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Bambang Gonggo Murcitro
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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 8 Documents
 1 
Search results for , issue "Vol 7, No 1 (2005)" : 8 Documents clear
EVALUASI DAN SELEKSI 24 GENOTIPE JAGUNG LOKAL DAN INTRODUKSI YANG DITANAM SEBAGAI JAGUNG SEMI Surjono Hadi Sutjahjo; Hadiatmi Hadiatmi; Meynilivia Meynilivia
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.7.1.35-43

Abstract

The objectives of this research were to characterize 24 corn genotypes and to select the best genotype to be grown as baby corn having high yield and early harvesting. The results indicated high genetic variability for all characters meaning that there was a great chance for further selection on characters of interest. Genotypes which have the highest number of cob were Lokal Rempek and Pena Boto. Pena Boto also has the lowest damage cobs. Lokal Dea and Lokal Nala were the earliest harvesting genotypes. Genotype Arjuna, Lokal Tumbu and Lokal Nala showed the highest baby corn yield. Considering all characters observed, Arjuna, Pena Boto, DT-6, Lokal Lendang Ree, Lokal Rempek, and Lokal Tumbu were the best baby corn genotypes in this study. 
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.
EFFECTS OF COVER CROPS AND TILLAGE SYSTEMS ON SOIL PHYSICAL PROPERTIES OF COGONGRASS LAND Bambang Gonggo Murcitro; Bandi Hermawan; Dwi Anggraeni
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.7.1.44-50

Abstract

Amendment of soil physical properties on cogongrass field is required for crop production. Objective of this study was determine the physical properties of the soil that was previously populated by cogongrass as affected by cover crops and tillage systems. A split plot design was used to allocate the combinations of conventional tillage and no-tillage system with 5 species of cover crops. Results showed that the properties of soil physic were not affected by cover crop species. No-tillage resulted in lower bulk density, but higher porosity and organic content, compared to conventional tillage. 
REGENERASI IN VITRO PLANLET JAHE BEBAS PENYAKIT LAYU BAKTERI PADA BEBERAPA TARAF KONSENTRASI 6-BENZYL AMINO PURINE (BAP) DAN 1-NAPHTHALENE ACETIC ACID (NAA) Marlin Marlin
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.7.1.8-14

Abstract

The objective of this experiment was to determine the optimum concentration of 6- benzyl amino purine (BAP) and 1-naphthalene acetic acid (NAA) for in vitro regeneration of diseases-free plantlets of ginger. Meristem part of ginger rhizome selected from infected area was used as plant material. The explant was cut into 0.5 cm3 and, then, cultured in an MS basal medium supplemented with combination of treatments. The experiment wasarranged in Completed Randomized Design with factorial arrangement of the treatments. The first factor was BAP concentrations (0,1,2,3,4 and 5 ppm of BAP), and the second factor was NAA concentrations (0,1,2,3,4 and 5 ppm of NAA). The experiment was done in 18 sterilization methods and planting techniques to regenerate disease-free plantlets. The results showed that supplements of BAP and NAA affectedin vitro plantlet regeneration of ginger. Additional BAP and NAA on the basal media improved percentage of root, shoot and plantlet formation about 83.33- 100%. The highest number of shoot was obtained on 4 ppm of BAP and 3 ppm of NAA, while the highest number of root was obtained on media with addition 3.58 ppm of BAP and 5 ppm of NAA. Supplementing the medium with 3-4 ppm of BAP and 3 ppm of NAA was the best combination for regenerating plantlets of ginger. Microscopic test of micro-rhizome cell showed that there was only 2% of sample infected by P. solanacearum. This result indicated that in vitro technique could be used as an alternative method to produce a disease-free rhizome of ginger.
PERUBAHAN PENUTUPAN LAHAN DAN PENGARUHNYA TERHADAP CADANGAN AIR PADA DAERAH TANGKAPAN AIR DANAU DUSUN BESAR Suhardi Suhardi
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.7.1.51-58

Abstract

The aim of this research was to determine the change of regions covered by vegetation in catchment area of Dusun Besar Lake. The research was conducted by analyzing Landsat TM Datas obtained in 1994, 1997 and 2003 and supported with field observation in 2003. Analyzed was conducted by using of Er Mapper 5.5 with RGB 542 bands. This research revealed that the decrease of regions covered by vegetation was observed from 1994 to 2003. The width of this area in 1994 was 2039.50 ha, while in 1997, this area became 1375.97 ha and decreased to 282.26 ha in 2003. The reduce of this region caused, undoubtedly, the shrink of areas covered by flood around lake site. In fact, this research showed the decrease of this flood area from 627.34 ha in 1994, and became 160.67 ha in 1997 and 44.29 ha in 2003. This reduction of vegetation area was probably due by high intensity of deforestation by resident who changed this area to became paddy rice or other types of land culture. This deforestation was intensified by road construction from Nakau to Air Sebakul in 1990 that split this area. 
MONITORING KADAR AIR TANAH MELALUI PENGUKURAN SIFAT DIELEKTRIK PADA LAHAN JAGUNG Bandi Hermawan
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.7.1.15-22

