PERTUMBUHAN STEK BATANG CINCAU HIJAU (Premna oblongifolia Merr) AKIBAT PEMBERIAN PUPUK ORGANIC CAIR DAN PUPUK NPK PADA TANAH GAMBUT

Green cincau (Premna oblongifolia Merr) is a functional food plant that needs to be developed because it functions as a refreshing plant and has high chlorophyll content to increase endurance and its phytochemical content which is useful for overcoming various diseases. Green cincau (Premna oblongifolia Merr) in peat soils have not been widely cultivated due to the constraints of low soil fertility. This research is basic research aiming to determine the effect of using liquid organic fertilizers and inorganic fertilizer on the growth of green cincau in peat soil. The research was conducted in the greenhouse of the Department of Agronomy and soil analysis was carried out at the UPR Integrated Laboratory. This research used a factorial completely randomized design (CRD) consisting of 2 factors, namely factor I (Liquid Organic Fertilizer) consisting of 3 types, namely: P0 = without liquid organic fertilizer; P1 = Agrobost liquid organic fertilizer; P2 = Nasa liquid organic fertilizer; Factor II (NPK Inorganic Fertilizer) which consists of 3 levels, namely: N0 = NPK 0 g polibag-1; N1 = NPK 1 g polibag-1; N2 = NPK 2 g polibag-1. There were 9 treatment combinations, the replication was carried out 3 times so that there were 27 experimental units. Growth observation variables included a number of shoots, shoot length, number of leaves, leaf area, leaf fresh weight, number of roots, root length, and root fresh weight. Data were analyzed by analysis of variance (F test) at the 5% level, if the effect was significant, then tested it with the 5% BNJ test. The results showed that the interaction of liquid organic fertilizer and NPK inorganic fertilizer did not significantly affect all variables. The application of liquid organic fertilizer affects the number of leaves, leaf area, leaf fresh weight, number of roots and root fresh weight. Nasa organic fertilizer provides better growth than Agrobost with 13.42 leaves shoots-1, 2,623.40 cm2 leaf area polibag-1, 47.02 g polibag-1 fresh leaf weight, 12 roots number polibag-1 and 1.55 root weight g polibag-1. NPK inorganic fertilizer at a dose of 2 g polibag-1 resulted in better leaf fresh weight, namely 45.64 g polibag-1

APLIKASI INSEKTISIDA NABATI BERBAHAN TANAMAN RAWA UNTUK MENGENDALIKAN HAMA KEDELAI ULAT GRAYAK (Spodoptera litura) DI LAHAN RAWA PASANG SURUT

One type of pest that often attacks soybean plant leaves in tidal swamplands is the armyworm pest. The intensity of leaf damage due to armyworm attack in tidal swamps ranges from 30-95%, and can even lead to crop failure. In controlling pests in soybean plants in general, always rely on chemical insecticides. The use of these chemical insecticides has a negative impact on the environment. To overcome this, the control is directed towards environmentally friendly pest control by utilizing swamp plants as a botanical insecticide. The study used a randomized block design (RBD) with 3 treatments of swamp plant extracts (galam, kirinyuh, kepayang) and 3 controls, namely without control, botanical insecticide made from neem, chemical insecticide with the active ingredient kloraniliprol. The aim of this study was to obtain a swamp plant extract that could be used in controlling armyworm pests (Spodoptera litura). The results showed that the three types of swamp plants could be used as botanical insecticides in controlling armyworm pests, and has an effectiveness value above 70%. The highest effectiveness of botanical insecticides was obtained at the age of 75 DAP, namely Galam (78.29%), Kirinyuh (78.86%) and Kepayang (78.85%).

PEMATAHAN DORMANSI BENIH KELAPA SAWIT (Elaeis guinensis Jacq.) MENGGUNAKAN KALIUM NITRAT (KNO3) DAN AIR KELAPA

The aim of this study were, 1) to find out and study the effect of KNO3 immersion treatment on oil palm seed germination; 2) to find out and study the effect of coconut water immersion treatment on oil palm seed germination; 3) to find out and study the interactions that occur between KNO3 immersion treatment and coconut water to oil palm seed germination. This research was conducted in July 2019 until August 2019 in the Laboratory of the Department of Agriculture Cultivation, Faculty of Agriculture, Palangka Raya University using a Completely Randomized Design with 2 factors. The first factor is the concentration of KNO3: K0 (0%); K1 (0.2%); K2 (0.4%); K3 (0.6%) and the second factor is coconut water concentration, B0 (0%); B1 (60%); B2 (80%); B3 (100%). The parameters observed were first count germination, maximum growth potential, germination power, growth speed, radicle length, plumular length and dormancy intensity. The results showed that the treatment of KNO3 concentration significantly affected first count germination, maximum growth potential, germination rate, growth speed and dormancy intensity. Treatment of coconut water concentration significantly affected first count germination, maximum growth potential, germination rate, growth speed and dormancy intensity. The interaction between the treatment of KNO3 concentration and coconut water concentration had no significant effect on all observed parameters

