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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal AGROSAINS dan TEKNOLOGI Jurnal Agrotek Tropika Jurnal Riset Manajemen dan Bisnis

Edi Santosa Edi Santosa

Soil Biology and Health Division, Indonesian Soil Research Institute, Indonesian Agency for Agricultural Research and Development Jl. Tentara Pelajar No.12 Cimanggu Bogor 16114 Indonesia

Author-ID : 567448

Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Social Sciences

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Status Gula dan Hara pada Daun Serta Status Gula pada Buah Manggis Selama Fase Perkembangan Buah Dhika Prita Hapsari; Roedhy Poerwanto; Didy Sopandie; Edi Santosa; Deden Derajat Matra
Jurnal AGROSAINS dan TEKNOLOGI Vol 9, No 1 (2024)
Publisher : Fakultas Pertanian - UMJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jat.9.1.44-52

Produksi manggis dari tahun ke tahun mengalami fluktuasi yang cukup signifikan akibat terjadinya ketidakseimbangan fotosintat pada tanaman manggis. Pada saat on year buah manggis yang dihasilkan banyak namun berukuran kecil, sebaliknya pada saat off year buah manggis yang dihasilkan sedikit namun berukuran lebih besar. Selain itu, terjadi gugur buah yang cukup tinggi ketika on year akibat tanaman tidak mampu menopang buah yang sangat banyak. Penelitian ini dilakukan dengan tujuan mendapatkan informasi mengenai status nutrisi pada tanaman manggis sehingga dapat menjelaskan fluktuasi hara dan gula pada tanaman manggis selama satu periode panen. Hasil penelitian menunjukkan bahwa tanaman manggis memiliki rasio jumlah daun dan buah yang tinggi yaitu 142:1. Perubahan kandungan hara daun akibat perkembangan buah manggis paling utama ditemukan pada unsur K, Ca, B, Cu, Zn yang memiliki peran penting dalam proses pembentukan buah. Diduga terjadi hambatan translokasi gula pada fase awal perkembangan buah yang ditunjukkan oleh tingginya kandungan gula pada daun seiring dengan rendahya kandungan gula pada buah manggis. Kandungan glukosa dan fruktosa paling tinggi terdapat pada buah manggis yang memasuki fase pematangan buah.ABSTRACTMangosteen production fluctuates year by year because of imbalance nutrient in plant. Plant produces a lot of fruit with smaller size during “on season”, while few of fruit with bigger size during “off season”. On the other hand, the high fruit drop occurred when “on season” because mangosteen tree is not able to hold too many fruits. This experiment was conducted to obtain the information of nutrient status on mangosteen tree and explain the fluctuation of nutrient and sugar in one harvset period. The result show that mangosteen had a very high ratio between leaves and fruit, i.e 142:1. The changes of nutrient content during fruit development were found in potassium (K) and calcium (Ca), B (boron), Cu (copper), Zn (zinc) which have a critical role in fruit set process. Limitation of sugar translocation in the beginning of fruit development stage was occurred. It shows by the high content of sugar in leaves along with the low content of sugar in mangosteen fruit. The highest glucose and fructose content in mangosteen fruit was found on the beginning of maturation stage.

KARAKTER DAN PRODUKSI TIGA AKSESI TALAS DENGAN PENAMBAHAN DOSIS BAHAN ORGANIK Ridwan Diaguna; Edi Santosa; Trikoesoemaningtyas Trikoesoemaningtyas; Ni Made Armini Wiendi; Didy Sopandie; Sobir Sobir; Eny Widajati
Jurnal Agrotek Tropika Vol 12, No 1 (2024): JURNAL AGROTEK TROPIKA VOL 12, Februari 2024
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v12i1.6728

