scholarly journals Efikasi Pestisida Hayati Pada Padi Varietas Tahan Tungro

2020 ◽  
Vol 5 (1) ◽  
pp. 30-38
Author(s):  
Arif Muazam ◽  
Nurkholish Nugroho
Keyword(s):  
Population Density ◽  
Active Role ◽  
Rice Crop ◽  
Disease Research ◽  
South Sulawesi ◽  
Randomized Design ◽  
Self Sufficiency ◽  
Completely Randomized Design ◽  
Predatory Insects ◽  
Experimental Garden

Sidrap as a rice granary center in South Sulawesi, plays an active role in efforts to self-sufficiency in eastern Indonesian food in particular and NKRI in general. The efforts of integrated rice cultivation have been carried out as an effort to achieve national food independence. This paper discusses the population density of green leafhoppers, predatory insects, and other pests in the Inpari 36 rice crop as tungro (new released) varieties in endangered areas, the study was carried out in the experimental garden area of Tungro Disease Research, using a Completely Randomized Design (CRD) 2 plot plots of plant varieties of 10 x 10 m2 with 4 replications. The most common adult green leafhopper (Nephotetic verescens) results in Inpari 36 varieties without bioprotector treatment. Natural predators that were fluctuated every week were dominant observations, namely: Agriocnemis spp, Micraspis sp, Conocephalus longipennis, Araenus inustus, Lycosa pseudoannulata, Oxyopes javanacus, and Tetraghenata maxilosa. While at 6-7 MST (weeks after planting) Ophionea nigrofasciata species appeared and in 7MST there were species of Anaxipa longipennis.

scholarly journals Pengaruh pemberian pupuk buatan yang berbeda terhadap kelimpahan Azolla sp.

2017 ◽  
Vol 4 (1) ◽  
pp. 33
Author(s):  
Rosdiana Rosdiana ◽  
Eva Ayuzar ◽  
Zulfikar Zulfikar
Keyword(s):  
Water Quality ◽  
Population Density ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Control Treatment ◽  
Fertilizer Plant ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Department Faculty

Penelitian ini dilaksanakan pada Bulan Januari- Febuari 2016 di Laboratorium Hatchery dan Teknologi Budidaya Program Studi Budidaya Perairan Fakultas Pertanian Universitas Malikussaleh. Adapun metode yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) non faktorial dengan 5 perlakuan 3 kali ulangan A tanpa pupuk (kontrol) ; perlakuan B kultur Azolla sp dengan pupuk NPK 1gr/3 liter ; perlakuan C kultur Azolla sp dengan Pupuk TSP 1gr/3liter; perlakuan D kultur Azolla sp dengan Campuran (Urea, TSP dan NPK) 1gr/3liter dan perlakuan E Kultur Azolla sp dengan Pupuk Urea 1gr/3liter. Parameter yang diamati pada penelitian ini  adalah kepadatan populasi Azolla sp dan parameter kualitas air. Hasil penelitian menunjukkan bahwa pemberian dosis pupuk yang berbeda memberi pengaruh terhadap pertumbuhan dan biomassa tanaman Azolla sp dimana Fhitung > Ftabel. Pupuk yang paling baik digunakan dalam kultur tanaman Azolla sp yaitu pupuk TSP, dimana dengan dosis 1 gr/3L air dapat memberi pertumbuhan yang tinggi dan perkembangan yang baik untuk tanaman Azolla sp.The research was conducted in January-February 2016 at Hatchery and Technology Laboratory Aquaculture Department, Faculty of Agriculture, Malikussaleh University. The method used in this study was completely randomized design (CRD) non factorial with 5 treatments 3 replications A without fertilizer (control); treatment B culture Azolla sp with NPK 1 g / 3 liter; culture Azolla sp C treatment with TSP1 fertilizer gr / 3 liter; Azolla sp treatment D culture with a mixture (Urea, TSP and NPK) 1 g / 3 liter and treatment E culture Azolla sp with Urea 1 g / 3 liter. The parameters observed in this study was the population density of Azolla sp, Azolla sp biomass and water quality parameters. The results showed fertilizered. with different dosages to influence the growth and biomass of Azolla sp plant where Fcount > F table. Fertilizer is best used in the culture of Azolla sp namely TSP fertilizer plant, where a dose of 1 g /3 L of water can give higher growth and good development for Azolla sp plant.

scholarly journals PENGATURAN PEMBUNGAAN TANAMAN JAMBU BIJI (Psidium guajava L.) ‘KRISTAL’ MELALUI APLIKASI WAKTU STRANGULASI YANG BERBEDA