Abstract

This research aims to monitor soil water content in the field through the measurement of the electrical impedance during the early period of corn growth in the dry season. Two levels of tillage and four types of mulch were arranged at a split plot design with three replications. Part of experiment plot was cultivated twice and the other part was not cultivated. Each main plot was then divided into four sub-plots of 3 x 4 m each of wich was applied with 100% imperata mulch, 80% imperata and 20% kerinyu mulch, 50% imperata and 50% kerinyu, or 100% kerinyu. Two sets of wire, where the lowest 10 cm part was not isolated, were inserted into 10 and 20 cm soil depth therefore they measured the electrical impedance at the 0-10 and 10-20 cm soil layers. The electrical impedance values were measured using the digital ohm-meter that produce the electrical current at frequency of 1 kHz. Results show that the measured electrical impedance values have a very high sensitivity to the fluctuation of soil water content in the field. When calibrated to the same soil, the values can be transformed into water content values. During the measurement period, the cultivated soil is consistently drier at the 0-10 depth and wetter at the 10-20 depth compared to the uncultivated soil. The combination of 50% imperata and 50% kerinyu mulch maintains higher soil water content uring the dry season compared to other combinations. The research suggests that monitoring of soil water content can be conducted directly in the field through the measurement of electrical impedance.
CHANGE IN WATER CONTENT OF PATCHOULI LEAVES DURING DRYING PROCESS WITH DIFFERENT AIR STREAM VELOCITIES AND TRAY DRYER ROTATION Sumarsono Sumarsono
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.7.1.59-67

Abstract

Patchouli farmers are often faced with low quantity and quality of the extracted oil produced by the crop. These are primarily due to lack of understanding in the post harvest technology. Purpose of this study was to determine the rate of change in water content of patchouli for the period of drying process at different rate of air stream velocities and to determine the position of drying trays in dryer that provide the shortest period of bringing the plant material into 14% water content for given air stream velocities. Results indicated that the first and second lower trays (tray1 and tray 2) in the dryer provided the shortest period of drying the material at all air stream velocities. At 90 m min-1 velocity, both trays brought the material into 14 % water content at 21th interval of perception (126 h). Similarly, at 110 m min-1 and 125 m min-1 velocities, the same condition was found at 16th interval of perception (96 h) and 18th interval of perception (108 h), respectively. 
KANDUNGAN AMONIUM DAN KALIUM TANAH DAN SERAPANNYA SERTA HASIL PADI AKIBAT PERBEDAAN PENGOLAHAN TANAH YANG DIPUPUK NITROGEN DAN KALIUM PADA TANAH SAWAH Soni Isnaini
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.7.1.23-34

Abstract

Tillage system can influence organic matter, nitrogen (N), and potassium (K) in the soil solution. Ammonium (N-NH +) buffer capacity is influenced by K+ in the soil solution. The objective of this study was to determine the content of N-NH + and K exchangeable (K-ex.) and its uptake as well as yield of rice (Oryza sativa L.) in the lowland rice fields under intensive/conventional tillage (CT) and no-tillage (NT) with application of nitrogen (N) and potassium (K) fertilizers. The experiment was conducted during rainy season 1999/2000 (8th growth season) in Kedaloman village, Talangpadang, Tanggamus, Lampung Province. The study was part of long-term research established since dry season 1996. The experiment was set up in a completely randomized block design with three replications. There were three treatments allocated in a factorial arrangement, i.e. (1) tillage system (CT and NT); (2) K fertilizer (without K and 49.8 kg ha-1 K); and (3) N fertilizer (46, 115, and 184 kg ha-1 N). Results of the study showed that N-NH + content and K uptake was affected by the interaction of tillage system, N and K fertilizers. When 49.8 kg ha-1 K was supplied, application of 184 kg ha-1 N produced higher N-NH + content and K uptake than 46 kg ha-1 N on both CT and NT. K-ex. and N uptakes on NT was 18% and 9% higher than those on CT, respectively. Application of nitrogen at 184 kg ha-1 N had the highest effect on K-ex., N uptake, and yield of rice. Application of 49.8 kg K ha-1 produced K-ex.12% higher than without K. In conclusion the N-NH +, K-ex., N and K uptake, and yield of rice were strongly determined by N fertilizer rather than the tillage system or K application.

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