Study on the off-season shallot seed storage using biological pesticides in Kretek district, Bantul regency, Yogyakarta special region

Farmers in the Samiran village use chemical pesticides to store their shallots. The purpose of this study was to examine the storage of shallot seeds from the off-season crops using biological pesticides. The research was conducted in March 2018 in the Ngudi Makmur farmer group. The research materials used were red onion varieties and biological pesticide of neem. The experimental design used was a completely randomized design with 3 factors with 2 replications. The factors were the type of biological pesticide (liquid and powder), storage treatment (hanging and in the basket), and the shallot varieties (Bimo, Crok Kuning, and Tajuk). The parameters observed were weight loss, damage level, growth capacity, and chemical composition. The results showed that the lowest weight loss was the storage of shallot off-season in the bucket with liquid pesticides on the Crok Kuning variety, while the high growth power test results were hanging. The treatment of biological pesticides can reduce the percentage of onion weight loss, while the use of powdered neem leaves can affect the weight loss, but it is not too high compared to the control. Hanging storage is better than basket storage because yield loss due to weight loss in basket is higher.

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PENGARUH UMUR PANEN RIMPANG TERHADAP PERUBAHAN FISIOLOGI DAN VIABILITAS BENIH JAHE PUTIH BESAR SELAMA PENYIMPANAN

Jurnal Penelitian Tanaman Industri ◽

10.21082/littri.v21n1.2015.17-24 ◽

2016 ◽

Vol 21 (1) ◽

pp. 17

Author(s):

DEVI RUSMIN ◽

M.R. SUHARTANTO ◽

SATRIYAS ILYAS ◽

DYAH MANOHARA ◽

ENY WIDAJATI

Keyword(s):

Weight Loss ◽

Seed Viability ◽

High Growth ◽

Dry Weight ◽

Zingiber Officinale ◽

Shoot Height ◽

Harvesting Time ◽

Seed Technology ◽

Randomized Design ◽

Growth Ability

ABSTRAK Salah satu faktor yang menentukan daya simpan benih jahe putih besar (JPB) adalah mutu. Mutu benih sangat ditentukan oleh tingkat kemasakan rimpang. Penelitian bertujuan untuk mengetahui pengaruh umur panen terhadap perubahan fisiologi dan viabilitas benih selama penyimpanan. Penelitian dilaksanakan di Rumah Kaca dan Laboratorium Teknologi Benih, Balai Penelitian Tanaman Rempah dan Obat serta Laboratorium Pascapanen IPB Bogor, mulai bulan Juli 2012 sampai dengan Februari 2013. Rancangan yang digunakan adalah acak lengkap (RAL) dengan lima ulangan. Perlakuan yang diuji adalah tiga tingkat umur panen benih 7, 8, dan 9 bulan setelah tanam (BST). Pengamatan dilakukan terhadap perubahan fisiologis (penyusutan bobot, persentase rimpang bertunas, tunas, kadar air, dan laju respirasi), serta viabilitas rimpang benih (daya tumbuh, tinggi, dan bobot kering bibit). Hasil penelitian menunjukkan rimpang benih umur 7 dan 8 BST mempunyai daya simpan terbaik karena menghasilkan masing-masing total angka penyusutan bobot lebih rendah (24,65 dan 25,25%) dan tunas lebih pendek (0,30 dan 1,08 cm) dibandingkan dengan umur panen 9 BST (27,13% dan 1,62 cm), selama 4 bulan disimpan. Masa dormansi rimpang benih JPB mulai pecah setelah mengalami periode simpan 2 bulan. Pertumbuhannya mulai seragam setelah 3 bulan simpan. Umur panen jahe 7 dan 8 BST mempunyai derajat dormansi yang lebih tinggi dibanding 9 BST. Rimpang benih umur panen 7, 8, dan 9 BST mempunyai daya tumbuh tinggi (>95%) dan pertumbuhan bibit seragam setelah 3 bulan disimpan. Kata kunci: Zingiber officinale Rosc., penyimpanan, benih, perubahan fisiologis, viabilitasABSTRACT One of the factors that determine the storability of seed rhizome of white big ginger (WBG) is quality. The quality is determined by the maturity levels of seed rhizome. The aim of the experiment was to observe the effect of harvesting time on physiological changes and seed viability of WBG seed rhizomes during the storage. The experiment was conducted at Green House and Seed Technology Laboratory of Indonesian Spice and Medicinal Crops Research Institute, Bogor and Postharvest Laboratory, IPB, from July 2012 to February 2013. The experiment was arranged in a completely randomized design with five replications. The treatments tested were three levels of WBG seed rhizome harvesting time: 7, 8, and 9 month after planting (MAP). Variables observed were physiological changes of seed rhizomes during the storage (weight loss, sprouting percentage, shoot height, respiration rate, and moisture content) and viability (growth ability, height, and dry weight of the seedling). The results showed that seed rhizomes at 7 and 8 had the best storability, since it was produced each low rate of weight loss (24.65 and 25.25%), and shoots shorter (0.3 and 1.08 cm) than 9 MAP (27.13% and 1.62 cm), for 4 months in storage. Dormancy of WBG seed rhizomes has been broken after 2 months in storage. Harvesting at 7 and 8 showed a degree of dormancy higher than the harvesting age 9 MAP. Harvesting time at 7, 8, and 9 MAP had high growth ability (> 95%) and uniform seedling growth after 3 months in storage. Keywords: Zingiber officinale Rosc., storage, seed, physiological changes, viability