POLA KONSUMSI BERAS RUMAH TANGGA BERDASARKAN GOLONGAN PENDAPATAN DAN FAKTOR-FAKTOR YANG MEMPENGARUHINYA DI KOTA PALANGKA RAYA

Rice is a basic requirement for the people of Central Kalimantan Province. The biggest consumption of rice comes from household consumption. Households with different income levels will have different consumption patterns. With this situation, this research is important to determine how the pattern of household rice consumption is based on income groups and what factors influence the pattern of household rice consumption based on income groups in the City of Palangka Raya. This study uses primary data and secondary data. The research analysis uses descriptive analysis and quantitative analysis. Quantitative analysis uses multiple linear regression analysis with Ordinary Least Square (OLS). The econometric model used is the double log model assisted by using the Eviews 9.0 application. The results of the study showed that the factors that significantly influenced the consumption pattern of household income were the number of house members and the age of the household head. In the high income group the factors that significantly influence are the dummy marital status of the head of the household, the age of the head of the household has a positive effect and the number of household members has a negative influence and each has a significant effect on household rice consumption.

UJI DAYATARIK TIGA MERK ATRAKTAN UNTUK PENGENDALIAN HAMA LALAT BUAH (Bactrocera spp.) PADA TANAMAN SAYURAN DAN BUAH-BUAHAN

Fruit flies are an insect whose existence is very detrimental because of their role and function as the main pests for vegetable and fruit farmers. For that, we need technology that can suppress the population to increase crop production. The purpose of this study is to obtain information about the ability of three attractant brands on the market to attract male fruit flies, namely Ferokop, Petrogenol, and Milabu. This research used a quantitative exploratory method with collecting data on the number of male fruit fly imago trapped and harvested. The treatment for each type of attractant was repeated four times so that there were 12 bottles of traps in total. The harvest of fruit flies is carried out every day and counted manually using a hand counter. This data obtained were then tabulated and analyzed with ANOVA at the level significant of 5%. If there is a significant difference, then a further test is carried out with the Least Significance Different (LSD) test. The identification results showed that the Ferokop attractant had the highest attractiveness, at 337.38 catches per day, followed by the Petrogenol brand with 225.52 catches, and finally the Milabu brand with 83.05 catches. The conclusion is that the three types of attractant brands have different abilities in attracting male fruit flies.

PENGARUH PEMBERIAN DOLOMIT DAN PUPUK KANDANG SAPI TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN KEDELAI (Glycine max (L.) Merr) DI TANAH ULTISOL

This research was conducted at the ATC Experimental Garden, Faculty of Agriculture, Sriwijaya University, Indralaya, Ogan Ilir Regency, and began in September 2019 until February 2020. The analyzes of soil and plant have been carried out at the Laboratory of Chemistry, Biology, and Soil Fertility, Soil Department, Faculty of Agriculture, Sriwijaya University, Indralaya. This study aims at determining the effect of dolomite and cow manure on the growth and production of soybean (Glycine max (L.) Merr) in Ultisol Soil. This study used a factorial randomized block design with 2 treatment factors and 3 replications. The first factor is dolomite CaMg (CO3)2 consisting of two levels, 5 tons ha-1 and 10 tons ha-1. The second treatment factor is cow manure consisting of three levels, namely without manure, 10 tons ha-1, and 20 tons ha-1. The results indicated that interaction the giving of dolomite and cow manure had a significant effect in increasing soil pH, and plant N uptake. The giving of dolomite 10 tons ha-1 significantly affected the weight of 100 seeds and soybean production The giving of cow manure 20 tons ha-1 had a very significant effect on plant height, total number of pods, and the number of filled pods of soybean in Ultisols.

