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Agrica: Journal of Sustainable Dryland Agriculture
Published by Universitas Flores
ISSN : 27156613     EISSN : 27154955     DOI : https://doi.org/10.37478/agr
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry
Agrica: Journal of Sustainable Dryland Agriculture is a journal that presents a platform for sharing knowledge in science and technology related to Sustainable Dryland Agriculture. Its studies are agronomy, pest and plant diseases, soil science, agricultural conservation and ecology, organic farming, agrobiodiversity, agrotourism, permaculture covering the economic aspects of dryland sustainable agricul¬ture (agribusiness, agricultural socio-economic,, agroindustry), agricultural diversification, land and water conservation, agricultural climate, food security, animal welfare concept, mechanization, science and food technology in a dryland environment.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 267 Documents
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PENGARUH DOSIS PUPUK KASCING DAN NITROGEN TERHADAP PERTUMBUHAN DAN HASIL TANAMAN SELADA (LACTVCA SATIVA L.) VAR GEORGIA Ketut Turaini Indra Winten
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.481

Abstract

The low of growth and yield of lettuce is quite often caused by the low of soil fertility, especially nitrogen and C-organic content. Poor soil physical properties also contribute to the cause of low yield of lettuce. Improved soil physical and chemical properties by adding casting fertilizers and nitrogen are expected to be able to increase the yields of lettuce. The field experiment was conducted in Candikuning village, district of Baturiti, Tabanan regency, from October 2005 to January 2006. The objective of the experiment was to study the effect of casting fertilizer and nitrogen rates on the growth and yields of lettuce. A randomized complete block design was used in this experiment and two treatment factors were imposed. Those two treatment factors were rates of casting fertilizers (i.e. 0, 10, 20 and 30 t ha"1 ) and rates of N (i.e. 0, 92, 138 and 184 kg N ha"1), which were arranged factorially and repeated three times. Results of the experiment indicated that interaction between casting fertilizer and nitrogen rates did not significantly affect the yields of lettuce. The rates of N only significantly affected several growth variables and the oven-dry weight of heads plant-1. Increased rates of N from 0 to 92 kg N ha-1 significantly resulted in the oven-dry weight of heads of 2.798 g plant-1 which was 13.9% higher than that of 0 kg N ha-1. Rates of casting fertilizer significantly affected head diameter and the oven-dry weight of heads plant"1 and ha-1. Increased rates of casting fertilizer from 0 to 10 t ha-1 gave the oven-dry weight of heads as much as 0.232 t ha"1 or 9.43% higher than the weight given by the rate of 0 t ha-1. The effects of rates of casting fertilizer and N were only significant on several soil physical properties. The relationship between rates of casting fertilizer and yields of lettuce was quadratic (Y = 0.21135 + 0.0032 X - 0.001 X2 ; R2 = 0.981). The optimum rate of casting fertilizer was 16.0 t ha-1 with the maximum oven-dry weight of heads of 0.237 t ha-1, meanwhile, the optimum rate of N had not obtained in this experiment.
PENGARUH DOSIS PUPUK KASCING DAN NITROGEN TERHADAP PERTUMBUHAN DAN HASIL TANAMAN SELADA (LACTVCA SATIVA L.) VAR GEORGIA Winten, Ketut Turaini Indra
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.481

