scholarly journals Menghitung Waktu Panen Tanaman Bawang Merah Berbasis Heat Unit pada Pemberian Pupuk Organik di Tanah Gambut

2016 ◽  
Vol 16 (1) ◽  
pp. 47-56
Author(s):  
Djoko Eko Hadi Susilo

Determining of the harvest of onion in the peat soil can be done by using physiological harvest criteria, but calculating the appropriate of harvest time can support the quality of harvesting of the onion plant. This study was conducted by using polybags in research and experiment gardens of the Faculty of Agriculture and Forestry of the University of Muhammadiyah Palangkaraya from April to June in 2016. The given fertilization was an organic fertilizer in peat soil by using stall fertilizer like chicken feces with dosages of 15-30 tons ha-1 (PK) and bokashi of stall fertilizer of chicken feces with a dosage of 2-5 tons ha-1 (BK). The observation was done to the calculation of daily temperature (�C), the average of daily temperature (�C), and the unit of heat (heat unit) (�C day) as long as the cultivation of onion plant. The results showed that the harvest time that appropriate to the harvest physiological criteria in the treatment of BK at the age of 57 days after planting is relatively accurate and appropriate because it has a heating unit for 947,17oC day, and the harvest time that appropriate to the harvest physiological criteria of PK treatment at the age of 59 days after planting is relatively late because it has a heating unit for 978,09oC day.

PEDIATRICS ◽  
1974 ◽  
Vol 53 (1) ◽  
pp. 127-129

ALLIED HEALTH PROFESSIONS MEETINGS: The International Association of Enterostomal Therapists and the Southern California Para-urology Society will meet February 1-2, 1974, at the Sheraton Inn in Los Angeles. For information write Evonne Fowler, R.N., Department of Surgery, Harbor General Hospital, 1000 West Carson Street, Torrance, California 90509. NEWBORN RADIOLOGY SEMINAR: The University of Colorado School of Medicine will sponsor the second annual Newborn Radiology seminar, February 11-15, 1974, at the Given Institute of Pathobiology in Aspen.


Psihologija ◽  
2017 ◽  
Vol 50 (1) ◽  
pp. 51-66 ◽  
Author(s):  
Ana Genc

In most modern societies, nearly every realm of life involves some form of evaluation of our knowledge, abilities and skills. Given the potentially significant consequences of exams, it is not surprising that they are often very stressful. This study aimed to determine the existence and nature of the relationships between level of test anxiety, coping strategies, and achieved success on a mid-term test. As well as examining the direct relations between the given variables, our primary interest was to investigate the potential mediating role of coping mechanisms between the input and output variables of the examined stressful transaction. The study was conducted on a sample of 263 students from the Psychology and German Studies Departments of the Faculty of Philosophy at the University of Novi Sad. According to our results, only emotion-focused coping mechanisms were statistically significant mediators in the relationship between level of test anxiety and mid-term test achievement. The results indicate that students with high test anxiety who employ predominantly emotion-focused coping strategies score lower on a pre-exam knowledge test.


2019 ◽  
Vol 3 (2) ◽  
pp. 320-327
Author(s):  
Naswir Naswir ◽  
Elvin Hasman ◽  
A Irwan

this research is aim to provide design and prototype of rotary electrical controled drumdrier machine for drying organic fertilizer to increased production capacity and quality by using a source of heat energy from electricity. This machine consists of five main components i.e. drying cylinder, heating unit, support frame, engine and transmission system. Engine specifications are high 130 cm, 720 cm long, and 120 cm wide, cylinder diameter 60 cm, power engine 14 hp, and heating temperature 142 oC. engine performance test are: capasity 805,03 kg/hours, drying rate 27,40 %/hours, noise level 81,54 db. cost analysis result are operational cost 155,06 Rp/kg and Break Event Point 159.219,73 kg/years


2016 ◽  
Vol 9 (1) ◽  
pp. 72 ◽  
Author(s):  
Lenín Ramírez ◽  
Alfredo Durán ◽  
Dennis Mora