PERUBAHAN STATUS HARA NITROGEN PADA AIR GAMBUT DAN GAMBUT BEKAS TERBAKAR AKIBAT PERBEDAAN MUKA AIR

The burned peat in the farmland, Kalampangan Village have changed quite dramatically, such the water level is inundated during the rainy season and very dry during the drought season. Such conditions could be affecting the process of decomposition and chemical properties of peat and peat water associated with the availability of nutrients, especially nitrogen. This study aims to determine how the effect of water levels on the status of N in the burned ombrogenic peat in the Kalampangan Village. This research was uses a method of incubation as long as 40 days with the hanging column with the differences of water levels are 0, -10, -20, -30, 10, 20, and 30 cm. Parameter chemical properties of peat and peat, namely pH, total N, organic C, ammonium, ammonia, nitrite and nitrate. Analysis of data of the chemical properties of peat and peat water was done by using ANOVA level of 5% and 1%, then also regression and correlation analysis. The results have showed that there was no significant effect on the chemical properties of water and peat due to the changes in water level. Incubated peats have a very acidic pH with a high positive correlation at drying and a low positive correlation at inundation, while the peat water was indicates a perfect positive correlation at drying and high negative correlation at inundation. Peat showed a high total N with a low positive correlation at drying and a perfect negative correlation at inundation, while the peat water was indicates a perfect positive correlation at drying and a high negative correlation at inundation. Ammonification and nitrification processes were occurring that indicated by the accumulation of NH4 + and NO3 in peat and peat NO3 dissolved in water, where were the results of the regression analysis contained pattern polynomial equations and linear patterns. The equation can be used to predict the concentrations of all three parameters due to the changes in peat water level in Central Kalimantan

EVALUASI SIFAT KIMIA TANAH MENURUT JARAK DARI SUNGAI DI DAERAH PASANG SURUT KECAMATAN KOTA BESI, KOTAWARINGIN TIMUR, KALIMANTAN TENGAH

ABSTRACTThis study aims to determine the effect of the location distance from the river bank and the depth ofsoil layer to the soil chemical properties in the tidal land area. The study was conducted in April untilJune 2016 in the tidal areas of Bajarum village, District of Kota Besi, East Kotawaringin, CentralBorneo Province. The study used survey methods and soil sampling in the field, analysis of soilsamples in the laboratory and continued with analysis and description of data. Soil sampling wasconducted at distances of 250, 500, 750, 1.000, 1.250 and 1.500 meters from the Mentaya river bankat two depth soil layers (0 - 25 cm and 25 - 50 cm). The soil chemistry properties analyzed includedpH, cation exchange capacity (CEC), base saturation, organic C, N total, total P2O5, total K2O,alumunium and hydrogen exchangeable and soil fertility status. The results of study showed that: (1)The further distance of soil from the position of Mentaya river bank there is an increase of organic C,total P2O5, total N, total K2O, pH, CEC, base saturation and soil fertility status, on the contraryshowed a decrease in alumunium and hydrogen exchangeable. The limiting factor of soil fertility ismainly the low base saturation, besides that at some point observation also due to low CEC, totalP2O5 and total K2O. (2) Sub soil layer (25 - 50) cm has a higher pH and base saturation valuescompared to topsoil layer (0 - 25) cm. In contrast, topsoil layer has CEC, alumunium and hydrogenexchangeable, total P2O5, total K2O, total N and organic C values higher than sub soil layer.Keywords: distance from river, tidal soil, soil chemical properties.

KEHILANGAN NITROGEN PADA SISTEM USAHATANI JAGUNG MANIS DI LAHAN GAMBUT KALIMANTAN TENGAH (Nitrogen Lost on Sweet Corn Of Peatland Farming System in Central Kalimantan)

ABSTRACTApplication of fertilizer can increase nitrogen loss in agricultural land in the form of leaching andvolatilization. Research carried out on peat soil, done two times planting. First in the dry season totransition with nitrogen input from urea fertilizer, cow dung manure and from rainfall. Both areimplemented in the month of transition to the rainy season with nutrient input from nitrogen derivedfrom pearl NPK fertilizer, chicken manure and rainfall. Nitrogen washing is obtained frompercolation water which is accommodated by lysimeter. The volume of percolation water measuredat plant age 15, 30, 45 HST and at harvest, N content in laboratory analysis. The purpose of thisresearch is to know total nitrogen loss and efficiency level of sweet corn farming system inpeatland. Nitrogen washing in the first study was 2.28 kg N ha-1 or 2.49% and in the second studywas 8.95 kg N ha-1 or 13.65%. The other estimated loss of volatilization in the first study was 12.80Kg N ha-1 or 13.97% and in the second study it was 6.76 Kg N ha-1 or 10.31%. Average lossestimated volatilization of 9.78 kg N ha-1 or 12.45% Total nitrogen loss of 19.60%, so that sweetcorn farming system on peatlands in Kalampangan Urban Palangkaraya is classified as inefficientKeywords: Nitrogen, Sweet Corn, Peat Land