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Pengaruh Kombinasi Zeolit, Serbuk Gergaji, dan Pasir sebagai Media Tumbuh Rumput Bermuda (Cynodon dactylon Cv. Tiffdwarf) terhadap Kualitas Fungsionalnya Nasrullah, Nizar; Ansari, Kgs. Azhar
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 28 No. 1 (2000): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1076.631 KB) | DOI: 10.24831/jai.v28i1.1551

Abstract

The objective of the study is to investigate the effect of the mixture of sow dust, zeolit, and sand as media on turf qualities of Bermuda Grass (Cynodon dactylon var. Tiffdwarf). There are 6 treatments of planting media including : sand 100%, sand 75 % + saw dust 25 % + zeolit 0 %, sand 50 % + sow dust 50 % + zeolit 0 %, sand 50 % + sow dust 25 % + zeolit 25 %, and sand 50 % + sow dust 0 % + zeolit 50 %. The treatment have 3 replication ang arranged in Randomized Block Design. Analysis of media show the addition of sow dust 25 - 50 % into sand media increased physical qualities of media including the  increasing of the water content of media and decreased bulk density of the media. The addition of sow dust 25 % into sand media perform the best qualities of turf compared to the other media including of dry weight of shoots, density of shoot, height of shoot, length of root and the shoot - root ratio.  
Pengaruh Pemupukan Urea dan Nitrogen Slow Release Terhadap Pertumbuhan dan Kualitas Rumput Lapangan Golf Nasrullah, Nizar; Tunggalini, Ni Ketut Wuri
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 28 No. 2 (2000): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (842.356 KB) | DOI: 10.24831/jai.v28i2.1567

Abstract

The objectives of this study is to investigate the effect of (Urea) and Polymer Coated Urea (Slow Release N - Fertilizer) on the growth and quality of turf Bermuda grass (Cynodon dactylon var. Tifdwarf.) and to find the optimum rate. Treatments are urea and PCU rate at 4.5 g, 9.0g and 13.5 g N/m2/application, respectively. The experiment was arranged in Randomized Block design with 3 replications. Fertilizers were applied 6 times in every 2 locals. The result showed that in the end of the experiment, the higher values of grass height. number of shoots resiliance. Fresh and dry weight were obtained with PCU /3.5 g N/m2/application. The highest dosage of PCU resulted d the highest quality of turf grass.   Key words: Urea, Polymer Coated urea, Bermuda grass
Penilaian AHP Jalur Hijau Koridor Transjakarta 8 DKI Jakarta Berdasarkan Fungsi Ekologis Vegetasi Musfira, Lasta; Nasrullah, Nizar; Sulistyantara, Bambang
Jurnal Ilmu Pertanian Indonesia Vol. 29 No. 1 (2024): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.29.1.21

Abstract

Greenbelt and green infrastructure are still very limited in Jakarta. Transjakarta Corridor 8 Harmoni - Lebak Bulus covers Central Jakarta, West Jakarta, and South Jakarta which are government centers and densely populated settlements. The high activity in the area causes an increase in transportation flows and greenhouse gas emissions. The transportation sector is the highest contributor to CO2e emissions in the capital city, thus reducing environmental quality, especially the greenbelt in Transjakarta Corridor 8. The assessment of ecological functions in this study consists of 7 variables, namely noise reduction, pollution reduction, air humidity, view control, glare control, direction and accident prevention. The research location is divided into 5 segments with the analysis method used, namely the assessment of ecological function aspects and the formulation of recommendations based on Hierarchical Process Analysis. The results of the assessment on ecological functions with noise-canceling variables were (Polyalthia longifolia) Glodongan Tiang, (Casuarina sp.) Spruce, (Acacia auriculiformis) Acacia, and (Archontophoenix alexandrae) Alexander Palm. The results of the pollution reduction assessment of each segment are dominated by vegetation types (Mangifera indica) Mango, (Polyalthia longifolia) Glodongan Tiang, (Carbera odollam) Bintaro. Based on the results of the questionnaire, the AHP assessment weight was obtained. The combined AHP results show the highest priority scale for the evaluation recommendations of this research is Pollution Reduction as the most important variable with a weight of 0.348, the second rank is Accident Reducer with a weight of 0.300, the third rank is Glare Control with a weight of 0.150. The combined results of 3 experts produce a consistency ratio value of 0.05, the consistency ratio value of 0.05 is smaller than 0.10 so it can be said to have met the consistent requirements. Keywords: analytical hierarchy process, emission, roadside greenbelt