Jurnal Ilmu-Ilmu Pertanian Indonesia

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ISSN : 14110067
Total articles ≅ 48
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Daniel Malintang Siagian, Bilman Wilman Simanihuruk, Herry Gusmara
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 27-31; doi:10.31186/jipi.21.1.27-31

Abstract:[TIME OF GRANTING PALM OIL AND NPK DOSAGE IN GROWTH AND RESULTS OF SWEET CORN (Zea mays saccharata Sturt.) IN ULTISOL]. The objectives of this study were to obtain timing of sludge, NPK dosage and best interaction between NPK fertilizer and timing of sludge for growth and yield of sweet corn. The study was conducted from June to September 2017 at Jl. Al-Hikmah Mosque, Kandang Limun Village, Muara Bangkahulu Subdistrict, Bengkulu City with Ultisol soil type and altitude of 15 m above sea level. The study was arranged in Split Plot Design with two treatment factors and three replications. The first factor as the main plot was the time of giving of sludge 0, 2, and 4 weeks before planting, second factor as subplot was the application of each NPK dosage consisting of 3 treatment levels: 150 kg/ha, 225 kg/ha, and 300 kg/ha. The timing of sludge and NPK doses gave no significant effect on the growth and yield of sweet corn. The timing of sludge two weeks before planting gives better results on the number of leaves. NPK was giving no significant effect on all observed variables.
Ariya Listari, Supanjani Supanjani, Sumardi Sumardi, Widodo Widodo, Djamilah Djamilah
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 44-48; doi:10.31186/jipi.21.1.44-48

Abstract:[THE EFFECT OF GOAT MANURES AND NPK 16:16:16 FERTILIZER ON THE GROWTH OF SEEDLESS GUAVA CROPS AND QUALITY OF ITS FRUIT (Psidium guajava L) AT RAINY SEASONS OF INDONESIA]. Guava var. Crystal, known as seedless guava, is one of the most popular guava in Indonesia. Compated to other guavas, seedless guava has softer texture, tastes sweeter, and has less seeds. This experiment was carried out from September 2017 to February 2018 at Harapan Makmur village, Pondok Kubang regency, and Central Bengkulu district. The objective of this experiment was to evaluate the effect of goat manures and NPK 16:16:16 fertilizers on the growth of guava crops and the quality of its fruits. The experiment was arranged in randomized complete block design (2 factors, 5 replications). The first factor tested was the dose of goat manures, consisting of 3 levels: 0, 9, and 18 kg/plant. The second factor tested was the dose of NPK 16:16:16 fertilizers, consisting of 3 levels: 0, 0,25, and 0.5 kg/plant. The results showed that goat manures significantly affected the diameter and number of branches. In addition, the dose of NPK significantly affected the diameter of branches, degree of leaf greenness, number of flower, and number of aborted flowers. Finally, the interaction between goat manures and NPK manures did not significantly affect all variables measured, except for leaf areas.
Sumardi Sumardi, M. Chozin, Hermansyah Hermansyah
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 49-54; doi:10.31186/jipi.21.1.49-54

Abstract:[GROWTH AND YIELD OF F4 SWAMP RICE LINES ON LINE SWAMP]. Growth and yield of swamp rice are depending on the plant ability to adapt in swampy agro-ecosystem which characterized by several limiting factors. This study was addressed to evaluate the growth and yield characteristics of six lines of swamp rice bred for the development of high-yielding rice varieties best suited for swamp land production. Evaluation was conducted in a pot experiment using UBPR2, UBPR3,UBPR6, UBPR7, UBPR9, and UBPR10 as planting materials. These lines were the F4 generation derived from crosses involving local Bengkulu swamp rice varieties. Observations were made on 13 plant characteristics, dry matter accumulation, leaf area ratio, specific leaf weight, net assimilation rate, plant height, productive tiller number, heading date, maturity date, panicle length, grain number per panicle, percent of filled grain, and plant yield (the grain weight per clump). The collected data were subjected to analysis of variance and least significant difference test at 5% level. Results indicated that all lines physiologically exhibited similar growth patterns, excepting the capability of accumulating dry matter at 40 dap. In this case, UBPR6 produced the highest dry matter accumulation (24.34 g). Based on the morphological performances, significant variations among the lines were observed on most of the observed characteristics, except on productive tiller number and panicle length UBPR10 was the line produced the tallest plant stature (160.72 cm), UBPR2 was the earliest flowering and maturing line (76,33 and 111 dap), whereas UBPR6 was the line produced the highest grain number per panicle (212,2), percent of filled grain (95%), and plant yield (82.50 g per clump).
Eky Santo, Djamilah Djamilah, Entang Inoriah
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 1-8; doi:10.31186/jipi.21.1.1-8

Abstract:[THE EFFECTIVENESS Jatropha curcas (L.) LEAF EXTRACTS IN INHIBIT ROOT-KNOT NEMATODE (Meloidogyne spp.) INJURIES ON TOMATO]. One of the main problems in tomato cultivation is the attack of root purse nematodes (Meloidogyne spp.). Some methods of controlling Meloidogyne spp. which can be done including using plants as vegetable nematicides. This study aims to get the concentration of Jatropha leaf extract which is effective in inhibiting the Meloidogyne spp attack on tomato plants. This study used 48 plants, 24 plants for observation 35 days after planting and 24 plants for observation until the age of 77 days after planting. This study used a Completely Randomized Design (CRD) with the treatment of Jatropha leaf extract concentrations (0%, 10%, 20%, 30%, 40%, 50%), and repeated four times. The results showed Jatropha curcas extract in inhibiting the attack of root purse nematodes (Meloidogyne spp.) can maintain plant height, fruit number, fruit weight, and plant stover wet weight 35 days after planting, but no significant effect on stover wet weight plants 77 days after planting and dry weight of plant stover 35 days after planting and 77 days after planting. The concentration of Jatropha leaf extract tends to increase the concentration, the smaller the rate of infection and the population of Meloidogyne spp on tomato plants. The concentration of Jatropha leaf extract 35% - 45% is the optimum concentration in inhibiting Meloidogyne spp. on tomato plants.
Azis Febrianto, Hermansyah Hermansyah, Faiz Barchia
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 22-26; doi:10.31186/jipi.21.1.22-26

Abstract:[GROWTH OF DRAGON FRUIT (Hylocereus constaricensis) STEM CUTTINGS AS AFFECTED BY CONCENTRATIONS AND DIPPING TIMES OF COCONUT WATER]. Dragon fruits (Hylocereus constaricensis) is commonly propagated vegetatively by using stem cutting. In this respect the use of natural plant growth regulator, such as coconut water, to promote the growth of the cuttings is very important. The objectives of this experiment were to evaluate water coconut concentration, dipping time of stem cutting in the coconut water, and the combination of both to promote the growth of dragon fruit cuttings. The experiment was arranged in Randomized Complete Block Design (2 factors, 5 replications). The first factor was the concentration of coconut water, consisting of 5 levels: 20, 40, 60, 80, and 100%. The second factor was dipping time of cutting in the coconut water, consisting of 4 levels: 2, 4, 6, and 8 minutes. The results showed that the increasing coconut water concentration had increased the shoot growth in a liner fashion. A similar trend was also observed for coconut water dipping time. The highest shoot growth was found on 60 % coconut water.
Kusmea Dinata, Taufik Hidayat
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 9-14; doi:10.31186/jipi.21.1.9-14

Abstract:[PERFORMANCE OF SCAB DISEASES ATTACKS IN ORANGE KALAMANSI AND ITS EFFECT ON THE QUALITY OF FRUIT] The need for fresh orange kalamansi raw materials is increasing along with the market demand for syrup. Pests and diseases are one of the obstacles in fulfilling this, namely the attack of citrus scabies. This study was to study the development of scurvy attacks and their effects on the quality of Kalamansi citrus fruits. The research was carried out by observation method in the Kalamansi orange orchard and in the postharvest laboratory. Data from observations and measurements were analyzed by descriptive statistics and analysis of variants (ANOVA) to see the effect of scurvy attacks on the physical and chemical quality of Kalamansi oranges. The results showed that scurvy began to attack the fruitset phase. The intensity of the disease attack at the beginning of the observation reached 11.06% and increased to 58.18% with an average rate of attack intensity of 14.54%. The attack of scurvy has a significant effect on the physical and chemical quality of the fruit, namely fruit weight, fruit diameter, juice volume and dissolved solids levels.
Nanik Setyowati
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 15-21; doi:10.31186/jipi.21.1.15-21

Abstract:[EFFECT OF WEED COMPOST AND SYNTHETIC FERTILIZER DOSAGE ON TOMATO GROWTH AND YIELD (Lycopersicum esculentum Mill.)]. The growth and yield of tomato plants are influenced by fertilizer and nutrient content in the soil. This study aims to investigate the effect of a combination of synthetic fertilizer and weed compost on the growth and yield of tomato plants. The study was conducted in November 2016 through June 2017 in Agronomy, Faculty of Agriculture, University of Bengkulu, at an altitude of ± 10 m above sea level using a Completely Randomized Design (CRD). The treatments consisted of synthetic fertilizer at a rate of 180 kg/ha N, 150 kg/ha P2O5 and 100 kg/ha K2O (control), grass compost 30 , 40 and 50 tons/ha, 50% control + grass compost 15 tons/ha, 50% control + 20 tons/ha grass compost and 50% control + 25 tons/ha grass compost. The results revealed that the vegetative growth of tomato plants fertilized with grass compost 30 tons/ha and a combination of grass compost + 50% control did not differ from control treatment. Tomato yield fertilized with grass compost 30 tons/ha and a combination of 50% control + 15 tons/ha grass compost was higher than the control treatment. Therefore, 15 tons/ha of grass compost can reduce the dose of synthetic fertilizer by 50%.
Abimanyu Dipo Nusantara, Yudhy Harini Bertham, Ahmad Junedi, Hesti Pujiwati, Hartal Hartal
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 37-43; doi:10.31186/jipi.21.1.37-43

