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Kombinasi Varietas Kentang Generasi Satu (Gi) dengan Jarak Tanam terhadap Pertumbuhan dan Hasil Kentang (Solanum tuberosum L.) Combination of Basic Seed of Potato With Planting Scale on Growth and Production of Potato (Solanum tuberosum L.) Lehar, Laurensius
JURNAL PANGAN Vol 21, No 2 (2012): PANGAN
Publisher : Perum BULOG

Bibitkentang generasi satu (Gi) atau basic seedBmerupakan keturunan dari umbi yang dihasilkan oleh mother planet atau generasi nol (Go). Bibit generasi satu (Gi) mempunyai keunggulan, yaitu bebas dari hama dan penyakit. Penggunaan bibit yang bebas hama dan penyakit, pengaturan jarak tanam dan pemilihan varietas merupakan tiga faktor yang menentukan keberhasilan produksi dalam budidaya kentang. Tujuan percobaan adalah untuk mendapatkan jarak tanam yang sesuai pada tiga varietas kentang. Percobaan menggunakan Rancangan Acak Kelompok (RAK) faktorial dengan menggunakan dua faktor yaitu faktor pertama varietas dan faktor kedua jarak tanam. Hasil percobaan menunjukkan bahwa Varietas Desiree pada jarak tanam 10 cm x20 cm dan 20 cm x20 cm menghasilkan jumlah daun tertinggi. Verietas Desiree pada jarak tanam 20 cm x 20 cm menghasilkan jumlah umbi gradeA(2-10 g) terbanyak. Varietas Atlantik dan varietas Desiree menghasilkan tinggi tanaman tertinggi. Varietas Desiree menghasilakn jumlah umbi per tanaman dan per petak, serta berat umbi segar pertanaman tertinggi. Jarak tanam 10cm x 20 cm menghasilkan jumlah umbi per petak, dan berat umbi segar perpetak tertinggi. Jarak tanam 20cm x20cm menghasilkan berat umbi segar pertanaman tertinggi. Varietas Desiree memiliki pertumbuhan tanaman dan hasil panen yang lebih baik dibandingkan dengan varietas Atlantik dan varietas Granola.The basic seedofpotato (Gi) isa variety ofpotato produced by the mother planet or the zero generation (GO). The advantage ofthis basic seed or the first generation seed (Gi) is its disease-resistance. The use of disease-resistance seed, arrangement of planting distance andchoice varieties are the three factors that determine the success of potato production. The aim of this research is to obtain suitable planting distance on three different varieties ofpotatoes namely Desiree, Atlantic and Granola. The experiment applies Random Sampling Groups (RSG) factors using two factors namely: variety as the first factor and planting scale as the second factor. The result shows that Desiree variety atplanting distances of 10cmx 20 cmand 20 cmx 20 cmproduces the highest number of leaves whereas the Desiree variety at planting scale of20cm x 20cm produces the highest number oftubers (2-10 g). Both Atlantic variety ofpotatoes and Desiree variety produced the highest height ofplants. Desiree variety produces the highest grade and number oftubers on each plant and slot. Planting scale of 10 cm x 20 cm results in the highest production of the number and grade offresh tubers on each slot. Meanwhile, planting scale of20 cm x 20 cm produces the highest grade offresh tuber per plant. However, Desiree variety has better production and growth compared to those ofAtlantic and Granola varieties,

Pengujian Pupuk Organik Agen Hayati (Trichoderma sp) terhadap Pertumbuhan Kentang (Solanum tuberosum L) Lehar, Laurensius
Jurnal Penelitian Pertanian Terapan Vol 12, No 2 (2012)
Publisher : Politeknik Negeri Lampung.

he use of organic fertilizer and a biology agent called Trichoderma sp can be applied to reduce high cost production. The aim of the experiment was to compare the use of the biology agent (Trichoderma sp) with fungicide and organic fertilizer and non-organic fertilizer and their interactions. This experiment used Divisible Check Device (RPT) consisting of two factors namely Trichoderma sp and inorganic fungicide as a main factor and the other factor as a minor factor consisting of chicken dirt, cow dirt, kana liquid organic fertilizer, complex liquid organic fertilizer, and standard NPK fertilizer. The result of the experiment shows that there is an interaction between the use of Trichoderma sp with various kinds of fertilizers towards the height of plants from age 4-10 mst, the number of leaf at the age of 6,8 and 10 mst, wide index of the leaf at the age of 6 mst and 6 mst along with the number of branch at the age of 4 mst. Keywords: organic fertilizer,trichoderma sp, potato.

