LEACHING LEVEL OF N, P, K, AND SEVERAL TYPES OF FERTILIZER

2018 ◽  
Vol 26 (1) ◽  
pp. 37-47
Author(s):  
Suroso Rahutomo ◽  
Eko Noviandi Ginting

A study to compare amount of N, P, K, and Mg leached from fertilizers had been conducted. Leaching was measured using percolator tubes for six months. Subsoil of Inceptisol collected from an oil palm plantation in North Sumatra was used to fill the tube. Treatments were application of briquette compound fertilizer, granular compound fertilizer, and single fertilizer; all types of fertilizers contained equal amount of N, P, K, and Mg. The results showed that higher amount of leached N, P, and K were found under application of single fertilizers (urea, Triple Super Phosphate/TSP, and Muriate of Potash/MoP) than under briquette and granular compound fertilizer which had slow release characters. Furthermore, amount of leached P was much smaller than leached N, K, and Mg. Residual P from fertilizers after six months was about 99.9%. On the other hand, an intensive leaching of Mg occurred in this study so residual Mg in the end of study was only 25-35%. For N and K, the residual nutrients from fertilizers after six months were about 92-95%.

2013 ◽  
Vol 8 (2) ◽  
pp. 13
Author(s):  
Rahmat Purbo Nurcahyo ◽  
Mandala Manurung

<p align="center"><strong>ABSTRACT</strong></p><p><em>One of the rapidly-growing subsectors in the agriculture sector in Sumatra is plantation. Increase in output of this plantation subsector encourage expansion of large scale plantations. On the other hand, many of the plantations were abandoned. This study aimed to find the cause, progression and potential losses from abandoned land, using descriptive and quantitative methods. This study resulted that the increase in the plantation subsector output contribution, increase in plantation subsector productivity, encourage the expansion of plantations and increasing the area of abandoned land. Plantation land from forest areas and oil palm plantation land also showed a tendency to be abandoned.</em></p><p align="center"><em>ABSTRAK</em></p><p>Salah satu sub sektor yang tumbuh dengan cepat di sektor pertanian di Sumatera adalah perkebunan. Peningkatan output subsektor perkebunan ini mendorong ekspansi perkebunan skala besar. Di sisi lain, banyak perkebunan yang ditinggalkan. Penelitian ini bertujuan untuk menemukan penyebab, perkembangan dan potensi kerugian dari lahan terlantar, menggunakan metode deskriptif dan kuantitatif. Penelitian ini menghasilkan bahwa peningkatan kontribusi keluaran subsektor perkebunan, peningkatan produktivitas subsektor perkebunan, mendorong perluasan perkebunan dan meningkatkan luas lahan terlantar. Plantation tanah dari kawasan hutan dan lahan perkebunan kelapa sawit juga menunjukkan kecenderungan untuk ditinggalkan.</p>


2018 ◽  
Vol 12 (2) ◽  
pp. 281-296
Author(s):  
Alimuddin Alimuddin ◽  
Harjoni Desky

This study examines the reasons for Achehness Ulama of Dayah regarding plants and seeds that are subject to zakat. How the logic of thinking used by these ulama and their relationship with maqāṣid al-syarī‘ah (syariah legal purposes). This research focuses on the legal substance of zakat as intended by the Qur’an and Hadith, then it is analyzed from the side of maqāṣid al-syarī‘ah. The results of this study indicate that Acehnese Ulama argues that zakat of plants is only rice or a kind of staple food, on the grounds that it is a staple food of a country’s population, which has filling properties and can be stored and lasted. Other plants such as oil palm, cocoa, coffee, even though they are productive they are not zakatable wealth, because they do not meet these criteria. The legal reasoning of the Acehness Ulama uses the deductive method with the bayani (language) approach. On the other hand, the Acehness Ulama does not deny that the search for maqāṣid al-syarī‘ah can be done through in-depth study, but it is not yet certain that the obligations of zakat on productive plants can be formulated through this approach, so they reject it. According to them, the command of zakat can only be understood from the side of ta‘abbudī (worship approach), not through ta‘aqqulī (resourceful approach).


