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INDONESIA
jurnal Ilmu Pertanian (Agricultural Science)
Published by Universitas Gadjah Mada
ISSN : 01264214     EISSN : 25277162     DOI : https://doi.org/10.22146/ipas
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Ilmu Pertanian (Agricultural Science) with registered number ISSN 0126-4214 (print) ISSN 2527-7162 (online) is a scientific open access journal published by Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI (Perhimpunan Sarjana Pertanian Indonesia). Ilmu Pertanian (Agricultural Science) provides a forum for the publication of scientific articles in the scope of agricultural sciences with priority on science and plant technology (plantation, horticulture, and forestry), including aspects of postharvest and socioeconomic. Ilmu Pertanian (Agricultural Science) is published three times annually, April, August, and December.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 539 Documents
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Effects of Urease Inhibitor and Nitrification Inhibitor on the Nitrogen Losses, Physiological Activity, and Oil Palm Yield on Red-Yellow Podzolic Melisa Melisa; Eka Tarwaca Susila Putra; Eko Hanudin
Jurnal Ilmu Pertanian Vol 3, No 3 (2018): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.37291

Abstract

Nitrogen (N) fertilizer efficiency can increase by adding N-(n-butyl) thiophosphoric triamide (NBPT) and N-(n-propyl) thiophosphoric triamide (NPPT) as urease inhibitor in urea fertilizer and adding 3,4-dimethyl pyrazole phosphate (DMPP) as nitrification inhibitor in ammonium sulfate (ZA) fertilizer. The research objectives were to examine the effectiveness of urease inhibitor (NBPT and NPPT) and nitrification inhibitor (DMPP) on the physiological activity and oil palm yield on red-yellow podzolic. Field experiment was done using a Randomized Complete Block Design (RCBD) of single factor and three replications as block. The single factor was nine fertilization treatments of urea with or without urease inhibitor, and ZA with or without nitrification inhibitor. The use of urease inhibitors decreases the amount of volatilization and N loss fertilizer. The higher dose of broadcasting N fertilizer (on the same type of fertilizer) resulted in the higher amount of N loss and volatilization. All fertilization treatments did not have any significant influence to the width and the length of opening stomata, nitrate reductase activity (NRA), N concentration in oil palm leaf, Oil Extraction Rate (OER), and Free Fatty Acid (FFA). Meanwhile, The oil palms at yellow red podzolic applied with urea 195 kg/ha combined with 0.12% of NBPT-NPPT resulting in higher fresh fruit bunch productivity.
Biochemical Changes of Three Cocoa Clones (Theobroma cacao L.) Under Drought Stress Fakhrusy Zakariyya; Didik Indradewa
Jurnal Ilmu Pertanian Vol 3, No 2 (2018): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.37495

Abstract

Drought stress is a serious threat for cocoa production. One of the plant mechanisms to survive from the drought stress is through producing some biochemical compounds. The objective of this research was to know biochemical changes in three cocoa clones during drought stress. The research was conducted at the green house of Indonesian Coffee and Cocoa Research Institute from January – December 2017. The experiment was designed by using Randomized Complete Block Design (RCBD) with 2 factors and with 3 replications. The first factor was clones of scion that consisting KW 641, Sulawesi 1 and ICS 60 which each of its grafted to Scavina 6 clone as rootstock. The second factor was watering intervals which consisting; every 2 days / regularly watering (adequate of water), every 5 days (moderate drought), and every 8 days (severe drought). The result of this research showed that drought stress decreased chlorophyll content, increased hydrogen peroxide content (ROS), increased the activity of superoxide dismutation (SOD), increased ascorbic acid content, increased total phenolic content, and increased proline content. Sulawesi 1 and KW 641 clones showed lower hydrogen peroxide (ROS) content, while chlorophyll content, SOD activity, total phenolic content, ascorbic acid content, and proline content were higher compared with ICS 60 clone. It showed that Sulawesi 1 and KW 641 clones had more drought-resistance compared with ICS 60 clone.
Effect of seedling age on growth and yield of two rice (Oryza sativa L.) varieties transplanted in Saline Coastal Area of Baros, Yogyakarta Riza Afrinda; Budiastuti Kurniasih
Jurnal Ilmu Pertanian Vol 6, No 1 (2021): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.38107

Abstract

Marginal land along the coast should be utilized to increase the national rice production. In addition, the use of saline resistant varieties, it is necessary to determine the best seedling age for saline soil. This study aimed to evaluate the growth and yield responses of two rice varieties transplanted at different seedling age on saline soil. The experiment was arranged in a factorial Randomized Completely Block Design (RCBD) with three replications, conducted at saline coastal area of Baros, Yogyakarta, starting from January to June 2017. The first factor was rice varieties, consisting of Dendang and IR-64. Meanwhile, the second factor was the seedling age, consisting of 2 and 4 weeks after sowing (WAS) seedlings. The results showed that the growth and yield of two rice varieties (Dendang and IR-64) showed significant difference, and Dendang showed a better performance than IR-64. The higher yield of Dendang compared to IR-64 was supported by higher plant growth (shoot dry weight) and yield components (number of seeds per panicle, seed weight per plot, and productivity). The 2 and 4 WAS seedlings did not give significantly different effects on nearly all growth variables. However, 2 WAS Dendang rice seedlings had higher shoot dry weight. Meanwhile, IR-64 had higher leaf greenness in 4 WAS seedlings compared to that in 2 WAS seedlings.
Growth and Yield of Inpari 29 Rice Varieties on Raised-bed and Different Depths of Sunken-bed in Saline Field Nasrudin Nasrudin; Budiastuti Kurniasih
Jurnal Ilmu Pertanian Vol 3, No 3 (2018): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.38736

Abstract

Increased productivity of rice is required to meet the increasing food demand. Utilization of marginal lands, such as saline land is one of the solutions applicable to increase rice production. The objective of this study was to determine the growth and yield of Inpari 29 rice variety planted on raised-bed and different depths of sunken-bed in saline field. This study used the Split Plot Design with two treatments. The depth as the main plot consisted of two depth levels: a depth of 50 cm and a depth of 25; and the planting area field as the subplot that consisted of two levels: raised-bed and sunken-bed. The treatment was repeated three times. The rice planted in sunken-bed showed higher growth than in raised-bed as indicated by the high content of chlorophyll a, chlorophyll b, total chlorophyll, nitrate reductase activity and plant height. The rice planted in the sunken-bed yielded higher than in raised-bed as indicated by higher harvest index and the weight of grain per clump. Rice planted in 25 cm depth showed higher nitrate reductase activity and grain weight per clump than in 50 cm depth.
Frost Hazard Assessment on Agricultural Land to Achieve Resilient Agriculture in Dieng Volcanic Highland, Central Java Aditya Pradana; Aida Mardiana; Fathimah Nur Lestari; Futuha Helen Sara; Sani Afifah; Emilya Nurjani
Jurnal Ilmu Pertanian Vol 3, No 1 (2018): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.39620

Abstract

Dieng Volcanic Highland is one of the most intensive potato agricultural land in Indonesia, as well as frost disaster prone area. Frost indicated by appearance of frozen dew on the ground or vegetation surface due to cold temperatures during dry season. Frost causes damage to leaf tissue in potato plants, resulting crop failure and losses of up to tens of millions. Disaster management needs to be assess in order to achieve Disaster Risk Reduction (DRR) on agricultural land. This research aims to identify frost hazard areas based on local physical characteristics, analyze frost impacts on agricultural land, and provide preparedness recommendation to reduce the impact of frost disasters in Dieng Volcanic Highland. Research was conducted in Dieng Village, Wonosobo and Dieng Kulon Village, Banjarnegara. Method to assess hazard level was performed by spatial mapping technology using ArcGIS and comprehensive analysis using frost assessment through combinations of geomorphology, land use, proximity to water bodies and weather aspects. Dieng Volcanic Highland has a 125.59 hectare frost hazard areas, as many as 58.4 hectares of hazard areas are dominated by high level, while 24.84 hectares are moderate level and 42.95 hectares are low level. Cropland dominated by potato commodity has the highest hazard level, frost incident causing agricultural commodities to wither to death so that farmers experience losses. Frost losses in Dieng have a range from 800 thousand rupiah to over 155 million rupiah and only destructive on potato farm. In order to encourage agricultural resilience and reduce the loss of frost disasters, effort of preparedness can be done by passively and actively methods. Passive methods includes site selection, early warning system, shifting commodities, cropland modification, and appropriate calendar planting. Active methods includes frost modification using heaters, blower and sprinkle irrigation, and cropland covering using mulch, plastic or nets.
The Effect of Priming Duration with Salicylic Acid under Salinity Stress on Growth and Leaf Anatomy of Sweet Corn (Zea mays L.) Krisnanda Surya Dharma; Maryani Maryani
Jurnal Ilmu Pertanian Vol 3, No 1 (2018): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.39621