Abstract

The low of growth and yield of lettuce is quite often caused by the low of soil fertility, especially nitrogen and C-organic content. Poor soil physical properties also contribute to the cause of low yield of lettuce. Improved soil physical and chemical properties by adding casting fertilizers and nitrogen are expected to be able to increase the yields of lettuce. The field experiment was conducted in Candikuning village, district of Baturiti, Tabanan regency, from October 2005 to January 2006. The objective of the experiment was to study the effect of casting fertilizer and nitrogen rates on the growth and yields of lettuce. A randomized complete block design was used in this experiment and two treatment factors were imposed. Those two treatment factors were rates of casting fertilizers (i.e. 0, 10, 20 and 30 t ha"1 ) and rates of N (i.e. 0, 92, 138 and 184 kg N ha"1), which were arranged factorially and repeated three times. Results of the experiment indicated that interaction between casting fertilizer and nitrogen rates did not significantly affect the yields of lettuce. The rates of N only significantly affected several growth variables and the oven-dry weight of heads plant-1. Increased rates of N from 0 to 92 kg N ha-1 significantly resulted in the oven-dry weight of heads of 2.798 g plant-1 which was 13.9% higher than that of 0 kg N ha-1. Rates of casting fertilizer significantly affected head diameter and the oven-dry weight of heads plant"1 and ha-1. Increased rates of casting fertilizer from 0 to 10 t ha-1 gave the oven-dry weight of heads as much as 0.232 t ha"1 or 9.43% higher than the weight given by the rate of 0 t ha-1. The effects of rates of casting fertilizer and N were only significant on several soil physical properties. The relationship between rates of casting fertilizer and yields of lettuce was quadratic (Y = 0.21135 + 0.0032 X - 0.001 X2 ; R2 = 0.981). The optimum rate of casting fertilizer was 16.0 t ha-1 with the maximum oven-dry weight of heads of 0.237 t ha-1, meanwhile, the optimum rate of N had not obtained in this experiment.
UJI AKTIVITAS INSEKTISIDA BEBERAPA EKSTRAK TANAMAN PADA HAM A LIRIOMYZA SATIVAE (BLANCHARD) Karolus A.N. Nainiti; I Wayan Supartha; IG.M.Oka Nurjaya
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.482

Abstract

The usage of herbal insecticide for leafminer control is based on the principle that organic compounds that are produced by plants to survive from the leafminer are selective, can be digested by the organism, and also can be broken down by heat, oxygen, and sunshine. This study was to test the activity of 15 plant extracts to find out which kinds of plant extracts had insecticide activity to Liriomyza Sativa. The study design was a randomized block design, with 17 treatments (15 kinds of plant extract and two controls), and was replicated five times. The trials were done at the glasshouse of Pest and Plant Disease Department of Agricultural Faculty at Udayana University. The results of the study showed that each plant extract that was used in this trial had different insecticide activity to L Sativa. The seed coat extract from the seed A. occidentale L. and the extract of P. retrofractum Vahl had the highest insecticide activity to L sativae.
UJI AKTIVITAS INSEKTISIDA BEBERAPA EKSTRAK TANAMAN PADA HAM A LIRIOMYZA SATIVAE (BLANCHARD) Nainiti, Karolus A.N.; Supartha, I Wayan; Nurjaya, IG.M.Oka
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.482

Abstract

The usage of herbal insecticide for leafminer control is based on the principle that organic compounds that are produced by plants to survive from the leafminer are selective, can be digested by the organism, and also can be broken down by heat, oxygen, and sunshine. This study was to test the activity of 15 plant extracts to find out which kinds of plant extracts had insecticide activity to Liriomyza Sativa. The study design was a randomized block design, with 17 treatments (15 kinds of plant extract and two controls), and was replicated five times. The trials were done at the glasshouse of Pest and Plant Disease Department of Agricultural Faculty at Udayana University. The results of the study showed that each plant extract that was used in this trial had different insecticide activity to L Sativa. The seed coat extract from the seed A. occidentale L. and the extract of P. retrofractum Vahl had the highest insecticide activity to L sativae.
ANALISIS FINANSIAL DIVERSIFIKASI PRODUK KELAPA MENJADI VCO (Virgin Coconut Oil) DENGAN METODE EMULSI Imaculata Fatima
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.483

Abstract

Coconut plant is a plant that grows in a tropical area. It dominates growing in the coastal area. Ende Regency is a part of the district, located in East Nusa Tenggara Provence particularly in Flores island. The plan is one of the commodities in Ende that support it increase the income of the people generally. However, coconut is relatively low. For instance, one fruit is five hundred or a thousand rupiah. In reality, each plant of coconut can produce 25-30 fruits every month (APCC, 2004). Most of the coconut plants in Ende is a kind of local coconut which is known "Kelapa Dalam Lokal". This kind of commodity contains high oil quality which may be treated to produce more oil. Traditionally, farmers usually produce coconut oil which can improve their home income. This oil production is well known in Ende regency as "klentik oil or tandusan oil". Most people and farmers say that oil production can not give enough benefits or profits for supporting their home economic. For this reason, it is very important to change the way of how to treat coconut fruits in order to give more quality of the coconut oil. This new way is recognized as the emulsion method. Its actually is a new technology to process the coconut fruit to become virgin coconut oil (VCO). This analysis is conducted to find out the validity of the production and to know the profits of the production in regards to improving the income of the farmer. Financial analysis includes the analysis of validity in interpreneuring (R/C ratio), the impact price, and impact focus of production. Producing the virgin coconut oil has run at Faculty of Agriculture, Flores University on semester IV, period 2007- 2008. The validity analysis indicates that the R/C ratio peaks 2,69. It shows that this product is suitable to be carried on. The treatment of coconut oil and klentik oil. The price of 80 coconut fruits can produce 7.500 ml VCO and 1.500 ml klentik oil. The price of the VCO is Rp. 46,93,- per ml while production impact is 1.700 ml. In contrast to the price of kentik oil is Rp. 174,67,- per ml while its production impact is 2.620 ml. Thus, from the financial aspect, diversification of coconut to become virgin coconut oil and klentik oil simultaneously with emulsion method is appropriate to be conducted by farmers of coconut in order to improve their production the future time.
ANALISIS FINANSIAL DIVERSIFIKASI PRODUK KELAPA MENJADI VCO (Virgin Coconut Oil) DENGAN METODE EMULSI Fatima, Imaculata
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.483

