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EFEKTIVITAS STRAIN BRADYRHIZOBIUM JAPONICUM YANG DIISOLASI DARI BEBERAPA LOKASI DI ENDE TERHADAP PEMBENTUKAN NODUL DAN PENAMBATAN NITROGEN PADA TANAMAN KEDELAI (GLYCINE MAX L.) Kristina Erniyani
AGRICA Vol. 3 No. 2 (2010): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v3i2.501

Bacteria Bradyrhizobium spp. From nodules on soybean plants, bind nitrogen from the air and make it freely available to plants. Amount of nitrogen fixed depends on the ability of a strain to form nodules, nodule effectiveness and environmental conditions. On land – land that had been planted with soybeans, inoculation with Bradyrizhobium bacteria are often not required. To test these lands in the district of Ende, NTT has conducted an experiment with a factor in the design of Randomized Complete with nine treatment groups. The treatment consists of (i) inoculation with the soybean crop in the ground former Ekoae (R1), (ii) inokulasi with soil former soybean plants in Ndona (R2), (iii) inoculation of soybean plants with the soil used in Flores (R3), (iv) Brady rhizobium isolates from soybean nodules in Ekoae (R4), (v) Bradyrhizobium isolates from nodules of soybean plants is in Ndona (R5), (v) Bradyrhozobium isolates from nodules of soybean plants at Flores (R6) (vii) a commercial inoculant legin (L), (viii) fertilizer nitrogen (N), and (ix) Control (K). all treatments were repeated 4 times. Land used in these experiments is the land of Ndona. The experiment was carried out since faculty, Udayana University. The highest percentage of effective nodules on the treatment Bradyrhizobium isolates from sybean nodules in Ndona (R5). Total nitrogen levels at the age of 45 HST in the highest in soybean plants that received 100 kg ha-1 urea and soybeans that have a desolate Bradyrhizobium inoculation of soybean nodules in Ndona (R). Efficiency and levels of symbiotic nitrogen fixation result obtained highest in soybean plants that received an inoculation Bradyrhizobium diisolat soybean nodules in Ndona (R5). Oven dry weight of plants that from the age of 45 HST on all isolates are equivalent to the oven-dry weight of plants at the fertilization of 100 kg ha- 1 urea. The result shoed that the land – the land of Ekoae, Ndona and Fkres have high Bradirhizobium contain bacteria. Bacteria Bradyrhizobium cp. Most numerous in the isolates from soybean nodules in Ndona (R5) the most efficient from effective nodules is 82.26% and as high as the 0.52% N fixate. These results indicate that isolates from Ndona Bradyrhizobiun veeb able to form effective nonudel on yoy beans grown in soil from Ndona. The result also indicates inoculation with a commercial inoculant was obtained not on land – land planted with soybeans used

EFEKTIVITAS STRAIN BRADYRHIZOBIUM JAPONICUM YANG DIISOLASI DARI BEBERAPA LOKASI DI ENDE TERHADAP PEMBENTUKAN NODUL DAN PENAMBATAN NITROGEN PADA TANAMAN KEDELAI (GLYCINE MAX L.) Erniyani, Kristina
AGRICA Vol. 3 No. 2 (2010): December
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Bacteria Bradyrhizobium spp. From nodules on soybean plants, bind nitrogen from the air and make it freely available to plants. Amount of nitrogen fixed depends on the ability of a strain to form nodules, nodule effectiveness and environmental conditions. On land ? land that had been planted with soybeans, inoculation with Bradyrizhobium bacteria are often not required. To test these lands in the district of Ende, NTT has conducted an experiment with a factor in the design of Randomized Complete with nine treatment groups. The treatment consists of (i) inoculation with the soybean crop in the ground former Ekoae (R1), (ii) inokulasi with soil former soybean plants in Ndona (R2), (iii) inoculation of soybean plants with the soil used in Flores (R3), (iv) Brady rhizobium isolates from soybean nodules in Ekoae (R4), (v) Bradyrhizobium isolates from nodules of soybean plants is in Ndona (R5), (v) Bradyrhozobium isolates from nodules of soybean plants at Flores (R6) (vii) a commercial inoculant legin (L), (viii) fertilizer nitrogen (N), and (ix) Control (K). all treatments were repeated 4 times. Land used in these experiments is the land of Ndona. The experiment was carried out since faculty, Udayana University. The highest percentage of effective nodules on the treatment Bradyrhizobium isolates from sybean nodules in Ndona (R5). Total nitrogen levels at the age of 45 HST in the highest in soybean plants that received 100 kg ha-1 urea and soybeans that have a desolate Bradyrhizobium inoculation of soybean nodules in Ndona (R). Efficiency and levels of symbiotic nitrogen fixation result obtained highest in soybean plants that received an inoculation Bradyrhizobium diisolat soybean nodules in Ndona (R5). Oven dry weight of plants that from the age of 45 HST on all isolates are equivalent to the oven-dry weight of plants at the fertilization of 100 kg ha- 1 urea. The result shoed that the land ? the land of Ekoae, Ndona and Fkres have high Bradirhizobium contain bacteria. Bacteria Bradyrhizobium cp. Most numerous in the isolates from soybean nodules in Ndona (R5) the most efficient from effective nodules is 82.26% and as high as the 0.52% N fixate. These results indicate that isolates from Ndona Bradyrhizobiun veeb able to form effective nonudel on yoy beans grown in soil from Ndona. The result also indicates inoculation with a commercial inoculant was obtained not on land ? land planted with soybeans used

