Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

P-Index

This Author published in this journals

All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Indonesian Journal of Agricultural Science Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Jurnal Penelitian Tanaman Industri Jurnal Agrotropika

Bambang S. Purwoko

Departemen Agronomi dan Hortikultura, Institut Pertanian Bogor, Jl. Raya Darmaga, Bogor 16680

Author-ID : 350223

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering

Published : 37 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4

PENGARUH KONSENTRASI DAN FREKUENSI PEMBERIAN PUPUK METALIK TERHADAP PERTUMBUHAN TANAMAN LADA PERDU (Piper nigrum) DI PEMBIBIT AN Purwoko, Bambang S.; Yudhiani, Yeni; Syakir, Muhammad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 25 No. 2 (1997): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of the experiment was to determine the best concentration and frequency of application of micronutrients (Metalik) to increase pepper plant growth in the nursery. Metalik was used as it contained several micronutrients. Thirteen treatments were arranged as follows: untreated plants as control and twelve other treatments were combinations of concentration (0.3, 0.6, 0.9, 1.2 ml Metalik/l water denoted as KO.3, KO.6, KO.9, and K1.2 respectively) and application frequency (once a week, once every two weeks, and once every four weeks denoted as Fl, F2, and F41respectively). The twelve treatments were: KO.3Fl, KO.3F2, KO.3F4, KO.6Fl, KO.6F2, KO.6F4, KO.9F1, KO.9F2, KO.9F4, Kl.2F1, Kl.2F2, and Kl.2F4. Plants used in the experiment originated: from secondary branch cuttings of Lampung Daun Lebar cultivar. A randomized complete blocked design was used. Experiment consisted of three replicates. Result of the experiment showed that foliar application of Metalik increased growth of pepper plants in the nursery. The best treatment was concentration of 0.3 ml Metalik/l water and application frequency of once every four weeks.

PENGARUH KONSENTRASI DAN LAMA PERLAKUAN PUTRESIN TERHADAP PERUBAHAN KUALITAS BUAH PISANG AMBON Purwoko, Bambang S.; Gunadi, S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 23 No. 1 (1995): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Polyamines have been reported to have a role in habiting senescene. Polyamine application inhibited fruit softening and extend fruit shelflife. The common polyamine included putrescine, spermidine, and spermine. The objective of the present study was to determine the effect of concentration and length putrescine application on some quality changes in banana. The result showed that putrescine had some effects on weight loss, inhibited fruit softening, and color development. However, the effect were not consistent. The best concentration and length of application could not determine. It was suggested that pressure infiltration was used for polyamine application

IDENTIFICATION AND ANALYSES OF SHORT CHAIN FATTY ACIDS IN APPLE SEED PARTS DURING STRATIFICATION Purwoko, Bambang S.; Powell, Loyd E.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 22 No. 2 (1994): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Penelitian ini bertujuan untuk mengidentifikasi dan menganalisis perubahan kandungan asam lemak rantai pendek (ALRP) pada biji apel selama stratifikasi. Asam-asam heksanoat, oktanoat, nonanoat, dan dekanoat telah diidentifikasi dengan Gas-Kromatografi Mass- Spektrometri. Analisis rutin ALRP dengan Gas-Kromatografi menunjukkan bahwa kandungan ALRP tertinggi ditemukan pada membran nuselus. Konsentrasi ALRP pada kulit biji rendah dan setingkat dengan kandungan ALRP pada embrio. Asam heksanoat merupakan ALRP terbanyak pada semua bagian biji padahal asam ini dianggap inhibitor yang lemah. Kandungan asam nonanoat dan dekanoat jauh lebih kecil dan biasanya kurang dari 10-4 M Gambaran umum perubahan ALRP selama stratifikasi adalah menurun atau konstan dan kandungannya kurang dari 10 -3 M, terlalu kecil untuk menjadi inhibitor yang signifikan dalam mekanisme dormansi. Penurunan ALRP terjadi pada suhu 5 °C dan 2 °C, padahal hanya perlakuan 5 °C yang dapat memecahkan dormansi biji apel. Dari studi ini, dapat disimpulkan bahwa perubahan kandungan ALRP selama stratifikasi tidak mendukung hipotesis bahwa ALRP berperan dalam dormansi biji apel.

HUBUNGAN ASAM LEMAK RANTAI PENDEK, STRATIFIKASI, DAN GIBERELIN PADA PERKECAMBAHAN EMBRIO APEL Purwoko, Bambang S.; Powell, Loyd E.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 22 No. 1 (1994): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of the present experiment was to determine the inhibitory properties of short chain fatty acids (SCFA) in apple embryo germination. The result showed that the SCFA inhibition on apple embryo germination was dependent on chain length and was in the millimolar range. No synergistic effect was observed when SCFA were applied simultaneously. The inhibition of SCFA was reversed by GA4+7. A higher concentration of SCFA was needed to inhibit embryo germination as the stratification progressed.

