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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 163 Documents
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PERTUMBUHAN BIBIT KELAPA SAWIT DI PRE-NURSERY DENGAN KOMPOSISI MEDIA TANAM DAN KONSENTRASI PUPUK CAIR Azolla pinnata BERBEDA Filsafat Waruwu; Bilman Wilman Simanihuruk; Prasetyo Prasetyo; Hermansyah Hermansyah
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 1 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.1.7-12

Abstract

[GROWTH OF OIL PALM SEEDLINGS IN PRE-NURSERY UNDER DIFFERENT MEDIA COMPOSITIONS AND CONCENTRATIONS OF Azolla pinnata LIQUID FERTILIZER].  Vigourous seedling is prerequisite to successful  production of oil palm.  Aside from the genetic quality of the planting material, supply of nutrients during early growth of the seedling play an important role in determinting the overall seedling performances. This study was performed to determine the best combination of media composition and concentration of liquid fertilizer made of Azolla pinnata for oil palm seedling growth during pre-nursery. A factorial arrangement of the treatments involving growing media consisted of different composition of oil palm empty fruit bunches compost and soil (1: 1, 1: 2, and 2: 1 v/v)  and different concentration of Azolla pinnata liquid fertilizer applications (0, 20, 40, and 60 mL/L) were arranged in a randomized complete block design with three replications. Data were collected for leaf number, stem diameter, seedling  height, and leaf greenness at 30, 60, and 90 days after sowing (DAS). A significant interaction effect between the treatments was observed on leaf number at 60 and 90 DAS. A further regression analysis revealed that the highest number of leaves (4.3 at 60 DAS and 6.9 at 90 DAS) were attained on the media composition of 1:1 with liquid fertilizer application at  37.5 and 56 mL/L, respectively. Seedling  height and stem diameter at 90 DAP showed quadratic responses to the increasing concentration of the liquid fertilizer applications. The maximum seedling height (26.22 cm) was attained  at  the liquid fertilizer concentrations of 36.21 mL/L. Similarly, the maximum stem diameter (7.43 mm) was attained at the concentration of 51.00 ml/L. The leaf greeneess at 60 DAS was increased in a linear fashion with the increasing concentration of the liquid fertilizer.
HUBUNGAN KELERENGAN DENGAN KADAR AIR TANAH, PH TANAH, DAN PENAMPILAN JERUK GERGA DI KABUPATEN LEBONG Nurlina Banjarnahor; Kanang Setyo Hindarto; Fahrurrozi Fahrurrozi
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 1 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.1.13-18

Abstract

[RELATIONSHIP OF SLOPE STEEPNESS TO SOIL WATER CONTENT, SOIL PH, AND PERFORMANCES OF GERGA ORANGE AT LEBONG REGENCY]. In Lebong Regency, gerga orange is commonly grown in hilly areas and many of the crop stands were found on steep sloped land. Objective of this study was to determine the pattern of relationship of slope steepness to soil water content, soil pH, and the overall plant performances. Soil samples were collected from the area below the canopy of 300 gerga orange trees differing in the slope steepness for for soil water content (SWC) and soil pH.  The observation of plant performances were also made from the same tree as used for the soil properties observations. The analysis of regression indicated that relationship of slope steepness to both the observed soil properties and plant performances could be represented by the linear models suggesting that all the observed variables were reduced along with the increasing slope steepness.
EFEKTIVITAS EKSTRAK DAUN PEPAYA DALAM PENGENDALIAN KUTU DAUN PADA FASE VEGETATIF TANAMAN TERUNG Riski Ramadhona; Djamilah Djamilah; Mukhtasar Mukhtasar
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 1 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.1.1-6

Abstract

[EFFICACY OF PAPAYA LEAF EXTRACT IN CONTROLLING COTTON APHID DURING VEGEATIVE GROWTH STAGE OF EGGPLANT].  Cotton aphid (Aphis gossypii Glover) can cause serious economic losses in the eggplant production.  The application of synthetic pesticides can be effective in controlling the pest but it may not be the best solution for the human health and environment. Botanical pesticides have long been known for their potential as the alternative to synthetic pesticides for crop protection with reduced risk to human health and environmental hazard. Objective of this study was to compare the efficacy of papaya leaf extract solutions in controlling cotton aphid and their effect on the vegetative growth of eggplant. Papaya leaf extract solutions differing in concentration (0%, 10%, 20%, 30%, 40%, and 50%) were sprayed onto aphid infested eggplants to observe the insect mortality, crop damage, and the lethal concentration at LC50 and LC90. The mortality of aphid was significantly increased following the application of papaya leaf extract, with the highest mortality (91.33%) was found on the concentration of 50%. The lethal concentrations of the extract causing 50% (LC50) and 90% (LC90) aphid mortality were   9.98% and 41.99%, respectively. As compared to the control treatment, the crop damage was significantly reduced by the application of the papaya leaf extract solution. 
PENAMPILAN 10 AKSESI TALAS (Colocasio esculenta (L). Schott) DI LAHAN PESISIR BENGKULU Ramalan Manahara Simamora; Yulian Yulian; Edhi Turmudi
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 1 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.1.19-25

