scholarly journals PENGARUH BERBAGAI PUPUK KANDANG DAN JARAK TANAM TERHADAP KEANEKARAGAMAN, DOMINANSI DAN LAJU TUMBUH GULMA PADA TANAMAN BAWANG MERAH

Author(s):  
Anggi Septia Nugraha ◽  
Jenal Mutakin ◽  
Novriza Sativa

Penelitian ini bertujuan untuk mengetahui interaksi antara berbagai pupuk kandang dan jarak tanam terhadap keanekaragaman, domonansi, laju tumbuh gulma dan untuk mengetahui pupuk dan jarak tanam manakah yang terbaik pada penekanan laju tumbuh gulma pada bawang merah. Penelitian dilaksanakan di Kp. Margahayu, Desa Caringin, Kecamatan Caringin, Kabupaten Garut. Penelitian ini menggunakan metode Rancangan Acak Kelompok (RAK) pola faktorial dengan 3 kali ulangan. Faktor pertama adalah jenis pupuk organik yaitu : p0 (tanpa pupuk organik) = 0 ton/ha, p1 (pupuk kandang sapi) = 20 ton/ha, p2 (pupuk kandang ayam) = 20 ton/ha, dan p3 (pupuk kandang kambing) = 20 ton/ha. Faktor kedua adalah jarak tanam yaitu : j1= 15 cm x 15 cm, j2 = 15 cm x 20 cm, dan j3 = 20 cm x 20 cm. Hasil penelitian menunjukanterdapat keanekaraman gulma pada lahan pertanaman bawang merah, yaitu : Centella aciaticaL., Metha x piperita L., Mimosa indica, Meniathes trifolrata L., Cyperus rotundus L., Amaratus viridis L., dan Colocasia esculenta. Gulma yang mendominasi di lahan pertanaman bawang merah terdapat pada golongan gulma daun lebar, yaitu : Centella aciatica L., sebesar 19,9089%. Hasil analisis ragam menunjukan tidak terjadi interaksi antara pemberian berbagai pupuk kandang dan jarak tanam terhadap laju tumbuh gulma pada tanaman bawang merah. Secara mandiri penggunaan pupuk p2 (pupuk kandang ayam) = 20 ton/ha setara dengan 7,2 kg/plot memberikan pengaruh nyata terhadap bobot kering gulma dan laju pertumbuhan gulma.Kata kunci: bawang merah, gulma, jarak tanam, dan pupuk organik.

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Jyothi R ◽  
Srinivasa Murthy K M ◽  
Hossein . ◽  
Veena .

Colocasia esculenta is commonly known as Taro, it is referred to as cocoyam in Nigeria. They are cherished for their rich taste, nutritional and medicinal properties. Every 100 g of taro corms possess 112 Kcal, 26.46 g carbohydrate, 1.50 g protein, 0.20 g total fat and 4.1g fiber (USDA National Nutrient Data Base). Besides its nutritional value, taro is used as a medical plant and provides bioactive compounds used as an anti-cancer drugs. Traditionally, cocoyams are vegetative propagated from tuber fragments, a practice that encourages pathogen distribution. Colocasia esculenta is a widely distributed food crop in the humid tropics and subtropics. Despite of its wide distribution, Taro plants are commonly infected with DsMV and other pathogens. This virus induces conspicuous mosaic, malformation, dwarfing or feathering on leaves in taro. As the results of infection, it reduces the quality and yield of taro production greatly. This virus is thus considered as a major limiting factor in the production of taro. Here plays the importance of  tissue culture plays a major role in producing the disease resistant plants round the year with high quality. For rapid multiplication and production of quality planting materials, tissue culture technology offers promising alternative compared to the traditional production methods. KEYWORDS: Colocasia esculenta, Virus, Pathogens, Conventional propagation, Micropropagation, Yield, Rapid multiplication, Quality


2009 ◽  
Vol 4 (2) ◽  
pp. 72-77
Author(s):  
Kususiyah Kususiah ◽  
Urip Santoso ◽  
Rian Etrias
Keyword(s):  

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Wiwik Endah Rahayu ◽  
Atika Romalasari

Nut grass is Cyperaceae group and underestimated its existence. Nut grass has many benefits so  potential to be developed. This study aims to determine the effect of planting media and the addition of NPK fertilizer to the growth of the nut grass and find out the nutrient content of chips made from nut grass tuber. The design of this study was factorial complete randomized design (RAL) which consisted of two factors. First factor is Planting Media, consist of M1 = soil, M2 = Soil: Sand (2: 1), M3 = Soil: Compost Fertilizer (2: 1) and M4 = Soil: Cage Fertilizer (2: 1) and second factor is fertilizer dosage NPK 15: 15: 15 with the level P1 = Without NPK fertilizer, P2 = 5 g NPK fertilizer, P3 = 10 g NPK fertilizer. Research result showed that the media significantly affected the number of clumps, root weight, clump weight, overall weight and number of flowers but did not significantly affect the height, number of tubers and tuber weight. Fertilizer significantly affected the number of clumps, root weight, clump weight, overall weight, number of flowers, number of tubers and tuber weight but did not significantly affect the height at P≤0.05 level. Interaction between planting media and NPK fertilizer did not significantly affect all parameters. Keywords: Chips, NPK Fertilizer, Nut Grass, Planting Media