PENGARUH JARAK TANAM JAGUNG MANIS (Zea mays Saccharata STURT) DAN VARIETAS KUBIS (Brassica oleracea VAR. CAPITATA) TERHADAP HASIL JAGUNG MANIS DAN KUBIS PADA SISTEM TUMPANGSARI DI DESA CANDI KUNING, TABANAN I Wayan Sunarta
AGRICA Vol. 2 No. 1 (2009): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v2i1.539

Diversification of plant species is needed to anticipate price fluctuation of vegetables. Intercropping system compared to monoculture can give more benefits to farmers. The arrangement of plant spacings of sweet corn and cabbage variety is expected to result in higher yields and benefits in intercropping. The field experiment, which had the objective to study the effects of plant spacing of sweet corn and cabbage variety on yields of sweet corn and cabbage in the intercropping system, had been conducted from March to July 2008. The experiment was carried out at the dryland farming area at Candikuning Village, district of Baturiti, Tabanan regency, 1.200 m asl. In the experiment, a randomized complete block design with two factors namely plant spacing of sweet corn (120 cm x40 cm, 180 cm x 40 cm and 240 cm x 40 cm) and variety of cabbage (Green Nova and Summer-Autumn) were used. Plant spacing of cabbage was 60 cm x 40 cm. All treatments were replicated four times. The results of the experiment showed that the effect of interaction between plant spacing of sweet corn and cabbage variety in intercropping was not significant on yields of sweet corn and cabbage. Individually, sweet corn plant spacing of 120 cm x40 cm gave the highest fresh weight of cob without husk (10,91 t ha"'), which was 44.50% and 80.93% respectively higher than the spacing of ! 80 cm x 40 cm and 240 cm x 40 cm. The spacing of 180 cm x 40 cm resulted in not the significantly different fresh weight of cob with husk but gave the highest fresh weight of cabbage heads (56.101 ha'1), which was 27.36% higher than that at sweet corn spacing of 120 cm x 40 cm and was not significantly different from that at 240 cm x 40 cm. Cabbage variety Green Nova gave the highest head (56.101 ha1), which was 14.48% higher than variety Summer-Autumn. Intercropping between cabbage variety Green Nova and Sweet corn at 180 cm x 40 cm spacing resulted in the highest benefit (Rp. 20,488125 t ha'1), which was Rp. 3,335500 higher than the average benefit of cabbage monoculture. The efficiency of land use in intercropping was higher (LER: 1.69) than in monoculture (LER: 1). It is suggested to use cabbage variety Green Nova intercropped with sweet corn at I 80 cm x 40 cm spacing. An experiment studying the effect of cabbage intercropped with sweet corn and other short season vegetables planted after harvesting cabbages is also suggested.

PENGARUH JARAK TANAM JAGUNG MANIS (Zea mays Saccharata STURT) DAN VARIETAS KUBIS (Brassica oleracea VAR. CAPITATA) TERHADAP HASIL JAGUNG MANIS DAN KUBIS PADA SISTEM TUMPANGSARI DI DESA CANDI KUNING, TABANAN Sunarta, I Wayan
AGRICA Vol. 2 No. 1 (2009): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v2i1.539