DYNAMICS OF SOIL CARBON AND N, P, K NUTRIENTS ON CORN PLANTING PATTERN IN DRY LAND Matheus Rupa; Laurensius Lehar; I Gusti Agung Mas Sri Agung
International Journal of Biosciences and Biotechnology Vol 8 No 2 (2021): International Journal of Bioscience and Biotechnology
Publisher : Central Laboratory for Genetic Resource and Molecular Biology, Faculty of Agriculture, Udayana University in cooperation with Asia-Oceania Bioscience and Biotechnology Consortium (AOBBC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJBB.2021.v08.i02.p04

A study was conducted during two planting seasons, namely planting season 1 (PS-1) 2017/2018 and (PS-2): 2018/2019, in Oelnasi Village, Central Kupang sub-district, Kupang District, East Nusa Tenggara, Indonesia. This study aimed to evaluate the rotation pattern of maize with legumes ground covers towards the dynamics of soil carbon and nutrients N, P, K during the two growing seasons in a dryland farming system. The experiment was designed using a randomized block design with 3 (three) treatments replicated five times. The treatments evaluated were: crop rotation patterns consisting of: without rotation (farmer practice) and rotation pattern with Phaseolus lunatus; rotation pattern with Mucuna pruriens. Legume crops planted after harvesting the food crop and allowed to grow during the dry season. Approaching the rainy season, the biomass of the legume crop is returned to the land by immersing them it together with soil cultivation. Chemical fertilizers is given as an independent variables with a dose of 150 kg/ha of Urea; 100 kg/ha of SP36 and 100 kg/ha of KCL. The results showed that the rotation pattern of Mucuna pruriens significantly increased the soil organic C content by 50.56% and legume Phaseolus lunatus by 37.64% to PS-2. The rotation pattern of the legume covers / covered crop also significantly increased the efficiency of agronomic nutrients (N, P, and K nutrients) and maize yields during the two growing seasons. On the other hand, the farmer pattern (without rotation) showed a decrease in soil carbon to PS-2 which of course affect the efficiency of nutrient absorption.

PEMANFAATAN PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) DALAM MENINGKATAKAN POLA PERTUMBUHAN BAWANG MERAH LOKAL (Allium ascalonicum L) SABU RAIJUA NTT Laurensius Lehar; Zainal Arifin; Heny M.C. Sine
Partner Vol 23, No 1 (2018): Edisi Juli
Publisher : Politeknik Pertanian Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35726/jp.v23i1.307

Red Onion (Allium ascalonicum L.) Sabu Raijua is one of the horticultural crops that is widely consumed by the people of East Nusa Tenggara (NTT) as a mixture of cooking spices and traditional medicines. For household consumption of around 635,700 tons, non-household consumption such asthe manufacturing industry amounting to 719,200 tons, added up to a total of 1.35 million, meaning a deficit for shallots. The purpose of this study was to obtain information about PGPR in increasing the growth pattern of local onion Sabu Raijua. Using Randomized Block Design (RBD) with 5 treatments, namely p0 (control), P1 (5 ml / liter of water / 2 plants), P2 (10 ml / liter of water / 2 plants), P3 (15 ml / liter of water / 2 plants) ), P4 (20 ml / liter of water / 2 plants) and repeated 4 times. The resultsshowed that local red onion plants of Sabu Raijua given PGPR could increase plant height (42, 45 cm), number of leaves (57.57 leaflets per plant), number of tillers per plant (13.89 tillers). The higher concentration of PGPR can increase the growth pattern of local onion Sabu Raijua plants.

