scholarly journals Kemampuan berakar setek pucuk dari beberapa tanaman induk Pinus merkusii kandidat bocor getah

1996 ◽  
Vol 13 (2) ◽  
pp. 71-83
Author(s):  
Gunawan Nugrahanto ◽  
◽  
Mohammad Na'iem ◽  
Sapto Indrioko ◽  
Eny Faridah ◽  
...  

This study aims to examine the rooting ability of 24 clones of Pinus merkusii with high resin yield. The explants were propagated by shoot cutting that produced callus. The variables of root cuttings ability were root percentage, cutting height growth, number and length of primary roots, number and length of secondary roots, root volume, root biomass, and shoot-root ratio. The study was carried out in a Completely Randomized Design with treatments of 14 clones from hedge orchard (called as pkp clone hereafter) and 10 clones from a progeny trial (called as ppt clone hereafter) with 4 treeplots and 4 replications. The results showed that clones' origin had caused differences in root percentage, length of primary roots, number and length of secondary roots, and shoot-root ratio (P value <0.05). Clones originated from hedge orchard were always significantly better. Almost all clones from hedge orchard have a good rooted ability (>70%). Meanwhile, the clones from the progeny trial showed better height growth.

1996 ◽  
Vol 13 (2) ◽  
pp. 71-83
Author(s):  
Gunawan Nugrahanto ◽  
◽  
Mohammad Na'iem ◽  
Sapto Indrioko ◽  
Eny Faridah ◽  
...  

This study aims to examine the rooting ability of 24 clones of Pinus merkusii with high resin yield. The explants were propagated by shoot cutting that produced callus. The variables of root cuttings ability were root percentage, cutting height growth, number and length of primary roots, number and length of secondary roots, root volume, root biomass, and shoot-root ratio. The study was carried out in a Completely Randomized Design with treatments of 14 clones from hedge orchard (called as pkp clone hereafter) and 10 clones from a progeny trial (called as ppt clone hereafter) with 4 treeplots and 4 replications. The results showed that clones' origin had caused differences in root percentage, length of primary roots, number and length of secondary roots, and shoot-root ratio (P value <0.05). Clones originated from hedge orchard were always significantly better. Almost all clones from hedge orchard have a good rooted ability (>70%). Meanwhile, the clones from the progeny trial showed better height growth.


2017 ◽  
Vol 18 (02) ◽  
pp. 62-68
Author(s):  
Retno Prihatini

The research has been conducted to find out the best concentration of coconut water in the induction of roots of cuttings axillary buds Andrographis paniculata Nees. This research was conducted in Plant Physilogy of Division,   Department of Biology, Faculty of Math and Natural Science, AndalasUniversity, for 12 weeks.  The research used Completely Randomized Design. The material used was axillary buds  A.  paniculata  with nodal number 3. treated for 30 minutes in coconut water 10, 15 and 20% and aquadest as a controle each with 6 replications. Observations were done on live percentage, root length, root  numerous and  cuttings  height  after 12 weeks planting. The results showed that the  concentration 10 to 15% of coconut water was able with significant  to induce the  root growth of cutting axillary buds A. Paniculat.  The concentration 15% of coconut water was the best in inducing  cutting height growth, each with an average root length is 8.2 cm and the average number of roots that formed is 16, 0 and the average cutting height is  22.7 cm. There was an increase of average of  cuttings height growth by 86% which was supported by the average increase of root length and root number of 105.0% and 280.9% on the occasion of cuttings of axillary buds in coconut water concentration 15%.


2021 ◽  
Vol 16 (2) ◽  
pp. 193-207
Author(s):  
Suryanaji ◽  
Purwanto Purwanto ◽  
Arga Pramudita

Pinus merkusii is a main species for produce pine resin in Indonesia. Clone of Pinus merkusii on progeny trial establishing by Perhutani has identified can produce high yielderresin up to 100 gr/tree/3 days. Clonal forestry needs applied propagation method that easy dan economically on operational level. One of propagation method selected was by air layering. This research work were to obtained genetic materials and to get information number of live percent of seedling from air layering from high yielder resin Pinus merkusii subline when the mother trees reach 12 years old. The research was conducted in Perum Perhutani KPH Banyumas Barat, RPH Samudra on year 2020 with Completely Randomized Design (CRD). The result of this research showed that rooting ability on  Pinus merkusii 12 years old mother trees have signifiant differences between subline. Rooting ability of seedling generated by air layering method were 29% (subline SG2), 24% (subline JB2), 18% (subline SL2) and 11% (subline SM2) with an average of 18% and heritability of rooting ability by air layering was 0,44.  


