Journal of Applied Plant Technology

Strategies to Uphold Food Sovereignty In Indonesia

Sadarestuwati Sadarestuwati, Dwi Retna Suryaningsih, Dwi Haryanta — Thu, 30 Nov 2023 00:00:00 +0000

The principle of food sovereignty is a democratized system of food, transparent, environment-based, local products and markets as the main pillars in achieving sustainable food security. Food sovereignty makes a very real contribution to overcoming food insecurity in areas where there are frequent extreme climates, crop failures, dependence on imported food, and encouraging the provision of long-term healthy food (sustainable) that is accessible to all communities (equitable) and encourages local food production and consumption (local wisdom). Food sovereignty seeks to improve the quality of life of farmers and rural communities. Strategies to build food sovereignty can be through (a) Utilization of biodiversity as a sustainable source of food through diversification of local food, (b) Improvement of agricultural cultivation and quality of food production through research and innovation produced by BRIN, (c) Consistency in the implementation of protection of productive agricultural lands from land use conversion, (d) Support for monetary, fiscal policies and access to finance for farmers, fishermen, and other food producers, (e) Improving the technology of processing/downstreaming food commodities in a productive, efficient, competitive, and sustainable manner, (f) Development of infrastructure and food production facilities appropriately and integrated, (g) Synergy of food development policies between the central and regional governments, and (h) Implementation of import duties on food imports to protect domestic food commodities and products.

Application of Organic Fertilizer Pellets from Egg Shell Waste in Spinach (Amaranthus hybridus L)

Dwi Haryanta, Venia Venia, Tatuk Tojibatus Saadah — Thu, 30 Nov 2023 00:00:00 +0000

Egg shells are household waste that is very easy to find. Egg shells or egg shells can also come from waste disposal of laying hens. So far, there is a lot of egg shell waste by martabak sellers in Surabaya. The lack of public knowledge and insight regarding the use of eggshell waste causes this waste to pollute the environment. This study aims to determine the interaction between the application of organic fertilizer eggshell waste pellets and the dose of urea fertilizer used and its effect on the growth and yield of spinach plants. This research was conducted from mey to june 2022 at the Experimental Garden of the Faculty of Agriculture, Wijaya Kusuma University, Surabaya. This experiment was carried out using a randomized block design consisting of two treatment factors, namely POPe of eggshell waste (P) and dose of urea (K). This treatment was repeated three times with P0 (without POPe treatment), POPe treatment of eggshell waste consisting of P1 (9 gr POPe), P2 (18 gr POPe), P3 (27 gr POPe) and K0 (without urea dose), dose urea K1 fertilization (3.2 gr urea). The results showed that the use of POPe and urea on spinach plants had no significant effect on any observed parameters.

The Mathematical Model of Relationship Between Population of Pod Sucking Bug Nezara viridula L. and Soybean Pod Damage

Achmadi Susilo — Thu, 30 Nov 2023 00:00:00 +0000

The aims of this research are: (1) to predict the damage of soybean pod through the mathematical model of relationship between population density of N. viridula and pod damage, (2) to predict the soybean yield through the mathematical model of relationship between population density of N. viridula and pod damage where made by modification of Reynolds Transport Theorem. This research was used Completely Randomized Design with nine treatments and each was replicated three times. The treatment were : P0 = control, P1 = 1 nymph, P2 = 2 nymphs, P3 = 3 nymphs, P4 = 4 nymphs, P5 = 1 adult, P6 = 2 adults, P7 = 3 adults, and P8 = 4 adults. The population density of pod sucking bug was the independent variable, while dependent variables were : rate of pod damage, and dry pod weigh. Analysis of mathematical modeling was made by approaching of Continuum Theory and Reynolds Transport Theorem. The results showed that : (1) Relationship between population of N. viridula and pod damages in the form of mathematical model which is used to predict the soybean pod damage has error 0,02 – 0,10%, and (2) Mathematical model where made by modification of Reynolds Transport Theorem which is used to predict the soybean yield has error 0,01 – 1,00%.

Nutrient Content of Lettuce Plants in a Hydroponic System with the Addition of Acid Solution

Ratna Zulfarosda, Retno Tri Purnamasari, Vita Fibriani — Thu, 30 Nov 2023 00:00:00 +0000

Hydroponics is a plant cultivation technique that uses water as a growing medium. The acidity level (pH) of water is an important factor in the success of hydroponic plant cultivation. High water acidity (pH>8) can be controlled by adding acid solution to a pH level of 5.8-7.0. This research was conducted to examine the nutrient content of lettuce. The research used a Randomized Block Design with 9 treatments (3 types of water and 3 types of acid solution). The types of water used include Kebonsari well water, Bugul Kidul well water and Pasuruan city PDAM water. The acid solutions used include nitric acid, phosphoric acid and sulfuric acid. The results of the research show that adding acid solutions to all types of water produces different plant nutrient contents. The addition of nitric acid and phosphoric acid solutions respectively had a significant effect on the N and P nutrient content of lettuce plants. The addition of phosphate solution can be recommended as a pH lowering solution in hydroponic cultivation.

Effect of Different Doses of Liquid Organic Fertilizer on the Growth of Lettuce Plants (Lactuca sativa L.)