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PEMANFAATAN PESTISIDA NABATI PADA PENGENDALIAN HAMA PLUTELLA XYLOSTELLA TANAMAN SAWI (Brassica juncea L.) MENUJU PERTANIAN RAMAH LINGKUNGAN

Jurnal Sains Dasar ◽

10.21831/jsd.v6i1.12998 ◽

2017 ◽

Vol 6 (1) ◽

pp. 36

Author(s):

Suhartini Suhartini ◽

Putu Suryadarma ◽

Budiwati Budiwati

Keyword(s):

Nicotiana Tabacum ◽

Brassica Juncea ◽

Plutella Xylostella ◽

Positive Control ◽

Negative Control ◽

Leaf Damage ◽

Piper Betle ◽

Randomized Design ◽

Biological Pesticide ◽

Chemical Pesticides

Abstrak Penggunaan pestisida kimia telah banyak memberikan dampak negatif pada lingkungan, sehingga diperlukan penggunaan pestisida nabati untuk menuju pertanian yang ramah lingkungan. Di desa ditemui banyak jenis daun yang dapat digunakan sebagai pestisida hayati, maka dari itu penelitian ini bertujuan untuk mengetahui efektivitas dari ekstrak pestisida nabati yaitu daun tembakau, tapak liman, daun kayu kuning dan daun sirih hijau terhadap mortalitas hama Plutella Xylostella pada tanaman sawi (Brassica juncea L.) berat basah sawi dan kerusakan daun sawi.Penelitian ini menggunakan Rancangan Acak Lengkap dengan perlakuan jenis tanaman sebagai pestisida Nabati . Perlakuan yang digunakan ada 6 macam (taraf) yaitu kontrol negatif (P0), daun tembakau (P1), tapak liman (P2), daun kayu kuning (P3), daun sirih hijau (P4) dan pestisida kimia sebagai kontrol positif (P5) dengan masing-masing kadar 10 %. Parameter yang diamati adalah mortalitas hama, berat basah sawi dan tingkat kerusakan daun sawi. Analisis dilakukan dengan anova satu arah.Hasil penelitian menunjukkan ekstrak daun tembakau ((Nicotiana tabacum), tapak liman ((Elephantopus sp.), daun kayu kuning (Arcangelisia flava L.) dan daun sirih hijau (Piper betle Linn.) dengan konsentrasi 10 persen dari ekstrak belum memberikan pengaruh nyata pada mortalitas hama Plutella xylostella, berat basah sawi ((brassica juncea l.) dan tingkat kerusakan daun sawi (brassica juncea l.). Ekstrak daun yang paling berpengaruh pada mortalitas Plutella xylostella secara berurutan adalah tembakau, daun sirih, daun kayu kuning dan tapak liman. Sedangkan pada berat basah sawi (brassica juncea l.) secara berurutan daun kayu kuning, daun sirih hijau, daun tapak liman dan daun tembakau. Sementara terhadap tingkat kerusakan daun sawi mulai yang paling kecil rusaknya secara berurutan adalah daun sirih hijau, daun tembakau, tapak liman dan daun kayu kuning. Kata Kunci: Pestisida Nabati, ekstrak, Plutella xylostella, mortalitas, sawi (Brassica juncea) ABSTRACTThe use of chemical pesticides