2021 ◽  
Vol 2 (2) ◽  
pp. 185
Author(s):  
Eva Fitriyaningsih

Background: Using young breadfruit to increase the breadfruit usability and economic value, one of the efforts is through the enrichment of the type of processed breadfruit products, breadfruit provides nutritional value that is beneficial to health, one of the help of breadfruit is increasing breadfruit for shredded products.Objectives: This study aims to find out how to improve young breadfruit 20%, 30%, 40% of the chemical properties (carbohydrate, protein, and fiber) of shredded tuna.Methods: This study used an experimental design with a non-factorial Completely Randomized Design (CRD) with three preparations and three repetitions. Then the chemical tests (carbohydrate, protein, and fiber) at the Laboratory of Animal Nutrition and Feed Technology of the Faculty of Agriculture, Syiah Kuala University, Banda Aceh.Results: The study results showed actual participation in young breadfruit 20%, 30%, and 40% of the chemical properties (carbohydrate, protein, and fiber) in shredded tuna with a p-value < 0.05.Conclusion: Agreeing that 20%, 30%, and 40% of young breadfruit were approved for shredded tuna's chemical properties (carbohydrate, protein, and fiber).


2019 ◽  
Vol 7 (2) ◽  
pp. 97-102
Author(s):  
Eka Astari Hakim ◽  
Mars Khendra Kusfriyadi ◽  
Agnescia Clarissa Sera

Backgroung : Pindang eggs are traditional egg-processed products using tanneries that will denaturing the egg proteins. Guava leaves, tea pulps, shallot skin and onion skin are comionly used for making pindang eggs as they contain tannin.Objective : This study aimed to analyze the effect of tannin sources on protein content and shelf life of pindang eggs.Method : This study used an experimental method with a Completely Randomized Design (CRD) design to examine the difference between tannin using guava leaves, shallot skin, tea pulp, bombay onion skin with 6 times of repetition. Protein content on pindang eggs processed with onion, guava leaves, tea pulp, and onion skins were 13,0%, 12,95%, 12,90%, and 12,80% respectively.Result : There was a significant effect of the addition of tannin sources on the levels of pindang egg protein (p = 0.000, α = 5%). Pindang  eggs have an average shelf life of 20 days. On the 30th day, almost all of pindang eggs with 4 types of tanneries has deteriorated  while the microbiological tests of  all pindang eggs on the 20th day of bacteria have exceeded SNI requirements. There is a real effect of the decay of each tannin source on the storage time of pindang eggs (p = 0.000, α = 5%). There is an influence from the tannin sources from guava leaver, tea pulp, shallot skin, onion skin on egg protein content. The best treatment was found in shallots with a percentage of protein content reached 13.00%.Conclusion : There is an influence from the source of tannin, guava leaves, tea pulp, shallot skin, onion skin to the durability of pindang eggs. The best treatment for 30 days is found in tea grounds and onion skin while in microbial studies all pindang eggs have exceeded SNI requirements


2013 ◽  
Vol 67 (8) ◽  
pp. 1728-1733 ◽  
Author(s):  
P. Y. Mensah ◽  
R. A. Kuffour ◽  
P. K. Baidoo ◽  
E. Awuah