AGRICA ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 124-133
Author(s):  
I Ketut Arsa Wijaya

This study was conducted in Balai Benih Induk (BBI) Luwus, Baturiti District, Tabanan Regency, with the high of place 506m above sea level occurring in March to May 2014. This research used randomized block design arranged per factor, namely population of plants (P) including three steps: P1=80.000 plants per hectare, P2= 100.00 plants per hectare, P3= 120.000 per hectare; and mulch (M) that include: M0= without mulch and without cleaning, M1= without mulch with clean weeding, M2= rice plants straw mulch (5 ton per hectare) and M3= black silver plastic mulch. Eventually, there were 12 combination treatments, each of which was repeated 3 times to obtain 36 land slots. The research indicates that there was no real interaction between the treatment of plant population and mulch usage in all variables observed. The 100.000 plant population per hectare can produce the weight of dry and fresh oven corn kernel without highest cornhusk that was to say 4.79 tons and 0.53 tons or 11.66 % and 20.45% higher compared to 120.000 plant population per hectare. The use of black silver plastic and rice plants straw mulch can produce the weight of fresh and dry oven corn kernel without cornhusk per hectare each of which is 4.69 tons, 4.57 tons, and 0.54 tons, 0.47 tons or 26.76%, 38.46 %, and 23.51 %, 20.51 % higher than without mulch and without clean weeding. Clean weeding treatment can produce the weight of fresh and dry oven corn kernel without cornhusk per hectare with its weight of 4.63 tons and 0.51 tons or 25.35 % and 35.90 % higher than without mulch and cleaning. Clean weeding treatment was not obviously different from mulch treatment. The identification of weed types were 19 kinds of weeds and Cyperus rotundus L. Weeds. They have the highest density and each absolute frequent of 1249.333 stems m-2 and 1.00.


2018 ◽  
Vol 30 (1) ◽  
pp. 65-72
Author(s):  
Marcelo Krause ◽  
João Colombo ◽  
Letícia Altoé ◽  
Marcelino Ianke ◽  
Antonio Fernando Souza
Keyword(s):  

2021 ◽  
Vol 15 ◽  
pp. 117822342110349
Author(s):  
Namita Kundu ◽  
Xinrong Ma ◽  
Stephen Hoag ◽  
Fang Wang ◽  
Ahmed Ibrahim ◽  
...  

The taro plant, Colocasia esculenta, contains bioactive proteins with potential as cancer therapeutics. Several groups have reported anti-cancer activity in vitro and in vivo of taro-derived extracts (TEs). We reported that TE inhibits metastasis in a syngeneic murine model of Triple-Negative Breast Cancer (TNBC). Purpose: We sought to confirm our earlier studies in additional models and to identify novel mechanisms by which efficacy is achieved. Methods: We employed a panel of murine and human breast and ovarian cancer cell lines to determine the effect of TE on tumor cell viability, migration, and the ability to support cancer stem cells. Two syngeneic models of TNBC were employed to confirm our earlier report that TE potently inhibits metastasis. Cancer stem cell assays were employed to determine the ability of TE to inhibit tumorsphere-forming ability and to inhibit aldehyde dehydrogenase activity. To determine if host immunity contributes to the mechanism of metastasis inhibition, efficacy was assessed in immune-compromised mice. Results: We demonstrate that viability of some, but not all cell lines is inhibited by TE. Likewise, tumor cell migration is inhibited by TE. Using 2 immune competent, syngeneic models of TNBC, we confirm our earlier findings that tumor metastasis is potently inhibited by TE. We also demonstrate, for the first time, that TE directly inhibits breast cancer stem cells. Administration of TE to mice elicits expansion of several spleen cell populations but it was not known if host immune cells contribute to the mechanism by which TE inhibits tumor cell dissemination. In novel findings, we now show that the ability of TE to inhibit metastasis relies on immune T-cell-dependent, but not B cell or Natural Killer (NK)-cell-dependent mechanisms. Thus, both tumor cell-autonomous and host immune factors contribute to the mechanisms underlying TE efficacy. Our long-term goal is to evaluate TE efficacy in clinical trials. Most of our past studies as well as many of the results reported in this report were carried out using an isolation protocol described earlier (TE). In preparation for a near future clinical trial, we have now developed a strategy to isolate an enriched taro fraction, TE-method 2, (TE-M2) as well as a more purified subfraction (TE-M2F1) which can be scaled up under Good Manufacturing Practice (GMP) conditions for evaluation in human subjects. We demonstrate that TE-M2 and TE-M2F1 retain the anti-metastatic properties of TE. Conclusions: These studies provide further support for the continued examination of biologically active components of Colocasia esculenta as potential new therapeutic entities and identify a method to isolate sufficient quantities under GMP conditions to conduct early phase clinical studies.


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