Aplikasi PGPR (Plant Growth Promoting Rhizobacteria) dan Membran Bionanomaterials pada Perkecambahan Padi sebagai Peluang Agroforestri di Lahan Gambut

Abstract

Laju degradasi lahan gambut di Indonesia yang semakin tinggi mengakibatkan produktivitas lahan semakin menurun. Hal tersebut berdampak pada pentingnya upaya optimalisasi lahan, salah satunya melalui pengembangan sistem agroforestri, serta pemilihan jenis tanaman adaptif. Padi Dendang merupakan salah satu varietas padi adaptif di lahan gambut. Penelitian ini bertujuan menganalisis sifat tanah gambut yang dimanfaatkan untuk agroforestri, dan pengaruhnya terhadap perkecambahan padi Dendang dengan aplikasi PGPR serta membran bionanomaterials melalui uji in vitro dan in vivo. Analisis data yang digunakan adalah RAL faktorial dua faktor, yakni satu dosis PGPR, dan bionanomaterials (BNMs) yaitu tandan kosong kelapa sawit aktivasi (TA) dan non-aktivasi (TN), serta batang kelapa sawit non-aktivasi (BN) dan lignoselulosa (BL) dengan masing-masing 3 konsentrasi (1%, 3%, dan 5%). Hasil penelitian menunjukkan bahwa pH tanah gambut sangat masam (3,60). Aplikasi PGPR dan BNMs mampu meningkatkan pH, N, P, K, Na, Ca, Mg, dan menurunkan kandungan Al. Pada uji in vitro, aplikasi PGPR berpengaruh nyata terhadap persen hidup, sedangkan BNMs berpengaruh sangat nyata pada kecambah normal dan abnormal, persen hidup, serta tinggi kecambah. Pada uji in vivo PGPR berpengaruh sangat nyata terhadap persen hidup benih dan tinggi kecambah, sedangkan BNMs berpengaruh sangat nyata terhadap daya kecambah dan potensi tumbuh maksimum.

The rate of peatland degradation in Indonesia is getting higher, resulting in lower land productivity. This has an impact on the importance of land optimization efforts, one of which is through the development of agroforestry systems, as well as the selection of adaptive plant species. Dendang rice is one of the adaptive rice varieties in peatlands. This study aims to analyze the properties of peat soil used for agroforestry, and its effect on the germination of Dendang rice with the application of PGPR and membrane bionanomaterials in vitro and in vivo tests. The data analysis used was two-factor factorial RAL, namely one dose of PGPR, and bionanomaterials (BNMs) of namely activated (TA) and non-activated (TN) oil palm empty bunches, and non-activated oil palm trunks (BN). and lignocellulose (BL) with 3 concentrations (1%, 3%, and 5%), respectively. The results showed that the pH of the peat soil was very acidic (3.60). The application of PGPR and BNMs was able to increase pH, N, P, K, Na, Ca, Mg, and decrease Al content. In the in vitro test, PGPR application had a significant effect on the survival rate, while BNMs had a very significant effect on normal and abnormal sprouts, percent survival, and sprout height. In the in vivo test, PGPR had a very significant effect on the percentage of seed survival and germination height, while BNMs had a very significant effect on germination and maximum growth potential.