has many negative impacts on the environment, it is necessary for the use of biological pesticide towards sustainable agriculture or environmentally friendly agriculture. In the village were encountered many types of leaves that can be used as a biological pesticide, and therefore this study aims to determine the effectiveness of pesticide plant extracts of the leaves of some plants covering the leaves of tobacco, elephantopus, yellow wood and green betel on mortality of Plutella xylostella pests in plants mustard greens (Brassica juncea L), heavy wet mustard and mustard leaf damage This study uses a completely randomized design with the treatment of various crops as a pesticide vegetable. The treatments used 6 kinds (degree) ie negative control (P0), the leaves of tobacco (P1), the leaves of elephantopus (P2), the leaves of yellow wood (P3), the leaves of greens betel (P4) and chemical pesticides as a positive control (P5) with each grade of 10 %. Parameters measured were mortality pests, heavy wet mustard greens and mustard greens leaf damage rate. The analysis was performed by one-way ANOVA. The results showed that the extract from the leaves of tobacco (Nicotiana tabacum), the leaves of elephantopus, the leaves of yellow wood (Arcangelisia flava L.) and the leaves of green betel (Piper betle Linn.) With a 10 percent concentration of the extract on a variety of leaves are not yet significant effect on mortality pests Plutella xylostella, heavy wet of mustard greens (brassica juncea l.) and severity of leaf mustard greens (brassica juncea l.). The leaf extract the most influence on mortality Plutella xylostella sequential is an extract of the leaves tobacco, the leaves of greens betel, the leaves of yellow wood and the leaves of elephantopus. While the effect on weight of wet mustard greens (Brassica juncea l.) in order are as follows: the leaves of yellow wood, the leaves of green betel, the leaves of elephantopus, and the leaves of tobacco. Meanwhile the level of damage to the mustard greens leaves are starting from the smallest breakdown in order are the leaves of green betel, the leaves of tobacco, the leaves of elephantopus and the leaves of yellow wood. Keywords: Pesticides Vegetable, extract, Plutella xylostella, mortality, Brassica juncea

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Pengaruh Kemasan Dan Absorber Terhadap Umur Simpan Buah Pisang Ayan (Musa Acuminata)

Jurnal Ilmiah Mahasiswa Pertanian ◽

10.17969/jimfp.v2i4.5495 ◽

2017 ◽

Vol 2 (4) ◽

Author(s):

Yazidul Bustami ◽

Ratna Ratna ◽

Bambang Sukarno Putra

Keyword(s):