Abstract

Coconut plant is a plant that grows in a tropical area. It dominates growing in the coastal area. Ende Regency is a part of the district, located in East Nusa Tenggara Provence particularly in Flores island. The plan is one of the commodities in Ende that support it increase the income of the people generally. However, coconut is relatively low. For instance, one fruit is five hundred or a thousand rupiah. In reality, each plant of coconut can produce 25-30 fruits every month (APCC, 2004). Most of the coconut plants in Ende is a kind of local coconut which is known "Kelapa Dalam Lokal". This kind of commodity contains high oil quality which may be treated to produce more oil. Traditionally, farmers usually produce coconut oil which can improve their home income. This oil production is well known in Ende regency as "klentik oil or tandusan oil". Most people and farmers say that oil production can not give enough benefits or profits for supporting their home economic. For this reason, it is very important to change the way of how to treat coconut fruits in order to give more quality of the coconut oil. This new way is recognized as the emulsion method. Its actually is a new technology to process the coconut fruit to become virgin coconut oil (VCO). This analysis is conducted to find out the validity of the production and to know the profits of the production in regards to improving the income of the farmer. Financial analysis includes the analysis of validity in interpreneuring (R/C ratio), the impact price, and impact focus of production. Producing the virgin coconut oil has run at Faculty of Agriculture, Flores University on semester IV, period 2007- 2008. The validity analysis indicates that the R/C ratio peaks 2,69. It shows that this product is suitable to be carried on. The treatment of coconut oil and klentik oil. The price of 80 coconut fruits can produce 7.500 ml VCO and 1.500 ml klentik oil. The price of the VCO is Rp. 46,93,- per ml while production impact is 1.700 ml. In contrast to the price of kentik oil is Rp. 174,67,- per ml while its production impact is 2.620 ml. Thus, from the financial aspect, diversification of coconut to become virgin coconut oil and klentik oil simultaneously with emulsion method is appropriate to be conducted by farmers of coconut in order to improve their production the future time.
ISOLASI DAN IDENTIFIKASI SENYAWA YANG BERSIFAT ANTIBAKTERI DAN TOKSIK DALAM TUMBUHAN ILER {Coleiis scutellarioides [L.] Benth) Dionisius Tungga; I Made Dira Swantara; Yenni Ciawi
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.484

Abstract

The isolation and identification of antibacterial and toxic compound on Coleiis scutellarioides [L.] Benth. has been conducted. The extraction applied was maceration method using ethanol 85 %. The ethanol extract then partitioned using three kinds of solvents namely n-hexane, chloroform, ethyl acetate respectively. The most toxic and active antibacterial extraction was separated by chromatography column with n-hexane: chloroform as the mobile phase. Identification of the active isolate was conducted by gas chromatography-mass spectroscopy with the aim of'Wiley 229.L database. Toxic test and antibacterial activity test showed that FB2 was proved to be the most toxic and active antibacterial one. The most toxic and active antibacterial fraction of FB2 showed a retardation area of 66,98 mm2 to Micrococcus luteus and 54,43 mm2 to Escherichia coli, and LC50 at 90,72 ppm. Gas chromatography-mass spectroscopy data show that the FB2 fraction contains 4 compounds namely palmitate acid (24,41%); stearate acid (19,53%); 9-oktadekenamida (22,95%); and Esther dioctyl hexadioat (33,11 %»)•
ISOLASI DAN IDENTIFIKASI SENYAWA YANG BERSIFAT ANTIBAKTERI DAN TOKSIK DALAM TUMBUHAN ILER {Coleiis scutellarioides [L.] Benth) Tungga , Dionisius; Swantara , I Made Dira; Ciawi, Yenni
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.484