The effect of several strategies - alone and integrated - on the control of the Phytophthora sp. fungae, which causes radical rotting of papaya fruits, was evaluated under nursery conditions. The experiment took place between August 1994 and March 1995 at the University of Costa Rica's Estación Experimental Fabio Baudrit, located in Alajuela, Costa Rica. The treatments applied were: sun heat for 30 days; organic fertilizer made from hen droppings; etridiazole fungicide; and the following combinations: sun heat + etridiazole + organic fertilizer; etridiazole + organic fertilizer; sun heat + etridiazole; sun heat + etridiazole + organic fertilizer, and finally, an inoculated control treatment. Soil rows were made, and then they were innoculated with the pathogenic agent, and finally the aforementioned treatments were applied. The treated soils were bagged separately. The Solo Sunrise Hawaiian variety was planted in bags. The percentage of gerrnination, stem diameter at soillevel, plant height, radical system fresh weight, and severity of radical rotting were evaluated three months later. In addition, the effect of the treatments on beneficent soil microorganism populations (actinomyces, protozoa, bacteria, and fungi) was evaluated, as well as those of pathogenic populations. Organic fertilizer increased plant strength. All treatments affected germination; the innoculated control had the greatest germination percentage. Treatments containing organic fertilizer affected germination most.


HortScience ◽  
2018 ◽  
Vol 53 (4) ◽  
pp. 451-458
Author(s):  
Juan Carlos Díaz-Pérez ◽  
Jesús Bautista ◽  
Gunawati Gunawan ◽  
Anthony Bateman ◽  
Cliff Martin Riner

Vidalia onions (Allium cepa L.) are sweet, short-day, low pungency, yellow Granex-type bulbs that are popular in the United States because of their mild flavor. There are limited studies on sweet onion plant growth in response to organic fertilization rate. The objective of this report was to evaluate the effects of organic fertilizer rates on sweet onion plant growth, and leaf and bulb mineral nutrients. Experiments were carried out at the Horticulture Farm, Tifton Campus, University of Georgia, in the Winters of 2012–13 and 2013–14. There were five treatments [organic fertilizer 3–2–3 equivalent to 0, 60, 120, 180, and 240 kg·ha−1 nitrogen (N)]. During the season and at the mature plant stage, root, stem, and bulb biomass increased whereas the root-to-shoot ratio decreased with increasing fertilization rate up to 120 kg·ha−1 N. Foliar concentrations of N and Ca decreased whereas Cu concentration increased with increasing organic fertilization rate. Bulb Mg and Mn increased whereas P and Cu decreased with increasing organic fertilization rate. The accumulation of mineral nutrients by onion whole plants increased quadratically (N, P, K, and S) or linearly (Ca and Mg) with increasing fertilization rate. The N use efficiency decreased with increasing organic fertilization rate; the agronomic efficiency of N (AEN) decreased quadratically and the marginal yield decreased linearly with increasing fertilization rate. Chlorophyll indices (CI) were highest with 240 kg·ha−1 N and lowest with 0 kg·ha−1 N. In conclusion, onion plant growth increased with increasing organic fertilizer rate probably because of augmented soil N levels. Observation of nutrient deficiencies late in the season, even at high organic fertilization rates, indicates that preplant application of organic fertilizer was sufficient to cover plant nutritional needs only partially and that applications of N fertilizer later in the season may be necessary. High application rates of organic fertilizer (above those required by the crop) may have resulted in significant N leaching because it is unlikely that the crop used most of the N that was mineralized. Bulb concentrations of P, K, Ca, Mg, S, B, Fe, Cu, and Mn were higher compared with values reported in the literature for onions produced with inorganic fertilizers.


Author(s):  
Mohan Rathakrishnan ◽  
Arumugam Raman

Trello online discussion has become one of the important strategies for the University Utara Malaysia Management Foundation Programme student to teach other students to think critically in conveying their ideas and become more proactive and creative in critical thinking subject. In a heutagogical approach, learners become highly autonomous and self-determined while learning online. They use Trello online discussion tool as self-determination learning. Trello enable the learners to use their capacity and capability with the goal of producing learners. Trello online learning was conducted to examine its effectiveness in enhancing macro critical thinking among active-reflective learning style. The students discuss and write their ideas in Trello. Ideas that are posted in Trello will be displayed in front of the class so that the entire learners in the class could see the given ideas. Paul's model was used to analyze learners' critical thinking in Trello online discussion.