Weight Loss ◽

Shelf Life ◽

Water Content ◽

Silica Gel ◽

Rice Husk ◽

Musa Acuminata ◽

Randomized Design ◽

Completely Randomized Design ◽

Value Of Water ◽

Materials Used

Abstrak. Bahan yang digunakan adalah plastik polipropilen, polietilen dan pisang barangan yang diporoleh dari petani di Sare Aceh Besar. Umur panen 100 hari-120 hari setelah pembungaan. Penelitian menggunakan menggunakan Rancangan Acak Lengkap (RAL). Perlakuan yang dilakukan pada penelitian ini adalah perlakuan kemasan Polipropilen (P1), Polietilen (P2), dan dengan perlakuan pemberian silika gel (A1) dan arang sekam padi (A2) pada setiap kemasan. Perlakuan ini dilakukan sebanyak 3 kali ulangan. Sehingga terdapat 12 satuan percobaan. Hasil penelitian diperoleh Susut bobot berkisar antara 0,32% nilai tersebut didapat selama 15 hari penyimpanan. Tingkat kekerasan berkisar antara 3,15-2,03 Kg/cm2. Nilai kadar air berkisar antara 68,67-75,89%, anoalisis sidik ragam menunjukkan bahwa kombinasi perlakuan silika gel dan arang sekam berpengaruh nyata terhadap kadar air pisang. Nilai TPT meningkat berkisar antara 18,07-7,50%.Utilization Packaging And Shelf Life Absorber Against Chicken Banana (Musa Acuminata)Abstract. The materials used are polypropylene, polyethylene and banana plastic from farmers in Sare Aceh Besar. Harvest age 100 days-120 days after flowering. The study used using Completely Randomized Design (RAL). The treatments were Polypropylene (P1), Polyethylene (P2), and by treatment of silica gel (A1) and rice husk charcoal (A2) on each package. This treatment is done as much as 3 times repetition. So there are 12 experimental units. The result of this research is weight loss ranging from 0,32% the value obtained for 15 days storage. The level of hardness ranges from 3.15 to 2.03 Kg / cm2. The value of water content ranged from 68,67-75,89%, fingerprint anoalysis showed that combination of treatment of silica gel and charcoal husk significantly affected banana water content. The value of TPT increased between 18.07-7.50%.

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Hydrothermic Treatment Effects on Some Ripening Changes on Mango Fruits (Mangifera indica L) Crillo de Bocado' during Storage: I. Physical Parameters

HortScience ◽

10.21273/hortsci.33.3.520d ◽

1998 ◽

Vol 33 (3) ◽

pp. 520d-520

Author(s):

Oswaldo Valor ◽

Juan E Manzano

Keyword(s):

Weight Loss ◽

Skin Color ◽

Storage Temperature ◽

Mangifera Indica ◽

Physical Parameters ◽

Fresh Weight ◽

Randomized Design ◽

High Storage Temperature ◽

High Storage ◽

Green Stage

Mango fruits `Criollo de Bocado' harvested at the mature-green stage were treated with a hydrothermic treatment of 55 °C for 3 min and stored for 20 days to temperatures of 10 ± 2, 15 ± 2, and 28 ± 2 °C. A randomized design 2 × 3 × 4 with three replications was used. Physical parameters such as color (L*, a*, b*), firmnness, and fresh weight loss were studied. Results reported that mango fruits stored at 10.2 and 15.2 °C showed the highest firmness values. Skin color changed very fast during the first storage days, while pulp color required more time to achieve mature ripe color. Fresh weight loss tended to increase with storage time and with high storage temperature. The lowest storage temperture retarded softening in mango fruits and firmnness reached the highest values.

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Pengaruh Perlakuan Waktu dan Suhu Penyimpanan Dingin terhadap Mutu Kubis Bunga (Brassica Oleracea Var. Botrytis L.)

Jurnal BETA (Biosistem dan Teknik Pertanian) ◽

10.24843/jbeta.2020.v08.i01.p17 ◽

2019 ◽

Vol 8 (1) ◽

pp. 138

Author(s):

Chyntia Wulandari Eka Saputri ◽

I. A. Rina Pratiwi Pudja ◽

Pande Ketut Diah Kencana

Keyword(s):