Abstract

Salinity stress is known for adverse effect on plants. Priming with salicylic acid was able to improve plant performance under salinity stress. This study aimed to determine the effect of priming duration with salicylic acid on growth, leaf anatomy and the optimal priming duration for sweet corn seedlings (Zea mays L.) under salinity stress. The experiment was based on Completely Randomized Design with two factors and five replications. The first factor was priming duration with salicylic acid (2 mM) with four different durations (0, 12, 18 and 24 h). The second factor was the level of salinity (NaCl 0% and 3%). Parameters observed were germination percentage, plant height, root length, fresh weight, dry weight, chlorophyll content, leaf proline content, leaf anatomy and stomatal density. Data were analyzed with t-test, ANOVA and followed by Duncan’s test at 95% confidence level. The results showed that 18-h priming duration observed as the highest germination percentage which was 7% higher than control.  Priming for 24 h showed phytotoxic effect for sweet corn on the germination phase by reducing the percentage of germination. The application of salicylic acid mitigated the toxic effects of NaCl stress on maize seedlings and considerably improved root and shoot growth, photosynthetic pigments, fresh weight, dry weight, proline content, and stomatal density, as well as could maintaining the leaf anatomy. The optimal priming duration with salicylic acid for sweet corn seedlings under 3 % salinity was 18 h.
The Growth, Production, and Quality of Shallot at Inland Quartz Sands (Quarzipsamments) in the off Season Anang Firmansyah; Andy Bhermana
Jurnal Ilmu Pertanian Vol 4, No 3 (2019): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.39676

Abstract

The development of shallot cultivation at back quartz sand during rainy or off season  can be considered as new innovation. The objectives of this study is to obtain shallot varieties that are adaptive in terms of the growth, production, and quality parameters. The research was conducted during off season in Palangkaraya. The experimental design used in this research is randomized block design (RBD) 4x3 with 4 treatments of varieties (Maja Cipanas, Tajuk, Bauji and Bima Brebes), and 3 replication for each treatment. The results showed that soil bulk density increased with the deepening of the soil, however soil water content decreased. Based on growth parameter, Tajuk showed the best results and significantly different comparing to Bima Brebes, with plant height consecutively 46.88 cm and 39.52 cm, number of leaves 70.7 and 35.27  and number of shoot 13.43 and 6.60. For production parameter, the weight of varieties of Maja Cipanas, Bauji dan Bima Brebes is 10 grams more than Tajuk with weight is 6,97 grams only. The produstion of Tajuk is low and not significantly different from Bima Brebes, with production is respectively 15.28 ton/ha and 13.31 ton/ha, while the varieties of Bauji showed the highest dry production of 22.4 ton/ha although it is not significantly different with Maja Cipanas that can produce 18.49 ton/ha. For quality parameter,  the varieties of Bima Brebes showed the optimum results in terms of parameter of hardness of tubers and total dissolved solids (TDS) with the value of 4.9 kg /cm2 and 16,42 % respectively.
Response of Morphological and Physiological Characteristics of 4 Flood- tolerant Sugarcane (Saccharum Officinarum L.) Cultivars to ZA (Zwavelzuur Ammoniac) fertilizer application in Jember and Bondowoso Sholeh Avivi; Cacuk Purnomo; Ayu Puspita Arum; Sugeng Winarso; Sri Hartatik
Jurnal Ilmu Pertanian Vol 4, No 2 (2019): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.40173

