The clonal invasion of Wedelia trilobata (L.) Hitch has spread to edges of mangrove areas, which leads to the formation of flooding-stressed areas such as waterlogged and submergence. This study purpose to investigate the clonal integration mechanism of W. trilobata in stress of flooding type combination. This study was conducted in greenhouse with four combinations of flooding treatment on mother ramet (MR) and daughter ramet (DR) for 25 days. Several parameters were measured are shoot growth, relative growth rate (RGR), biomass, biomass allocation, adventitious root growth, and lenticel hypertrophy. The highest clonal performance was observed for the combination of field capacity (MR)- waterlogged (DR). The lowest performance was observed for the combination of waterlogged (MR)-submergence (DR). There were decreases in the shoot growth, RGR, and biomass allocation in mother ramet. However, adventitious root growth and lenticel hypertrophic increased in daughter ramet. The increase of flooding pressure suppresses the performance of clonal plants. Clonal integration buffered clonal plants by improving the performance of daughter ramet in the combination of flooding type. The clonal integration has facilitated W. trilobata invasion in inundated areas.

Mycorhiza and Rhizobium were potensial soil nutrient-enriched organisms. This research was purposed tostudy effect of Mycorrhiza and Rhizobium inoculation in increasing the productivity of sand soil for the growth ofsoybean crops. This research arranged with four treatments: without inoculation(Po), with rhizobium inoculation(Pr), with micorrhiza inoculation (Pm), with micorrhiza-rhizobium inoculation (Pmr). The data that was analysed byANAVA and DMRT at 5% level test. The result of study showed that the productivity of the sand soil could beincreased with mikorhiza and rhizobium inoculation indicated by increasing of soybean growth.

Cabai rawit (Capsicum frutescens L.) merupakan salah satu tanaman yang memiliki nilai ekonomi tinggi dan daya adaptasi yang cukup luas. Curah hujan tinggi di Indonesia mengakibatkan lahan tergenang sehingga mengancam produktivitas tanaman, salah satunya cabai rawit. Tujuan penelitian ini untuk mengetahui respon dan toleransi tanaman cabai rawit (C. frutescens L.) varietas Pelita F1 terhadap penggenangan. Perlakuan terdiri dari kontrol (kapasitas lapang) dan perlakuan penggenangan selama 24 jam. Perlakuan menggunakan 2 atau 3 ulangan. Desain penelitian menggunakan RAL dan analisis data menggunakan ANOVA dan uji lanjut LSD taraf signifikan 5%. Hasil penelitian menunjukkan terjadi penurunan persentase layu, kerusakan ujung akar, penurunan kandungan klorofil a, klorofil b, klorofil total dan karotenoid setelah penggenangan. Tanaman terlihat segar, jumlah daun dipertahankan, terjadi pertumbuhan akar, peningkatan kandungan pigmen fotosintesis, tinggi tanaman dan berat kering pada akhir fase pemulihan. Terjadinya pertumbuhan diakhir fase pemulihan menunjukkan cabai varietas Pelita F1 toleran terhadap penggenangan 24 jam. Kemampuan tanaman dalam memperbaiki sistem perakaran, mempertahankan jumlah daun dan meningkatkan kandungan pigmen fotosintesis merupakan faktor penting dalam toleransi tanaman terhadap penggenangan.

Caisim (Brassica juncea L.) is one of vegetable commodities that has a high commercial value. Many people like it because it has a good taste and it contains several kinds of vitamin and mineral that good for health. This research aims to know the influence of liquid bio organic fertilizer and inorganic fertilizer addition to post harvest product caisim leaf and know the best combination of fertilizer for post harvest product caisim leafquality. Data analysis used is Analysis of Variance (ANOVA) and then continued by test significant different used Duncan Multiple Range Test (DMRT) 95%. The caisim plant that have been harvested then being observed on its fiber content, water content, and physical appearance. The result showed thatthe addition of liquid bio organic fertilizer and inorganic fertilizer has not influence for water content and physical appearance of caisim leaf, but it has an influence on fiber content. Treatment with basic media with the addition of 1 mL + 2,17 g NPK is the best treatment to increase fiber content of caisim leaf Tosakan variety.   Keywords: liquid bio organic fertilizer, caisim, quality of post harvest product