RESPONS PERTUMBUHAN BEBERAPA VARIETAS TOMAT (Lycopersicum esculentum Mill) YANG DIAPLIKASIKAN PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) DI LAHAN KERING Maria Klara Salli; Laurensius Lehar
Partner Vol 22, No 1 (2017): Edisi Juli
Publisher : Politeknik Pertanian Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35726/jp.v22i1.237

The productivity of tomato plants in East Nusa Tenggara (NTT) in 2013 reached 3.43 tons/ ha or decreased 35.89% compared with 2012, this is in line with the decrease of harvested area by 2.24%. The data was also much lower compared with national production which was 15 â€“ 16 tons/ha. Some of the possibilities that might cause a decrease in production in addition to a decrease in harvested area weredue to unsuitable planted varieties, inadequate technical culture or less efficient of pest/disease controlling.Dry land has limitations in terms of soil fertility and water availability. Physical manipulation such as the biological use of useful microbeslike Â rhizobacteria might be required to overcome the limitations.This research was carried out in farmers field in Penfui Village from July to November 2016. The objective of the research was to find out whether PGPR application responded to the growth of some varieties of tomatoes grown on dry land.This study uses Divided Plot Design. The main factor as the main plot was PGPR: with PGPR and without PGPR. The second factor as subplot wereTomato varieties: Tymoti F1 variety, Lentana F1 variety, Servo F1 variety, Betavila F1 variety and variety Permata F1.The results showed that PGPR application had an effect on plant growth parameters i.e. plant height 1 week after planting (WAP), 2 WAP, and 3 WAP, leaf number at 3 WAP and stem diameter at 1 WAP, 2 WAP, 3 WAP and 4 WAP as well as the number of productive branches.Â Keywords: Tomato varieties, plant growth, PGPR, and dry land

Pengujian Pupuk Organik Agen Hayati (Trichoderma sp) terhadap Pertumbuhan Kentang (Solanum tuberosum L) Laurensius Lehar
Jurnal Penelitian Pertanian Terapan Vol 12 No 2 (2012)
Publisher : Politeknik Negeri Lampung.

he use of organic fertilizer and a biology agent called Trichoderma sp can be applied to reduce high cost production. The aim of the experiment was to compare the use of the biology agent (Trichoderma sp) with fungicide and organic fertilizer and non-organic fertilizer and their interactions. This experiment used Divisible Check Device (RPT) consisting of two factors namely Trichoderma sp and inorganic fungicide as a main factor and the other factor as a minor factor consisting of chicken dirt, cow dirt, kana liquid organic fertilizer, complex liquid organic fertilizer, and standard NPK fertilizer. The result of the experiment shows that there is an interaction between the use of Trichoderma sp with various kinds of fertilizers towards the height of plants from age 4-10 mst, the number of leaf at the age of 6,8 and 10 mst, wide index of the leaf at the age of 6 mst and 6 mst along with the number of branch at the age of 4 mst. Keywords: organic fertilizer,trichoderma sp, potato.

Pertumbuhan dan Hasil Bayam (Amaranthus cruentus L) Akibat Pemanfaatan Bahan Organik Cair Hasil Fermentasi Isi Rumen Laurensius Lehar
Jurnal Penelitian Pertanian Terapan Vol 10 No 3 (2010)
Publisher : Politeknik Negeri Lampung.

The research has been done to evaluate the growth and yield of amaranth (Amaranthus cruentus L) as application effect of liquid organic matter from rumen substance fermentation. The objectives of the research were to know: 1) The composition of Liquid organic matter (LOM) that produced from Leguminous (Lamtoro and Gamal) fermented by rumen substance, 2) The effect of the leguminous of LOM on growth and yield of Amaranth. The research used a Completely Randomized Design (CRD) with 5 treatments and times replicated. The treatments were : 1) Control (no added by LOM), 2) 6 ml L-1of LOM, 3) 12 ml L-1of LOM, 4) 18 ml L-1of LOM, and 5) 24 ml L-1 of LOM. Variable Reponses observed were : 1) The Leaf Area Index (LAI), 2) Net Asimilasi Rate (NAR), 3) Relative Growth Rate (RGR), 4) Fresh Weight of Amaranth, 5) N-P-K contents of soil before planting, and 6) N-P-K contents of Amaranth. The result showed that : 1) The LOM contents were 7.98% Nitrogen (N), 99.5ppm Phosphor (P), and 1.70 me (100g) -1 Kalium (K) ; 2) Application of LOM increased the LAI, RGR, and Fresh weight of Amaranth; 3) The concentration of LOM on 24 ml L-1, produced 11.8485 cm2g-1 of LAI, 0.08975 g cm2 day -1 of NAR, 0.927 g g-1 day -1 of RGR, and 21.675 g of fresh weight of Amaranth at Â 30 days after transplanting with total nutrients absorbed 2.855% N, 522.26 ppm P, and 25.13 me (100)-1K.Â Keywords: amaranth, liquid organic, rumen substance fermentation