2020 ◽  
Vol 3 (2) ◽  
pp. 193
Author(s):  
Hamdani Arifulsyah Rangkuti ◽  
Fany Meilani ◽  
Suci Nurulita

The purpose of this study was to determine how the application of PSAK 16 on productive plants in CV. Budi Bakti Agro was founded in 2000, which is a company engaged in the oil palm plantation sector. CV Budi Bakti Agro has 3 locations of oil palm plantations, namely in Padang Mahondang Village, Sukaramai Village, Batu Anam Village in North Sumatra. CV Budi Bakti Agro in presenting the value of its oil palms in the statement of financial position is at the historucal price and not based on the fair value of the asset. The company presents the statement of financial position as plant fixed assets and there is no separation between mature and immature plantations. This causes the financial statements presented are not relevant in accordance with the qualitative characteristics of the financial statements. After adjusting to the application of PSAK 16, it was determined that the value of the plants produced was Rp. 679,201,740 whose value is the fair value as of December 31, 2016 and the immature plantations amounting to Rp.15,761,010,500 whose value is the fair value as of December 31, 2016.


2021 ◽  
Vol 903 (1) ◽  
pp. 012007
Author(s):  
R R Tobing ◽  
A K Sakti

Abstract Tourism has played a major role in boosting the economy of every country in the world. Nonetheless, the COVID-19 pandemic has obviously taken its toll since it hit Indonesia over a year ago. This condition has urged the Indonesian government to diligently make optimal changes, especially in improving regions that have been neglected this whole time, with the purpose of establishing a tourist destination that will prove interesting to tourists. Parahyangan Catholic University plays a role in providing information in the form of scientific studies regarding architecture of the traditional Batak Toba habitation in the Samosir regency of North Sumatera province. The Hutaraja village has been selected as the object of research with the foundation being the existence of ulos fabric artisan communities as an appealing feature. This ulos fabric plays an important role in the cultural lives of the Toba Bataknese, and may have potential in value and aesthetic uniqueness. The purpose of this study is to identify the relation between the architectural housing form and the existence of the ulos fabric artisan communities. The study has been conducted through a qualitative approach with exploratory and explanatory methods. Its findings show that the Hutaraja village’s housing form is strongly related to both cultural and environmental aspects. On the other hand, the existence of ulos fabric artisan communities has been discovered to change the attributes of interior and exterior housing forms.


2019 ◽  
Vol 7 (1) ◽  
pp. 19-25
Author(s):  
Widihastuty Widihastuty ◽  
Maryani C. Tobing ◽  
Marheni Marheni ◽  
Retna A. Kuswardani

Ants are social insects which widespread and play many important roles in an ecosystem. Myopopone castanea ants are a predator for the pre-adult stage of pest Oryctes rhinoceros which is one of the important pests in oil palm plantations. At the oil palm plantations, M. castanea and pre-mature stadia from pests O. rhinoceros live on decaying palm oil stems. This study aimed to explore the presence and the microhabitat characteristics of M. castanea ant in oil palm plantation so that mass rearing of M. castanea ants can be carried out in the laboratory to support the natural enemy augmentation program in biological control of O. rhinoceros pest. The exploration of ant nests was carried out in two plantation locations: smallholder oil palm plantations in Tanah Merah sub-district, Binjai Selatan Subdistrict, Binjai and PTPN 2 and PTPN 4 in Deli Serdang and Serdang Bedagai districts, North Sumatra Province. The results showed that the colonies of M. castanea in both of plantations vary greatly in the size of the number and stage of the ant development stage. Average of abiotic factors in the microhabitat of M. castanea ants in PTPN plantation (t = 29.7 0C, Rh = 70%, pH = 6.03 and C / N ratio = 66.18%), while for smallholder plantation (t = 29.1 0C, Rh = 70.9%, pH = 6.39 and C / N ratio = 69.01%). A suitable abiotic environment will support life and mass rearing of M. castanea ant colonies.


Agromet ◽  
2009 ◽  
Vol 23 (2) ◽  
pp. 112
Author(s):  
Nuzul Hijri Darlan ◽  
Hasril Hasan Siregar ◽  
Eka Listia ◽  
Edy Sigit Sutarta

Implication of climate change on oil palm plantation in Indonesia generally not much known, which could be a threat that needs attention, or maybe an opportunity. Climate change could cause the rainy season more wet and dry season drier. At other side, climate change also caused the temperature increased, which could make an extension of oil palm plantation in higher altitude become possible. Nowadays, total area of oil palm plantation in high altitude in north Sumatera was 4.725 hectares. This paper describes recent evaluation of climate change in North Sumatera province and its relation with oil palm extension and the response of oil palm productivity in higher altitude.