Abstract:[UTILIZATION OF MICROBE TO INCREASE GROWTH AND YIELDS OF SOYBEAN IN COASTAL LAND. This study aims to obtain the right combination of varieties and biofertilizers to increase soybean productivity on Bengkulu coastal land. The research was conducted from March to July 2017, located in Beringin Raya Village, Muara Bangkahulu Sub-District, Bengkulu. The study was conducted with a split-plot design which was repeated three times. The main plot is two soybean varieties (Grobogan and Wilis). The subplots are two types of biological fertilizers, arbuscular mycorrhizal fungi, and phosphate solvent fungi. The results showed that the results of the seed weight of the Grobogan variety (equivalent to 3.38 tons/ha) were significantly higher than the Wilis variety (equivalent to 2.72 tons/ha). However, the Wilis variety showed an increase in seed weight (equivalent to 1.12 tons/ha) higher than the Grobogan variety (equivalent to 0.61 tons/ha) according to the description of each variety. The combination of arbuscular mycorrhizal fungi and phosphate solvent fungi showed superior performance than arbuscular mycorrhizal fungi fertilizer or phosphate solvent fungi. The interaction of Grobogan varieties with a combination of arbuscular mycorrhizal fungi and phosphate solvent fungi produced the highest seed weight (equivalent to 3.52 tons/ha) which was statistically similar to the interaction of Grobogan varieties and arbuscular mycorrhizal fungi (equivalent to 3.45 tons/ha). The economics of resources using arbuscular mycorrhizal fungi are not required to be combined with phosphate solvent fungi.
Lia Resti Utami, Yulian Yulian, Bambang Sulistyo
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 32-36; doi:10.31186/jipi.21.1.32-36

Abstract:[VEGETATIVE GROWTH OF GRAFTING SEEDLINGS OF GERGA ORANGE IN DIFFERENT CONCENTRATIONS OF LIQUID ORGANIC FERTILIZER]. This study aims to examine explain the effect of gamal leaf liquid organic fertilizer dosage, the way of application of gamal leaf liquid organic fertilizer, and the interaction between treatments on the growth of citrus plants. This research was conducted from August to December 2017 at the Greenhouse of the Faculty of Agriculture, University of Bengkulu. This research was carried out using a Randomized Complete Block Design using 2 factors. The first factor is the way the application of gamal leaf liquid organic fertilizer is sprayed on the leaves and watered onto the ground. The second factor is the concentration of gamal leaf liquid organic fertilizer which consists of control, 25%, 50%, 75% and 100%. The results showed that application of liquid organic fertilizer only gave effect to the number of branches. The 50% gamal leaf liquid organic fertilizer concentration was able to increase the number of branches of gerga orange seedlings by an average of 1.04 branches.
Minal Faizin, Nadrawati Nadrawati, Edhi Turmudi
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 21, pp 55-61; doi:10.31186/jipi.21.1.55-61

Abstract:[THE INCIDENCE OF POD-BORER, Maruca testulalis Geyer (Lepidoptera: Pyralidae) IN EIGHT MUNG BEAN VARIETIES (Vigna radiata L.) AND ITS EFFECT ON YIELD]. Mung beans are an essential food crop in Indonesia, whose production is still increasing to meet domestic needs. However, the high attack of plant pests Maruca testulalis Geyer (Lepidoptera: Pyralidae) is one of the leading causes of the low production of green beans. The use of superior varieties is one solution to controlling these pests. This study was conducted to test seven superior varieties of green beans, namely Vima 1, Vima 2, Vima 3, Murai, Kenari, Kutilang and Seriti and one local variety against M. testulalis. The study used a completely randomized block design and was repeated three times. The results showed that the mungbean varieties Vima 1, Vima 2, and Vima 3 had M. testulalis attack with the lowest level of seed damage in sequence, namely 5.84%, 7.94%, and 6.39%. Even though the percentage of pod borers attack did not significantly affect the growth of all Balitkabi superior varieties and one local variety of mungbean planted, the Kutilang variety was the highest yield with seed yield rates that were as low as other low-attack varieties.