Articles by Tumpal Siregar (1)

Cocoa (Theobroma cacao L.) Fertilization Pattern with Four Balanced Principles in Deli Serdang Regency, Indonesia

Nurdin Sitohang, Erwin M. Harahap, Chairani Hanum, Tumpal H.S. Siregar, Hasril Siregar and Siswa Panjang Hernosa

Asian Journal of Plant Sciences 22 ( 2 ): 357 - 367 , 2023

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