Analisis Kekritisan Lahan Pada Fungsi Kawasan Konservasi DAS Citarum Dengan Software Arcgis

Penelitian dilakukan pada Kawasan Konservasi di wilayah DAS Citarum salah satu DAS prioritas di Indonesia dan merupakan sungai terbesar dan terpanjang di Jawa Barat. Limabelas Kawasan konservasi yang merupakan hulu dari DAS citarum berperan penting sebagai penyangga kehidupan dan pengaruh tata air daerah dibawahnya.Analisis Kekritisan Lahan pada Fungsi Kawasan Konservasi DAS Citarum dengan Software ArcGIS dilakukan dengan tujuan untuk mengetahui berapa luas tingkat kekritisan lahan dan faktor-faktor apa yang menentukan tiap tingkat kekritisan lahan pada kawasan koservasi di wilayah DAS Citarum.Dalam menentukan tingkat keritisan lahan pada kawasan konservasi di DAS Citarum, menggunakan Software ArcGIS yang merujuk kepada Surat Keputusan Direktur Jenderal Reboisasi dan Rehabilitasi Lahan Nomor. 41/Kpts/V/1998 jo. Surat Keputusan Direktur Jenderal Rehabilitasi Lahan dan Perhutanan Sosial Nomor. SK.167/V-SET/2004, variabelnya meliputi ; tutupan lahan, kemiringan lereng, kepekaan erosi dan manajemen pengelolaan.Hasil analisis lokasi penelitian fungsi kawasan konservasi seluas 15.595,70 Ha, didominasi oleh kelas Agak Kritis seluas 8.999,58 Ha dan Potensial Kritis seluas 6.318,91 Ha dengan kontribusi sebesar 98,23% menyebar hampir pada setiap kawasan konservasi. Sedangkan kelas Kritis seluas 249,43 Ha (1,60%), kelas Sangat Kritis seluas 27,15 Ha (0,17%) dan tidak terdapat kelas Tidak Kritis.Berdasarkan analisis korelasi dengan menggunakan software IBM SPSS Statistics 23, faktor yang berpengaruh terhadap setiap tingkat kekritisan lahan pada kawasan koservasi di wilayah DAS Citarum yaitu tutupan lahan yang menunjukan hubungan positif (signifikan). Nilai korelasi pada kelas sangat kritis sebesar 0,781 (R2=61,00%), kelas kritis sebesar 0,302 (R2=9,12%), kelas agak kritis sebesar 0,523 (R2=27,35%) dan pada kelas potensial kritis sebesar 0,367 (R2=13,47%). Dapat disimpulkan bahwa pada kawasan konservasi di DAS Citarum variabel tutupan lahan merupakan faktor yang sangat mempengaruhi terhadap tingkat kekritisan lahan.Pengelolaan kawasan konservasi dapat difokuskan terhadap upaya perlindungan dan pengawetan kawasan yang merupakan dua dari tiga pilar konservasi, sehingga dapat menurunkan tingkat kekritisan lahan pada kawasan konservasi tersebut.

Pengaruh Konsentrasi Jus Lidah Buaya (Aloe cbinensis Baker) Terhadap Pertumbuhan Planlet Anggrek Hasil Silangan Dendrobium Morning Sun X Dendrobium Samarai

This experiment aims was to study the effect of the concentration of aloe vera juice and to get the concentration of aloe vera juice which shows better growth of the number of leaves and the number of roots on the Dendrobium orchid plantlet in Hybrid-vitro results. This experiment was carried out at the Tissue Culture Laboratory, Faculty of Agriculture, Winaya Mukti University, which began in May to August 2019. The experimental design was used a Completely Randomized Design with 5 treatments in 5 replications and the treatments namely: A (0 g L-1 solution), B (25 g L-1 solution), C (50 g L-1 solution), D (75 g L-1 solution), E (100 g L-1 solution). The results showed that consentration of B (25 g L-1 solution), C (50 g L-1 solution), D (75 g L-1 solution) gave plantlet height, number of shoots, number of roots, and root length better than another treatments.