The use of raw sludge spread on land as conditioner and fertilizer has been practised over the years in urban agriculture. However, this raw sludge (biosolids) is associated with a potential health risk as a result of the pathogenic microorganisms it contains. The study considered the dewatering of faecal sludge (FS) mixed with sawdust to produce biosolids that can be applied as manure for agricultural use. It assessed the bacterial and helminth egg qualities of the biosolids produced from FS–sawdust mixture. Bench-scale unplanted filter beds were used for dewatering of FS mixed with different percentages of sawdust. The sludge consisted of public toilet sludge and septage in the ratio of 1:3. An analysis of variance of the completely randomized design was undertaken and a P-value below 0.05 was considered statistically significant. The sawdust–FS mixture analysed after complete dewatering showed significant reduction in microbial (bacteria) content (P &lt; 0.05) and helminth eggs, making the biosolids produced safe for farmers and the environment. The bulking agent improved the quality of the biosolids, with greatest pathogen removal observed in the 150% sawdust, whilst the least reduction was recorded in the 0% sawdust (control).


PERENNIAL ◽  
2008 ◽  
Vol 4 (1) ◽  
pp. 1 ◽  
Author(s):  
Yusuf Andi Senjaya ◽  
Wahyu Surakusumah

The allelopathic substances are organic agents which are produced and released by a plant that cause alteration on the neighboring plants. The characteristics of allelochemicals usually inhibit germination of other species and sometime will reduce growth of the other species which associate with the producer of allelochemicals. The mechanism of allelochemicals can be used to suppress a germination of Echinochloa colonum L. and Amaranthus viridis L. These plants are weeds species of rice. The aims of this research were to study the allelochemicals effect from the leaf of pines (Pinus merkusii Jungh. et de Vriese) on germination of Echinochloa colonum L. and Amaranthus viridis L.. The experimental design used Completely Randomized Design with five replicates for each concentration (0, 250, 500, 750, 1000 ppm). The result which was analyzed with One-Way Analyze of Varians (ANOVA) indicated that giving a pine leaf extracts had an inhibitor effect on germination of E. colonum L. and A. viridis L. Keywords: Pinus merkusii Jungh. et de Vriese, allelopathy, weeds, Echinochloa colonum L., Amaranthus viridis L. References


Jurnal Wasian ◽  
2017 ◽  
Vol 4 (1) ◽  
pp. 47
Author(s):  
Ady Suryawan

BPDAS Tondano has plan to rehabilitation of coastal area reached 10,000 hectares, thus requiring the seeds very much. Nyamplung has potential as a rehabilitation plant in coastal  and can support national needs in meeting the needs of biofuel. Nurseries nyamplung in North Sulawesi needs information how to handle the weaning of plant. Research using a completely randomized design with three treatment factors, namely 1). Cutting the leaves consist of two levels ie D1 (dauan left pair) and D2 (leaf still intact); 2) Cutting seeds that stick consists of two levels ie B1 (seeds removed) and B2 (seeds still attached ); and 3) Cutting the length roots consist of three levels ie A1 (5 cm), A2 (10 cm) and A3 (15 cm). 180 seedling were taken from germination using cocopeat media. Results of variance analysis showed that the treatment applied only affect the heigth growth. The survivak rate is not affected by the treatment applied because survival rate reached 100%. The treatment leaves and seeds have a real effect, whereas the root treatment had no significant effect. The result of the highest growth is D2B2C3 ie : 5,8 cm and the lowest growth derived from D1B1C2 is only 1.43 cm.


Jurnal Agro ◽  
10.15575/162 ◽  
2015 ◽  
Vol 2 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Abdul Karim Kilkoda