Pewarisan Sifat Toleransi Padi Sawah (Oryza sativa L) Terhadap Cekaman Suhu Rendah Limbongan, Yusuf L.; Aswidinnoor, Hajrial; Purwoko, Bambang S.; Trikoesoemaningtyas2, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 2 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

One of the definite successful of rice breeding programs for increasing yield and tolerance to environmental stress condition is selection method. Selection method will be effectively if it is supported by a perfect knowledge of genetics character inheritance. The objectives of this study is to investigate the information of inheritance pattern adapted of rice towards low temperature stress condition. The experiment was conducted in both Sesean rural area, Toraja regency, South Sulawesi on 1500 m above sea levels, an mean temperature 15 o C, type of soil is Podzolic and at Bogor Agriculture Institute. This experiment is done in January 2006 until July 2007. The result showed that tolerance parental grew well and higher yield than sensitive parental. There were no significant differences between F1 and F1 reciprocal for all characters. Tolerance parental is more superior than sensitive parental in all characters have been tested. Mean of F1 generation is in between tolerance parental and sensitive parental. BCP1 has spheres wider than parentals and F1 generation, but BCP2 smaller than parentals and F1 generation. F2 generation is spheres wider than the average of both parentals. The m [d] [h] genetic model is the most suitable for all characters. Except, date of flowering and weight of filled rice where appropriate models is m [d] [h] [l]. Broad sense and narrow sense heritability is range between low to high. Based on the degree of dominant, additive effect is higher than dominant effect. The negative F value reached on date of flowering and fur lenght; and others characters, F value is positive.

Potensi Hasil Jarak Pagar (Jatropha curcas L.) pada Satu Tahun Budidaya di Lahan Kering Lombok Barat, Nusa Tenggara Barat Santoso, Bambang B.; Hasnam, ,; Hariyadi3, ,; Susanto, Slamet; Purwoko, Bambang S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 2 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Productivity of Physic Nut (Jatropha curcas L.) depends on environment and culture intensity. We evaluated yield potential of Jatropha curcas L. at dry land (sandy entisol soil type) of West Lombok, West Nusa Tenggara using three types of propagules, i.e., stem cutting, seed, and seed after pruning and were designed with Randomized Block Design in three replications during November 2006 until November 2007. Result showed that productivity of nut is 880.78 kg/ha (352.31 g/plant) from stem cutting, 749.81 kg/ha (299.92 g/plant) from seed, and 484.11 kg/ha (193.64 g/plant) from seed followed by pruning after 2 weeks planting.

Karakteristik Daun Jarak Pagar (Jatropha curcas L.) dan Hubungannya dengan Fotosintesis Raden, Ince; Purwoko, Bambang S.; Hariyadi, ,; Ghulamahdi, Munif; Santosa, Edi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 2 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of this research was to study the morphology and physiology of jatropha leaves and its relation to photosynthesis. Research was conducted using Randomized Complete Block Design with single factor, i.e., leaf ages at the canopy with ten replications. The results showed that jatropha had phyllotaxy 5/13 with angular divergence 1380 . In early growing leaf enlarged sharply and then constant after 9 week, remaining green for 14 weeks. Chlorophyll a, b, and total achieved maximum at 9 week, i.e., 0.45 g/cm2 , 0.19 g/cm2 , and 0.62 g/cm2 , respectively. Photosynthesic rate was maximum at 6 week, i.e., 8.99 µmol/m2 /s, while number of stomata was maximum at 9 week (289.47 mm2 ). This finding implies that leaf number 11 to 13 or age 6 week after emergence could be used as reference for photosynthetic evaluation.

Co-Authors , Amisnaipa , Hariyadi , Hasnam , Satoto A. S. Abidin Achmad Surkati Agatha Widhi B Ahmad Surkati ALEX HARTANA Aris Munandar Bambang B. Santoso Buang Abdullah D. Wasgito Purnomo Diah Juniarti Dwi Guntoro Dyah Sri Sulistiyani Edi Santosa Fera Santi Magdalena Fitmawati Fitmawati HAJRIAL ASWIDINNOOR Hariyadi3, , I NYOMAN RAI I Wayan Budiastra I. Hanarida I. S. Dewi Ida H. Somantri Ince Raden Indrastuti A. Rumanti Irdika Mansur Iskandar M. Lapanjang Iswari S. Dewi Ketut Suryana Lady Lengkey Latifah K. Darusman Livy W. Gunawan Loyd E. Powell M A Chozin Maya Melati Memen Surahman Muhammad Syakir Munif Ghulamahdi Nurul Khumaida P. Fitradesi Pepi Nur Susilawati Priatna Sasmita R. Poerwanto Ramdan Hidayat Reny Herawati Roedhy Poerwanto Roedy Poerwanto S. Gunadi S. Sujiprihati Sakhidin Sakhidin Semin Semin Slamet Susanto Sri S. Harjadi Sri Wilarso Sri Wilarso Budi SRIANI SUJIPRIHATI Sudarsono Sudirman Yahya Suhirman, Suhirman Syamsiar, Syamsiar Tatiek K Suharsi Trikoesoemaningtyas Yeni Yudhiani Yoga Yuniadi Yusuf L. Limbongan

Title

Found 37 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 37 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 37 Documents
Search