Judul: Pengetahuan, Sikap, dan Tindakan Petani Sayuran dalam Penggunaan Pestisida di Kecamatan Batur, Kabupaten Banjarnegara
Abstrak: The use of pesticides in vegetables is done intensively. One strategy in order to reduce the use of pesticides is by implementation of the concept of Integrated Pest Management (IPM) which it has been introduced by government through the Integrated Pest Management Field School (IPMFS). This study aimed to identify differences in knowledges, attitudes, and practices IPMFS and non IPMFS farmers in the use of pesticides, as well as the relation to the characteristics of the farmers. The research data obtained directly by interviews using a structured questionnaire in seven villages in District of Batur, with 105 IPMFS farmers and 105 non IPMFS farmers from February to April 2013. The data was then analyzed using the Mann-Whitney test and chi-square. The results show that there is a difference between knowledges, attitudes, and practices at IPMFS and non- IPMFS farmers, and have relationship with each other. Knowledges and attitudes of non IPMFS farmers, as well as the attitudes of IPMFS farmers have a relationship with the farmer education, while practices IPMFS farmers have a relationship with the land ownership status and total income
Keyword: non IPMFS, IPM, IPMS

Judul: Pengetahuan, Sikap, dan Tindakan Petani Sayuran dalam Penggunaan Pestisida di Kabupaten Pandeglang, Banten.
Abstrak: Pesticide is common techniques used by farmers to control plant pests and diseases. Improper and excessive uses of pesticides often occur in pesticide application due to low farmer’s knowledge and skill. The aim of this study was to obtain information and analyze of the knowledge, attitude, and practice of vegetable farmers in pesticide use in Pandeglang Regency, Banten. This study has been conducted by using direct survey using structured questionnaires to obtain a primary data, while secondary data was obtained from local government and literature study. The survey location was determined by purposive sampling. The number of respondents were 150 vegetables farmers. The data was presented descriptively and analyzed using the χ2 (chi-square) test to analyze the relationship between each characteristic tested. Knowledge, attitude, and practices of vegetable farmers in Jiput, Pulosari, and Menes districts showed some differences. Generally, the farmers at Pulosari district have low rational attitude in the use of pesticides compared with two other districts. Many factors influence the knowledge, attitude, and practices of vegetable farmers in three districts in the use of pesticides. Based on the analysis and relationship tests, factors of age and income of farmers showed influence unsignificantly compared with two other variables such as education and participation of farmers in farmer groups.
Keyword: knowledge, pesticides types, plant pests and diseases, vegetable farmer

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
Keyword: