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Published By Lembaga Penelitian Dan Pengabdian Kepada Masyarakat Universitas Lampung

2745-7737, 0216-7662
Updated Thursday, 04 November 2021

2021 ◽  
Vol 20 (2) ◽  
pp. 139
Author(s):  
Rugayah . ◽  
Agus Karyanto ◽  
Ermawati . ◽  
Dewi Suselawati

Mangosteen (Garcinia mangostana L) seeds from seed, or commonly called seedling, have relatively few lateral roots and are poor in root hairs so that their growth is slow (having a long juvenile period of up to 10-15 years). For this reason, it is necessary to make efforts so that mangosteen seedlings can have a good root system through the addition of natural growth regulators. The purpose of this study was to determine the effect of red onion extract, a mixture of onion extract and mung bean sprouts combined with biological liquid fertilizer on the growth of mangosteen seedling. This research was carried out in the Horticulture FP greenhouse in March 2020–July 2020. This study was arranged in a factorial (3 x 2) in a Randomized Block Design (RAK) with three replications. The first factor was natural ZPT treatment: without extract, red onion extract 400 g/L, and mixed extract of onion 200 g/L and green bean sprouts 200 g/L. The second factor is the provision of biological fertilizers, namely without biological fertilizers and 15 ml/L). The results showed that the administration of mixed extracts of shallots and mung bean sprouts tended to have better growth which could be seen from the highest average value for the variable plant height 6.04 cm, stem diameter 2.93 mm, and the number of secondary roots. The mixed extract treatment of shallots and mung bean sprouts also increased the widest leaf area by a difference of 3.5 cm² compared to the control. Keywords :  extract of shallot/ green bean sprout, growth regulator, mangosteen


2021 ◽  
Vol 20 (2) ◽  
pp. 129
Author(s):  
Nova Anggraini ◽  
Rusdi Evizal ◽  
Liska Mutiara Septiana

Wild pepper of Piper colubrinum Link is used as rootstocks for grafted black pepper (Piper nigrum/Piper colubrinum) because its resistance to fungi that cause root rot disease. Grafted black pepper nurseries and plantations began to be developed by farmers in Lampung. This research aims to study the growth characteristics of wild pepper and grafted black pepper plants. The research was conducted in the field of wild pepper and grafted black pepper owned by farmers in Air Kubang Village, Air Naningan District, Tanggamus, Lampung, using survey method. Plant samples were determined randomly in the fields. The results showed that: (1) Wild pepper plants starts at the age of 1 year form plagiotropic branches with small diameters every 1-2 orthotropic branches, but slowly form orthotropic branches; (2) After the second pruning (of harvesting cuttings) 22% of the plants form orthotropic branches. The yield of pepper cuttings from the first to third harvests increased by 21-25% compared to the previous yield. In the third harvest, the production of cuttings reached 5066 cuttings (2 nodes) per 400 m2 land area or equivalent to 126,650 cuttings per ha of land harvested every 2 months; (3) At the age of 18 months, compared to non-grafted, grafted black pepper showed a greater greeness leaf index, larger stem diameter, larger plagiotropic branch diameter, higher number of orthotropic and plagiotropic branches, and 15.6% of grafted black pepper plants were flowering. Key words : Black pepper, cutting, flowering, growth, grafting, Piper colubrinum


2021 ◽  
Vol 20 (2) ◽  
pp. 110
Author(s):  
Kus Hendarto ◽  
Setyo Widagdo ◽  
Sri Ramadiana ◽  
Fitria Sita Meliana