Perubahan iklim dan keberlanjutan merupakan tantangan besar dalam produksi pangan, yang didominasi sumber pangan biji-bijian yang rentan terhadap perubahan iklim. Sumber karbohidrat umbi dianggap lebih tahan dan mudah beradaptasi dengan tantangan tersebut. Talas merupakan salah satu potensi besar untuk memenuhi kebutuhan pangan dengan nilai gizi yang tinggi. Penelitian bertujuan untuk mengevaluasi pengaruh penambahan dosis bahan organik terhadap karakter morfologi talas, dan hubungan karakter morfologi dan umbi yang dihasilkan, serta menentukan dosis yang tepat untuk budidaya talas di Indonesia. Penelitian menggunakan rancangan acak lengkap faktor tunggal yaitu dosis bahan organik, dengan lima ulangan. Dosis bahan organik terdiri dari 4 taraf yaitu 0,25 kg tanaman-1, 0,5 kg tanaman-1, 0,75 kg tanaman-1, dan 1 kg tanaman-1. Bahan organik (BO) meningkatkan pertumbuhan vegetatif, umbi atribut dan produksi bibit. BO meningkatkan pertumbuhan vegetatif kuantitatif. Dosis sekitar 0,5 - 1 kg lubang-1 diidentifikasi sebagai dosis yang tepat untuk pertumbuhan vegetatif, umbi atribut dan produksi bibit talas. Ada korelasi positif antara pertumbuhan vegetatif, atribut umbi dan produksi bibit. Tinggi tanaman, ukuran daun, dan diameter batang sangat penting untuk menentukan perkembangan umbi, dan selanjutnya menyebabkan tingginya produksi bibit.

Diversity of 17 Genotypes of Taro Based on Anatomy and Nutritional Value of Tuber Cahyanti, Lutfy Ditya; Didy Sopandie; Edi Santosa; Heni Purnamawati
HAYATI Journal of Biosciences Vol. 31 No. 3 (2024): May 2024
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.31.3.465-473

Indonesia is one of the countries with the greatest diversity of taro variety, while the study of taro's morphology and nutritional characteristics is limited. The aim of this study was to evaluate the anatomical of plant and nutritional value of taro tuber. This research observed fourteen genotypes of Colacasia esculenta (7 Eddoe types, 7 Dasheen types) and 3 Xanthosoma genotypes. In three blocks of replications, the eddoe and Xanthosoma genotypes were cultivated using cormel and the dasheen genotypes with sucker. Plant anatomy (leaf, stem, and root) and tuber nutritional characteristics were analyzed. From this research, explained that stomata and epidermis number, length from stomata and epidermis, number leaf epidermis, length of leaf and stem epidermis, also length of root epidermis, endodermis, cortex, and stele among 17 genotypes of taro were statistically different. The diversity of taro based on the nutrition content of tuber between 17 genotypes of taro was considered high, as represented by water, ash, fat, protein, carbohydrate, energy, and glucomannan, which were statistically different.

KAPABILITAS PEMASARAN DINAMIS DAN PENGARUHNYA PADA KINERJA INDUSTRI KREATIF PASCABENCANA Hadi Purnomo; Edi Santosa
Jurnal Riset Manajemen dan Bisnis Vol. 10 No. 2 (2015): Jurnal Riset Manajemen dan Bisnis
Publisher : Fakultas Bisnis Universitas Kristen Duta Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21460/jrmb.v10i2.204

ABSTRACT Environmental dynamics shown by the uncertain situation faced by the company. Uncertain situation due to a catastrophic event is one of the factors that need to be anticipated by the company. This study aimed to analyze the effect of dynamic marketing capabilities to the performance of the creative industries and the dynamic moderating influence of the environment on their relationship in situations of disaster that struck the Yogyakarta area.This study was conducted with 103 respondents. Respondents include business entrepreneurs of creative industries in Yogyakarta, especially in small and medium business group. Hypothesis testing is done by regression analysis and regression analysis moderation. The results showed only two of the four hypotheses were supported, where strategic flexibility significantly affect firm performance, while dynamic environment do not moderate the relationship between the two. Keywords: Dynamic Marketing Capability, Market Orientation, Strategic Flexibility, Environmental Dynamism, and Firm Performance . ABSTRAK Dinamika lingkungan ditunjukkan dengan adanya situasi yang tidak menentu yang dihadapi oleh perusahaan. Situasi yang tidak menentu akibat peristiwa bencana merupakan salah satu faktor yang perlu diantisipasi oleh perusahaan. Penelitian ini bertujuan untuk menganalisis pengaruh kapabilitas pemasaran dinamis terhadap kinerja industri kreatif dan pengaruh moderasi kedinamisan lingkungan terhadap hubungan keduanya dalam situasi pascabencana yang melanda wilayah Yogyakarta. Penelitian ini dilakukan dengan 103 responden. Responden penelitian meliputi pengusaha bisnis industri kreatif di Yogyakarta, khususnya dalam kelompok usaha kecil dan menengah . Uji hipotesis dilakukan dengan regression analysis dan moderation regression analysis. Hasil penelitian menunjukkan hanya dua dari empat hipotesis yang didukung, dimana strategic flexibility berpengaruh secara signifikan terhadap firm performance, adapun dynamic environment tidak memoderasi hubungan keduanya. Kata kunci: Kemampuan Pemasaran Dinamik, Orientasi Pasar, Fleksibilitas Strategis, Dinamisme Lingkungan Dan Kinerja Perusahaan