Abstract

The business expansion of sugarcane can be done using marginal land, such as wet land. This study attempted to get the right doses of ZA fertilizer applied to several sugarcane cultivars, which are tolerant to flooding in two different locations. The research was carried out in Jubung Agrotechnopark garden,  University of Jember and seed gardens of Dewisri Bondowoso, from November 2015 to November 2016. The experiment was arranged in factorial randomized complete block design. The first factor was the doses of ZA fertilizer, consisting of 3 levels of treatment, i.e. 0 kg.ha-1 (without ZA fertilizer), 500 kg.ha-1 and 1000 kg.ha-1. The second factor was 4 sugarcane cultivars,  consisting of flood-tolerant sugarcane cultivars from 2014 screening result, i.e. PSJT 941, Bulu Lawang, PS 865 and Kidang Kencana. The results showed that the application of ZA fertilizer at 1000 kg.ha-1 affected the height of stems, the number of tillers, diameter of the stem and the number of segments. Meanwhile, the application of ZA fertilizer at 500 kg.ha-1 affected the number of leaves, fresh weight of shoots, dry weight of shoots, fresh weight of roots, dry weight of roots, brix content, and the content of sucrose and reducing sugar. Flood-tolerant sugarcane cultivars are shown by the highest brix and sucrose fertilizer, observed in  PS 865, Bulu Lawang, PSJT 941, and Kidang Kencana, sequentially. The highest content of reducing sugar was found in PSJT 941, PS 865, Kidang Kencana, and Bulu Lawang, successively.
Growth and Yield Characters of Two Cashew (Anacardium occidentale L.) Cultivars at Different Ages in Baubau City, South-East Sulawesi Province Aliyaman Aliyaman; Didik Indradewa
Jurnal Ilmu Pertanian Vol 4, No 1 (2019): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.40216

Abstract

Baubau City is one of the cashew (Anarcadium occidentale L.) producer area in Southeast Sulawesi with area of 820 ha. This large area of cashew cultivation was not compensated with the productivity caused of low production. An effort to overcome this problem is identifying the growth and yield characters of cashew to apply the good agricultural practices for cashew plantation. The objective of this research was to determine the growth and yield of two cashew varieties at different tree ages; and to identify the relationship between the characters and the productivity of cashew trees in Baubau City. This research was arranged by oversite design with 2 varieties (the cashew with red pseudo-fruit and the cashew with yellow pseudo-fruit), 4 ages of cashew plant (5 years old, 17 years old, 26 years old, 37 years old) and 5 replications. The results showed that both varieties had no significantly different on growth and yield characters. At 37 years old, cashew trees still demonstrated the increasing of the productivity due to the increasing of growth and yield component i.e. plant biomass, the number of flower, the number of cashew nut per plant and cashew nut weight per kernel.
CIE L*a*b* Color Space Based Vegetation Indices Derived from Unmanned Aerial Vehicle Captured Images for Chlorophyll and Nitrogen Content Estimation of Tea (Camellia sinensis L. Kuntze) Leaves Wahono Wahono; Didik Indradewa; Bambang Hendro Sunarminto; Eko Haryono; Djoko Prajitno
Jurnal Ilmu Pertanian Vol 4, No 1 (2019): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.40693

Abstract

A lot of digital image techniques to assess crop agronomic character have been developed.  Most of those techniques are based on non-visible light equiped cameras, such as infared wavelengths. This research was aimed to examine the use of commercial digital camera with sensor range in visible light spectrum using CIE L*a*b* color space to estimate chlorophyll and nitrogen content of tea leaf.  Data was collected from an experiment of nitrogen dossage levels on 3 years after prunning tea crops.  The result shows that Lb* Difference Simple Index (LI), a*b* Difference Simple Index (AI), and  a* Vegetation Index (VIA) can be used to estimate tea leaf chlorophyll and nitrogen content.  The relationship between VIA and tea leaf nitrogen content was defined on linear equation y = 1.8382x2 - 0.3099x + 3.0658 with determinant coefficient R² = 0.71.

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