Abstract

Talas (Colocasio esculenta (L). Schott) merupakan salah satu komoditas pangan yang belum termanfaatkan secara maksimal. Potensi  komoditas tersebut belum didukung dengan data yang baik. Untuk menggali potensi yang dimiliki tanaman talas perlu dilakukan pendataan sifat pentingnya dengan melakukan karakterisasi. Karakterisasi dapat dilakukan berdasarkan karakter morfologi dan fisiologi tanaman. Penelitian ini bertujuan untuk mengidentifikasi penampilan 10 genotipe talas pada fase vegetatif di lahan pesisir. Penelitian ini dilaksanakan pada bulan Juni sampai Agustus 2015 di Kelurahan Sukamerindu, Kecamatan Sungai Serut, Kota Bengkulu dengan ketinggian tempat + 14 m dpl. Penelitian ini menggunakan Rancangan Acak Kelompk Lengkap (RAKL) dengan 10 genotipe talas dan masing-masing perlakuan diulang 3 kali sehingga diperoleh total 30 unit percobaan dengan total 240 tanaman. Hasil penelitian menunjukkan bahwa secara morfologi talas dikelompokkan berdasarkan warna batang (Putih :  genotipe T2, T4, T5, T6, T7, T8 dan T9, pink pucat : genotipe T1, T3, orange kemerah mudaan : genotipe T10), warna daun (Hijau : genotipe T2, T3, T4, T5, T6, T8, T9 dan T10, hijau tua : T7, hijau keunguan : T1), bentuk daun (perisai :  genotipe T1, T6, delta : genotipe T2, T3, T7, Oval : genotipe T5, T8, T9 dan T10,  hati : genotipe T4), ujung daun (Runcing: genotipe T1, T2, T3, T4, T9, T10, tumpul : genotipe T5, T6, T7, bundar : genotipe T8) tepi daun (Bergelombang : genotipe T1, T2, T3, T5, T6, T8, T9, T10, rata : genotipe T4,T7), dan warna tangkai daun (Hijau : genotipe T2, T4, T10, hijau kekuningan : genotipe T5,T8,T9, hijau kebiruan : genotipe T7, hijau keunguan : genotipe T3, T6, hitam : genotipe T1).  Terdapat beda sangat nyata antar 10 genotipe talas dalam hal tinggi tanaman, tingkat kehijauan daun, diameter batang semu dan jumlah anakan.
PERTUMBUHAN DAN HASIL PADI SIRANTAU PADA PEMBERIAN BEBERAPA MACAM DAN DOSIS PUPUK KANDANG Ringki Putra Azalika; Sumardi Sumardi; Sukisno Sukisno
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 1 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.1.26-32

Abstract

Salah satu upaya peningkatan produksi padi adalah dengan pengembangan pertanian di lahan – lahan sub optimal yaitu dengan penanaman varietas padi yang toleran kekeringan seperti kultivar sirantau. Penelitian ini bertujuan untuk menentukan jenis dan dosis pupuk kandang yang optimum untuk pertumbuhan dan hasil padi sirantau. Penelitian telah dilaksanakan pada bulan Januari 2016 - Mei 2016 di Kebun Percobaan Fakultas Pertanian Universitas Bengkulu. Penelitian ini merupakan percobaan pot faktorial dua faktor, menggunakan rancangan percobaan RAL (Rancangan Acak Lengkap).  Faktor pertama adalah jenis pupuk kandang, yaitu Pupuk kandang Sapi, Pupuk kandang Kambing, Pupuk kandang Ayam. Faktor kedua adalah dosis pupuk kandang, yaitu 5 ton/ha, 10 ton/ha, 15 ton/ha, 20 ton/ha, dan 25 ton/ha,  masing – masing perlakuan diulang sebanyak 3 kali. Variabel yang diamati meliputi tinggi tanaman, jumlah anakan total, jumlah anakan produktif, panjang malai, jumlah bulir per malai, persentase bulir bernas, bobot 100 gabah kering, dan bobot gabah kering perumpun. Hasil penelitian menunjukkan bahwa jenis pupuk kandang memberikan pengaruh nyata terhadap variabel jumlah anakan total, jumlah anakan produktif dan bobot gabah kering per rumpun. Pupuk kandang ayam dengan dosis 10 ton/ha memberikan hasil padi terbaik dengan potensi hasil 123,13 g per rumpun (5,77 ton/ha).
PERUBAHAN SIFAT KIMIA TANAH DAN HASIL JAGUNG PADA INSEPTISOL DENGAN PEMBERIAN KOMPOS Halasan Halasan; Anandyawati Anandyawati; Hasanudin Hasanudin; Riwandi Riwandi
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 2 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.2.33-39