2020 ◽  
Vol 22 (3) ◽  
pp. 243
Author(s):  
RA Diana Widyastuti ◽  
Slamet Susanto ◽  
Maya Melati ◽  
Ani Kurniawati
Keyword(s):  
Psidium Guajava ◽  
Single Factor ◽  
Flowering Induction ◽  
Flowering Response ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Leaf N Content ◽  
The Relationship ◽  
Experimental Garden ◽  
Leaf N

<p align="center"><strong>ABSTRACT</strong></p><p align="center"><strong><em> </em></strong></p><p><strong><em>Arrangement of Guava Flowering </em></strong><strong><em>(Psidium</em></strong><strong><em> g</em></strong><strong><em>uajava</em></strong><strong><em> </em></strong><strong><em>L.</em></strong><strong><em>)</em></strong><strong><em> ‘Krystal’ through the Application of Different Strangulation Times. </em></strong>The seasonal production of guava (<em>Psidium guajava</em>) requires flowering manipulation technique such strangulation in order to be available throughout the years. This study aimed to explain the relationship between strangulation time, the period of flowering and harvesting of guava cv 'Krystal'. The experiment was conducted from February to December 2017, in Cikabayan experimental garden of IPB University, Bogor, Indonesia. The experiment used a completely randomized design with single factor, i.e strangulation times that consisted of control (no strangulation), strangulation in March, in April and in May. The results showed that strangulation treatment was able to accelerate the emergence of flowers and increase the number of generative shoots, the number of flowers per tree and the number of fruits harvested. The increase of flowering response on strangulated trees was supported by a higher leaf C/N compared to control, which is related to the low leaf N content in strangulation treatments. The strangulation treatment could accelerate the time of flower emergence six days earlier than control.<em>  </em><strong><em></em></strong></p><p><strong>Key</strong><strong>word<em>s</em></strong>: <em>guava, </em><em>C/N, flowering induction, ringing, seasonal production</em><strong><em></em></strong></p><p align="center"><strong> </strong></p><p align="center"><strong>ABSTRAK</strong></p><p align="center"><strong> </strong></p><p>Produksi buah jambu biji (<em>Psidium guajava</em>) yang bersifat musiman memerlukan teknik pengaturan pembungaan agar dapat tersedia sepanjang tahun. Penelitian ini bertujuan untuk menjelaskan keterkaitan antara waktu strangulasi dengan pola pembungaan dan panen buah jambu biji ‘Kristal’. Percobaan dilaksanakan mulai Februari sampai Desember 2017, di Kebun Percobaan Cikabayan IPB Bogor. Rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan faktor tunggal yaitu waktu strangulasi yang terdiri dari 4 (empat) taraf, yakni tanpa strangulasi, strangulasi bulan Maret, strangulasi bulan April dan strangulasi bulan Mei. Hasil penelitian menunjukkan bahwa perlakuan strangulasi mampu mempercepat munculnya bunga dan meningkatkan jumlah tunas generatif, jumlah bunga per pohon, jumlah bakal buah per pohon dan jumlah buah yang dipanen. Peningkatan respon pembungaan akibat strangulasi didukung oleh C/N daun yang lebih tinggi dibandingkan tanpa stangulasi, yang berhubungan dengan rendahnya kandungan nitrogen daun pada perlakuan strangulasi. Perlakuan strangulasi mampu mempercepat waktu muncul bunga 6 hari lebih cepat dibandingkan tanpa strangulasi.</p><p><strong>Kata </strong><strong>k</strong><strong>unci: </strong>jambu biji, C/N, induksi pembungaan, pencekikan batang, produksi musiman</p>

scholarly journals EFIKASI EKSTRAK BIJI JARAK PAGAR MORTALITAS LARVA PENGGULUNG DAUN (Lamposema indicate) PADA TANAMAN KEDELAI (Glycine max)

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Chairudin Chairudin ◽  
Sumeinika Fitria Lizmah ◽  
Rol Mahdi
Keyword(s):  
Glycine Max ◽  
Seed Extract ◽  
High Concentration ◽  
Leaf Roller ◽  
Randomized Design ◽  
Soybean Leaf ◽  
Completely Randomized Design ◽  
Soybean Plants ◽  
Soybean Leaves ◽  
Experimental Garden