Diversification of plant species is needed to anticipate price fluctuation of vegetables. Intercropping system compared to monoculture can give more benefits to farmers. The arrangement of plant spacings of sweet corn and cabbage variety is expected to result in higher yields and benefits in intercropping. The field experiment, which had the objective to study the effects of plant spacing of sweet corn and cabbage variety on yields of sweet corn and cabbage in the intercropping system, had been conducted from March to July 2008. The experiment was carried out at the dryland farming area at Candikuning Village, district of Baturiti, Tabanan regency, 1.200 m asl. In the experiment, a randomized complete block design with two factors namely plant spacing of sweet corn (120 cm x40 cm, 180 cm x 40 cm and 240 cm x 40 cm) and variety of cabbage (Green Nova and Summer-Autumn) were used. Plant spacing of cabbage was 60 cm x 40 cm. All treatments were replicated four times. The results of the experiment showed that the effect of interaction between plant spacing of sweet corn and cabbage variety in intercropping was not significant on yields of sweet corn and cabbage. Individually, sweet corn plant spacing of 120 cm x40 cm gave the highest fresh weight of cob without husk (10,91 t ha"'), which was 44.50% and 80.93% respectively higher than the spacing of ! 80 cm x 40 cm and 240 cm x 40 cm. The spacing of 180 cm x 40 cm resulted in not the significantly different fresh weight of cob with husk but gave the highest fresh weight of cabbage heads (56.101 ha'1), which was 27.36% higher than that at sweet corn spacing of 120 cm x 40 cm and was not significantly different from that at 240 cm x 40 cm. Cabbage variety Green Nova gave the highest head (56.101 ha1), which was 14.48% higher than variety Summer-Autumn. Intercropping between cabbage variety Green Nova and Sweet corn at 180 cm x 40 cm spacing resulted in the highest benefit (Rp. 20,488125 t ha'1), which was Rp. 3,335500 higher than the average benefit of cabbage monoculture. The efficiency of land use in intercropping was higher (LER: 1.69) than in monoculture (LER: 1). It is suggested to use cabbage variety Green Nova intercropped with sweet corn at I 80 cm x 40 cm spacing. An experiment studying the effect of cabbage intercropped with sweet corn and other short season vegetables planted after harvesting cabbages is also suggested.

PEMANFAATAN LIMBAH ORGANIK DENGAN PENAMBAHAN BIOFUND UNTUK MENINGKATKAN PRODUKSI TANAMAN JAGUNG (Zea mays L.) Murdaningsih Murdaningsih
AGRICA Vol. 2 No. 1 (2009): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v2i1.540

Organic waste comes from pigswill livestock can used as a plant nutrient source. Organic material has a significant influence on agriculture productivity. Organic material added continually was an effective way to maintain soil health, it will provide soil organisms food, increasing available nutrient and maintain soil physic characteristic. Otherwise, organic waste added still not get an optimal result. That's why organic waste added from pigswill livestock and bio fund as activator was one of the alternative ways. This study was aimed to know pigswill livestock waste potential as organic material added on nutrient availability in order to improve plant productivity and the influence on plant production. This study consisted of two stages; i.e. the first study was soil incubation for 20 days, and the second was maize plant application. The method used was Complete Factorial Randomized design with 2 factors and 3 replicates. The results showed that pigswill livestock organic waste and bio fund will increase soil C, N, P, and K exchange. It happened especially on FIBl and F1B3 treatment; it marks with the increasing trend on every week. The highest production was found on F1B3 (256.63 plants"') and the lowest on FIBO (I I7.U plant').

PEMANFAATAN LIMBAH ORGANIK DENGAN PENAMBAHAN BIOFUND UNTUK MENINGKATKAN PRODUKSI TANAMAN JAGUNG (Zea mays L.) Murdaningsih, Murdaningsih
AGRICA Vol. 2 No. 1 (2009): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v2i1.540

Organic waste comes from pigswill livestock can used as a plant nutrient source. Organic material has a significant influence on agriculture productivity. Organic material added continually was an effective way to maintain soil health, it will provide soil organisms food, increasing available nutrient and maintain soil physic characteristic. Otherwise, organic waste added still not get an optimal result. That's why organic waste added from pigswill livestock and bio fund as activator was one of the alternative ways. This study was aimed to know pigswill livestock waste potential as organic material added on nutrient availability in order to improve plant productivity and the influence on plant production. This study consisted of two stages; i.e. the first study was soil incubation for 20 days, and the second was maize plant application. The method used was Complete Factorial Randomized design with 2 factors and 3 replicates. The results showed that pigswill livestock organic waste and bio fund will increase soil C, N, P, and K exchange. It happened especially on FIBl and F1B3 treatment; it marks with the increasing trend on every week. The highest production was found on F1B3 (256.63 plants"') and the lowest on FIBO (I I7.U plant').

