Judul: Potensi Lampu LED (light emitting diode) sebagai Perangkap Lampu untuk Cylasformicarius Fabricius (Coleoptera: Curculionidae).
Abstrak: Cylas formicarius Fabricius (Coleoptera: Curculionidae) merupakan hama utama ubi jalar. Di Indonesia, hama ini terdapat di semua daerah penghasil ubi jalar. Serangan hama ini menyebabkan kehilangan hasil sebesar 10% hingga 80%. Serangan C. formicarius tidak hanya terjadi di lapang, namun telur dan larvanya yang berada dalam umbi dapat juga terbawa hingga ke tempat penyimpanan atau tempat penjualan (pasar). Berbagai upaya telah dilakukan untuk mengendalikan C. formicarius, diantaranya sanitasi, menanam varietas tahan, stek sehat, pembumbunan, rotasi tanaman, penggunaan insektisida, feromon seks, penggunaan cendawan entomofaga Beauveria bassiana, pelepasan imago steril dan kombinasi antara feromon seks dan cendawan Beauveria bassiana.
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Judul: Keefektifan Cendawan Metarhizium brunneum Petch terhadap Hama Ubi Jalar Cylas formicarius Fabricius (Coleoptera: Brentidae)
Abstrak: Cylas formicarius Fabr. merupakan hama utama pada ubi jalar (Ipomoea batatas) dan tersebar di seluruh dunia. Salah satu musuh alami penting hama tersebut adalah cendawan genus Metarhizium. Imago C. formicarius diberi perlakuan suspensi konidia M. brunneum pada kerapatan 0, 106, 107, 108, dan 109 konidia/ml. Sebagai pembanding digunakan cendawan Beauveria bassiana pada kerapatan yang sama. Aplikasi dilakukan dengan metode semprot terhadap serangga. Dengan kerapatan konidia 109/ml cendawan M. brunneum mampu mengakibatkan kematian C. formicarius hingga 95% pada hari ke-10 setelah perlakuan. Pada hari ke-10 diperoleh LC50 sebesar 4.2x106 konidia/ml dan LC95 sebesar 5.7x109 konidia/ml pada M. brunneum, sedangkan nilai LC50 dan LC95 B. bassiana berturut-turut sebesar 2.0x108 konidia/ml dan 4.3x1010 konidia/ml. Dengan menggunakan kerapatan konidia 109/ml, diperoleh LT50 3.73 hari dan LT95 7.82 hari (M. brunneum) dan LT50 6.00 hari dan LT95 23.16 hari (B. bassiana). Dari hasil yang diperoleh dapat disimpulkan bahwa M. brunneum efektif untuk mengendalikan C. formicarius.
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Judul: Influence of parent-child attachment and teacher-student attachment to build self esteem in progressive and conventional school advisor
Abstrak: Self esteem is one’s ability to evaluate him/herself with the award for him/herself and indicates the extent to which a person believes that he/she is capable, meaningful, successful, and worthwhile. High self esteem is characterized by self-confidence and liveliness of children in socializing with the environment. A factor that affects the process of building self esteem is the relationship between parents and children. The relationship is described by mother's sensitivity to respond to signals that the child gives. The immediate or delay respond and, right or wrong respond will affect the relationship in the long term, it is referred to as attachment. The attachment between teacher and student was also expected to influence child’s self esteem. In general, this study was aimed to analyze the influence of the parentchild attachment and teacher-student attachment in building school-age students’ self esteem. This was cross-sectional study, consisting of 5 elementary schools selected purposively recommended by Head of Department of Education in Depok City. The criteria of selected school were homogeneous and characterized as progressive and conventional schools. Thirty students’ families were selected randomly from the fourth and the fifth grade. Total sample were 150 families. Data was collected using questionnaires which is filled by student. The questionnaires are were Parental Bonding Instrument (PBI) to measure parentchild attachment, The Student – Instructor Relationship (SIRS) to measure teacher-student attachment and Self-Esteem Inventory (SEI) to measure child selfesteem. Data was edited, coded, entried into the computer, cleaning the data, and then analyzed. Data was analyzed using descriptive and inferential statistical analysis. Inferential statistical analysis used Spearman and Pearson correlation test, Chi Square, t-test, and linear regression. The result showed that most of the students had high self esteem both in conventional and progressive school’s students. In term of parent-child attachment, showed that care attachment was higher than overprotection attachment on both types of schools, but maternal overprotection attachment from conventional schools was higher than progressive schools. The result also showed that connectedness of teacher-student attachment was higher than anxiety. Spearman correlation test revealed that there were correlation between maternal care attachment and high self-esteem, also between maternal overprotection attachment and low self esteem on both type of schools. There were correlations between connectedness teacher-student attachment and high students’ self esteem, also between anxiety teacher-student attachment and low students’ self esteem on both types of schools. Overall, students’ self esteem was influenced by the attachment between teacher and student. The more anxiety between student and teacher it is likely, the lower student’s self esteem. Maternal care attachment influenced to higher self esteem of child, meanwhile the more overprotection the maternal attachment, the lower self esteem of child. Type of schools had no influence in building child’s self esteem.
Keyword: parent-child attachment, teacher-student attachment, self esteem, progressive school, and conventional school