Weight Loss ◽

Shelf Life ◽

Cold Storage ◽

Storage Time ◽

Consumption Rate ◽

Storage Temperature ◽

Treatment Time ◽

O2 Consumption ◽

Damage Level ◽

Four Levels

Tujuan dari penelitian ini adalah untuk menentukan waktu perlakuan optimal dan suhu penyimpanan dingin untuk mutu kubis bunga. Penelitian ini menggunakan rancangan acak lengkap (RAL) yang terdiri dari dua faktor, faktor pertama adalah suhu yang digunakan dan faktor kedua adalah waktu selama show case. Faktor pertama terdiri dari dua level, yaitu (P1): show case temperature 8oC, dan (P2): show case temperature 15oC dan tambah kontrol (P0). Faktor kedua terdiri dari empat level, yaitu (A0): penyimpanan selama 0 jam, (A1): penyimpanan selama 12 jam, (A2): penyimpanan selama 16 jam, (A3): penyimpanan selama 20 jam dan diulang untuk 3 kali ulangan. Kubis bunga sebagai kontrol disimpan pada suhu kamar (28 ± 1 ?). Parameter kualitas yang diamati dalam penelitian ini termasuk penurunan berat badan, tingkat konsumsi O2, warna (warna berbeda), uji organoleptik termasuk umur simpan dan tingkat kerusakan. Hasil penelitian menunjukkan parameter penurunan susut bobot, laju konsumsi O2, warna, umur simpan, tingkat kerusakan pada suhu perlakuan suhu terbaik adalah suhu 8 ? dan waktu penyimpanan 20 jam (P1A3).Kata kunci: kembang kol, waktu penyimpanan, suhu penyimpanan dingin The purpose of this study was to determine the optimal treatment time and cold storage temperature for the quality of cabbage flowers. This study uses a completely randomized design (CRD) consisting of two factors, the first factor is the temperature used and the second factor is the time during the showcase. The first factor consists of two levels, namely (P1): showcase temperature of 8oC, and (P2): showcase temperature of 15oC and added a control (P0). The second factor consists of four levels, namely (A0): storage for 0 hours, (A1): storage for 12 hours, (A2): storage for 16 hours, (A3): storage for 20 hours and repeated for 3 replications. Flower cabbage as control was stored at room temperature (28 ± 1 ?). The quality parameters observed in this study included weight loss, O2 consumption rate, color (color different), organoleptic tests including shelf life and damage level. The results showed the parameters of weight loss, O2 consumption rate, color, shelf life, damage rate at the best temperature of 8 ? and storage time of 20 hours (P1A3). Keywords: cauliflower, storage time, cold storage temperature

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Physical Properties of Cement Mortar Containing Waste Ash

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.804.129 ◽

2015 ◽

Vol 804 ◽

pp. 129-132

Author(s):

Sumrerng Rukzon ◽

Prinya Chindaprasirt

Keyword(s):

Compressive Strength ◽

Fly Ash ◽

Rice Husk ◽

Rice Husk Ash ◽

Cement Mortar ◽

Ash Content ◽

Water Requirement ◽

Test Results ◽

Pozzolanic Material ◽

Materials Used

This research studies the potential for using waste ash from industrial and agricultural by-products as a pozzolanic material. Classified fly ash (FA) and ground rice husk ash (RA) were the materials used. Water requirement, compressive strength and porosity of cement mortar were investigated. Test results indicated that FA and RA (waste ash) have a high potential to be used as a good pozzolanic material. The water requirement of mortar mix decreases with the increases in fly ash content. For ground rice husk ash (RA), the water requirement of mortar mix increases with the increases in rice husk ash content. In addition, the reduction in porosity was associated with the increase in compressive strength.

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PERCEPATAN PENGOMPOSAN TANDAN KOSONG KELAPA SAWIT (TKKS) DENGAN PEMBERIAN UREA (Acceleration Composting Empty Fruit Bunches (Efb) With The Application Of Urea)

AgriPeat ◽

10.36873/agp.v18i02.14 ◽

2019 ◽

Vol 18 (02) ◽

pp. 113-124

Author(s):

Journal Journal

Keyword(s):