Shallots (Allium ascalonicum L.) is one of the leading vegetable commodities used as food seasoning and traditional medicine. This study aims to see the effect of providing various doses of NPK fertilizer and types of biological fertilizers on the growth and production of shallot plants. This study used a randomized block design (RAK) arranged in a factorial (4 x 2). The first factor is the NPK fertilizer dosage which consists of four levels, namely: N0= 0% (without NPK fertilizer), N1= 50% (25 g/m2), N2= 100% (50 g/m2), and N3= 150% (75 g/m2). The second factor is the type of biological fertilizer which consists of two levels, namely: H1= Grikulan plus fertilizer and H2= EM4. The results showed that the NPK fertilizer dosage treatment up to a dose of 75g/m2 gave the best results on plant growth and development, including the number of leaves, plant height, fresh tuber weight per plant, wind dry tuber weight per plant, and wind dry tuber weight per m2. The growth and development of shallot plants with the application of Grikulan biological fertilizers were better than those of EM4 biological fertilizers. Treatment of NPK fertilizer dosage of 150% or equivalent to 75 g / m2 supplemented with the application of Grikulan plus fertilizer results in higher production, namely the weight of dry tubers per m2 reaching 1674.33 g or equivalent to 11.72 tonnes/ha. Keywords : EM4, Grikulan plus, shallots,NPK, yield


2021 ◽  
Vol 20 (2) ◽  
pp. 120
Author(s):  
Nabila Lutfiah ◽  
Agustiansyah . ◽  
Paul B. Timotiwu

The need of soybeans continuously increases due to the increasing of human population. The germination of soybeans seeds in the acid soil such as ultisol soil often experienced barrier. One of the ways to improve seed germination in the acid soils is to give priming treatment on the seeds. The research was conducted in the green house of the Integrated Field Laboratory, Faculty of Agriculture, the University of Lampung. It was conducted from December 2020 to March 2021. The research used factorial treatment that was applied in the Completely Random Design with three replicates. The Tukey’s Honestly Significance Difference with 5% level of significance was used to compare the average of treaments. Data analyzing was done by using R studio statistics program. The first factor  was kinds of priming which consisted of without priming as a controle, water priming within 12 hours, KNO3 1% within 3 hours, KNO3 2% within 6 hours, GA3 50 ppm within 14 hours, GA3 100 ppm within 14 hours, and PEG 7,5% within 24 hours. The second factor was three soybean seed varieties, i.e. Anjasmoro, Burangrang, and Grobogan. Results showed that Giberelin priming of 50 ppm for 14 hours was the best priming in seedling emergence in the ultisol soils. The Burangrang soybean seeds showed the best T50% and the number of radicles appeared in the first day. The Anjasmoro soybean seeds showed the best response in the dry weight of normal seedling and hypocotyls lenght of normal seedling in the ultisol soils.Key Words: Priming, soybean, ultisol, variety


2021 ◽  
Vol 20 (2) ◽  
pp. 68
Author(s):  
Dedy Prasetyo ◽  
Rusdi Evizal

Conventional agricultural practices are very intensively utilizing synthetic agrochemicals. The resulting impact is a decrease in soil quality, thereby reducing fertilizer efficiency and plant yield. Efforts to maintain soil health include restoring organic matter. Organic fertilizers can be produced by utilizing the surrounding agricultural waste. Liquid organic fertilizer (LOF) can be produced from organic waste which should be chosen from high content of macro nutient. The quality of LOF could be increased by adding commercial decomposer starter or local microorganism. Organic matter of high energy should be added as well. The process of making liquid organic fertilizer is involved a fermentation process. Microbes will decompose organic material by breaking down the nutrients in the material to dissolve in solution. POC applications have been tested on various agricultural commodities. The provision of POC can increase the growth and yield of plants. In addition, the use of POC can improve soil health. Keywords : fermentation, fruit, industry, microbe, LOF, pulp, quality, vegetable, waste


2021 ◽  
Vol 20 (2) ◽  
pp. 81
Author(s):  
Kus Hendarto ◽  
Yohanes Cipta Ginting ◽  
Agus Karyanto ◽  
Virginia Chintya Amanda

