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INDONESIA
Jurnal Ilmu Pertanian
Published by Universitas Gadjah Mada
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol 5, No 1 (2020): April" : 7 Documents clear
Effect of saline irrigation method on the growth of rice (Oryza sativa L.) Adlian Adlian; Budiastuti Kurniasih; Didik Indradewa
Jurnal Ilmu Pertanian Vol 5, No 1 (2020): 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.24892

Abstract

A field experiment was carried out to study rice growth under salinity stress in permanently flooded, intermittent, and saturated soil conditions. The experiment was conducted at field station of Faculty of Agriculture, Universitas Gadjah Mada located in Bantengan village, Banguntapan, Bantul, DIY, from August to November 2015. The treatments were arranged in a split-plot randomized complete block design, consisting of three irrigation methods as the main plot and two levels of salinity as the subplot, thereby resulting in six treatment combinations with three replications within each combination treatment. The three irrigation methods were permanent irrigation (flooded soil), intermittent irrigation (wet/dry soil), and irrigation above field capacity (saturated soil). The two levels of salinity were fresh water as control treatment (EC  0.3 dS.m-1) and saline water (EC  5 dS.m-1). The results of the experiment showed that there was no significant interaction effect of irrigation method and salinity on all observed rice growth variables. Salt stress negatively affected the rice growth, including plant height, plant dry weight, leaf area, and leaf area ratio (LAR). Irrigation method significantly affected plant dry weight and number of tillers at 3 and 9 weeks after planting. Permanent irrigation resulted in the highest plant growth compared to intermittent irrigation and above field capacity condition.
Effect of humic acid on the growth and yield of two maize (Zea mays L.) cultivars on andisol Tangguh Prakoso; Endang Sulistyaningsih; Benito Heru Purwanto
Jurnal Ilmu Pertanian Vol 5, No 1 (2020): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (43.008 KB) | DOI: 10.22146/ipas.36935

Abstract

One way to improve maize (Zea mays L.) production is through land extension using Andisol land. However, Andisol soil has phosphate (P) fixation problem due to the high amorphous material. Hence, the use of organic material in the form of humic acid that has greater affinity to amorphous minerals is recommended to solve the problem. This research was conducted in February-May 2017 at Tri Dharma field of Faculty of Agriculture, Universitas Gadjah Mada. The Andisol land used has a low available P category from Datar, West Java and Wonosobo, Central Java. This research was arranged in a Randomized Complete Block Design (RCBD), consisting of two factors. The first factor was maize cultivar (Bisi-2 and Pioneer-35). The second factor was the doses of humic acid, consisting of control treatment (without fertilizer and humic acid), NPK without humic acid, and NPK + humic acid at 5%, 10%, and 15%. The percentage of humic acid given, based on the amount of NPK 16:16:16 fertilizer, was 350 kg.ha-1. Fertilization was applied three times 100 kg.ha-1 on 1 WAP, 150 kg.ha-1 at 3 WAP and 100 kg ha-1 at 7 WAP. The results is, humic acid treatment had the same effect with NPK fertilization treatment only and control on P available Andisol soil. Humic acid, also has the same effect with NPK fertilizer treatment in increasing the yield component of 100 seeds weight, dry weight of seeds, harvest index, length of cobs and productivity.
Review: Challenges and opportunities of implementing mass productivity scale (MPS) at date farms in Malaysia Asmaddy Haris; Aimi Fadzirul Kamarubahrin; Siti Nurazira Mohd Daud; Zurina Kefeli @ Zulkefli; Nursilah Ahmad; Nurul Aini Muhamed; Syadiyah Abdul Shukor
Jurnal Ilmu Pertanian Vol 5, No 1 (2020): 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.40982

Abstract

The study aimed to review the challenges and opportunities of mass productivity scale (MPS) for the dates (Phoenix dactylifera L.) farm in Malaysia. The review on site and document was done to drill the issues faced by dates palm farmers. The common issues affecting dates farm in Malaysia were pest attack, import permit, lack of expertise, and climate and soil requirements. In a united response, the government should form the National Dates Palm Centre (NDPC) which will explore opportunities to address issues faced by the dates palm sector in Malaysia.
Effect of salted fish waste and cow manure on NPK availability and uptake of lowland rice on peat soil in Pelalawan Riau Dian Syafitri Ompusunggu; Benito Heru Purwanto; Cahyo Wulandari; Sri Nuryani Hidayah Utami
Jurnal Ilmu Pertanian Vol 5, No 1 (2020): 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.47281

Abstract

The low yield of rice in thick peat can be overcome by provisioning complete nutrients. Various efforts have been made to increase the productivity of Indonesian peatlands, one of which is by adding salted fish waste and cow manure. This research was carried out on a plastic house scale from October 2017 to January 15, 2018, in Pelalawan District, Pelalawan Regency, Riau. This research was arranged in a Completely Randomized Design (CRD), consisting of eight treatments, namely L0 = Control, L1 = 1.5 ton.ha-1 of fish waste, L2 = 2.25 ton.ha-1 of fish waste, L3 = 7 tons/ha of cow manure, L4 = 15 ton.ha-1 of cow manure, L5 = 1.5 ton.ha-1 of fish waste + 7 ton.ha-1 of cow manure, L6 = 1.5 ton.ha-1 of fish waste + 15 ton.ha-1 of cow manure, L7 = 2. 25 ton.ha-1 of fish waste + 7 ton.ha-1 of cow manure, and L8 = 2.25 ton.ha-1 of fish waste + 15 ton.ha-1 of cow manure. The results showed that the application of cow manure and salted fish waste could increase soil pH, total NPK, and NPK uptake. The application of 2.25 tons/ha of fish waste and 15 tons/ha of cow manure resulted the best results in soil pH, total NPK, and NPK uptake, therefore it is recommended for the cultivation of lowland rice on peat soil.
The development of smart screening technology kit (SST-Kit) for sorting cassava cultivars based on cyanide analysis Luluil Maknun; Noerma Juli Azhari; Mike Nur Izzati; Rizal Nur Huda; Abdul Malik Bahrudin; Erliana Ginting; Hermin Sulistyarti
Jurnal Ilmu Pertanian Vol 5, No 1 (2020): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3758.284 KB) | DOI: 10.22146/ipas.11512

Abstract

Cyanides are deadly toxic substances commonly found in cassava root tuber. Higher content of cyanides causes bitter taste of the root tuber. Therefore, analysis of cyanide content has been used as one of criteria for bitterness in cassava. The substitute common method used for this purpose was organoleptic test that could lead to poisoning, or argentometry, which is complicated, time-consuming, and requires lots of reagents. Therefore, a fast, easy, and safe method is strongly demanded. In this work, a smart screening technology kit (SST-Kit) was developed using ninhydrin reagent. This simple, fast, and low-cost method can be applied in the field for the analysis of cyanide levels in cassava. This method was optimized to the concentration of sodium carbonate from 0.5 to 2.0% by measuring the red color intensity produced under various times of reading from 1 to 3 minutes and three sample preparation techniques. The optimum condition for SST-Kit to read the cyanides level was achieved under the condition of 0.5% of sodium carbonate with a time readout of 2 minutes, using grinding preparation technique followed by dilution. The SST-kit had been applied on cassava samples with the accuracy of more than 90%.
The role of iron oxidizing bacteria to the quality of leachate on acid sulphate soil Khairatun Napisah; Azwar Maas; Sri Nuryani Hidayah Utami; Wahida Annisa Yusuf
Jurnal Ilmu Pertanian Vol 5, No 1 (2020): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (695.571 KB) | DOI: 10.22146/ipas.34731

Abstract

The problem encountered in acid sulphate soil is the presence of pyrite (FeS2) which causes soil  to have highly acid reaction when the pyrite is oxidized. The decline in quality not only occurs on the soil  but also on the quality of the surrounding waters. One way to improve the quality of the leachate is by draining it through biofilter plants in the form of purun tikus (Eleocharis dulcis) and bulu babi (Eleocharis retroflaxa) which can absorb or neutralize these elements. The purpose of this research was to know the inoculant influence of iron oxidizing bacteria to leachate quality in acid sulphate soil. The research was conducted on a pot scale in greenhouse. The research was in randomized block design (RBD) of 3-factors with 3 replications. The first factor was inoculants, the second factor was water management, and the third one was phytoremediation material (Eleocharis dulcis  and Eleocharis retroflaxa). The results showed that the plant height in the inoculant treatment+wood charcoal was in the range of 89.33−95.33 cm, while that in the inoculant treatment+husk charcoal was in the range of 89.50­­­−93.00 cm. Meanwhile, the yield of rice with bacteria oxidizing iron inoculant+wood charcoal was higher, which was at 6.77 ton.ha-1 than inoculant treatment of oxidizing iron+husk charcoal which was only 5.95 ton.ha-1. 
Histochemistry of backcross 1 of oil palm seeds at different storage periods Ernayunita Ernayunita; Taryono Taryono; Prapto Yudono
Jurnal Ilmu Pertanian Vol 5, No 1 (2020): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6377.449 KB) | DOI: 10.22146/ipas.51776

Abstract

Oil palm backcross 1 is the result of the crossing between Elaeis oleifera and Elaeis guineensis, followed by backcrossing to one of its parents. It has several advantages, including slow height growth and good oil quality, thereby having the potential to be developed. However, it also has a short seed shelf life, which might be inherited from E. oleifera that has relatively quick seed deterioration. This is problem to the breeding program, and there have not been many studies on the seed deterioration process. A histological examination can determine the composition of food reserves in seed endosperm tissue. Therefore, it is necessary to assess the histochemistry of seeds concerning the process of seed deterioration. Histochemical tests with Sudan III, Milon, and IKI reagents were used as histochemical tests of fat, protein and carbohydrate seed content with different seed storage periods, i.e. 4, 3, 2, and less than 1 year. The result showed that the fat content decreased during the storage periods. Based on carbohydrates and proteins staining, there were only very few substances , which were difficult to distinguish among the storage periods, so that this analysis could not be used as the determining indicator of seed deterioration. The fat content was a determining factor of seed deterioration and quality. The oil palm seed storage up to 3-4 years led to the reduction in the fat content in significant quantities compared to the fresh seeds stored less than 1 year as they still contained a lot of fat in the cell.

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