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PENGARUH PENGURANGAN TONGKOL TIDAK BERKEMBANG DAN PEMBERIAN DOSIS NITROGEN TERHADAP HASIL TANAMAN JAGUNG {Zea mays L.) VARIETAS LOKAL SERAYA Erniyani, Kristina; Djelantik , A.A. Made Sudira; Sarwadana , Sang Made
AGRICA Vol. 1 No. 1 (2008): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i1.474

This research conducted to know the effect of decreasing undergrowth stem earn of corn and fertilized corn yield seraya local variety with nitrogen rates and interaction. The experimental factor is decreased unproductive stem earn consist left behind 1 stem earn (Tl), decrease by left behind 2 stem earn (T2) and without a decrease (T3). The second factor is nitrogen dosage by 0,115 and 172,5 kg N/ha. The result of research indicated a real and extremely real interaction between both of treatment factor (T x N) only happen on the amount of variable seed per line and amount of seed per crop. Treatment without decreasing undergrowth stem earn (T3) caused highly weight dry seed oven per hectare is 2,67 ton and lowest on decreasing undergrowth stem earn treatment to left behind 1 stem earn (Tl) is 1,81 ton. Nitrogen treatment 115kg/ha (N2) caused highly weight dry seed oven 2,97 ton/ha and lowest 1,56 ton by 0 kg/ha nitrogen dosage.

IDENTIFIKASI HAMA PENGGEREK DAUN Liromiza spp. (Diptera: Agromyzidae) DAN PARASITOIDNYA YANG BERASOSIASI PADA BERBAGAI JENIS TANAMAN SAYURAN DI KECAMATAN DETUSOKO DAN KELIMUTU KABUPATEN ENDE Wahyuni, Sri; Puu, Yustina Maria Silvia Wonga; Erniyani, Kristina; Jeksen, Julianus
AGRICA Vol. 1 No. 1 (2008): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i1.475

The aim of this research is to identify Liromiza spp. And the parasitoid is associated with various types of vegetable plants in Detusoko and Kelimutu Districts in Ende Regency. Data were analyzed by matching morphology of existing specimens with insect morphology books written by Bhorror 1970 and matching with standard specimens originating from Bali and Bogor. The results obtained from two vegetable producing districts in Ende, namely Detusoko and Kelimutu, show the following: There are two types of Liriomyza spp associated with several types of host plants in Ende Regency. L. huidobrensis (Diptera: Agromyzydae) is located in Kelimutu District and L Sativae (Diptera: Agromyzydae) is in Detusoko District. The diversity of parasitoids found in Detusoko Subdistrict were as many as four species from the Eulopidae family while in Kelimutu District there were five types of parasitoids originating from two families namely Braconidae and Euiopidae. Neosacharis okazaki is the most dominant type of parasitoid in each plant in Detusoko District. Opiits sp dominant in Kelimutu Subdistrict on the long bean, green beans, mustard greens, chicory and cabbage. While H. varicornis is dominant in Kelimutu District in tomato plants.

STRUKTUR KOMUNITAS MESOFAUNA TANAH PEROMBAK BAHAN ORGANIK PADA VEGETASI KOPI DAN KAKAO Erniyani, Kristina; Wahyuni, Sri; Puu, Yustina Maria Silvia Wonga
AGRICA Vol. 3 No. 1 (2010): June
Publisher : Agriculture Faculty of Flores University

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The use of inorganic fertilizers and pesticides can change the agroecosystem gradually. These changes may result in a decrease in the diversity of soil organisms. These organisms are very important in the decomposition process of reforming the organic matter into compounds that are readily absorbed by plants. Other changes include a change in the soil structure which will affect the soil chemical and physical characteristic and ultimately affect the soil productivity leading to a decreased agricultural product. The return of the remains from harvest, litter and crop residues from coffee and cocoa crops to the soil will provide energy for soil organisms and it will help maintain the soil environment that supports the life of other organisms. This research aimed at identifying the composition and diversity of mesofauna formed by the composted organic matter in cocoa and coffee plantations. Soil sampling was conducted on coffee and cocoa plantations in the Onelako village of Ndona District. Soil sampling was conducted in September 2010. Soil sampling used Neuman method of 0-15 cm and 16-30 cm depth. Each soil sample was taken to the laboratory. The separation of mesofauna from soil used Berlese-tullgran method that had been modified for 4 days. The separated Meso fauna was identified under the light microscope. The result of this research showed that the highest composition of mesofauna decomposer of organic matter in cocoa and coffee vegetation is Collembola. Collembola is very tolerant to acidic soil condition and they are dominant in the soil and surface habitats that contain lots of litter. Collembola is microarthropods that have large distribution both in quantity and diversity. The highest diversity of mesofauna on coffee vegetation is 1.525 and on cocoa, vegetation is 1.273. It was also noted that at a depth of 0-15 cm there was a higher concentration of mesofauna in the coffee vegetation area, which was about 7.3960, while in the cocoa vegetation there where 3.6376. The high level of the diversity index caused an increase in decomposition and therefore better soil fertility.

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

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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

PEMANFAATAN TANAMAN PENUTUP TANAH DALAM SISTEM USAHA TANI Erniyani, Kristina
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.v2i1.547

An intensive agriculture activity, especially that done on dry land, will result in a decrease in productivity. The land will get easily eroted, slopy, sour and poor in nutrition. Sustainable agricultural development needs technologies of conservation of land and water. One of such technologies is the technology of vegetation conservation. This refers to the planting of trees, bush, grass or land covering crops. The planting of land covering crops functions to: 1) minimize erosion; 2) minimize the growth of weeds; 3) change the microclimate and the land temperature; 4) to make sources of livestock food available; 5) increase the land organism; 6) improve the physical and chemical nature of the land. The findings of some researches show that the land covering crops can minimize the speed of erosion 40 %, increase the land fertility by 30 % and minimize the growth of weeds by 50 %.

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