Soybean leaf roller known as Lamposema indicata. These insects attack the leaves of soybean plants by rolling up soybean leaves, that are launched 3-4 weeks after planting. The research aims to find out application of Jathropha curcas extract againts the mortality of soybean leaf roller pest (Lamposema indicata) and reduce damage to soybean plants. This research was conducted in the experimental garden, Faculty of Agriculture, Teuku Umar University in October to November 2019. The research was arranged in a non factorial Completely Randomized Design consisting of 4 levels with 5 replications. The factors experience is Jathropha curcas seed extract concentrate are E1 (control), E1 (20%, E2 (13.3% and E3 (10%). The results shows Lamprosema mortality shows the highest found in the E3 regulation, this is because in the E3 setting it has a high concentration so that the composition of the poisons contained is also high. Castor seed extract (Jatropha curcas) contains the composition of phorbol ester and cursin. Based on the observations displayed during the observation, namely changes in behavior, slowing movement of larvae, discoloration from clear green to pale yellow and compacting of the larva's body cavity.Keywords: Effectiveness of concentration, mortality, leafworm caterpillars

scholarly journals PEMBERIAN PUPUK KASCING DAN POC NASA PADA PERTUMBUHAN DAN PRODUKSI BAWANG MERAH (Allium ascalonicum L.)

2020 ◽  
Vol 34 (3) ◽  
pp. 255-264
Author(s):  
Eni Farida ◽  
Saripah Ulpah ◽  
T. Edy Sabli
Keyword(s):  
Weight Loss ◽  
Plant Height ◽  
Observation Data ◽  
Tuber Weight ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Tuber Weight Loss ◽  
Experimental Garden

ABSTRACT The purpose of this study was to determine the effect of applying vermicompost fertilizer and POC Nasa on the growth and production of shallots (Allium ascalonicum L.). This research has been carried out in the Experimental Garden of the Faculty of Agriculture, Riau Islamic University for 4 months, starting from July to October 2018. The design used in this study was a factorial Completely Randomized Design consisting of 2 factors. The first factor is vermicompost fertilizer (K) which consists of 4 levels namely 0, 200, 400, 600 g / plot and the second factor is POC Nasa (P) consisting of 4 levels namely 0, 2, 4, 6 cc / l water. The parameters observed in this study were plant height, harvest age, number of tubers per clump, wet tuber weight per sample, dry tuber weight per sample, tuber weight loss. The last observation data were statistically analyzed and continued with a BNJ follow-up test at the 5% level. The results showed that the application of vermicompost fertilizer and poc nasa interaction significantly affected the parameters of plant height, age of harvest, the number of tubers per clump, dry tuber weight per sample, shrinkage of tuber weight, and the application of vermicompost fertilizer and poc nasa interactively had no significant effect on wet tuber weight parameters per sample with the best treatment is a concentration of 600 g / plot (K3) and 6 cc / water (P3) is a dose of 44.80 grams/plot. Keywords: POC, Kascing, Shallot

scholarly journals PERTUMBUHAN SETEK KRISAN (Chrysanthemum sp.) PADA BERBAGAI KONSENTRASI HORMON IBA (Indole Butyric Acid) DI BANGKA DENGAN SISTEM EX-VITRO

2020 ◽  
Vol 3 (1) ◽  
pp. 589-602
Author(s):  
Anggri Restikadia ◽  
Keyword(s):  
Experimental Method ◽  
Butyric Acid ◽  
Research Method ◽  
Ex Vitro ◽  
Indole Butyric Acid ◽  
Randomized Design ◽  
Flower Plant ◽  
Minimum Potential ◽  
Completely Randomized Design ◽  
Experimental Garden

Chrysanthemum is an ornamental flower plant that has advantage because of various colors and has long vase time. The minimum potential for chrysanthemum development in Bangka is because of limited seed and the enviroment conditions in Bangka are less than optimal for chrysanthemum plants. The increasing chrysanthemum seedlings can be done vegetatively by addition of IBA hormone with an ex-vitro system. This study aims to determine the effect of IBA (Indole Butyric Acid) hormone on the growth of chrysanthemum cuttings in Bangka. This research was conducted from March to May 2020 at the Research and experimental Garden, Faculty of Agriculture, Fisheries and Biology, Universitas Bangka Belitung. The research method used an experimental method with a single completely randomized design (CRD) consisting of 6 treatments, namely (Control), IBA 50 ppm, IBA 100 ppm, IBA 150 ppm, IBA 200 ppm, IBA 250 ppm. The results showed that giving IBA had no significant effect on the growth of chrysanthemum cuttings in Bangka. Treatment (IBA 150 ppm) tends to be better for the growth of chrysanthemum cuttings in Bangka.

scholarly journals Effect of Vermicompost Application to Arabica Coffee Seedlings (Coffea arabica L.)