UPAYA MEMINIMALISIR DAMPAK LINGKUNGAN DARI PENGGUNAAN PESTISIDA DALAM PERTANIAN (DAMPAK LINGKUNGAN DAN PENANGGULANGANNYA) Hadis Jayanti; Dewa Ngurah Suprapta
AGRICA Vol. 2 No. 1 (2009): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v2i1.541

Utilization of synthetic pesticide seems up to now remains to be one of the methods in controlling pest and plant disease because it plays a role in determining the quality and quantity of the crops. Improver of synthetic pesticide in agriculture can adversely affect the ecosystem such as water and soil pollution. The occurrence of pest resistance, the outbreak of secondary pest, the resurgence of pest, the death of predators, the residue of pesticide in food, and the pesticide residue that affects man's health. Although it has been widely known that pesticide has a bad impact on the environment, the use of pesticide is still needed in agricultural practice. Its use needs to pay attention to the concept of Integrated Pest Management in which the use of pesticide is only made when it is absolutely necessary, that is, when the population of pest increases and lies above one level of the pest population, the Economic Threshold (Untung, 1993). To know the safety level of pesticide, evaluation of toxicity of a pesticide is needed and it is commonly tested in the animal of high level. This is done in such a way that the toxicity and safety level of the pesticide can be known by farmers, users of pesticide, and the environment. Based on the information on the toxicity level, it is expected that the steps of environmental management can be taken to minimize the negative impact of pesticide. The effort of minimizing the negative impact of pesticide can be done in a variety of ways. For example, the direction was given to the users in terms of giving the dosage, application time, safe working procedure, choosing pesticide with the precise target, choosing a pesticide that can decompose easily, application target, a time before harvest, tool and exact application technique, keeping as small pollution as possible. In the future, it is hoped that the use of pesticide will decrease and will be more selective, and supported by new inventions in the technology of processing pesticide disposal and the technology of utilizing botanical pesticide which is all expected to be effective in overcoming the disturbance of pest and plant disease at the same time minimizing environmental degradation.

UPAYA MEMINIMALISIR DAMPAK LINGKUNGAN DARI PENGGUNAAN PESTISIDA DALAM PERTANIAN (DAMPAK LINGKUNGAN DAN PENANGGULANGANNYA) Jayanti , Hadis; Suprapta , Dewa Ngurah
AGRICA Vol. 2 No. 1 (2009): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v2i1.541

Utilization of synthetic pesticide seems up to now remains to be one of the methods in controlling pest and plant disease because it plays a role in determining the quality and quantity of the crops. Improver of synthetic pesticide in agriculture can adversely affect the ecosystem such as water and soil pollution. The occurrence of pest resistance, the outbreak of secondary pest, the resurgence of pest, the death of predators, the residue of pesticide in food, and the pesticide residue that affects man's health. Although it has been widely known that pesticide has a bad impact on the environment, the use of pesticide is still needed in agricultural practice. Its use needs to pay attention to the concept of Integrated Pest Management in which the use of pesticide is only made when it is absolutely necessary, that is, when the population of pest increases and lies above one level of the pest population, the Economic Threshold (Untung, 1993). To know the safety level of pesticide, evaluation of toxicity of a pesticide is needed and it is commonly tested in the animal of high level. This is done in such a way that the toxicity and safety level of the pesticide can be known by farmers, users of pesticide, and the environment. Based on the information on the toxicity level, it is expected that the steps of environmental management can be taken to minimize the negative impact of pesticide. The effort of minimizing the negative impact of pesticide can be done in a variety of ways. For example, the direction was given to the users in terms of giving the dosage, application time, safe working procedure, choosing pesticide with the precise target, choosing a pesticide that can decompose easily, application target, a time before harvest, tool and exact application technique, keeping as small pollution as possible. In the future, it is hoped that the use of pesticide will decrease and will be more selective, and supported by new inventions in the technology of processing pesticide disposal and the technology of utilizing botanical pesticide which is all expected to be effective in overcoming the disturbance of pest and plant disease at the same time minimizing environmental degradation.