Effect of Different Nitrogen and Potassium Rates on Agronomic Characters of Aloe indica Kazi Liaquat Hossain; Md. Abdul Wadud; Md. Abul Kashem; Edi Santosa; Md. Shajahan Ali
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 1 (2007): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

A field study was conducted to investigate the growth of Aloe indica with different rates of nitrogen and potassium fertilizers at the Germplasm Centre, Department of Horticulture, Bangladesh Agricultural University. Treatments consisted of 0, 200 and 300 kg nitrogen/ha and 0, 100 and 200 kg potassium/ha. The rates of nitrogen and potassium had significant effect on the leaf production of Aloe indica when compared to control. Leaf yield of Aloe indica was highest at application of nitrogen at rate 200 kg/ha and potassium at rate 100 kg/ha. Leaf protein content was 12.71% higher at 200 kg N/ha and 8.47% higher at 300 kg N/ha compared to control. Potassium application at rate of 100 and 200 kg/ha produced 4.86 % and 8.51% higher leaf protein content than the control, respectively. It is recommended to apply nitrogen at rate 200 kg/ha and potassium at rate 100 kg/ha for leaf production of Aloe indica. Key words: Aloe indica, chemical fertilizers, leaf nitrogen, protein content, potassium content

Growth and Production of Amorphophallus paeoniifolius Dennst. Nicolson from Different Corm Weights Edi Santosa; Nobuo Sugiyama
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 2 (2007): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The effect of different seed corm weight on the growth and production of elephant foot yams (Amorphophallus paeonifolius Dennst. Nicolson) were studied. Two forms of corm with same weight were prepared, i.e., whole corm and vertically sectioned by 1/2. The fresh mass of each whole corm and corm section was the same. Six different corm weights were compared, i.e., 50, 100, 200, 500, 1000 and 2000 g. Growth and development of elephant foot yam were determined by corm weigth, large seed corm produced larger leaf and fresh mass of daughter corms. On the contrary, number of leaf decreased with increasing seed corm weight. Plants from whole seed corms emerged earlier and they were larger than those from the sectioned corms, irrespective of weight. Plants from small sized whole corm emerged earlier than the larger ones. Dissecting the main bud caused the development of lateral buds, resulted in a delay of leaf emergence. The lower yield obtained by the use of sections might be related to the late emergence leading to shorter vegetative period in the field. In the cultivation, it is recommended to use whole seed corms of 100 or 200 g. Key words : Elephant foot yams, tuber crop, Araceae, corm weight, tuberization rate

Effect of Tree Litter Application on Lowland Rice Yield in Bangladesh Kazi Liaquat Hossain; Mohammad Abdul Wadud; Edi Santosa
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 3 (2007): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The effect of tree litters on rice yield (cv. BR11) was evaluated in the study. Four kinds of tree litter, i.e., ipil-ipil or lamtoro (Leucaena leucocephala (Lamk) De Witt), sissoo (Dalbergia sissoo), akashmoni (Acacia auriculiformis) and mander (Erythrina orientalis) were incorporated into the soil 15 days before transplanting at rate of 5 ton/ha supplemented with inorganic fertilizers (83 kg N, 48 kg P205, 42 kg K20, 10 kg S and 3.6 kg Zn/ha). In the control plots only recommended inorganic fertilizer were applied. Results showed that tree litter application had a significantly positive effect on the yield parameters such as plant height, panicle length, tillers per hill, filled grain and index of 1000-grain weight. Grain yield of plots treated with ipil-ipil, sissoo, akashmoni and mander was 5.61, 4.49, 4.95 and 5.36 ton/ha, and the yield increased over control plots 39.6, 11.7, 23.1 and 33.3%, respectively. It is worthy to note that addition of tree litter to inorganic fertilizer produced significantly higher yield than inorganic fertilizers solely. Among the tree litter, ipil-ipil and mander had the greatest increase in rice yield, while akashmoni was intermediate and sissoo was the least. Key words: Agroforestry residues, rice, sustainable agriculture and tree-based cropping

