Root Morphology of Eight Hybrid Oil Palms Under Iron (Fe) Toxicity

The research aims to study the change of morphology root characters of eight hybrid oil palms under iron toxicity (Fe). Field experiment done in arranged in a Randomized Complete Block Design (RCBD) two factors and three blocks as replications. The first factor was Fe concentration. It consists of two levels which are concentration 0µ.g-1 and concentration 600 µg.g-1 Fe. The second factor is the hybrid of oil palms which consists of eight hybrid oil palms as Yangambi, Avros, Langkat, PPKS 239, Simalungun, PPKS 718, PPKS 540 and Dumpy. Fe was applied by pouring FeSO4 solvent for 600 µg.g-1 500 ml.-1plant.-1day-1 on two months of plants after transplanting in the main nursery. Data were collected on root morphology and plant dry weight The data were analysis of variance (ANOVA) at 5% significanly, followed by Duncan's multiple range test (DMRT). The relationships by among variables were determined by correlation analysis. The results showed that Fe concentration 600 µg.g-1 inhibits relatively root growth rate, narrows surface area, reduces the diameter, and shrinks root volume of all hybrid oil palms tested. The slowing relatively root growth rate, narrowing of root surface area and root diameter also root volume shrinkage due to Fe stress. It was also shown that the dry weight of plants was inhibit by existing of Fe toxicity

SOSIALISASI DAN PENERAPAN REBOISASI TANAMAN MANGGA DI PERKOTAAN

Pertumbuhan pemukiman menjadi penyebab utama perkembangan kota yang kurang sehat dan cenderung terjadi penyimpangan dalam penggunaan lahan. Konversi lahan pertanian menjadi ekosistem urban berupa perumahan, dan pemukiman berdampak pada daerah resapan air yang berkurang sehingga dapat menyababkan banjir dan erosi tanah. Kegiatan pengabdian ini bertujuan untuk menyelenggarakan reboisasi pada lahan hanian baru di wilayah Solo atau Surakarta. Kegiatan dilaksanakan di Tegal Asri RT 03/ RW 17, Kelurahan Banjarsari, Kecamatan Banjarsari, Kota Surakarta dengan mitra Kelompok Wanita Tani (KWT) Amara Gardenia, Kelurahan Banjarsari. Metode pengabdian masyarakat dibagi menjadi tiga kegiatan yaitu: 1) sosialisasi budidaya mangga, 2) simulasi penanaman, pemeliharaan tanaman dan pembagian benih mangga, 3) evaluasi penanaman benih sambung pucuk mangga. Hasil kegiatan pengabdian ini menambah pengetahuan masyarakat terkait pemanfaatan lahan untuk budidaya tanaman manga dan konversi lingkungan. Budidaya tanaman mangga telah dilakukan masyarakat dengan penanaman bibit dari sambung pucuk. Teknologi produksi tanaman mangga bertujuan untuk mendukung lingkungan serta timbulnya motivasi masyarakat khususnya dalam pengembangan Ilmu Pengetahuan dan Teknologi (IPTEK) khususnya bidang pertanian yang terbukti adanya peran aktif KWT selama pelaksanaan pengabdian. Kata kunci: budidaya, perkotaan, perbanyakan vegetative, sosialisasi ABSTRACT The growth of settlements is the main cause of unhealthy urban development and tends to occur in irregularities in land use. The conversion of agricultural land into urban ecosystems in the form of housing and settlements has an impact on reduced water catchment areas so that it can cause flooding and soil erosion. This service activity aims to organize reforestation on new hanian lands in the Solo or Surakarta area. The activity was carried out in Tegal Asri No.03/17, Banjarsari Village, Banjarsari District, Surakarta City with the partner of the Women Farmers Group (WFG) Amara Gardenia, Banjarsari Village. The community service method is divided into three activities, namely: 1) socialization of mango cultivation, 2) simulation of planting, plant maintenance and distribution of mango seeds, 3) evaluation of planting mango shoot grafting seeds. The results of this service activity increase public knowledge regarding land use for manganese cultivation and environmental conversion. Mango cultivation has been carried out by the community by planting seedlings from shoot grafting. Mango production technology aims to support the environment and the emergence of community motivation, especially in the development of Science and Technology in the agricultural sector which is proven by the active role of Women Farmers Group during the implementation of service. Keywords: cultivation, urban, vegetative propagation, socializatio

Pengaruh Ekstrak Gulma dan Bahan Alami terhadap Pertumbuhan dan Hasil Caisim (Brassica chinensis L.)

