RESPONS PERTUMBUHAN BIBIT KENTANG (Solanum tuberosum) TERHADAP FORMULASI BIOSTIMULAN BERBASIS Trichoderma spp.
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Abstract
Aklimatisasi planlet adalah salah satu tahapan kritis dalam produksi bibit klonal kentang yang seringkali menghambat ketercukupan bahan tanaman berkualitas. Penggunaan produk berbasis Trichoderma spp. diduga dapat meningkatkan kemampuan planlet untuk menyerap unsur hara dari media tumbuh. Tujuan penelitian ini adalah untuk mengetahui formulasi biostimulan terbaik yang mengandung Trichoderma spp. yang diaplikasikan pada tahap aklimatisasi bibit kentang. Sembilan biostimulan (S1, S2, S3, S4, S5, S6, S7, S8, S9) diformulasikan menggunakan substrat pembawa organik dan masing-masing mengandung campuran tiga atau empat strain dari lima isolat Trichoderma spp. Kesembilan biostimulan tersebut kemudian diujikan pada planlet kentang varietas Atlantik siap aklimatisasi. Planlet tanpa aplikasi biostimulan digunakan sebagai kontrol (S0). Hasil percobaan ini menunjukkan bahwa dibandingkan dengan control maupun formulasi lainnya, formulasi biostimulan S8 secara signifikan meningkatkan pertumbuhan planlet kentang cv. Atlantik dilihat dari jumlah daun dan jumlah tunasnya.
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