Weight Loss ◽

Water Content ◽

Palm Oil ◽

Organic N ◽

Empty Fruit Bunches ◽

Randomized Design ◽

Compost Application ◽

Completely Randomized Design ◽

Total P

ABSTRAK Kelapa sawit merupakan tanaman perkebunan yang memegang peranan penting dalam industri pangan. Luas perkebunan kelapa sawit di Indonesia pada tahun 2014 mencapai 10 juta Ha. Pertumbuhan yang pesat diikuti dengan produksi crude palm oil (CPO) dan palm karnel oil (PKO) yang juga meningkat, sekaligus produk sampingan berupa limbah. Salah satu limbah pabrik kelapa sawit yang jumlahnya besar adalah tandan kosong kelapa sawit (TKKS). Tandan kosong kelapa sawit merupakan limbah organik yang berpotensi dimanfaatkan dibidang pertanian. Akan tetapi, TKKS memiliki nilai C/N yang cukup tinggi, akibatnya sukar dan lama untuk terdekomposisi. Salah satu cara pemanfaatan TKKS adalah dengan dilakukan pengomposan dengan pengkayaan urea. Diharapkan dengan perlakuan tersebut TKKS akan cepat terdekomposisi dan dapat segera dimanfaatkan oleh tanaman. Penelitian ini bertujuan untuk (1) mengetahui pengaruh pemberian urea terhadap pengomposan TKKS dan (2) mengetahui pengaruh peningkatan dosis urea terhadap kualitas kompos TKKS. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) faktor tunggal dengan 5 perlakuan, yaitu U1 (urea 0 g setara dengan nilai C/N=), U2 (urea 30,9 g setara dengan nilai C/N=), U3 (urea 79,3 g setara dengan nilai C/N=), U4 (urea 176,1 g setara dengan nilai C/N=) dan U5 (urea 466,3 g setara dengan C/N = ) dan 9 ulangan, sehingga diperoleh 45 satuan percobaan. Hasil penelitian menunjukan bahwa pemberian urea berpengaruh sangat nyata terhadap susut bobot, kadar air, nilai pH kompos, C-organik, N-total, P-tersedia, dan nilai C/N, selain itu pemberian urea mengakibatkan terjadi perubahan tekstur dan warna pada kompos TKKS. Pemberian dosis urea 466,3 g mampu meningkatkan kandungan N-total, serta menurunkan nilai C/N dan nilai pH kompos. Pemberian dosis urea 79,3 g atau setara dengan C/N = mampu meningkatkan kandungan P-tersedia dan kadar air, menurunkan susut bobot dan kandungan C-organik, serta menunjukan perubahan tekstur dan warna yang lebih baik. Kata kunci: tanda kosongkelapa sawit (TKSS), kompos, urea ABSTRACT Empty fruit bunches (EFB) is a solid wastes produced in large quantity from palm oil industry. Empty fruit bunches can be used as compost material, additionally difficult to decompose because it contain cellulose, hemicellulose, and lignin, as well as value of ratio C/N is high. Use EFB as compost material through the provision of urea has been done in this research. Urea are expected to reduce the value of ratio C/N and became a starter for microbial decomposers. The purpose of this research were (1) to determine the effect of urea on composting of EFB and (2) to determine the effect of increasing doses of urea to the quality of compost of EFB. This research was used a single factor of Completely Randomized Design (CRD) with 5 treatments, namely U1 (urea 0 g), U2 (urea 30,9 g), U3 (urea 79,3 g), U4 (urea 176,1 g), and U5 (urea 466,3 g), and 9 replications, until result 45 experimental units. The result showed that urea significant effect on weight loss, water content, value of pH compost, C-organic, N-total, P-available, and value of ratio C/N, besides urea resulted Widodoe, K. dkk Percepatan Pengomposan Tandan Kosong Kelapa Sawit…..…. 114 in a change in texture and color on the compost EFB. Application of urea 466,3 g was able to increase the content of N-total, reduce the value of ratio C/N and the value of pH compost. Application of urea 79,3 g can improve the content of P-available and water content, reduce the weight loss and the content of C-organic, and showed the changes in texture and color as better. Keywords: empty fruit bunches, compost, urea

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Shear strength of disturbed regions with corroded stirrups in reinforced concrete beams

Canadian Journal of Civil Engineering ◽

10.1139/l10-031 ◽

2010 ◽

Vol 37 (8) ◽

pp. 1045-1056 ◽

Cited By ~ 20

Author(s):

Christopher Suffern ◽

Ahmed El-Sayed ◽

Khaled Soudki

Keyword(s):

Shear Strength ◽

Reinforced Concrete ◽

Concrete Beams ◽

Corrosion Damage ◽

Reinforced Concrete Beams ◽

Test Results ◽

Accelerated Corrosion ◽

Damage Level ◽

Three Point Bending ◽

Shear Span

This paper reports experimental data on the structural performance of disturbed regions in reinforced concrete beams with corrosion damage to the embedded steel stirrups. A total of 15 reinforced concrete beams were constructed and tested. The test beams were 350 mm deep, 125 mm wide, and 1850 mm long. The beams were tested in three-point bending under a simply supported span of 1500 mm. Nine beams had the embedded stirrups subjected to accelerated corrosion. The test variables were the corrosion damage level and the shear span-to-depth ratio. The test results indicated that the corroded beams exhibited reduced shear strength in comparison to the uncorroded control specimens. The shear strength reduction was up to 53%. Furthermore, the reduction in shear strength due to the corrosion was found to be greater at smaller shear span-to-depth ratios.

