Salinitas pada tanaman padi dapat menurunkan pertumbuhan dan produktivitas melalui tiga mekanisme yakni cekaman ionik, cekaman osmotik, dan ketidakseimbangan unsur hara. Penambahan bahan organik sebagai amelioran dan penggunaan bibit dengan umur yang tepat merupakan suatu upaya yang dapat dilakukan untuk meningkatkan ketahanan tanaman padi yang dibudidayakan pada kondisi salin. Tujuan penelitian untuk mengkaji respon pertumbuhan tanaman padi tercekam salinitas menggunakan penambahan bahan organik pada media tanam dan perbedaan umur bibit menggunakan pendekatan analisis pertumbuhan tanaman. Penelitian dilakukan menggunakan rancangan acak lengkap dua faktor, penambahan bahan organik sebagai faktor pertama dan umur bibit padi sebagai faktor kedua. Padi diberikan cekaman salinitas meggunakan garam NaCl dengan nilai electrical conductivity sebesar 6 dS m-1. Berdasarkan hasil penelitian didapat bahwa penambahan bahan organik berpengaruh nyata terhadap warna daun padi saat berumur 4, 6, dan 8 MST serta terdapat interaksi antara penambahan bahan organik dan umur bibit terhadap biomasa tanaman dan laju pertumbuhan tanaman. Penambahan bahan organik berupa pupuk kandag sapi, azolla pinnata, dan kompos jerami mampu meningkatkan warna daun padi menjadi lebih hijau sedangkan interaksi pupuk kotoran sapi dengan umur bibit 21 HSS pada padi menghasilkan biomasa tanaman dan laju pertumbuhan tanaman tertinggi dibandingkan interaksi lainnya.

Production of fresh pineapple fruit is dominated by the MD2 clone, while the GP3 clone is used as canned fruit. To be promoted as fresh fruit, the GP3 has some defects, namely a less sweet taste and sensitivity to internal browning (IB) disorders. The clones need fruit coatings, and the two might get responded differently. This study aimed to study the effects of chitosan-based fruit coating mixed with palm stearin and Aloe vera gel on the fruit qualities of the two clones, as well as to seek the potential of the GP3 clone as a fresh fruit. The study used 2 x 4 factorials. The first factor was two clones (GP3 and MD2). The second factor was fruit coatings (control, chitosan, palm stearin + chitosan, and Aloe vera gel + chitosan). The fruits were stored at 7 °C. The results showed that the GP3 started to show the incidence of IB disorders on the 21st day, 2 weeks earlier than the MD2. The MD2 showed a °Brix of 16.82% and vitamin C of 391.45 mg/L, which were significantly higher than the GP3. Meanwhile, the GP3 showed 0.60% acidity, which was significantly higher than the MD2. These indicated that the GP3 should not be used for fresh fruit consumption, mainly because of its sensitivity to IB and lower sweetness compared to the MD2 clone. The chitosan treatment, which was added with Aloe vera or palm stearin, showed a higher vitamin C value than the other treatments.