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Haris Setyaningrum
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Gontor AGROTECH Science Journal
Published by Universitas Darussalam Gontor
ISSN : 2460495X     EISSN : 24775800     DOI : -
Core Subject : Education, Agriculture,
Agriculture, Biological Sciences & Forestry Education
Gontor AGROTECH Science Journal (GASJ) is a sciencetific journal published biannual (june and december), covered but not limited issues in agronomy, integrated farming, sutainable agriculture, plant cultivation, soil science, plant protection, pest and diseases. GASJ published research article, short notes, review papers or review concept in above mentioned subjects
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Articles 5 Documents
 1 
Search results for , issue "Vol 2, No 2 (2016): December 2016 (suplement)" : 5 Documents clear
Effectiveness Of Fertilizers Inorganic Micro Green Supe C On Tomato Wahyu Handayati
Gontor AGROTECH Science Journal Vol 2, No 2 (2016): December 2016 (suplement)
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v2i2.729

Abstract

One component of farming technologies that play a role in efforts to increase the production of tomato plants is fertilization. Green Supe C leaf fertilizer containing some essential micronutrients that may increase the productivity of tomato plants. In this regard an experiment was conducted at Experimental Garden Karangploso BPTP East Java, from July to October 2015. The purpose of the study was to determine the effectiveness of micro fertilizer Green Supe C on growth, yield and economic feasibility on tomato plants. Experiments using a randomized block design with 9 treatments and 3 replications. As the treatment : A. Control (without inorganic fertilizer), B. Standard fertilizer 75 % (112.5 kg urea + 112.5 kg SP-36 + 75 kg KCl + 450 kg NPK Ponska), C. Standard fertilizer 75 % (112.5 kg urea + 112.5 kg SP-36 + 75 kg KCl + 450 kg NPK Ponska + 2 cc Green Supe C), D. Standard fertilizer 75 % (112.5 kg urea + 112.5 kg SP-36 + 75 kg KCl + 450 kg NPK Ponska + 4 cc Green Supe C), E. Standard fertilizer 75 % (112.5 kg urea + 112.5 kg SP-36 + 75 kg KCl + 450 kg NPK Ponska + 6 cc Green Supe C), F.Standard fertilizer 100 % (150 kg urea + 150 kg SP-36 + 100 kg KCl + 600 kg NPK Ponska), G. Standard fertilizer 100 % (150 kg urea + 150 kg SP-36 + 100 kg KCl + 600 kg NPK Ponska + 2 cc Green Supe C), H. Standard fertilizer 100 % (150 kg urea + 150 kg SP-36 + 100 kg KCl + 600 kg NPK Ponska + 4 cc Green Supe C) dan I. Standard fertilizer 100 % (150 kg urea + 150 kg SP-36 + 100 kg KCl + 600 kg NPK Ponska + 6 cc Green Supe C). The study showed that the application of the micronutrient fertilizer Green Supe C can improve plant growth and crop yields compared to controls and standards without micro fertilizer. Applications Green Supe C at 6 cc / l in the standard fertilizer treatment (treatment I) gives the yield 41.94 t / ha that higher 4.90% than without micronutrient fertilizer (40.94 tons/ha). Farming using Green Supe C has a greater profit especially at doses of 6 cc/l standard (treatment I) with B/C ratio about 1.74 that compared to control and standard fertilizers i.e. 1.16 and 1.62. In financial terms, although there are additional costs for the purchase of fertilizer micronutrient Green Supe C aboutRp 136.000, but an increase in revenue up toRp 5.744.000
Effect of P nature phosphate dosage and embedding time of Azolla mycrophylla Kaulfuss on Yield of Rice (Oryza sativa L.) Mahmudah Hamawi; Husni Thamrin Sebayang; Setyono Yudo Tyasmoro
Gontor AGROTECH Science Journal Vol 2, No 2 (2016): December 2016 (suplement)
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v2i2.731

Abstract

The effort of growing azolla in intercroping rice will be hoped to supply a green manure for rice plants. Additing P of the phosphat rock in the field can be expected to increase the result of rice yield.The research was conducted on December 2, 2006 to April 5, 2007 at Tegalgondo Karangploso of Malang. onsidering those problems, the researcher employs the factorial group randome desigh that compose two factor by controlling as comparison tool (inorganic treatment). The first factor is P in the phosphat rock contained 4 stages. As followed Po (without P), P1 (25 kg P ha-1), P2 (50 kg P ha-1), P3 (25 kg P ha-1). The second factor is time of incorporated Azolla microphylla Kaulfuss (W), which consist 4 stage. As followed W1 (incorporated 1 day before transplanting rice), W2 (50 % the azolla biomass in the field was incorporated during 14, 28, and 42 days after transplanting rice), W3 (50 % the azolla biomass in the field was incorporated during 21, and 49 days after transplanting rice), W4 (50 % the azolla biomass in the field was incorporated during 35 days after transplanting rice). The research was replicated 3 replications. The research finding showed that phosphat rock with 25 kg of P ha-1 doses combinationed with time of incorporating the azolla biomass at 14, 28 and 42 days after transplanting rice, the result of rice would be increasing in 31,4 % and R/C value resulted 1,47. Giving phosphat rock with 25 – 75 kg P ha-1 doses increased the azolla biomass at 146,4 % until 153 % and increased the yield of rice at 21,1% until 43,8 %.
Study of Bokashi’s Type and Dosages to Growth and Harvest Yield Honey Dews (Cucumis Melo L.) In Low Land Ana Amiroh
Gontor AGROTECH Science Journal Vol 2, No 2 (2016): December 2016 (suplement)
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v2i2.732