This study aims to determine the effect of NPK dosage, types of complementary fertilizers and their interactions on the growth and production of chilies pepper.  This research was conducted in Sukabanjar Village, Gedong Tataan, Pesawaran Regency from July-December 2020.  The experimental design used in this study was a two-factor randomized block design (RBD), namely the dose of NPK fertilizer and the type of complementary fertilizer (4 × 2) with 3 replications.  Each plot consisted of 8 plants so that there were 192 plants.  The first factor was NPK Mutiara fertilizer dose (16:16:16)(N) with N0:0 g/plant, N1:10 g/plant, N2:20 g/plant and N3:30 g/plant.  The second factor is the type of complementary fertilizer (P) with P1 Plant Catalyst and P2 Gandasil D. Homogeneity of variance was tested by Bartlett test, additivity was tested by Tukey test. Then it was continued with analysist of variance and with the Least Significant Difference test (LSD) at the 5% level. Treatment of NPK fertilizer dosage significantly increases growth and yield.  The interaction between the NPK dosage of 20g/plant and type of complementary fertilizers gave highest plant height (95.58 cm). The best  combination was NPK dosage of 20 g/plant and Plant Catalyst fertilizer that gave highest yield (753,17 g/plant equivalent 15.06 ton/ha at population 20,000 plant/ha.Keywords : Chili pepper, complimentary fertilizer, growth, NPK, yield


2021 ◽  
Vol 20 (2) ◽  
pp. 93
Author(s):  
Dad Resiworo Jekti Sembodo ◽  
Nana Ratna Wati

The purpose of this study was to determine the effectiveness of mixing herbicides with the active ingredients atrazine and topramezone in controlling weeds and to determine the nature of the mixture of the two active ingredients. This research was conducted in a plastic house in Natar District, South Lampung Regency from October 2020 - January 2021. The study was arranged in a Completely Randomized Design (CRD). The treatments consisted of three types of herbicides with six dosage levels of the active ingredients, namely the single herbicide Atrazine 300 g/l (0, 37.5, 75, 150, 300, and 600 g ai ha-1), Topramezon 10 g/l (0. 1.25 , 2.5, 5, 10, and 20 g ai ha-1), and the herbicide mixture of Atrazine 300 g/l + Topramezone 10 g/l (0. 38.75, 77.50, 155, 310, and 620 g ai ha-1) , and repeated 6 times. The target weeds included broadleaf weeds (Ageratum conyzoides and Synedrella nodiflora), grass groups (Digitaria ciliaris, Echinochloa colonum, and Eleusine indica), and the puzzle group (Cyperus iria). The herbicides atrazine and topramezone have different ways of working so that the analytical method used is the Multiplicative Survival Model (MSM) method. The results showed that mixing the herbicide Atrazine 300 g/l + Topramezon 10 g/l had an expected LD50 value of 46.28 g ai ha-1 and a treatment LD50 of 27.22 g ai ha-1 with a co-toxicity value of 1.7 (Co-toxicity > 1) so that it is synergistic.Key words: Atrazin, Topramezon, mixing herbicide, Multiplicative Survival Model, weed, LD50


2021 ◽  
Vol 20 (2) ◽  
pp. 104
Author(s):  
Hidayat Pujisiswanto ◽  
Yayuk Nurmiaty ◽  
Nanik Sriyani ◽  
Annisa Efrima