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Efektivitas Metode Seleksi Pedigree dan Modified Bulk pada Tiga Populasi Sorgum (Sorghum bicolor [L.] Moench)

Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) ◽

10.24831/jai.v47i3.27661 ◽

2020 ◽

Vol 47 (3) ◽

pp. 275-282

Author(s):

Dewi Andriani ◽

Desta Wirnas ◽

Dan Trikoesoemaningtyas

Keyword(s):

Plant Height ◽

Agronomic Traits ◽

Test Results ◽

Selection Methods ◽

Coefficients Of Variation ◽

Significant Difference ◽

Pedigree Selection ◽

High Heritability ◽

Augmented Design ◽

Materials Used

Sorghum has a growing popularity for food, feed, biofuel, and therefore needs to be developed. The research aimed to compare the effectiveness of pedigree and modified bulk selection methods for improving yield in three sorghum populations. The genetic materials used were 60 F6 lines from three populations, namely PI 10-90-A x Numbu, PI 150-20-A x Numbu and PI 150-20-A x Kawali which had been selected using pedigree and modified bulk methods. The experiment was conducted from October 2018 to February 2019 at the Cikabayan Experimental Station of IPB University, Dramaga, Bogor. The experiment was arranged in an augmented design with six checks, namely Kawali, Numbu, PI 10-90-A, PI 150-20-A, Samurai 1, and Samurai 2 which were replicated four times. Observations were made on agronomic traits and yield. Plant height and grain weight per panicle had high heritability and large genotypic coefficients of variation. The contrast test results showed significant differences between populations in plant height, panicle length, days of harvesting and 100-seed weight. On the other hand, no significant difference was observed among selection methods, indicating that both methods were equally effective for increasing sorghum yield. The pedigree selection and modified bulk selection increased grain yield per panicle by 14.1 g and 18.2 g respectively. Bulk of the best genotypes in early generation could be an alternative of bulk selection method. Keywords: contrast test, differential selection, genotypic coefficient of variation, heritability

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Promoting Color Brightness of Clown Loach (Chromobotia macracanthus Bleeker) by Mixing Red Spinach (Amaranthus tricolor L.) Powder with Feed Stuff

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2020/v9i330160 ◽

2020 ◽

pp. 21-30

Author(s):

Ayi Yustiati ◽

Syakirah Imtinan Zurwana ◽

Achmad Rizal ◽

Yuli Andriani

Keyword(s):

Research Method ◽

Survival Rates ◽

Optimal Dose ◽

Primary Data ◽

Test Results ◽

Growth Data ◽

Amaranthus Tricolor ◽

Randomized Design ◽

Powder Addition ◽

Completely Randomized Design

The purpose of this research is to determine the optimal dose of the addition of red spinach powder to artificial feed on the brightness of clown loach. This research was conducted at Aquaculture Laboratory Building 4 Faculty of Fisheries and Marine Sciences of Universitas Padjadjaran from April to May 2020. This research method is experimental with a Completely Randomized Design consisting of four treatments and three replications. The red spinach powder addition treatment used 0%, 2%, 4%, and 6% of the feed amount. The parameters observed are color value as primary data by using Toca Color Finder, while the growth, survival rate, and water quality as support data. Color assessment results were analyzed using the Kruskal-Wallis test, if there were significant differences, Z test would be performed. Growth data and survival rates were analyzed using Analysis of Variance (ANOVA). Because the F test results were not significantly different, the Duncan test was not carried out. The results showed that the addition of 6% red spinach powder is the best treatment with an increased color brightness value of 5,63.

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