2020 ◽  
pp. 1-9
Author(s):  
Indra Dwipa ◽  
Merlyana Boangmanalu ◽  
Musliar Kasim ◽  
Dedi Azwardi
Keyword(s):  
Sea Level ◽  
Seedling Growth ◽  
Coffea Arabica ◽  
Experimental Unit ◽  
Arabica Coffee ◽  
Multiple Test ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Coffea Arabica L ◽  
Experimental Garden

Aims: The research aimed to study the effect of several dose of vermicompost to arabica coffee seedling growth. Study Design: Completely randomized design. Place and Duration of Study: The research was conducted in experimental garden of Faculty of Agriculture, Andalas University from September to December 2018. The altitude of research site was 385 meter above sea level (asl). Methodology: The research aimed to study the effect of several dose of vermicompost to arabica coffee seedling growth. Completely randomized design was used in the research that consisted of 5 treatments (No vermicompost, 5 ton/ha, 10 ton/ha, 15 ton/ha and 20 ton/ha) and replied 3 times. Each experimental unit consisted of 6 seedlings. The data was analyzed by Duncan’s New Multiple Test in 5%. Results: The result showed that 5 ton/ha of vermicompost dose has affected the growth component of arabica coffee seedling. Conclusion: The addition of vermicompost dose affected the arabica coffee seedlings growth.

scholarly journals Effect of Canola and Compound Fertilizer on Potato (Solanum Tuberosum L.) Bacterial Wilt Management

2021 ◽  
Vol 3 (1) ◽  
pp. 28-38
Author(s):  
Norbert Iraboneye ◽  
Miriam K. Charimbu ◽  
Nancy W. Mungai
Keyword(s):  
Population Density ◽  
Field Experiment ◽  
Bacterial Wilt ◽  
Green Manure ◽  
Bacterial Population ◽  
Positive Control ◽  
Compound Fertilizer ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Four Levels

Bacterial wilt is a problematic disease affecting potato production in Kenya and the available management methods are not efficient. Field, semi-field and laboratory experiments were conducted to evaluate the effect of canola green manure and compound fertilizer on bacterial wilt management. Laboratory experiment was conducted at Egerton university biological laboratory to evaluate the effect of canola extract on R. solanacearum population density in-vitro. Four levels of canola extract quantities were used; 0, 100, 200, 300microlitres, and enrich immunomodulator (Di-bromo Di-nitro propane 1-3-diol) (DDD) was used as a positive control. Inoculum was prepared from infested soil and Selective Medium South Africa (SMSA) (Casamino acids, Bacto-Peptone, Glycerol, and Bacto-Agar) was used as growth medium in a completely randomized design. Field experiment was carried out in two sites (Elburgon site is in Upper high land zone two (UH2) and Mau-Narok is in Upper high land zone one UH1). Two levels of canola green manure (with and without green manure application), four levels of fertilizer (NPK+Ca+Mg+ micronutrients) applied at 0(F1), 250(F2), 575(F3), 900 (F4) kg ha-1 and diammonium phosphate (DAP500 kg ha-1) +Calcium ammonium nitrate             (CAN300 kg ha-1) (F5) as a positive control. The experiment was carried out in randomized complete block design (RCBD) spilt plot replicated three times, canola green manure as main plot and fertilizer and varieties combination as sub plots. Semi-field experiment (in pots) was conducted at Egerton university farm, five levels of canola green manure (100, 75, 50 and 0 g kg-1 soil) and four levels of the compound fertilizer as used in the field experiment were used in a completely randomized design (CRD) with three replicates. The data shows that canola extract did not have a significant (Pr <0.05) effect on bacterial population density (CFU), where chemical treatment (DDD) restricted the growth of R. solanacearum under laboratory experiment. Under field and semi-filed experiments, canola green manure and fertilizer treatments had no significant (Pr <0.05) effect on bacterial population density in the soil nor bacterial wilt incidence. Kenya karibu variety it did not show any wilting symptoms of bacterial wilt across the sites and semi-field experiment. Canola did not suppress the growth of R. solanacearum; further investigation should be done on other brassica family plants.

scholarly journals Application of Riau local entomopathogen fungi Beauveria bassiana toward Spodoptera litura pest and plants growth red chili

2021 ◽  
Vol 3 (1) ◽  
pp. 130-135
Author(s):  
Hapsoh ◽  
Desita Salbiah ◽  
Isna Rahma Dini ◽  
Johanna Yosefin BR Tobing
Keyword(s):  
Plant Growth ◽  
Beauveria Bassiana ◽  
Entomopathogenic Fungi ◽  
Spodoptera Litura ◽  
Raw Material ◽  
Horticultural Crop ◽  
Randomized Design ◽  
Plant Pest ◽  
Completely Randomized Design ◽  
Experimental Garden