Abstract

Recently, most cultivation and planting of Melon (Cucumis melo L.) by farmers using inorganic fertilizers with an excessive dosage, and this causes the lowland productivity decrease with consequent. The soil organic matter decreased as low as time increasing. Application and using of mature organic matter are an alternative to solve these problems in order the lowland become more conducive and productive for growth of melon. But increasing pests and diseases attaching to the plants may caused by adding immature organic matters into soil. Sources to make bokashi like as paddy straw and water hyacinth is immense but it’s not yet used. This research was aimed to study, know and usage of paddy straw and water hyacinth bokashi’s on melon growing at lowland. Experiment was conducted at Lowland Experiment Station of Agricultural Faculty, Brawijaya, in Jatikerto Village, Kromengan Distric, Malang, from April-June 2015. Experiment was applied in a Randomized Block Design (RBD) with double factors Types and Dosages of Bokashis. There is seven combinations of treatment with three replications, each treatment consisted four individual plants. Result showed there is significant difference between types and dosages of bokashi on plant length at 28, 35, 42 dan 49 days after planting (d,a,p) respectively. The significant difference between treatment also shown by leaf area at 28 - 49 (d.a.p.). Application of paddy straw bokashi was better than hyacinth bokashi on melon growth. The best yield shows that by using paddy straw bokashi with 5 ton/ha of dosage gives melon with 2,56 kg /plant fresh weight.
Distribution Pattern of Rice (Oryza sativa L.) Roots Under Different Timing and Duration of Water Deficit Alfu Laila; Sriyanto Waluyo
Gontor AGROTECH Science Journal Vol 2, No 2 (2016): December 2016 (suplement)
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v2i2.733

Abstract

In Indonesia, Rice (Oryza sativa L.) is the most important food crop. In rice cultivated areas, there is a major problem of water deficit. The objective of this study was to investigate the effects of different timings and durations of drought stress on root distribution patterns of rice. The experiment was conducted in Greenhouse at Faculty of Agriculture, Gadjah Mada University, Yogyakarta. A rice genotype IR64 was used in the experiment. Drought stress was imposed for 0 (well-watered treatment), 7, 14 and 21 days by withholding watering at vegetative phase, reproductive phase and generative phase. The result showed that the root’s response was depends on the timing plant growth stages. Under drought stress condition during vegetative growth stage resulted inhibition of root growth and reduced root dry weight. In contrast, under drought stress during reproductive stages, roots grew vigorously below 48 cm of the soil layer. Drought stress during generative stage reduced root dry weight each layer. Drought stress during 7 and 14 days at different beginning times could change the roots grew deeper than under well-watered condition. Dry weight of root in each lower soil layers was higher than under well-watered conditions. In contrast, drought stress during 21 days had reduced root dry weight each soil layer.
Utilization of wood ash as seedling media of Cocoa (Theobroma cacao) Fitria Nugraheni Sukmawati; Zulkifli Zein
Gontor AGROTECH Science Journal Vol 2, No 2 (2016): December 2016 (suplement)
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v2i2.728

Abstract

An effort to increase productivity is provision of inorganic fertilizers. Inorganic fertilizer application in longtem as found to attenuate the availability of micronutrients and to decrease soil fertility. One possibility to replace inorganic fertilizer is the use of ash derived from plants, such as wood ash. The purpose of this study was to determine the effect of wood ash on soil K availability and to optimize the dose of wood ash which can give good influence on the growth of cocoa seedlings. The experiment was conducted at the experimental station Polytechnic LPP in Wedomartani, Sleman, Yogyakarta. The design used is non factorial randomized block design with 5 treatments, which is the ratio of ash and soil 0: 1 (A1 / Control); 0.25: 1 (A2); 0.5: 1 (A3); 0.75: 1 (A4); and 1: 1 (A5). Observations of treatment effects were made on the seedling height, number of leaves, stem diameter, wet weight and dry weight. Soil analysis was conducted to determine the content of macro elements, micro elements, and pH media. The results showed that ash increases the pH of the media to alkaline range and increase the availability of P and K soil to toxic range. Giving ash reduced the availability of N and caused chlorosis on cocoa seedlings.

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