 Penelitian ini bertujuan untuk menguji pengaruh eksudat akar gulma Ageratum conyzoides dan Borerriaalatayang didalamnya terkandung alelopati tanin dan fenol terhadap pertumbuhan dan hasil tiga varietas kedelai berdasarkan ukuran benih kedelai. Percobaan dilaksanakan di Rumah kaca Fakultas Pertanian Universitas Padjadjaran, JatinangorKabupaten Sumedang, Jawa Baratpada bulan September 2014.  Penelitian disusun dalam Rancangan Acak Lengkap factorial. Faktor pertama adalah ekstrak kasar gulma, yaitu; EG0 = ekstrak gulma 0 g/100 ml(kontrol), EG1 = ekstrak gulma (Ageratum + Borreria)100 (g/v), EG2 = ekstrakgulma (Ageratum + Borreria)200 (g/v), EG3 = ekstrak gulma (Ageratum + Borreria) 300 (g/v), faktor kedua yaitu ukuran bobot dan jenis kedelai; K1 = varietas Gepak Kuning  (bobot 100 biji : 6,82 gram) ukuran bobot kecil, K2 = varietas Gema(bobot 100 biji : 12 gram) ukuran bobot sedang, K3 = varietas Grobogan  (bobot 100 biji : 17,8 gram) ukuran bobot besar. Tidak terdapat interaksi antara ekstrak kasar gulma dengan ukuran bobot dan jenis kedelai terhadap seluruh parameter pertumbuhan dan hasil yang diamati. Terdapat pengaruh mandiri antar sesama varietas kedelai hampir pada semua parameter pertumbuhan dan hasil tanaman kedelai, kecuali parameter luas daun, dengan nilai tertinggi dihasilkan oleh varietas Groboganyang memiliki ukuran biji besar. Terdapat pengaruh mandiri dari ekstrak kasar gulma Ageratum conyzoides dan Borerriaalata pada semua parameter pertumbuhan dan hasil tanaman kedelai.This study aimed to examine the effect of root exudates of weeds Ageratum conyzoides and Borerria alata therein containing tannins and phenols as allelopathy on growth and yield of three soybean varieties with concern to size of the seed. The experiment was conducted in greenhouse of Faculty of Agriculture, Universitas Padjadjaran, Jatinangor Sumedang, West Java in September 2014. The study was set in completely randomized design factorial. First factor was the weed crude extract, namely; EG0 = weed extract 0 g / 100 ml (control), EG1 = weed extract (A. conyzoides  + B. alata) 100 (g / v), EG2 = weed extract (A. conyzoides  + B. alata) 200 (g / v), EG3 = weed extract (A. conyzoides  + B. alata) 300 (g / v). Second factor was and type of soybean; K1 = variety Gepak Kuning (weight of 100 seeds: 6.82 gram) weight size small, K2 = variety Gema (weight of 100 seeds: 12 gram) weight size medium, K3 = variety Grobogan (weight of 100 seeds: 17.8 gram) weight size big. There was no interaction between weed crude extract and soybean type. Meanwhile, there was independent effect among varieties tested for almost all parameters observed, except for leaf width. There was also independent effect from crude extract of Ageratum conyzoides and Borerria alata on all growth and yield parameters of soybean.RESPON ALLELOPATI GULMA Ageratum conyzoides DAN Borreria alata TERHADAPPERTUMBUHAN DAN HASIL TIGA VARIETAS KEDELAI (Glycine max)<w:LsdException Locked="false" Priority="70" SemiHidden="false" UnhideWhenUsed="false" Name="Dark List


2021 ◽  
Vol 8 (1) ◽  
pp. e5226
Author(s):  
Dhiego César Oliveira Riva Neto ◽  
Leonardo Rodrigues Barros ◽  
Vinicius Silva Sousa ◽  
Eliana Paula Fernandes Brasil ◽  
Adriana Aparecida Ribon ◽  
...  

Corn (Zea mays L.) is one of the most important cereals grown and consumed in the world not only for its economic value but also due to its importance in human and animal nutrition. This study aimed to assess the initial development of corn as a function of increasing nitrogen doses. The study was carried out in a greenhouse on the Sipal Farm, Confresa, MT, Brazil. The experiment was set up in a completely randomized design, consisting of five treatments (0, 100, 200, 300, and 400 mg N dm−3 soil), with four replications, conducted from April to June 2020. Four seeds of the hybrid K 9606 VIP 3 were sown per 8-L polyethylene pot. The plants were thinned at 7 days after emergence (DAE), leaving only one plant per pot. Morphological components were assessed. A significant effect was found for almost all the analyzed parameters, except for stem diameter and root dry matter. The maximum plant height, shoot fresh matter, leaf area index, shoot dry matter, root fresh matter, and root volume was obtained by applying the maximum agronomic efficiency doses of 248.83, 271.90, 336.91, 279.66, 403.92, and 272.90 mg N dm−3 soil, respectively. Nitrogen doses influenced the initial development of the corn crop.


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