Haidar Fari Aditya, Fina Dwi Permatasari — Thu, 30 Nov 2023 00:00:00 +0000

Fertilization activities also provide macro and micro-nutrients for plants such as nitrogen, phosphorus, and potassium. The role of the three elements is very important and have mutually supporting functions in plant growth and development. This research aims to observe the effect of different doses of liquid organic fertilizer on the growth of lettuce plants. So, we can provide the best advice for fertilizing lettuce plants. Providing liquid organic fertilizer to 20 lettuce plants using 3 doses mixed with 1000 ml of water for each dose, including: (1) 5 ml dose of liquid organic fertilizer + 1000 ml water for five plants, (2) 10 ml dose of liquid organic fertilizer + 1000 ml of water for five plants, (3) Dose of 15 ml of liquid organic fertilizer + 1000 ml of water for five plants, and (4) Use of control on five plants that were not given POC. The results of the research showed that the effect of giving each dose of liquid organic fertilizer, namely 5 ml, 10 ml and 15 ml, showed the highest growth results, namely at a dose of 15 ml and the lowest was obtained in the treatment without liquid organic fertilizer (control).

Growth and Yield of Meranti Tomatoes (Lycopercium pipinelifoliu) Effect of Chrysanthemum Flower Waste Organic Fertilizer (Chrysanthemum morifolium) and Mutiara NPK Anorganic

Retno Tri Purnamasari, Fajar Hidayanto, Dina Rismanita — Thu, 30 Nov 2023 00:00:00 +0000

The purpose of this study was to obtain the right dose of organic fertilizer combination of chrysanthemum flower waste and NPK Mutiara inorganic fertilizer to support the growth and efficiency of nutrient absorption levels of tomato meranti plants. The method used in this study was a complete randomized design (RAK) with 4 treatments and each treatment was repeated 6 time. The treatment made is P0: 500 kg ha-1 NPK Mutiara (100% NPK); P1: Dose of Organic Fertilizer Chrysanthemum Waste 15 Tons ha-1 + 25 % NPK; P2: Dose of Organic Fertilizer Chrysanthemum Waste 10 Tons ha-1 + 50 % NPK; P3: Dose of Organic Fertilizer Chrysanthemum Waste 5 Tons ha-1 + 75 % NPK. With observation parameters, namely plant height, number of leaves, leaf area, dry weight of upper plants, dry weight of lower plants, total dry weight of plants, leaf area index, net assimilation rate, and plant growth rate. The results showed that with the addition of organic matter of chrysanthemum waste fertilizer combined with NPK inorganic fertilizer was able to support the growth of meranti tomato plants in the vegetative phase of plants with a combined dose of chrysanthemum fertilizer 5 tons Ha-1 + 75% NPK showed the best results on plant height parameters, number of leaves and dry weight of plants.

Growth Test of Pakchoy (Brassica rapa L) Against Abiotic Stress from the Heavy Metal Pb

Surya Ari Widya, Sergio Helios, Ristani Widya Inti, Damasa Ines Larissa — Thu, 30 Nov 2023 00:00:00 +0000

The pakchoy plant also faces various challenges in its growth environment, including exposure to abiotic stressors. Heavy metals, such as lead (Pb), are environmental contaminants that can have significant negative impacts on plants. Therefore, this research aims to investigate the resilience of pakchoy plants (Brassica rapa L.) to concentrations of abiotic stress from the heavy metal Pb. This is achieved through a series of experiments to understand the effects of exposure to the heavy metal Pb on growth and to analyze the accumulation of heavy metals in pakchoy plants. Pakchoy plants (Brassica rapa L.) can grow under conditions of heavy metal Pb stress; however, as the concentration of Pb increases, the growth of the plants becomes progressively slower. This is evidenced by a reduction in height, leaf number, plant biomass, and the accumulation of heavy metal Pb in the plant tissues. Consequently, these plants are categorized as phytoremediators due to their ability to accumulate heavy metal Pb.

Relative Advantages of Public Parks in Landscape Design Perspective in Ten Cities of East Java Province

Dwie Retna Suryaningsih, Mochamad Thohiron, Marsela Nova — Thu, 30 Nov 2023 00:00:00 +0000

One way to determine the relative advantages of public parks is to carry out a landscape design perspective. This research aims to determine the influence of landscape elements and principles in public parks; to find out the application of landscape design elements in public parks; to find out the usefulness of applying landscape principles to public parks. This research was carried out in 10 Regency Cities in East Java, each with 3 public parks, so there are thirty public parks starting from March 2022 to August 2022. This research was carried out using quantitative and qualitative methods where all data was obtained in the form of results direct observation in the field through questionnaires. The data used in this research is research on landscape performance, the elements and principles of landscape design are the research object. The observed variables include 36 variables. The research took 30 respondents to be interviewed or fill out a questionnaire. The research results show that Sidoarjo Square, Malang Square, Ngegong Park, Apkasi Park, Obor Park, Trembesi Park and Bungkul Park occupy quadrant one. Meanwhile, Gersik Square, Batu Square, Batu City Green Park, Pasuruan City Park, Elderly Park, Ngronggo Park, Safari Park 2, Sekartaji Park and Tanjung Puri Park occupy the second quadrant. The parks that occupy quadrant 3 are Prambanan Gersik, Candra Wilwatikta Park, Kehati Park and Pelangi Park. Quadrant 4 consists of Pancasila Fort Park, Gapura Park, Kendedes Park and Mojokerto Square.