RESPON BIOLOGIS BEBERAPA JENIS PARASITOID PADA LALAT PENGGOROK DAUN Liriomyza huidobrensis BLANCHARD Sri Wahyuni; I Wayan Supartha
AGRICA Vol. 2 No. 1 (2009): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v2i1.543

This research conducted to know the biological responses of leaf miner parasitoid Liriomyza huidobrensis is Hemyptarsenus varicomis Girault (Eulophidae), Opius sp (Braconidae) and Gronotoma micromorpha (Eucoilidae). Three species of parasitoid chosen as the substance of research caused by biological agent superiorities. On this research, there are some observed that is long life imagoes, preoviposition, oviposition period, after oviposition, The egg-laying rate, fertilization, daily fertilization, mortality and female proportion. This research was conducted for four-month at Ecology Laboratory and Insect Systematics and at the Green House of Pest and Plant Diseases Department, Faculty of Agriculture Udayana University in Denpasar. Used substance of host kidney bean (Vigna sinensis L ) host insect ( L. Huidobrensis ) and species of the parasitoid (H.varicornis, Opius sp and G.micromorpha) The experiments using randomized complete block design was used in this research. The observed results indicated that betwen three species of parasitoid used H.varicornis has preoviposition period and time after oviposition shortest so that to reproduce generation of H.varicornis faster than G.micromopha and Opius sp. At the meantime the fertilization level, and best female proportion produced of H.varicornis. Mortality on G.micromorpha and O.liriomyzae cause of paralyzing and host- feeding by H.varicornis. Mortality on G.micromorpha and Opius sp influential to female proportion number that produced that is the mortality of female generation caused of paralyzing and host-feeding by H. varicornis, So that fertilizing level, parasitisation level and female proportion higher happen if G.micromorpha or Opius sp released after releasing H. varicornis

RESPON BIOLOGIS BEBERAPA JENIS PARASITOID PADA LALAT PENGGOROK DAUN Liriomyza huidobrensis BLANCHARD Wahyuni, Sri; Supartha, I Wayan
AGRICA Vol. 2 No. 1 (2009): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v2i1.543

This research conducted to know the biological responses of leaf miner parasitoid Liriomyza huidobrensis is Hemyptarsenus varicomis Girault (Eulophidae), Opius sp (Braconidae) and Gronotoma micromorpha (Eucoilidae). Three species of parasitoid chosen as the substance of research caused by biological agent superiorities. On this research, there are some observed that is long life imagoes, preoviposition, oviposition period, after oviposition, The egg-laying rate, fertilization, daily fertilization, mortality and female proportion. This research was conducted for four-month at Ecology Laboratory and Insect Systematics and at the Green House of Pest and Plant Diseases Department, Faculty of Agriculture Udayana University in Denpasar. Used substance of host kidney bean (Vigna sinensis L ) host insect ( L. Huidobrensis ) and species of the parasitoid (H.varicornis, Opius sp and G.micromorpha) The experiments using randomized complete block design was used in this research. The observed results indicated that betwen three species of parasitoid used H.varicornis has preoviposition period and time after oviposition shortest so that to reproduce generation of H.varicornis faster than G.micromopha and Opius sp. At the meantime the fertilization level, and best female proportion produced of H.varicornis. Mortality on G.micromorpha and O.liriomyzae cause of paralyzing and host- feeding by H.varicornis. Mortality on G.micromorpha and Opius sp influential to female proportion number that produced that is the mortality of female generation caused of paralyzing and host-feeding by H. varicornis, So that fertilizing level, parasitisation level and female proportion higher happen if G.micromorpha or Opius sp released after releasing H. varicornis

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Charly Mutiara

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agricafaperta@gmail.com

Editorial Address
Jl. Sam Ratulangi, No. XX, Kel. Paupupire. Kec. Ende-Tengah, Kabupaten Ende, Provinsi Nusa Tenggara Timur (86318)

Location
Kab. ende,

Nusa tenggara timur

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Charly Mutiara

Contact Email sriwahyuni4611@gmail.com

Phone +6281237717814

Journal Mail Official agricafaperta@gmail.com

Editorial Address Jl. Sam Ratulangi, No. XX, Kel. Paupupire. Kec. Ende-Tengah, Kabupaten Ende, Provinsi Nusa Tenggara Timur (86318)

Location Kab. ende, Nusa tenggara timur INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Charly Mutiara

Contact Email
sriwahyuni4611@gmail.com

Phone
+6281237717814

Journal Mail Official
agricafaperta@gmail.com

Editorial Address
Jl. Sam Ratulangi, No. XX, Kel. Paupupire. Kec. Ende-Tengah, Kabupaten Ende, Provinsi Nusa Tenggara Timur (86318)

Location
Kab. ende,

Nusa tenggara timur

INDONESIA