the higher ration conversion value and it indicates dreadful condition. It is suggested to evaluate the effects on layer period. 
DAMPAK PEMANENAN KAYU BERDAMPAK RENDAH TERHADAP KERUSAKAN TEGAKAN TINGGAL DI HUTAN ALAM (Studi Kasus di Areal HPH PT. Suka Jaya Makmur, Kalimantan Barat) Muhdi Muhdi; Diana Sofia Hanafiah
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 1 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.1.32-39

Abstract

The objective of the study was to know the degree of residual stand damages caused by conventional timber harvesting and reduced impact logging in natural forest. The study showed that degree of residual stand damages based on tree population in conventional timber harvesting and reduced impact logging was 33.15% and 19.53% respectively. Based on the size injury of every individual tree, the degree of the trees  damages caused by timber harvesting in conventional timber harvesting and reduced impact logging  is as follow : trees heavy injury was 64.66% and 57.20%, trees medium injury was 20.30% and 24.00% and trees light injury was 15.03% and 18.80% respectively. These research results indicate that conventional timber harvesting in the tropical natural forest caused heavier damage on residual stand when compared with a reduced impact logging.
KINETIN INFUSION THROUGH AN ORGANIC SOLVENT AS A MEANS OF REDUCING SOYBEAN SEED DETERIORATION DURING HIGH-TEMPERATURE STORAGE Marwanto Marwanto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 7, No 1 (2005)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.7.1.1-7

Abstract

Soybean seeds deteriorate rapidly when stored under unfavorable conditions and kinetin infusion prior to storage may reduce the rate of seed deterioration. To answer this hypothesis, seeds of three cultivars of soybeans with black seed coat color were permeated for four hours at a room temperature with hormone kinetin at a concentration of 1.0 mM dissolved in acetone before storage at 350C for up to six months in Agronomy Laboratory on July 2000, and their germination, accelerated aging germination and germination speed were compared with those of untreated seeds stored under the same conditions. The treatments were arranged in a split split plot design with three replications. Seeds that had been infused with kinetin prior to storage germinated to a high final percentage (from 98 to 83%) up to four months of storage, maintained a high accelerated aging germination (from 97 to 65%) up to four months of storage and retained a high speed of germination throughout the storage period. By contrast, untreated seeds showed a rapid decline in the three seed quality indicators, and by six months of storage their germination was already less than 30% and their accelerated aging germination declined to less than 20%. The promotive effects of kinetin infusion on reducing the rate of deterioration of soybean seeds were apparently dependent of the cultivar. Among the three cultivars, seeds of Cikuray lost their germination, accelerated aging germination and speed of germination at a slower rate than those of Merapi and Kalitur irrespective of kinetin infusion treatment and storage period. Therefore, it is evident that kinetin infusion prior to storage, in addition to the acceleration of germination, resulted in a delay of soybean seed deterioration.
PERTUMBUHAN VEGETATIF BIBIT JERUK GERGA PASCA OKULASI PADA KONSENTRASI PUPUK ORGANIK CAIR YANG BERBEDA Lia Resti Utami; Yulian Yulian; Bambang Sulistyo
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 21, No 1 (2019)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.21.1.32-36

Abstract

[VEGETATIVE GROWTH OF GRAFTING SEEDLINGS  OF GERGA ORANGE IN DIFFERENT CONCENTRATIONS OF LIQUID ORGANIC FERTILIZER]. This study aims to examine explain the effect of gamal leaf liquid organic fertilizer dosage, the way of application of gamal leaf liquid organic fertilizer, and the interaction between treatments on the growth of citrus plants. This research was conducted from August to December 2017 at the Greenhouse of the Faculty of Agriculture, University of Bengkulu. This research was carried out using a Randomized Complete Block Design using 2 factors. The first factor is the way the application of gamal leaf liquid organic fertilizer is sprayed on the leaves and watered onto the ground. The second factor is the concentration of gamal leaf liquid organic fertilizer which consists of control, 25%, 50%, 75% and 100%. The results showed that application of liquid organic fertilizer only gave effect to the number of branches. The 50% gamal leaf liquid organic fertilizer concentration was able to increase the number of branches of gerga orange seedlings by an average of 1.04 branches.
SIFAT-SIFAT TANAH YANG BERKEMBANG DARI BAHAN VOLKAN DI HALMAHERA BARAT, MALUKU UTARA Hikmatullah Hikmatullah
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 12, No 1 (2010)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.12.1.40-48

Abstract

[SOIL PROPERTIES DEVELOPED FROM VOLCANIC MATERIALS IN WEST HALMAHERA, NORTH MALUKU]. West Halmahera region is dominated by soils formed from young volcanic materials that have unique properties and high productivity for agricultural use. The purpose of this study is to characterize soil properties derived from volcanic materials in that area and to test the andic soil properties according to Soil Taxonomy 2006. Four pedons of strato volcanoes from the area were described their morphological properties in the field and 16 soil samples were analyzed for physical, chemical and mineralogical properties in the laboratory. The results indicated that all the pedons show black to very dark brown colored in A horizons and dark brown to brown in B horizons. The soils are deep, loam to sandy loam texture (sand content 38-71 %). The soils have weak to moderate subangular blocky structure and very friable consistency. The soils show slightly acid to neutral reaction (pHH2O 6.0-6.8), high pHNaF (10.78-10.95), high organic carbon (3.75-4.65 %) in A horizon, moderate to high cation exchange capacity and base saturation. All the pedons show high P-retentions (45-80 %), high values of ammonium oxalate extractable (Alo+0.5Feo) (2.91-6.070 %), high volcanic glass content (>5%), and index values of [(Alo+0,5Feo) x 15,625+ (%volcanic glass)] > 36.25 that meet the requirements for andic soil properties, and thus they are classified as Andisols order. The sand minerals are dominated by volcanic glasses and dark minerals that belong to intermediary properties, and high weatherable mineral reserve.
POTENSI Trichoderma harzianum DALAM MENGENDALIKAN SEMBILAN ISOLAT Fusarium oxysporum SCHLECHT. f.sp. zingiberi TRUJILLO PADA KENCUR Albertus Kurniawan Edi Prabowo; Nur Prihatiningsih; Loekas Soesanto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 8, No 2 (2006)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.8.2.76-84