Adjuvant is an ingredient added in a formulation to increase the effectiveness of lerak fruit in inhibiting weeds. This study aims to determine the type of adjuvant in lerak fruit extract that can increase the inhibition of germination of Fimbristylis miliacea and to determine the type of adjuvant in lerak fruit extract that is most effective in inhibiting the germination of F. miliacea. The research was conducted from December 2019 to March 2020 in the Weed Laboratory, Faculty of Agriculture, University of Lampung. This study used a Completely Randomized Design (CRD) to determine the type of adjuvant given to lerak fruit extract on F. miliacea germination with 4 replications. The treatments consisted of lerak fruit extract, lerak fruit extract + VCO adjuvant, lerak fruit extract + KAO adjuvant, lerak fruit extract + Polysorbate 80 adjuvant, and control. The Bartlett test was used to test the homogeneity of variance, if the assumptions of the analysis of variance were met, then the mean value of the treatment was continued with the Least Significant Difference (LSD) test at the 5% level. The results showed that adjuvants and without adjuvants added to lerak fruit extract at a concentration of 50% (500 g/l) were able to suppress the percentage of germination and the speed of germination of Fimbristylis miliace seeds.Keywords: adjuvants, lerak fruit extract, Fimbristylis miliacea, weed


2020 ◽  
Vol 19 (2) ◽  
pp. 102
Author(s):  
Fitri Yelli ◽  
Hanisah Hanisah ◽  
Rusdi Evizal ◽  
Sugiatno Sugiatno

Coffee husk is the main waste of coffee bean production using a dry processing system. Coffee husk is returned to the coffee plantation as mulch, or used as a mixture for nursery media and for making bio-charcoal. This study aims to determine the effect of the formulation of biochar, coffee husk, and soil on the growth of Arabica coffee seedlings. The experiment used a randomized block design (RBD) consisting of 6 treatments with 4 replications. The treatments were the composition of the ratio of biochar: coffee husk: soil (v / v / v), namely: 0: 1: 2 (control, without biochar), 1: 1: 2, 1: 0: 2 (without coffee skin), 2: 1: 2, 1: 2: 2, and 1: 1: 1. The coffee husk biochar is made by a slow burning system in a stack. The results showed that: (1) The treatment of biochar composition, coffee husk and soil had an effect on the number of leaves, length x leaf width, crown dry weight, fresh weight quality index, and dry weight quality index; (2) biochar mixing treatment did not increase seedling growth. Mixing biochar with a composition of 1: 1: 2 reduces root growth; (3) the composition of biochar, coffee husk and soil 1: 1: 2 gave better seedling growth than the composition 0: 1: 2 (control without biochar) based on the quality index of fresh seedling and dry seedling.Keywords: Arabica, biochar, coffee husk, growth, seedling, quality indeces


2020 ◽  
Vol 19 (2) ◽  
pp. 110
Author(s):  
Fembriarti Erry Prasmatiwi ◽  
Rusdi Evizal

North Lampung Regency is the main producer of Lampung black pepper, which is generally in the form of a poly-culture system of pepper cultivation. This study aims to study the performance and productivity of the pepper plant which is intercropped with coffee by farmers in North Lampung. This study used a survey method and conducted in North Lampung by taking 2 samples of the sub-districts purposively, namely Abung Barat and Abung Tengah. From each district, 2 villages were selected purposively. Primary data were collected by interviewing 93 sample farmers who were randomly sampled. To deepen the performance of planting, visits and observations of farmers' fields were conducted. The results of this study concluded that: (1) 96% of farmers applied a poly-culture pepper plantation system. Intercropping pepper plantations have a lower pepper plant population but the presence of intercropping can cause land use efficiency to increase by up to 30%;(2) The poly-culture pepper fields  are managed less intensively as indicated by the low fertilizer dosage and the high mortality rate of pepper, which reaches 7-10% of plants per year; (3) The productivity of this intercropping system is pepper yield (conversion of SPH 1600 trees / ha) reaching 230-260 kg / ha or based on factual population reaching 155-267 kg/ha, coffee yield 166-221 kg/ha, and yield of Pithecellobium jiringa 24 -28 kg/tree; (4) According to farmers' perceptions, the main constraints faced by farmers (80.2% of farmers) were the attack of pepper foot rot disease, low prices for pepper, and high mortality of pepper trees. However, most farmers (88.9% of farmers) said they would not replace pepper with other crops.Keywords: Black pepper, coffee, Pithecellobium jiringa, poly-culture, yield


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