Penggunaan alelokimia sebagai bioherbisida berpotensi untuk pengendalian gulma yang ramah lingkungan. Penelitian dilakukan untuk mengetahui pengaruh ekstrak gulma dan bahan alami terhadap pertumbuhan dan hasil caisim (Brassica chinensis L.). Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan konsentrasi ekstrak gulma dan bahan alami sebagai faktor tunggal. Terdapat 16 perlakuan yang diulang sebanyak 3 kali dan setiap perlakuan terdiri dari 2 polybag sehingga terdapat 48 satuan percobaan dengan 96 tanaman caisim sebagai sampel amatan.. Data yang telah terkumpul kemudian dianalisis menggunakan analysis of variance (ANOVA) dan jika menunjukkan perbedaan yang nyata, maka diuji lebih lanjut dengan uji DMRT pada taraf 5%. Hasil penelitian menunjukkan bahwa ekstrak gulma dan bahan alami berpengaruh nyata terhadap tinggi tanaman 35 HST, jumlah daun 21 HST, bobot segar tanaman, dan bobot kering tanaman. Ekstrak daun Euphorbia heterophylla pada konsentrasi 200 g L-1 nyata mampu meningkatkan tinggi tanaman, dan bobot segar tanaman, ekstrak daun Cyperus rotundus konsentrasi 120 g L-1 mampu meningkatkan berat kering tanaman, sedangkan ekstrak Terminalia catappa pada konsentrasi 200 g L-1 dan Melaleunca laucadendron pada konsentrasi 40 g L-1 meningkatkan jumlah daun pada umur 21 HST.Kata kunci: alelokimia, bioherbisida, konsentrasi, produksi, tanaman sayuranThe use of allelochemicals as bioherbicides has the potential for environmentally friendly weed control. Research was conducted to determine the effect of weed extracts and natural substances on the growth and yield of Chinese cabbage (Brassica chinensis L.). This study used a Completely Randomized Design (CRD) with weed extract concentration and natural substances as the single factor. There were 16 treatments repeated 3 times, and each treatment consisted of 2 polybags, resulting in a total of 48 experimental units with 96 caisim plants as observed samples. The data that has been collected then analyzed using analysis of variance (ANOVA) and if it shows the significant effect, then it is further tested with the DMRT test at the significant level with α 5%. The results showed that weed extracts and natural ingredients significantly affected plant height 35 DAP, number of leaves 21 DAP, stem fresh weight, fresh weight of plant, and dry weight of plant. Euphorbia heterophylla leaf extract at a concentration of 200 g L-1 was able to increase plant height, and fresh weight of plant, Cyperus rotundus leaf extract at a concentration of 120 g L-1 was able to increase dry weight of plant, while Terminalia catappa extract at a concentration of 200 g L-1 and Melaleunca laucadendron at a concentration of 40 g L-1 was increased the number of leaves at the age of 21 DAP.Keywords: allelochemicals, bioherbicide, concentration, production, vegetable plant

GGE-Biplot Analysis for Soybean Varieties Suitability in an Agroforestry System based on Kayu Putih Stands

The existence of genotype and environment (G x E) interaction causes difficulty in selecting suitable varieties of soybean in an agroforestry system based on kayu putih stands. This study aimed to determine the suitability of adaptive, stable and high yield soybean varieties in an agroforestry system based on kayu putih stands by using GGE-Biplot analysis. The experiment was conducted from May to August 2018 at Menggoran Forest Resort, Playen District, Gunung Kidul Regency, Special Region of Yogyakarta, Indonesia. The experiment was conducted using a randomized complete block design (RCBD) with five block as replications. The first factor was soil type in Menggoran Forest Resort, consisting of Lithic Haplusterts, Vertic Haplustalfs and Ustic Endoaquerts. The second factor was soybean varieties, consisting of Anjasmoro, Argomulyo, Burangrang, Dering I, Devon I, Gema and Grobogan. The observation was carried out on seed dry weight of soybean per hectare. The data were analyzed using Combined Analysis of Variance (ANOVA) with α = 5% and GGE-Biplot. Dering I was the most suitable varieties in an agroforestry system based on kayu putih stands and showed the mean of highest yield of 1.22 tons ha-1

GROWTH ANALYSIS AND PRODUCTIVITY OF SOYBEAN-MAIZE IN INTERCROPPING PATTERN AND SALOME PATTERN

The purpose of this study was to find out how the best use of sunlight efficiency between intercropping and salome cropping systems is to compare the best production of both intercropping and salome cropping systems. The experiment was conducted at the Experimental Garden of Agriculture Faculty, Gadjah Mada University, Banguntapan, Bantul, Yogyakarta, starting on May 2015. The experiment was conducted on a plot of land measuring 4 x 7 m2. This experiment used a Randomized Randomized Complete Block Design (RCBD) consisting of one treatment factor namely planting system, with 2 treatment levels: intercropping System of Soybean-Maize (S1) and Salome Cropping System (S2). Salome cropping pattern gives better yield of maizecobs than 1: 2 intercropping. Salome cropping pattern decreases the number and weight of freshly ground soybean pods compared to 1: 2 intercropping system