Red chili is a horticultural crop that is widely cultivated commercially. The need for red chili is increasing, in accordance with the increasing variety of types of food that use red chili as a raw material. Pest attacks on red chili plants are an obstacle in red chili cultivation. Spodoptera litura is a red chili pest that can cause yield reductions of up to 80%. Control using the Riau local entomopathogenic fungi Beauveria bassiana is an effort to control S. litura using environmentally friendly materials. This study aims to determine the effect of the application of the Riau local entomopathogenic fungi B. bassiana to contol S. litura pests and the growth of red chili plants. The research was carried out at the Plant Pest Laboratory and Experimental Garden, Faculty of Agriculture, Riau University from July to August 2020. This study was designed in a completely randomized design with five treatments, namely the concentration of Riau local Riau B. bassiana 20 gl-1 water, 25 gl-1 water, 30 gl-1 water, 35 gl-1 water and 40 gl-1 water and four replications to obtain 20 experimental units. The results showed that the concentration of Riau local B. bassiana 30 gl-1 of water containing a conidia density of 4.1 × 108 con.ml-1 was a concentration that affected S. litura pests and chili plant growth by causing the intensity of S. litura pests which could be categorized as lower at 4.15% and can cause a peak in larval death on the fourth day after application.

scholarly journals Respons Hasil Padi dan Hara Tanah Sawah terhadap Bakteri Pelarut Fosfat dan Pemfiksasi Nitrogen

2021 ◽  
Vol 5 (2) ◽  
pp. 29-34
Author(s):  
Muhimmatul Husna ◽  
Sugiyanta Sugiyanta ◽  
Etty Pratiwi
Keyword(s):  
Paddy Field ◽  
Soil Degradation ◽  
Fertilizer Application ◽  
Rice Grain ◽  
Nitrogen Fixer ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Phosphate Solubilizing ◽  
Paddy Cultivation ◽  
Experimental Garden

The condition of unfertile paddy field due to excessive inorganic fertilizer application causing soil degradation. Fertilizing techniques using phosphate solubilizing  and nitrogen fixer bacteria are breakthroughs that should be developed in paddy cultivation to increase fertility soil and harvest of rice. This research aims to study on phosphate solubilizing and nitrogen fixer bacteria ability to increase the harvest of rice by increasing chemical and biological fertility of soil. The research was conducted in the greenhouse of Sawah Baru experimental garden, IPB University. The design used was a completely randomized design with one factor that was dosage of inorganic fertilizers (NPK) with seven levels that were control, NPK 100%, NPK 0% + bacteria, NPK 25% + bacteria, NPK 50% + bacteria, NPK 75% + bacteria and NPK 100% + bacteria. Each stage was repeated four times, so there were 28 units. The results of  phosphate solubilizing and nitrogen fixer bacteria could produce more rice grain 0.32 ton.ha<sup>-1</sup> than NPK 100% (recommended dose). Biological soil fertility improved with the increased population of bacteria, but there was no improved soil chemical fertility of soil.

scholarly journals Korelasi Antara Konsentrasi Oksigen Terlarut Pada Kepadatan Yang Berbeda Dengan Skoring Warna Daphnia spp. [Correlation Between Dissolved Oxygen Concentration In Different Densities With Color Scoring Of Daphnia spp.]

2019 ◽  
Vol 2 (1) ◽  
pp. 45 ◽  
Author(s):  
A. Shofy Mubarak, Diah Ayu Satyari U, Rahayu Kusdarwati
Keyword(s):  
Water Quality ◽  
Population Density ◽  
Dissolved Oxygen ◽  
Oxygen Concentration ◽  
Slow Growth ◽  
Dissolved Oxygen Concentration ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
The Difference ◽  
Treatment Medium

Abstract Dissolved oxygen is the parameters key of water quality. Low level of dissolved oxygen can affect the function and slow growth, can even cause death to fish in hypoxia condition. The aims of this experiment were to determine the effect of population density of Daphnia spp. of dissolved oxygen concentration and the correlation between dissolved oxygen concentration with color scoring of Daphnia spp. This method was experimental with Completely Randomized Design as experiment design with 6 treatments and 4 replications. The treatment that was given were the differences of Daphnia spp. density that consisted of treatment A (50 individu/200 ml), treatment B (250 individu/200 ml), treatment C (450 individu/200 ml), treatment D (650 individu/200 ml), treatment E (850 individu/200 ml), and treatment F (1050 individu/200 ml). The results showed that the difference of Daphnia spp. density showed highly significant effect of dissolved oxygen concentration of treatment medium (p<0,01). In addition, this experiment also showed that the dissolved oxygen concentration in treatment medium showed negative correlation with color score of Daphnia spp.

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