Abstract

The research aimed to compare the effect of adding biological control agent Trichoderma harzianum on nine chosen isolates of Fusarium oxysporum f.sp. zingiberi in planta and yield of Kaempferia galanga was carried out at the screen house from January up to July 2005. Randomized Block Design was used with three repliactes. Result of the research indicated that T. harzianum could be able to prolong incubation period, to decrease disease intensity, to decrease virulency level, to decline number of late conidia, and to increase rhizome weight in the range of 4-30,6 dai (days after inoculation), 7.89-56.25%, low to high, 0.32-1.95 ´ 107 conidia g-1 soil, and 0.23-4.95 g per polybag, respectively. AddingT. harzianum could potentially be developed as biological control agent of Fusarium ozysporum f.sp. zingiberi. 
PEWARISAN KARAKTER YANG TERKAIT DENGAN KETAHANAN TERHADAP KEKERINGAN PADA KACANG TUNGGAK M. Chozin; J.O Gardner; C.E Watson
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 8, No 1 (2006)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.8.1.1-5

Abstract

The genetic of traits related to drought-resistance in cowpea was studied using generation mean analysis. The two contrasting drought-resistance genotypes were crossed to generate F1, F2, F3, BC1, BC2, BC1S1, and BC2S1populations which were imposed to a controlled water deficit conditions from flowering to early pod formation. The analyses were performed on stem diameter, delayed leaf senescence, and leaf temperature which were identified in earlier study as good discriminators in discerning genotypes for drought-resistance. The resistant genotype was characterized by higher delayed leaf senescence, larger stem diameter, and lower leaf temperature . The means indicated that delayed leaf senescence was controlled by partial dominant gene(s) dan segregated toward resistance. Heterotic effect toward susceptibility was found on stem diameter but recombination and segregation had seemed to bring about a reversed direction. Partial dominant gene(s) also played an important role in governing leaf temperature toward susceptibility. The Hayman’s generation mean analysis suggested that additive effect was important in controlling the three traits. The dominant and epistatic (additive-additive and additive dominant) effects were significant on stem diameter, whereas additive-dominant effect was the only additional effect for leaf temperature, beside the additive effect.
KONTRIBUSI DAN PENAWARAN TENAGA KERJA ANGGOTA RUMAH TANGGA PEKEBUN KELAPA SAWIT : Kasus di Desa Sri Kuncoro Kecamatan Pondok Kelapa Kabupaten Bengkulu Utara Ketut Sukiyono; Sriyoto Sriyoto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 7, No 2 (2005)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.7.2.111-118

Abstract

This research was aimed to investigate contribution of labour and various factor influencing household labour supply. Multiple linear regresion model estimated by Ordinary Least Square was used. Twenty nine palm oil estate households in Sri Kuncoro were censused and interviewed to get primary data. The research found that husband contribution at plantation activities was the biggest compared to his wife, children and other family members. Further, elatif estate wage to agricultural wage and the existence of othe family members were significant factors to influence household labour supply while respondent age, education level, palm tree age, and relatif estate wage rate to non agricultural wage rate were not.
KESESUAIAN LAHAN DAN EVALUASI RUMUS BRAAK UNTUK PENGEMBANGAN TANAMAN KENTANG DI KAKI BUKIT KABA BENGKULU Priyono Prawito; Eka Susiani
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 2 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.2.94-102

Abstract

In order to get optimal growth and production, potato (Solanum tuberosum) should be cultivated on suitable land. Principally, land suitability evaluation is fitting land quality with plant growth requirement. The purposesof this study were: (1) to evaluate land suitability for potato cultivation in Bukit Kaba Foot Slope Bengkulu (BKFSB), and (2) to determine the air temperature gradient for Braak equation in calculating air temperature. Landsuitability evaluation has been conducted by overlying the land characteristic map with the potato growth requirement, to produce land suitability classes with various restriction factors. Temperature gradient was calculated by plotting elevation and air temperature data from 3 weather stations into the Braak equation. Land suitability evaluation with area study of 48.410 ha showed that actual area S (marginally suitable with restriction factor of air temperature 20-23 oC) is 5,150.00 ha (10.63%); S 3ts 3t (marginally suitable with restriction factor of air temperature 20-23 oC and slope of 8-15%) is 1.727,50 ha (3.56%); N (not suitable at present with restriction factor of slope 15-25%) is 2,250.00 ha (4.67%); and N2 1s (permanently not suitable with restriction factor of air temperature >23 oC, slope >25%, and protected forest) is 39.282,50 ha (81.14%). The potential area S is 9,127.50 ha (18.86%) and N2 3t  is 39,282.50 ha (81.14%). To extend potato cultivation area in BKFB, new potato cultivars suitable for this area should be selected, and enhancing cultivation system with terrasering especially in slopping land as well ascontour planting should be done. The air temperature gradient in BKFSB area was 0.29 C each 100 m-elevation increase from sea level (0.29 oC hm-1).

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