Kombinasi Varietas Kentang Generasi Satu (Gi) dengan Jarak Tanam terhadap Pertumbuhan dan Hasil Kentang (Solanum tuberosum L.) Combination of Basic Seed of Potato With Planting Scale on Growth and Production of Potato (Solanum tuberosum L.) Laurensius Lehar
JURNAL PANGAN Vol. 21 No. 2 (2012): PANGAN
Publisher : Perum BULOG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33964/jp.v21i2.120

Bibitkentang generasi satu (Gi) atau basic seedBmerupakan keturunan dari umbi yang dihasilkan oleh mother planet atau generasi nol (Go). Bibit generasi satu (Gi) mempunyai keunggulan, yaitu bebas dari hama dan penyakit. Penggunaan bibit yang bebas hama dan penyakit, pengaturan jarak tanam dan pemilihan varietas merupakan tiga faktor yang menentukan keberhasilan produksi dalam budidaya kentang. Tujuan percobaan adalah untuk mendapatkan jarak tanam yang sesuai pada tiga varietas kentang. Percobaan menggunakan Rancangan Acak Kelompok (RAK) faktorial dengan menggunakan dua faktor yaitu faktor pertama varietas dan faktor kedua jarak tanam. Hasil percobaan menunjukkan bahwa Varietas Desiree pada jarak tanam 10 cm x20 cm dan 20 cm x20 cm menghasilkan jumlah daun tertinggi. Verietas Desiree pada jarak tanam 20 cm x 20 cm menghasilkan jumlah umbi gradeA(2-10 g) terbanyak. Varietas Atlantik dan varietas Desiree menghasilkan tinggi tanaman tertinggi. Varietas Desiree menghasilakn jumlah umbi per tanaman dan per petak, serta berat umbi segar pertanaman tertinggi. Jarak tanam 10cm x 20 cm menghasilkan jumlah umbi per petak, dan berat umbi segar perpetak tertinggi. Jarak tanam 20cm x20cm menghasilkan berat umbi segar pertanaman tertinggi. Varietas Desiree memiliki pertumbuhan tanaman dan hasil panen yang lebih baik dibandingkan dengan varietas Atlantik dan varietas Granola.The basic seedofpotato (Gi) isa variety ofpotato produced by the mother planet or the zero generation (GO). The advantage ofthis basic seed or the first generation seed (Gi) is its disease-resistance. The use of disease-resistance seed, arrangement of planting distance andchoice varieties are the three factors that determine the success of potato production. The aim of this research is to obtain suitable planting distance on three different varieties ofpotatoes namely Desiree, Atlantic and Granola. The experiment applies Random Sampling Groups (RSG) factors using two factors namely: variety as the first factor and planting scale as the second factor. The result shows that Desiree variety atplanting distances of 10cmx 20 cmand 20 cmx 20 cmproduces the highest number of leaves whereas the Desiree variety at planting scale of20cm x 20cm produces the highest number oftubers (2-10 g). Both Atlantic variety ofpotatoes and Desiree variety produced the highest height ofplants. Desiree variety produces the highest grade and number oftubers on each plant and slot. Planting scale of 10 cm x 20 cm results in the highest production of the number and grade offresh tubers on each slot. Meanwhile, planting scale of20 cm x 20 cm produces the highest grade offresh tuber per plant. However, Desiree variety has better production and growth compared to those ofAtlantic and Granola varieties,

