Respons Pertumbuhan Dan Produksi Tanaman Kacang Tanah (Arachis Hypogaea L.) Terhadap Pemberian Paclobutrazol Dan Pupuk Kalium

The purpose of the study was to determine the effect of paclobutrazol and potassium fertilizer onthe growth and yield of peanuts. The research was conducted at Pasar I Tanjung Sari street, Medanwith the height of 25 metres above sea level, began from May until October 2013. The research wasarranged with a randomized block design with two factors. The first factor was concentration ofpaclobutrazol ( 0 ; 75 ppm ; 150 ppm and 225 ppm ) and the second was dose of KCl ( 0; 0.15 g ;0.3 g and 0.45 g ) . The parameters observed were plant height, number of ginofor, number ofproductive branches, number of unproductive branches, days to flowering, harvesting, pod weightper sample, number of filled pods per sample, number of empty pods per sample, weight of grainper sample, weight of grain per plot and weight of 100 grains. The results showed that plant height,number of ginofor, number of productive branches, days to flowering, pod weight per sample,number of filled pods per sample, weight of grain per sample, weight of grain per plot, and weightof 100 grains were significantly affected by paclobutrazol concentration. However all parametersobserved were unsignificantly affected by dose of KCl. There was also no interaction betweenpaclobutrazol concentration and dose of KCl

Respons Pertumbuhan Tembakau Deli (Nicotiana Tabaccum (L.)) Pada Beberapa Jenis Kapur Dan Tanah Di Sumatera Utara

Response of growth of deli tobacco (Nicotiana tabaccum (L.)) on some kind of lime and soil types in North Sumatera. Deli tobacco is variety of tobacco that is used as world top quality wrapper of cigar . But, in last years production of deli tobacco had been decreasing because of land degradation. Consequently, it is important to develop deli tobacco plantation to another soil types that is combine by giving some kind of lime. The aim of this research was to examine growth of deli tobacco (Nicotiana tabaccum (L.)) on some kind of lime and soil types in Noerth Sumatera. The research was conducted in the land of the Research Center of Deli Tobacco (BPTD) Sampali PTPN II, starting from February to May 2012, using a randomized block design (RBD) factorial with two factors and three replications . The first factor is soil types (alluvial, andosol, hidromorf, ultisol). The second factor is the kind of lime (dolomite, calsit, kaptan). The results showed that soil types significantly affect on plant height, diameter of stem, number of leave, thick leaf sand, 1 foot thick leaves, long leaves sand, 1 foot long leaves, leaf width sand, and 1 foot wide leaves. Kind of Lime and the interaction between soil and lime is not significantly affect for all parameter observed

Pengaruh Media Tanam Dan Panjang Slip Bahan Tanaman Terhadap Pertumbuhan Tanaman Vetiver (Vetiveria Zizanoides (L.) Nash)

Pertumbuhan vetiver yang cepat diperlukan di lapangan agar fungsi vetiver sebagai tanaman konservasi dapat diperoleh. Penelitian ini bertujuan untuk menguji pengaruh media tanam dan panjang bahan tanaman (slip) terhadap pertumbuhan bibit tanaman vetiver (Vetiveria zizanoides (L.) Nash). Pengujian dilaksanakan dengan rancangan acak kelompok faktorial yang terdiri dari dua faktor yaitu media tanam (topsoil; topsoil+pasir; topsoil+cocopeat; topsoil+ sebuk gergaji) dan panjang anakan (10, 20, 30 cm). Parameter yang diamati adalah tinggi tanaman, jumlah anakan, panjang akar, bobot basah tajuk, bobot basah akar, dan bobot kering akar. Hasil penelitian menunjukkan bahwa perlakuan media tanam berpengaruh nyata terhadap tinggi tanaman, jumlah anakan, bobot basah tajuk dan bobot kering akar. Tinggi tanaman, jumlah anakan, bobot basah tajuk dan bobot kering akar tertinggi dijumpai pada media tanam topsoil (kontrol) diikuti oleh topsoil + pasir, topsoil + cocopeat, dan topsoil + serbuk gergaji. Panjang slip bahan tanaman yang menghasilkan pertumbuhan vetiver (tinggi, dan bobot basah tajuk) terdapat pada panjang slip 30 cm diikuti oleh panjang slip 20 cm, dan 10 cm. Interaksi antara media tanam dan panjang slip bahan tanaman berpengaruh tidak nyata terhadap semua parameter pengamatan

Producing carrot seeds for organic agriculture

This tool is a data sheet that can be used by French farmers who produce or want to produce carrot seeds in organic conditions. It provides advice starting from the contract signing to the seed drying, going through the specificities of the crop, the sowing, irrigation, specific pests and their management, and the harvest

PhenoScore quantifies phenotypic variation for rare genetic diseases by combining facial analysis with other clinical features using a machine-learning framework

