UPAYA PENINGKATAN PRODUKSI KACANG TANAH (Arachis hypogaea L.) DENGAN APLIKASI MACAM DOSIS MIKORIZA DAN PHONSKA

Di Indonesia, Kacang Tanah (Arachis hypogaea L) menjadi komoditas penting dan strategis. Menurunnya kesuburan tanah merupakan satu penyebab rendahnya produktivitas kacang tanah. Untuk mengatasi masalah kesenjangan antara produksi dan konsumsi dapat dilakukan dengan menggunakan pupuk hayati mikoriza dan pupuk phonska karena pupuk ini yang tepat diterapkan untuk mendukung pertumbuhan tanaman kacang tanah tersebut. Upaya meningkatan produksi kacang tanah dengan memanfaatkan cendawan mikoriza secara umum memberikan manfaat yang besar oleh kesuburan tanah dalam jangka waktu yang panjang. Penelitian ini dilaksanakan di Desa Sukodadi, Kecamatan Sukodadi, Kabupaten Lamongan. Ketinggian tempat ± 6 meter di atas permukaan laut. Waktu penelitian ini dilaksanakan pada bulan Februari-April 2020.  Penelitian ini menggunakan metode rancangan acak kelompok RAK yang disusun secara faktorial dengan dua faktor perlakuan yaitu Pupuk Mikoriza dan Pupuk Phonska. Faktor Pupuk Mikoriza terdiri dari 3 level yaitu: 100 kg/ha, 200 kg/ha, dan 300 kg/ha. Faktor Pupuk Phonska terdiri dari 3 level yaitu: Tanpa pemberian phonska, 50kg/ha, dan 100 kg/ha. Pengamatan parameter pertumbuhan dan produksi yang diamati meliputi Tinggi tanaman, Jumlah Daun, Berat Brangkasan Basah, Berat Brangkasan Kering, dan Berat Biji PerPetak. Pengamatan dilaksanakan mulai umur 14 hari setelah tanam lalu dilanjut 14 hari sekali. Data hasil dari penelitian sejak tanaman berumur 14 hari setelah tanam hingga akhir pengamatan, dianalisa dengan analisa sidik ragam dan dilanjutkan dengan Uji BNT 5%. Hasil pengamatan dan perhitungan melalui analisa sidik ragam dapat ditarik kesimpulan bahwa yang memberikan produksi tinggi pada tanaman kacang tanah yaitu perlakuan pupuk mikoriza 200 kg/ha dan pupuk phonska 100 kg/ha

Effects of Controlled Released Urea on the Yield and Nitrogen Nutrition of Flooded Rice

Nitrogen (N) loss is one of the key problems faced by rice farmers, and Nitrogen-use efficiency in rice is often poor as a result of high N loss through volatilization, leaching, and denitrification. One of the ways to improve N efficiency is by using controlled-release area (CRU). The CRU generally outperformed granular urea fertilizer in reducing N losses, stimulating plant growth, and increasing N concentrations. A field experiment with the flooded rice variety MR220 was conducted to compare the effect of six different types of CRU fertilizers on yield and N nutrition of a flooded rice cultivar. Bakau series soil (Typic Tropaquept) was used in this study. Rice plants were grown in a cylindrical culvert measuring 90 cm in diameter by 60 cm in height, and all culverts were filled with soil (approx. 210 kg). The soil was flooded and preincubated for 3 weeks to stabilize physiochemical properties before sowing. The experiment was carried out over two planting seasons on the same plot using a completely randomized design (CRD) and was replicated three times. The CRUs evaluated were CDU Uber-10, Meister-20, Meister-27, humate-coated urea, Duration type V, and sulfur-coated urea (gold-N). Fertilizer was applied once throughout the study. For both seasons, CRU-treated plants had significantly greater rice yields [6 t ha-1 (first planting harvest) and 6.2 t ha-1 (second planting harvest)] than urea-treated plants [3.7 t ha-1 (first planting harvest) and 2.2 t ha-1 (second planting harvest)], respectively. The N accumulations in rice straw and rice grains of the CRU-treated plot were significantly greater than in the control. It can be inferred that CRU performs significantly better than granular urea. This finding is important, considering the usually high N losses in rice-growing areas

Pengurusan keselamatan dan kesihatan pekerja di tapak pembinaan: Perspektif kontraktor