In the year 1786 Erland Samuel Bring, Professor at the University of Lund in Sweden, showed how by an extension of the method of Tschirnhausen it was possible to deprive the general algebraical equation of the 5th degree of three of its terms without solving an equation higher than the 3rd degree. By a well-understood, however singular, academical fiction, this discovery was ascribed by him to one of his own pupils, a certain Sven Gustaf Sommelius, and embodied in a thesis humbly submitted to himself for approval by that pupil, as a preliminary to his obtaining his degree of Doctor of Philosophy in the University. The process for effecting this reduction seems to have been overlooked or forgotten, and was subsequently re-discovered many years later by Mr. Jerrard. In a report contained in the ‘Proceedings of the British Association’ for 1836, Sir William Hamilton showed that Mr. Jerrard was mistaken in supposing that the method was adequate to taking away more than three terms of the equation of the 5th degree, but supplemented this somewhat unnecessary refutation of a result, known à priori to be impossible, by an extremely valuable discussion of a question raised by Mr. Jerrard as to the number of variables required in order that any system of equations of given degrees in those variables shall admit of being satisfied without solving any equation of a degree higher than the highest of the given degrees. In the year 1886 the senior author of this memoir showed in a paper in Kronecker'e (better known as Crelle’s ) ‘Journal that the trinomial equation of the 5th degree, upon which by Bring’s method the general equation of that degree can be made to depend, has necessarily imagmaiy coefficients except in the case where four of the roots of the original equation are imaginary, and also pointed out method of obtaining the absolute minimum degree M of an equation from which an given number of specified terms can be taken away subject to the condition of no having to solve any equation of a degree higher than M. The numbers furnished be Hamilton’s method, it is to be observed, are not minima unless a more stringer condition than this is substituted, viz., that the system of equations which have to be resolved in order to take away the proposed terms shall be the simplest possible i. e ., of the lowest possible weight and not merely of the lowest order; in the memo: in ‘Crelle,’ above referred to, he has explained in what sense the words weight an order are here employed. He has given the name of Hamilton’s Numbers to these relative minima (minima, i. e ., in regard to weight) for the case where the terms to be taken away from the equation occupy consecutive places in it, beginning with the second.


Agriculture ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 121
Author(s):  
Angela Koort ◽  
Marge Starast ◽  
Priit Põldma ◽  
Ulvi Moor ◽  
Leila Mainla ◽  
...  

Revegetating abandoned peatlands plays an important role in reducing the CO2 footprint. One possibility for carbon reduction is cultivating blueberries as calcifuge plants in acidic peat soil. The aim of the experiment was to find out the effect of different fertilizers on half-highbush blueberry cultivar ‘Northblue’ growth and biochemical parameters in peatland conditions. The experiment was carried out in 2011–2015 with four organic and one mineral fertilizer, where three were composted chicken manure- and one maltose-based organic fertilizer. The soil of the experimental area belongs to the soil subgroup Fibri–Dystric Histosol with the peat layer 1.0–1.5 m deep. Organic fertilizer 4–1–2, which contained seaweed but had low phosphorus and potassium content, resulted in high yields in 2011 and 2013, with similar vegetative growth and comparable biochemical parameters as mineral fertilizer 6–14–23. The principal component analysis showed that the experimental year was more important in determining fruit parameters than the fertilizer type. However, our results indicated that the organic fertilizers are alternatives to mineral fertilizer for organic production.


1955 ◽  
Vol 1955 ◽  
pp. 3-12 ◽  
Author(s):  
J. Mackay Doney

For any programme of livestock improvement to be successful it is necessary to investigate the mode of inheritance of the various economic characters and their relative importance in the given set of circumstances. Many practical attempts at agricultural improvements have failed to give satisfactory results because the objective has not been well co-ordinated with the overall economic, environmental and even social conditions.In this paper the possibilities of genetic improvement of a flock of Welsh Mountain sheep will be reviewed in the light of the results of investigations carried on at the College Farm of the University College of North Wales, Bangor, from 1949 to 1955. The investigations were made to determine the relative values and mode of inheritance of several basic measurable characters in the flock of 600 breeding ewes managed under typical hill conditions.


2013 ◽  
Vol 41 (2/3) ◽  
pp. 187-199
Author(s):  
Михаил [Mihhail] Лотман [Lotman]
Keyword(s):  

Metrical montage: On the theory of polymetrical compositions.The theory of polymetrical compositions was founded as late as in the 1970s by Pyotr Rudnev, a scholar of the University of Tartu. While Rudnev approached the problem from the paradigmatic aspect, in the present paper the priority of syntagmatics over paradigmatics is emphasized: the effect of polymetricity is based on the contrast of segments, which is, in its own way, a montage with means of verse technique. Just like in the case of video montage, here as well we can distinguish between straight cut (closed polymetrics in Rudnev’s terms) and dissolve (open polymetrics in Rudnev’s terms). The given types of montage use different semiotic mechanisms and have different semantic effects. The theoretical standpoints are illustrated with examples from Alexander Pushkin’s poetry.


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