Several molecular and phenotypic algorithms exist that establish genotype-phenotype correlations, including facial recognition tools. However, no unified framework that investigates both facial data and other phenotypic data directly from individuals exists. We developed PhenoScore: an open-source, artificial intelligence-based phenomics framework, combining facial recognition technology with Human Phenotype Ontology data analysis to quantify phenotypic similarity. Here we show PhenoScore's ability to recognize distinct phenotypic entities by establishing recognizable phenotypes for 37 of 40 investigated syndromes against clinical features observed in individuals with other neurodevelopmental disorders and show it is an improvement on existing approaches. PhenoScore provides predictions for individuals with variants of unknown significance and enables sophisticated genotype-phenotype studies by testing hypotheses on possible phenotypic (sub)groups. PhenoScore confirmed previously known phenotypic subgroups caused by variants in the same gene for SATB1, SETBP1 and DEAF1 and provides objective clinical evidence for two distinct ADNP-related phenotypes, already established functionally.PhenoScore is an open-source machine-learning tool that combines facial image recognition with Human Phenotype Ontology for genetic syndrome identification without genomic data, with applications to subgroup analysis and variants of unknown significance classification.Genetics of disease, diagnosis and treatmen

Contribution à l'explication de la variabilité des rendements de maïs pluvial, chez les petits producteurs du centre-ouest brésilien

Cette étude de la variabilité des rendements de maïs pluvial, chez les petits producteurs du Centre-ouest brésilien, a été menée dans le cadre d'un vaste projet CIRAD-EMBRAPA, pour une meilleure connaissance des petites exploitations familiales de la région des Cerrados. Dans cette région , le climatest de type tropical, la pluviométrie atteint en moyenne 1200 mm par an répartie sur les six mois de saison humide (octobre à avril). Les sols pour la plupart sont acides avec des taux d'aluminium échangeable élevés, ces caractéristiques rendent nécessaires, les amendement alcalins de gypse. On y rencontre deux types de système agraires: d'une part les grandes exploitations industrielles d'élevage de bovin-viande ou de production de soja, maïs, riz..., d'autre part les petites structures familiales de polyculture élevage. Ceux sont ces dernières qui font l'objet de l'étude. Celle-ci s'est déroulée dans le municipe de Silvânia, à 200 km au sud de Brásilia, chez 15 producteurs pour un total de 46 placettes de maïs pluvial. Elle a pour but de proposer une explication de la variabilité observée entre les rendements des différentes placettes. Un suivi du peuplement tout au long de la saison de culture, des enquêtes de terrain, ainsi qu'un modèle de simulation du bilan hydrique couplé à l'analyse des composantes du rendement (nombre de pieds/m2: NPS, nombre de grains par pieds: NG/NP, poids d'un grain: P1G, nombre de grain/m2: NGS), permettent d'identifier les phases durant lesquelles interviennent les limitations du rendement et par la suite d'émettre des hypothèses explicatives quant aux facteurs responsables des limitations du rendement. Les résultats du diagnostic mettent en évidence l'importance des phases de levée et de floraison pour l'établissement du rendement ainsi que la place importante du facteur eau. En revanche les adventices et les ravageurs, s'ils peuvent dans certains cas agraver l'état d'un peuplement déjà fragilisé par d'autres facteurs, paraissent dans l'ensemble jouer un rôle négligeable dans la limitation des rendements. Des facteurs comme les fertilisations, les itinéraires techniques, les caractéristiques du sol, le ruissellement... n'ont pu être directement pris en compte lors de cette étude. On peut cependant faire l'hypothèse que ces facteurs sont primordiaux pour expliquer les niveaux de rendements atteints et leur variabilité. Les prochains diagnostic sur cette zone devraient permettrent de confirmer cette hypothèse et de quantifier les effets de ces facteurs sur les rendements. (Résumé d'auteur

Antigas vivências, novos sentidos: a análise das práticas de leitura de professores de ciências em formação por meio da investigação narrativa

Este texto sintetiza algumas das reflexões que emergem de uma pesquisa de doutoramento em andamento que busca compreender os sentidos atribuídos por licenciandos do Curso de Ciências Biológicas de uma universidade brasileira às suas próprias práticas de leitura e ao seu papel como mediadores da leitura na Educação Básica, a partir do reconhecimento das especificidades da leitura de textos didáticos da área de ciências e biologia. A produção dos dados se fez a partir das narrativas dos alunos/sujeitos, numa relação de alteridade estabelecida com a professora/pesquisadora. A pesquisa reafirma a pertinência do enfoque qualitativo, nomeadamente da investigação narrativa, quando se pretende apreender a produção de enunciados, contrapalavras e silêncios que constituem os indícios para os nossos questionamentos e proposições