Pengaruh Konsentrasi Pupuk Organik Cair Dan Takaran Pupuk Kandang Sapi Terhadap Pertumbuhan Dan Hasil Tanaman Selada (Lactuca sativa L.) Varietas Grand Rapids

The aim of this experiment was to study the effect of concentration liquid organic fertilizer and doses cow manure on the growth and yield of grand rapids variety of lettuce, carried out in the practice of Tanjungsari Sumedang SMK PPN, located at an altitude of 850 meters above sea level. The experiment starts from June 2018 to August 2018. The experimental design used was a Randomized Design facto pattern group consisting of two factors and repeated three times. The first factor is liquid organic fertilizer nasa (p) with 5 levels: p1 = 0 ml / liter of water, p2 = 1 ml / liter of water, p3 = 2 ml / liter of water, p4 = 3 ml / liter of water, p4 = 4 ml / liter of water. The second factor is cow manure (k) consisting of 4 levels, namely: k1 = 0 ton / ha, k2 = 5 ton / ha, k3 = 10 ton / ha, k4 = 15 ton / ha. The results of the experiment show: There was no interaction between liquid organic fertilizer and cowshed fertilizer on observations of plant height, number of leaves, weight per plant, weight per sample, weight per plot and root volume in lettuce. The treatment of liquid organic fertilizer at concentrations of p3 (3,0 ml/liter of water) showed the best results on plant height, number of leaves, and yield of weight per plot and significantly different from observations of weight per plant and root volume. Cow manure showed no significant effect on all plant height, number of leaves, weight per plant, weight per sample, weight per plot and root volume in lettuce.

Pengaruh Populasi Ikan Lele Dan Jenis Media Tanam Terhadap Pertumbuhan Dan Hasil Tanaman Bayam (Amaranthus Sp.) Pada Sistem Akuaponik

This study aims to study the interaction between catfish populations and the type of growing media on the growth and yield of spinach (Amaranthus sp.) Cultivated by the aquaponics system. This research was conducted using an experimental method (experiment), from July to August 2020 in the experimental area of the PUSKOPAD complex, Tanjungsari District, Sumedang Regency. at an altitude of 850 m above sea level. The experimental design used was the Split Plot Design with the basic design of the RAK. Which consists of 2 factors with 2 repetitions. The first factor or mainplot is the catfish population (i) which consists of 4 levels, namely: (i1) = 0 tails, (i2) = 10 tails, (i3) = 20 tails, (i4) = 30 tails. The second factor or subplot is the type of planting medium (m) which consists of 4 types, namely: (m1) = Rockwool, (m2) = Oyster mushroom waste, (m3) = husk charcoal, (m4) = Pumice stone. Based on the results of experiments regarding the influence of catfish populations and the type of growing media on the growth and yield of spinach grown in the aquaponic system. That there was an interaction between the treatment of catfish populations and the type of planting medium on the parameters of the observation of plant height at 20 days after planting (DAS) and 30 DAS and leaf number at 10 DAS and 35 DAS. The use of pumice growing media is best used for the cultivation of spinach in an aquaponic system and a population of 20 catfish is sufficient to provide the nutrient needs needed by spinach plants.

Pengaruh Konsentrasi Dan Lama Inkubasi Kolkisin Terhadap Duplikasi Kromosom Planlet Terung (Solanum melongena L.) Haploid Galur Aksesi Hasil Kultur Antera

The purpose of this study was to determine the effect of colchicine on chromosome duplication and to determine the best colchicine concentration and incubation time for haploid eggplant chromosome duplication results from anther culture. Laboratory experiments have been carried out at PT. East West Seed Indonesia, Benteng Village, Campaka District, Purwakarta from March to June 2020. With an altitude of 69 m above sea level. The environmental design used in this study was a completely randomized design consisting of 7 treatments and repeated 4 times. Colchicine treatment design A = Control, B = colchicine 0.05% 24 hours incubation, C = colchicine 0.05% 48 hours incubation, D = colchicine 0.1% 24 hours incubation, E = colchicine 0.1% 48 hours incubation, F = kolkisisn 0.15% incubation 24 hours, G = colchicine 0.15% incubation 48 hours. The responses observed were contamination, callous plantlets, rooted plantlets, live plantlets, haploid plantlets, double haploid plantlets, triploid plantets and unreadable ploidy check results. The results showed that the colchysis concentration and incubation time had an effect on the duplication of haploid eggplant plantlet chromosomes resulting from anther culture. And giving colchicine at a concentration of 0.05% with an incubation time of 48 hours and a colchicine concentration of 0.1% with an incubation time of 48 hours had a significant effect on the double haploid plantet of 23.44%.