Author(s):  
Munawiroh Munawiroh

This paper draws on the results of research on the Role of Education in Religious Counseling in the Community, which describes how education plays its role in religious counseling activities. The study was conducted in seven provinces, i.e. East Java, West Java, Central Java, North Sumatra, Bali, Central Kalimantan and East Nusa Tenggara. The data were collected by using questionnaires. The fi ndings show that religious counselors understand about the education role they must play in their counseling programs. The activities categorized as the role of education in counseling include religious sermons, regular recitation, group discussion, and individual consultations. The materials provided may vary according to the needs of the community. On the other hand, the obstacles during the performance of their education role include, among others, considered low benefi ts, inadequate means of transportation, short availability of textbooks, and lack of public enthusiasm in participating in the counseling.


2020 ◽  
Vol 2 (3) ◽  
pp. 121-128
Author(s):  
Yogi Evand ◽  
Diana Chalil ◽  
Rahmanta Ginting

Palm oil is an important commodity for Indonesia. It is an export oriented commodity with the highest export income contribution. Initially, Indonesian palm oil plantations were developed by major companies and since 1986, smallholders have started to establish. In 2018, the share of smallholders has reached 42% of the total Indonesian oil palm plantation areas. However, unlike major companies, most smallholders’ lack capital. Unfortunately, oil palm smallholders are not in the priority list of subsidized fertilizer recipients. As a result, smallholders have an average productivity that is still lower than private and state company plantations, which are 585.3 ton/ha/year and 5828 ton/ha/year, respectively. This does not only influence smallholder income but also the Indonesian palm oil industry. Therefore, this study will analyze subsidized fertilizer distribution for oil palm smallholders in Air Batu Subdistrict, Asahan District, which are determined purposively as one of the oil palm smallholding centers in North Sumatera. Data were collected from 1 (one) staff of the Agriculture office in Asahan, 2 (two) extension agents, 4 (four) fertilizer shopkeepers, and 24 smallholders in Air Batu. The agriculture office staff and extension agents were selected by purposive sampling based on their knowledge and responsibility in the distribution of subsidized fertilizers while shopkeepers and smallholders were selected with snowball sampling technique. Aside from timeliness, the overall distribution of subsidized fertilizer in Air Batu, Asahan is relatively good. Internal factors are negative since weaknesses are more dominant than strengths, while external factors are positive, since opportunities are more dominant than threats. The Asahan Agriculture Staff have made some fundamental changes, namely improving the management system both internally and externally. Therefore, they can use their strengths to overcome their weaknesses and threats to utilize the available opportunities as well as possible.


2016 ◽  
Vol 15 (3) ◽  
pp. 114-121 ◽  
Author(s):  
Winarna . ◽  
Kukuh Murtilakso ◽  
Supiandi Sabiham ◽  
Atang Sutandi ◽  
Edy Sigit Sutarta

2021 ◽  
Vol 29 (3) ◽  
pp. 159-166
Author(s):  
Retno Diah Setiowati ◽  
Yurna Yenni ◽  
Frisda Rimbun Panjaitan ◽  
Sujadi Sujadi ◽  
Mahmud Irfan Lubis ◽  
...  

An oil palm variety with high vitamin E has an added value because of its benefit as pharmaceutical and nutraceutical source. The measurement of the vitamin E content in CPO from eight varieties of oil palm is an effort to obtain high vitamin E varieties with the optimum oil yield. The varieties used in this experiment were DxP PPKS 718, DxP PPKS 239, DxP PPKS 540, DxP Yangambi, DxP Lame, DxP Avros, DxP Simalungun, and DxP Langkat, which were planted in a demonstration block, located at Kebun Adolina PTPN IV. The result showed that the average of the vitamin E from 8 varieties ranged from 477.36 ppm up to 582.78 ppm. The DxP Yangambi has the potency to be improved as the candidate of DxP variety with high vitamin E added value due to its highest vitamin E content. On the other hand, the DxP PPKS 540 is appropriate as candidate of ortets for high vitamin E clones regarding the vitamin E content; which is the highest over the whole samples


Sign in / Sign up

Export Citation Format

Share Document