Abstract

The isolation and identification of antibacterial and toxic compound on Coleiis scutellarioides [L.] Benth. has been conducted. The extraction applied was maceration method using ethanol 85 %. The ethanol extract then partitioned using three kinds of solvents namely n-hexane, chloroform, ethyl acetate respectively. The most toxic and active antibacterial extraction was separated by chromatography column with n-hexane: chloroform as the mobile phase. Identification of the active isolate was conducted by gas chromatography-mass spectroscopy with the aim of'Wiley 229.L database. Toxic test and antibacterial activity test showed that FB2 was proved to be the most toxic and active antibacterial one. The most toxic and active antibacterial fraction of FB2 showed a retardation area of 66,98 mm2 to Micrococcus luteus and 54,43 mm2 to Escherichia coli, and LC50 at 90,72 ppm. Gas chromatography-mass spectroscopy data show that the FB2 fraction contains 4 compounds namely palmitate acid (24,41%); stearate acid (19,53%); 9-oktadekenamida (22,95%); and Esther dioctyl hexadioat (33,11 %»)•
PERLUNY A EVALUASI KINERJA PARASITOID PADA HAMA DAUN KELAPA : BRONTISPA LONGISSIMA GESTRO (COLEOPTERA: CHRYSOMELIDAE) DI KABUPATEN ENDE-FLORES Sri Wahyuni
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.485

Abstract

Brontispa longissima Gestro (Coleoptera: Chrysomelidae) is ones of the most important pest who attack of many family palms in South East Asia. In Indonesia, Brontispa longissima has. becomes a primer pest on coconut. It was Decreasing yield result up to 30 - 40 % returns and 5% of the attacked crops will die. Ones of the failed reason of control action is a low preventive system on every territory entrance, otherwise, coconut was a needful and fast-moving commodity for people and industry. The second reason is secondary commodity assumes and low cropping system caused pest and disease uncontrolled. Three bio-control usages on-field need to monitored caused farmers incapable. The success indicator for parasitoid release was quick and easy to adapt for the parasitoid. It was related " three-generation three years," theory by Ev Clausen, the expert of integrated pest and management control from California says: a) The perfectly of Effective parasitoid/predator always quick and easy to adapt, b) The failed parasitoid/predator to adapt easily and quickly was an ineffective indicator for bio-control, c) Parasitoid release or exotic predator could be stopped for 3 years if no evidence adapt on fields. According to the experts, the key for the success of system controlling above depends on cropping agroecosystem stability.
PERLUNY A EVALUASI KINERJA PARASITOID PADA HAMA DAUN KELAPA : BRONTISPA LONGISSIMA GESTRO (COLEOPTERA: CHRYSOMELIDAE) DI KABUPATEN ENDE-FLORES Wahyuni, Sri
AGRICA Vol. 1 No. 2 (2008): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i2.485

Abstract

Brontispa longissima Gestro (Coleoptera: Chrysomelidae) is ones of the most important pest who attack of many family palms in South East Asia. In Indonesia, Brontispa longissima has. becomes a primer pest on coconut. It was Decreasing yield result up to 30 - 40 % returns and 5% of the attacked crops will die. Ones of the failed reason of control action is a low preventive system on every territory entrance, otherwise, coconut was a needful and fast-moving commodity for people and industry. The second reason is secondary commodity assumes and low cropping system caused pest and disease uncontrolled. Three bio-control usages on-field need to monitored caused farmers incapable. The success indicator for parasitoid release was quick and easy to adapt for the parasitoid. It was related " three-generation three years," theory by Ev Clausen, the expert of integrated pest and management control from California says: a) The perfectly of Effective parasitoid/predator always quick and easy to adapt, b) The failed parasitoid/predator to adapt easily and quickly was an ineffective indicator for bio-control, c) Parasitoid release or exotic predator could be stopped for 3 years if no evidence adapt on fields. According to the experts, the key for the success of system controlling above depends on cropping agroecosystem stability.

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