Durian (Duriozibethinus) is an exotic fruit with relatively advanced varietal improvement prospects. Indonesia is one of the countries with high durian diversity, one of which is located in Banten Province. This study aims to determine the diversity and relationships of several local durians in Pandeglang and Lebak Regencies of Banten Province based on the morphological characters of leaves, flowers, and fruit. The durian samples were obtained by purposive sampling and interview methods. The morphological characterization was carried out according to the guidelines of the “Bioversity International” including the description of stems, leaves, flowers, fruits, and seeds. After the characterization, scoring, standardization, and similarity index (IS) were calculated between samples. Cluster analysis was carried out using Cluster Observation with Ntsys 2.0 software. The analysis was conducted on 50 characters in 20 local durian accessions. The results showed that the clustering analysis was divided into three clusters with a similarity coefficient of 0.64. Group I consisted of SangkanWangi 2. Group II consisted of Hauk, Ketan Jaya, Grinsing, Sikucing, Kadu Katung, Jangkung, Sibening, Siradio, Siceer, Sipedang, Sikempong, Sicayut, and Sijabrig. Meanwhile, Group III consisted of Siemas, Baranjang, Kaduhejo, Kadukuning, Sangkan Wangi 1, and Sibening.

Student learning activities can be measured by how active students are while studying. A student-centered learning model is needed, especially for courses with no practicum, such as legum technology material, to make the classroom atmosphere more varied. Therefore, this study aims to increase student learning activities using a problem-based learning model in legum technology lecture materials. This research is a class action study conducted in 2 cycles, each consisting of 2 meetings. The research subject comprised 20 students majoring in Agricultural Industrial Technology, Agro-industrial Study Program. The data collection techniques include preserving student learning activities using a problem-based learning model. The results showed that the students learning activity increased with an average per cycle in cycle I of 2.14 and was included in the "sufficient" category with the description of group C, and on average in cycle II increased with the achievement of 2.85 and has been included in the "good" category. This research shows that the problem-based learning model has been proven to improve student learning activities in the classroom. In addition, this research also demonstrates that classroom action research can be carried out in elementary, middle, and high schools and at the college level.

The purpose of this research is to know the botanical and morphology of any weeds that attack the rubber plant and weed control doneAt Balai Pengawasan And Sertifikasi Benih Perkebunan. The method used is descriptive method with data collection techniques through observation, interview and documentation. Based on the observation it can be seen that the weeds that attack the rubber plant in the Plantation Monitoring and Certification Seed in morphology are weeds, including the broad-leaved plant species and the puzzles such as jukut pahit (Axonopus compressus), Ara Sungsang (Asystasia ganggetica L), Senduduk (Melastoma malabratichum), Babadotan (Ageratum conyzoides), Imperata cylindrica, Putri Malu (Mimosa pudica), Meniran (Phyllanthus niruri), Jukut Pendul (Kyllinga brevifolia). By way of control is done spraying using Gramoxone contact herbicide with a dose of ± 28 ml per 1 tank hands sprayer solo contents of 14 liters of  water for to the field of weeds attacked rubber plantation. At the  Plantation Regulatory Monitoring and Certification Center for 0.5 hectares of land required 252 ml herbicide. Anddoneint spraying when the weather is sunny.

The purpose of this research was to assess effect of compost treatment from various local organic materials combined with agro-industrial waste to improved chemical quality of acid sulfate mineral soils, to compare of root dry weight and grain weight milled dryness of Inpara-3. This research was conducted at screen house of Polytechnic Hasnur, Barito Kuala District, South Kalimantan from November 2020 to June 2021. This study used Compeletely Randomized Design (CRD) with Tukey's Honestly Significant Difference (HSD) test a=5%. There were 7 treatments used as, K0 = control. JKD = paddy straw compost 4 t ha-1 and solid decanter 2 t ha-1; JKR = paddy straw compost 4 t ha-1 and solid crumb rubber 2 t ha-1; SKD = empty fruit bunch compost 4 t ha-1 and solid decanter 2 t ha-1; SKR = empty fruit bunch compost 4 t ha-1 and solid crumb rubber 2 t ha-1; PKD = compost of purun tikus (Eleocharis dulcis) 4 t ha-1 and solid decanter 2 t ha-1; PKR = compost of purun tikus 4 t ha-1 and LPKR 2 t ha-1. The treatment was 5 replication so that 35 experimental plant units. The results showed compost paddy straw combinated solid decanter reducing concentration of soluble Fe and Al and can increasing availability of P and K. Treatment of compost empty fruit bunch combinated solid decanter can be increasing pH and total N-mineral. Compost paddy straw combinated solid crumb rubber gave increasing weight on root dry and grain milled dryness.   Keywords: acid sulfate soil; agroindustrial wasted; compost

Palm kernel meal or often referred to as (BIS) is one of the byproducts of processed palm oil in the manufacture of palm oil. The content of palm kernel cake (BIS) has fiber similar to the content in grass. Among other things containing less than 10% water, 14-17% protein, 9.5-10.5% fat and crude fiber 12-18%. Nutrition factions are cellulose, fat, protein, arabinoxilan, glucoronoxilan, and minerals. This material can be obtained by chemical processes or by mechanical means. So far, palm kernel cake (BIS) is widely used as animal feed because of the high protein contained therein, so it is very rarely used as a planting medium. This study aims to find the right composition in a mixture of palm kernel cake (BIS) which is good as a medium for planting a mixture of palm kernel cake (BIS) with mineral soil. In this study, the tomato nucleus (BIS) mixed tomato planting media had 4 treatments namely A0: without giving palm kernel cake (BIS), A1: 40 g palm kernel cake (BIS), A2: 50 g palm kernel cake (BIS), A3: 60 g palm kernel cake (BIS). The parameters measured were plant height growth and leaf blade growth based on the results of the study obtained, palm kernel cake has the potential to be one of the ingredients in making planting media. Keywords: Palm kernel cake (BIS), land application, tomato.