Akta Keselamatan dan Kesihatan Pekerjaan (AKKP) 1994 telah diperkenalkan di Malaysia untuk memupuk, merangsang dan meningkatkan mutu keselamatan dan kesihatan di tempat kerja terutamanya di tapak pembinaan.Tujuan utamanya ialah untuk meningkatkan sikap keprihatinan majikan atau organisasi terhadap keselamatan dan kesihatan para pekerja mereka, selain menitikberatkan langkah-Iangkah keselamatan pekerjaan yang berkesan.Bagaimanapun, kadar kemalangan dalam sektor pembinaan dilihat berada ditahap yang sangat membimbangkan kebelakangan ini. Hal ini kerana industri pembinaan merupakan industri yang unik dengan kerja yang berbagai bidang dan perlu disiapkan dalam masa yang terhad. Kajian ini membincangkan mengenai amalan, masalah, dan strategi yang dijalankan dalam pengurusan keselamatan dan kesihatan pekerjaan mengikut perspektif kontraktor.Kajian ini menggunakan kaedah kualitatif.Satu temubual telah dijalankan di sebuah syarikat kontraktor area Alor Setar, Kedah yang berpengalaman dalam industri pembinaan untuk mendapatkan maklumat kajian.Hasil kajian ini mendapati terdapat beberapa amalan keselamatan dan kesihatan pekerjaan yang dilaksanakan seperti dasar keselamatan, mesyuarat keselamatan dan kesihatan, pendidikan dan latihan, pemeriksaan keselamatan tapak, dan peralatan perlindungan peribadi (PPE).Masalah yang dihadapi seperti sikap pekerja dan tahap kesedaran yang rendah di kalangan para pekerja.Beberapa strategi telah dilakukan seperti membuat pemeriksaan secara kerap, serta pendidikan dan latihan yang lebih berkesan

Effect of Dried Sewage Sludge on Compressive Strength of Concrete

Sewage sludge is a waste product generated from the wastewater treatment process at the treatment plant. The amount of sewage sludge produced is increases every year as the population increased. Poor management of sewage sludge will give negative impact to the environment. Replacing cement with sewage sludge ash is more significant to reduce the amount of waste material from sewage treatment plants. In this study, the various percentage of dried sewage sludge (DSS) has been added to replace the cement. Sewage sludge was dried in the oven with 100°C for 24 hours, then sieve through the sieve size 300 µm. Then, DSS was used in the concrete instead of cement with the replacement percentage of 0%, 5%, 10%, and 15% by weight. The compressive strength of concrete cube specimens was investigated after 7 and 28 days of curing. The results showed that the compressive strength of concrete specimens increased with the replacement of cement in concrete with 5 % to 10 % DSS, but the achieved maximum strength still lower compared to the control sample. However, the compressive strength of concrete specimens decreased when the DSS replacement of cement is more than 10 % by weight. The result of XRF test also showed that DSS has good potential to replace cement in concrete

Case studies of occupational safety and health management in construction site : contractor's perspective

Occupational Safety and Health Act (OSHA) 1994 was introduced in Malaysia to foster, stimulate and improve safety and health in the workplace, especially on construction sites. The main objective of OSHA is to increase employer or organization caring attitude towards safety and health of their employees in addition to emphasizing job security measures are effective. However, at present, the accident rate in the construction sector is seen alarming. This is because the construction industry is a unique industry with the involvement of people from various fields and a construction project should be completed within a limited time. This study discusses about the practices, issues, and strategies applied in the management of occupational, safety and health from the perspective of the contractor. This study used a qualitative method where an interview was conducted in a contractor who is experienced in the construction industry. The results of this study found that there were a number of occupational health and safety practices are implemented as base security, safety and health meetings, education and training, site safety inspections, and personal protective equipment. The main problem that contributed to the problems faced by the accident is due to the attitude of the workers and the low level of awareness among employees. Several strategies have been carried out such monitoring work on a regular basis in addition to emphasizing the educational aspects of security in addition to provide more effective training

A Review of Porous Concrete Pavement: Compressive Strength and Clogging Investigation

Pervious concrete pavements (PCPs) have been widely accepted as a green infrastructure solution for urban areas. Currently, pervious concrete is commonly used in permeable pavement systems such as roadways, sidewalks, driveways, parking lots, and other light-duty flatwork applications. However, the main disadvantage of this type of pavement is that it loses permeability over time due to clogging and lower compressive strength due to the pore's structures. These critical issues are the topic of this review paper. Laboratory test results relevant to the compressive strength, clogging and maintenance are discussed in detail. This review aims to present a compilation of prominent findings of studies focused on compressive strength, clogging and maintenance of PCPs. Note that PCPs with higher compressive strength must be used on roads with high traffic volumes. Subsequently, periodic maintenance is necessary to prevent sediment clogging and maximise the life of PCPs. Based on this review paper, the area of need for future research are identified

Electrochemical degradation of methylene blue using Ce(Iv) ionic mediator in the presence of Ag(I) ion catalyst for environmental remediation

Methylene blue (MB) is often used in textile industries and is actively present in the wastewater runs-off. Recently, mediated electrochemical oxidation (MEO) offers a fast, reliable and promising results for environmental remediation. Thus, we aimed to evaluate the electro-degradation potential of MB by MEO using Ce(IV) ionic mediator. Furthermore, we also observed the influence of addition Ag(I) ion catalyst in MEO for degradation of MB. The electro-degradation of MB was evaluated by cyclic voltammetry technique and was confirmed by UV-Vis spectrophotometry, high performance liquid chromatography (HPLC) analysis and back-titration analysis. The results showed that in the absence of Ag(I) ion catalyst, about 89 % of MB was decolorized within 30 min. When 2 mM of Ag(I) ion catalyst was applied, the electro-degradation of MB was increased to maximum value of 100%. The UV-Vis spectrum confirmed the electro-degradation of MB as suggested by decreased maximum absorbance value at λ 668 nm from 2.125 to 0.059. The HPLC analysis showed the formation of five new peaks at retention time of 1.331, 1.495, 1.757, 1.908, and 2.017 min, confirming the electro-degradation of MB. The back-titration analysis showed about 52.9% of CO2 was produced during electro-degradation of MB by MEO. More importantly, more than 97% of Ce(IV) ionic mediator were recovered in our investigation. Our results showed the potential of MEO using Ce(IV) ionic mediator to improve the wastewater runs-off quality from textile as well as other industries containing methylene blue

Sistem ‘Indus-Train’: medium pemantauan dan penilaian pelajar semasa latihan industri / Amminudin Ab Latif … [et al.]

Latihan industri merupakan satu kursus wajib dalam program Diploma Kejuruteraan Awam, UiTM Pahang bagi memberi pendedahan amalan kejuruteraan yang sebenar kepada para pelajar dan untuk memenuhi keperluan kelayakan akreditasi 'Engineering Technician Accreditation Council'(ETAC). Namun begitu, proses penilaian dan pemantauan ke atas pelajar yang menjalani latihan industri adalah tidak sistematik kerana buku log tidak lengkap, rubrik pemarkahan tidak spesifik, penilaian oleh pensyarahyang bukan dalam bidang kepakarannya, tiada dan tidak berkala lawatan dan pemeriksaan ke tapak oleh penyelia fakulti, tiada pemantauan aktiviti harian oleh penyelia fakulti serta laporan akhir tidak berformat. Dalam era globalisasi kini, kaedah ini seharusnya perlu ditambahbaik bagi memastikan latihan industri pelajar lebih sistematik, berdaya saing, mengurangkan kos pengurusan serta mencapai kelestarian dalam penilaian latihan industri. Oleh itu, sistem 'Indus-Train' telah dibangunkan oleh Kumpulan Inovatifdan Kreatif(KIK) (CivTEX), FKA UiTM Pahang bagi membantu jabatan menyelesaikan masalah-masalah yang berbangkit berkaitan dengan pemantauan dan penilaian latihan industri. Impakpositif utamayang diperoleh adalahpeningkatan pencapaianpelajar dalam hasil kursus (CO) secara spesifiknya COl iaitu peningkatan 13.2%. Disamping itu,sistem ini juga menjimatkan masa dan mengurangkan kos. Nilai tambah sistem ini adalah sijil latihan industri dapat dicetak pada akhir semester dan melalui kod bar sijil ini, ia dapat diimbas menggunakan aplikasi khas telefon pintar untuk melihat segala laporan aktiviti-aktiviti pelajar ketika menjalani latihan industri. Sijil ini boleh dijadikan salah satu dokumen bagi tujuan permohonan pekerjaan

Relationship between international roughness index (IRI) and present serviceability index (PSI)

A good road structure may help in reducing the number of accident. Wearing course is the top layer of road structure which is the layer that exposed to the vehicle tires and environment. The International Roughness Index (IRI) and Present Serviceability Index (PSI) are both index that can be used as indicators of road roughness and serviceability. IRI was measured by using the walking profilometer.PSI data was collected manually. Both IRI and PSI was measured along the 100 m section of road. This study only focused on one type of road which was asphaltic pavement located in UTM (University Teknologi Malaysia). The objectives of this study are to determine the IRI, PSI and relationship between IRI and PSI. The statistical analysis which is R2 value was used to evaluate the relationship between IRI and PSI. From this study, it was found that the IRI value increased when the PSI value is decreased. Mostly, the roughness of tested road for this study is unacceptable based on JKR (Jabatan Kerja Raya) Specification. While the PSI rating shows the tested road for this study is still in good condition