Pengaruh Pupuk Hayati dan Briket Amelioran terhadap Bakteri Penambat N, N-Total, Serapan N, dan Bobot Kering Padi pada Tanah Salin
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Abstract
Cekaman salinitas merupakan faktor penghambat dalam pertumbuhan tanaman padi pada tanah salin. Pupuk hayati yang mengandung bakteri Klebsiella pneumoniae dan Pseudomonas stutzeri dapat mengurangi dampak cekaman salinitas pada tanaman padi. Selain itu, pemberian briket amelioran juga mampu meningkatkan kualitas tanah salin sehingga tanaman dapat tumbuh dengan optimal. Penelitian ini bertujuan untuk mengetahui pengaruh kombinasi pupuk hayati dan briket amelioran dalam meningkatkan populasi bakteri penambat N, N-total tanah, serapan N, dan bobot kering padi pada tanah salin. Percobaan ini dilakukan di Rumah Kaca Kebun Percobaan Ciparanje, Fakultas Pertanian, Universitas Padjadjaran dari bulan Oktober 2022 sampai Juni 2023. Percobaan ini menggunakan Rancangan Acak Kelompok dengan 12 kombinasi perlakuan dan 3 ulangan. Perlakuan yang diaplikasikan adalah pemberian pupuk hayati, briket amelioran, dan kombinasinya pada tanah non salin, tanah dengan salinitas 4 dan 8 dS.m-1. Hasil percobaan menunjukkan bahwa pemberian pupuk hayati dan briket amelioran dapat meningkatkan populasi bakteri penambat N, N-total tanah, serapan N, dan bobot kering tanaman padi pada tanah salin. Perlakuan pupuk hayati yang dikombinasikan dengan briket amelioran pada tanah salin 4 dS.m-1 lebih baik dalam meningkatkan populasi bakteri penambat N, N-total tanah, serapan N, dan bobot kering tanaman padi dibandingkan dengan perlakuan tanpa pupuk hayati maupun briket amelioran pada tingkat salinitas yang sama. Perlakuan pupuk hayati yang dikombinasikan dengan briket amelioran pada tanah salin 8 dS.m-1 lebih baik dalam meningkatkan populasi bakteri penambat N dan N-total tanah dibandingkan dengan perlakuan tanpa pupuk hayati maupun briket amelioran pada tingkat salinitas yang sama.
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