Abstract

[CHANGE IN SOIL CHEMICAL CHARACTERISTICS AND YIELD OF MAIZE IN AN INCEPTISOL AS AMENDED WITH COMPOST]. Vast area of inceptisol in Indonesia is a potential natural resource for improving the domestic maize production. The amendment of organic material is expected to make correction on the fertility problem inherent in the soil. Objective of this study was to determine the optimum dose of compost for some soil chemical properties and maize performances. The doses of compost consisted of 0, 2.5, 5, 7.5, 10, and 12.5 ton/haa were allotted randomly on the experimental plots according to completely randomized design with three replications. Observations were made on  the exchangeable Aluminum (Al-dd), pH, organic carbon, water content, plant height, unhusked and husked ear weight, and grain yield. Analysis of variance showed that the dose of compost had significant (P?0.05) effects on pH and C-organic in soil. Giving compost at a dose about 12.5 ton/ha could increase the pH about 4.9, whereas giving compost at a dose about 10 tonha-1 could increase C-organic about 3.09 %. In other hand, the giving of compost with various dose did not give significantly (P>0.05) affect towards  Aluminium (Al-dd), pH, C-organic, water content, height of plants, weight of without husk, weight of cob with husk, weight of dry corn beans. The highest grain yield (2,415.75 kg/ha) was observed on compost applied at  dose  12.5 ton/ha.
INSIDENSI PENGGEREK BATANG PADI KUNING (Schirpophaga incertulas Walker) PADA TIGA VARIETAS PADI : KASUS DI DESA KEMUMU BENGKULU UTARA Irma Cahyoko; Dwinardi Apriyanto; Kanang S. Hindarto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 2 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.2.40-45

Abstract

[INCIDENCE OF THE RICE YELLOW STEM BORER (Schirpophaga incertulas Walker) ON THREE RICE VARIETIES IN KEMUMU, NORTH BENGKULU]. Rice yellow stem borer (RYSB), Schirpophaga incertulas Walker, often causes yield loss in irrigated rice field. Dead heard and white ear head are the common symptomps resulted from the larval damage. The use of resistant varieties may reduce the risk of yield loss, but the resistance may lose quickly as the varieties are continually grown in a large area. The assessment of the insect incidence in rice field is necessary in order to determine the status of the pest for certain period of time. The objective of the study was to determine the incidence and damage incurred by RYSB in three rice varieties, Mekongga, Cibogo, and Situ Bagendit at farmer rice fields. A survey was conducted in December 2017-February 2018 in Kemumu, North Bengkulu Regency. Observation of RYSB was made on randomly selected 30 hills from + 1 ha area for each variety that was located adjacent to each other. Grain yield was measured from the sampled hills and from 3 plots of 9 m2 . Weight of 1000 grain was measured from grain of three sampled hills. The results revealed that the incidence of RYSB was low, as indicated by the presence of egg mass and larvae of RYSB, and no significant difference was found among the three varieties. Nevertheless, the average cumulative number and percentage of dead heart and white ear head was significantly lower in Mekongga than those of Cibogo and Situ Bagendit. In term of grain yield, however, Mekongga outperformed the other two varieties. The low incidence of RYSB might suggest that growing different variety practiced by local farmers was able to suppress pest population, and therefore it should be implemented in all main areas of rice production.
PERTUMBUHAN DAN HASIL SELADA (Lactuca sativa L.) DENGAN PEMBERIAN PUPUK KANDANG DAN ABU SEKAM PADI DI INCEPTISOL. Evelyn Evelyn; Kanang S. Hindarto; Entang Inoriah
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 2 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.2.46-50

Abstract

[GROWTH AND LETTUCE YIELD (Lactuca sativa L.) BY GIVING MANURE AND RICE HUSK ASH IN INCEPTISOL].  Increasing market demand for lettuce (Lactuca sativa L.) makes the prospect of developing lettuce very promising. Bengkulu Province is dominated by inceptisol soil types which have low soil fertility, making it less optimal for lettuce growth. Giving organic matter can increase soil fertility through improving soil physical, chemical and biological properties so that it can support the growth of lettuce. This study aims to determine the dosage of manure, the dose of rice husk ash and the optimal dose interaction for lettuce growth and yield. This research was conducted from May 2018 to July 2018 in Medan Baru, Muara Bangkahulu Subdistrict, Bengkulu City. The research design used was a Completely Randomized Design (CRD) consisting of two factors and repeated 3 times. The first factor is the dosage of cow manure with three levels, namely: 0 tons/ha, 15 tons/ha, and 30 tons/ha. The second factor is the dose of rice husk ash which consists of three levels, namely 0 tons/ha, 3 tons/ha, and 6 tons/ha. Data from the observations were analyzed statistically by Analysis of Variance (ANOVA) using the F test at the level of 5%. To determine the dosage of manure, the dose of rice husk ash and the optimal combination of doses for growth and yield of lettuce used the Polynomial Orthogonal method. The results showed that there was no interaction between cow manure and rice husk ash on the growth and yield of lettuce. The effect of cow manure has not shown the optimum dose for growth and yield of lettuce. The addition of manure doses up to 30 tons/ha was able to increase the value of plant height, number of leaves, leaf area, and fresh weighted plant weight of 0.189, 0.038, 0.931 and 0.104 respectively. Giving rice husk ash up to a dose of 6 tons/ha did not have a significant effect on all observed variables. 
PENGARUH SUBTITUSI PUPUK N SINTETIK DENGAN LIMBAH LUMPUR SAWIT TERHADAP PERTUMBUHAN DAN HASIL JAGUNG MANIS Johannes Simbolon; Bilman Wilman Simanihuruk; Bambang Gonggo Murcitro; Herry Gusmara; Eko Suprijono
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 2 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.2.51-59

Abstract

[EFFECTS OF PALM OIL SLUDGE SUBTITUTION FOR SYNTHETIC N FERTILIZER ON GROWTH AND YIELD OF SWEET CORN]. Palm oil sludge (POS) contains high concentrations of organic nitrogen dan its can serve as an alternative for synthetic nitrogen fertilizer. Objective of this study was to compare the growth and yield of sweet corn as amended with different compositions of synthetic N fertilizer and palm oil sludge. Six compositions, each containing 138 kg N/ha were assigned as the treatment and arranged in a randomized complete block design with three replications. These were 100% synthetic fertilizer, 80% synthetic fertilizer + 20% POS, 60% synthetic fertilizer + 40% POS, 40% synthetic fertilizer + 60% POS, 20% synthetic fertilizer + 80% POS, and 100% POS. The results of this study indicated that the plot amended with 60% synthetic fertilizer + 40% POS produced the highest plant stature (176.4 cm), stem diameter (2.40 cm), leaf area (8712.82 cm2 ), plant fresh weight (375.19 g), plant dry weight (136.68 g), and husked ear length (17.93 cm). However, the highest observed husked ear yield was only about 61.6 % the yield potential of the sweet corn variety.
PENAMPILAN SEPULUH VARIETAS KEDELAI YANG DITUMPANGSARIKAN DENGAN TEBU Iskandar Umarie; M. Hazmi; Oktarina Oktarina
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 2 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.2.60-65

Abstract

[PERFORMANCES OF TEN SOYBEAN VARIETIES AS INTERCROPPED WITH SUGARCANE]. An intercropping system between soybean and sugarcane may be an alternative to increase soybean production in Indonesia, but not all soybean varieties are suitable for intercropping system as different soybean varieties may perform differently under intercropping system and monoculture system. Therefore, suitable soybean varieties for intercropping should be identified to warrant the higher crop productivity. This study was conducted to to compare the growth and yield performances of ten soybean varieties in monoculture and soybean-sugarcane intercropping systems. The experiment was laid in a Split Plot Design with three replications. The cropping systems (monoculture and intercrop) were allotted in the main plots, while the soybean varieties (Gepak Kuning, Kaba, Wilis, Tanggamus, Burarang, Sinabung, Anjasmoro, Agromulyo, Ring-1, and Gema) were assigned as the sub plots and allotted randomly in each main plot. On overall, the intercropping system had significantly reduced the soybean pod number, seed number, wight of 100 seed, and, seed yield/plant, but increased plant height as compared to the monoculture system. The exceptions were observed for seed number and weight of 100 seed. The reduction of seed number was not significant on Agromulyo and Dering-1.On the other hand, Anjasmoro and Dering-1were the only varieties showed significant reduction in weight of 100 seed. Kaba, Willis, Tanggamus, Burarang, Sinabung, and Dering-1 showed their consistant performormances across the cropping systems. However, the higher seed yield/plant in both systems was observed on Gepak Kuning, Willis, Burarang, Agromulyo, Dering-1, and Gema.

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