APLIKASI PUPUK ORGANIK DAN Trichoderma sp TERHADAP HASIL TANAMAN KENTANG (Solanum tuberosum L.) DI DATARAN TINGGI Laurensius Lehar; Maria Klara Salli; Heny M.C. Sine
Jurnal Ilmiah Hijau Cendekia Vol 3 No 2 (2018): Jurnal Ilmiah Hijau Cendekia
Publisher : Universitas Islam Kadiri

Ndua Ria Village in the District of Kelimutu Flores is located in a highlands and is one of a central production of vegetables. The cultivation of the potato in the highlands is not optimal; it is because of the farmers which are not able to meet the needs of production facilities, such as potato seeds, fertilizer, insecticide and water in the dry season. Fertilizers and insecticides are too expensive, due to Indonesia's economy which is uncertain it gives the impact on the inability of farmers' purchasing power so that many farmers cannot grow potatoes. In an effort to reducing production costs, especially fertilizer and insecticides in this study it will be tested four kinds of organic fertilizers and trichoderma sp. The research objective is to get the type of organic fertilizer which is capable of interacting with Trichoderma sp in the control Phythopthora infestans, Yellow cyst nematode (PCN) as well as inorganic fungicide, thereby reducing production costs and get the right kind of organic fertilizer and inexpensive but provide optimal is very important. The results showed that organic fertilizer of chicken manure is able to interact with trichoderma, sp in controlling phythopthora infestans and PCN so that it can provide the optimum results against potato yield components, the grade of (6,35), weights (9,50) kg, grade of 10-30g (126.67) g, for grade 30-60 g (236.67) g and grade of > 60g (1422.67) g. For the growth and yield of potato in the plateau area it is recommended to give the optimal use of chicken manure and Trichoderma sp.

Pertumbuhan dan Produktivitas Tanaman Kedelai diantara Beberapa Varietas Jagung Hibrida dengan Jarak Tanam Berbeda Laurensius Lehar
Buletin Loupe Vol 15 No 02 (2019): Edisi Desember 2019
Publisher : Jurusan Teknologi Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Penelitian ini bertujuan untuk mengetahui pengaruh pertumbuhan dan produksi kedelai yang ditanam diantara beberapa varietas jagung hibrida dengan jarak tanaman berbeda. Rancangan penelitian menggunakan Split Plot Desain (RPT), sebagai petak utama jarak tanam kedelai 30 cm x 15 cm dengan jumlah kedelai 5 baris (180 cm) dan jumlah kedelai 7 baris (240cm). Sedangkan sebagai anak petak yaitu verietas jagung hibrida yaitu Pioneer 35, Bima 19, JH 27, Bima 2 dan Nasa 29, yang ditanam dengan jarak tanam 60 cm x 12,5 cm. Sehingga terdapat 10 kombinasi perlakuan, kemudian diulang sebanyak 3 kali. Hasil penelitian terhadap komponen pertumbuhan tanaman yaitu Tinggi tanaman kedelai menunjukkan bahwa kedelai ditanam diantara jagung hibrida varietas JH 27 (112,15 cm) dan Bima 2 (107,85 cm) tertinggi dibanding kedelai ditanam diantara varietas jagung yang lainnya. Variabel pengamatan terhadap komponen hasil menunjukkan bahwa jumlah polong per tanaman dan jumlah polong isi tertinggi pada perlakuan kedelai ditanam diantara varietas jagung hibrida JH 27 jarak tanam 7 baris masing-masing 46,64 polong dan 44,53 polong. Sedangkan jumlah biji per tanaman dan jumlah biji isi per tanaman tertinggi pada perlakuan kedelai ditanam diantara jagung hibrida varietas Bima 2 dan Nasa 29 dengan jarak tanam 7 baris masing-masing 73,33 biji, 71,14 biji dan 71,64 biji, 69,61 biji. Bobot 100 butir tertinggi pada perlakuan kedelai ditanam diantara jagung hibrida varietas Pioner 35 (14,70 g), Bima 2 (14,67 g) dan Nasa 29 (14,42 g). kedelai ditanam diantara varietas jagung hibrida Bima 2, JH 27 dan Nasa 29 nyata berpengaruh terhadap produksi dan berpengaruh nyata terhadap kedelai ditanam diantara jagung hibrida varietas Bima 19 dan Pioner 35.

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