Effects of organic soil amendments on photosynthetic traits of black pepper (Piper nigrum L.) in an alluvial soil by Sulok, Kevin Muyang Tawie, Haruna, Ahmed Osumanu, Choy, Yuen Khew, Pei, Sing Lai, Zehnder, Jarroop Augustine Mercer, Wasli, Mohd Effendi

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Chemical and biological characteristics of organic amendments produced from selected agro-wastes with potential for sustaining soil health: a laboratory assessment by Sulok, Kevin Muyang Tawie, Ahmed, Osumanu Haruna, Choy, Yuen Khew, Zehnder, Jarroop Augustine Mercer, Jalloh, Mohamadu Boyie, Musah, Adiza Alhassan, Abdu, Arifin