Pengaruh Alelopati Jarak Pagar (Jatropha curcas L.) terhadap Perkecambahan Benih Jagung, Tomat dan Padi Gogo Ince Raden; Bambang S. Purwoko; Edi Santosa; , Hariyadi; Munif Ghulamahdi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 1 (2008): Buletin Agronomi
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 evaluate the effect of extract of leaves, seed and root of physic nut on the germination of corn, tomato, and upland rice. Research was conducted by using Complete Randomized Block Design with two factors, i.e., plant organ (leaves, seed and root) and species (corn, tomato and upland rice). The results showed that extract of 36 g dried organ/200 ml water (0.18 g/ml water) affected seed germination of corn, tomato, and upland rice. Extract of leaves tended to reduce percentage of corn seed germination (55.30% vs 70.68%), and extract of root to reduce germination of tomato and upland rice, 52.70% and 68.67%, compared to control 76% and 84%, respectively. Key words: Plant organ extract, physic nut, germination

Efektivitas Strangulasi terhadap Pembungaan Tanaman Jeruk Pamelo ‘Cikoneng’ (Citrus grandis (L.) Osbeck) pada Tingkat Beban Buah Sebelumnya yang Berbeda Muhammad Thamrin; Slamet Susanto; Edi Santosa
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 1 (2009): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Biannual bearing fruit is a common phenomenon in tropical fruit trees. However, effectiveness of flowering induction on those fruits is still lack of study. The ojective of the research was to study the effectiveness of flowering induction on pummelo of different fruit load on previous year. Field experiment was conducted at farmer's orchad Bantarmara village, Cisarua, Sumedang Region, West Java (300 m above sea level) from August 2007 to April 2008. Experiment was carried out using Completely Randomize Block Design. Experiment was combination of high crop load and less crop load with strangulation position at main stem and primary branches. The results showed that crop load of previous year (higher and less) with strangulation position at primary branches had significant response to the number of flower clusters, flower buds, bloming flower, fruits formed, and fruit sets as compared to control, when strangulated at primary branches. Nevertheless, amount of fruit sets, level of greenness leaf and leaf area seened were not determined by fruit load non position of strangulation. This finding implies that fruit load management is an important factor in determining the success of flowering induction using strangulation. Key words: fruit load, strangulation, pummelo, flowering induction

Simpanan Biji Gulma dalam Tanah di Perkebunan Teh pada Berbagai Tahun Pangkas Edi Santosa; Sofyan Zaman; Intan Dewi Puspitasari
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 1 (2009): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Through understanding on seed bank, tea plantation manager enables to plan better weed control. The objective of the study was to identify seed bank of weeds at different ages of tea plantation after prunning. The study was conducted at Perkebunan Teh Tambaksari, Subang, Indonesia. Soil samples were collected from tea field of different pruning years (TP0-2 months after pruning, TP1-16 months after pruning, TP2- 28 months after pruning, and TP3-40 months after pruning) and then watered regularly and exposed to direct sunshine to stimulate propagule germination. Results showed that seed banks were found in all soil samples, indicated that effectiveness of weed control was low. The highest seed bank was found at TP1. Most seed bank was seed, they were Ageratum conyzoides which dominated field of TP0 (SDR 36.58%), TP1 (35.90%), TP2 (41.79%) and TP3 (24.82%), followed by Borreria latifolia with SDR values were 19.50%, 27.26%, 29.40% and 16.14%, respectively. Some species stored both vegetative and generative propagules such as Cyperus sp. and Cyperus cyperoides with SDR value 20.33 % only dominated at age of TP0. Seed bank at area of TP1 and TP2 had high value of community coefficient, i.e., 77.22%, showed both fields had high similarity. This finding implies that effective weed control increases when the control is conducted before the weeds bear seed, where mostly less than 45 days after emergence. Furthermore, thirteen weeds had no seed bank in the field, indicates that weed problem in tea plantation was composed of seed bank and weed propagules from other sites. Key words: Pruning year, seed bank, tea plantation, weed control

Co-Authors , Hariyadi Bambang S. Purwoko Deden Derajat Matra Dhika Prita Hapsari Didy Sopandie Eny Widajati Faqih Udin Hadi Purnomo Ince Raden Intan Dewi Puspitasari Kazi Liaquat Hossain Lutfy Ditya Cahyanti, Lutfy Ditya Md. Abdul Wadud Md. Abul Kashem Md. Shajahan Ali Mohammad Abdul Wadud Muhammad Thamrin Munif Ghulamahdi Ni Made Armini Wiendi Nobuo Sugiyama Roedhy Poerwanto Slamet Susanto Sobir Sobir Sofyan Zaman Trikoesoemaningtyas

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