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	1.	Using biochar and urea to improve rice production on tropical acid soils / Ahmed Osumanu Haruna, Ali Maru. by Haruna, Ahmed Osumanu, Prof. Madya, Dr Ali Maru Material type: Text; Format: print ; Literary form: Not fiction Publication details: Serdang, Selangor : Universiti Putra Malaysia Press, 2017 Availability: Items available for loan: UMK Kampus Jeli (1)Call number: S654 .H37 2017. Place hold
	2.	UTILIZING ORGANIC AMENDMENTS IN ACID SOILS FOR RICE (Oryza sativa L.) PRODUCTIVITY/ Ahmaned Osumanu Haruna, Ali Maru, Nik Muhammad Nik Ab.Majid. by Ahmad Osumanu Haruna [author. ] Ali Maru [author. ] Nik Muhammad Nik Ab.Majid [author. ] Material type: Text; Format: print ; Literary form: Not fiction Publisher: Serdang, Selangor : Universiti Putra Malaysia Press, 2021Copyright date: ©2021 Availability: Items available for loan: UMK Kampus Bachok (2)Call number: S592.57 .A36 2021, ... UMK Kampus Jeli (3)Call number: S592.57 .A36 2021, ... Place hold
	3.	Biochar and Soil Water Table Management Effects on NITROGEN AVAILABILITY/ Ahmed Osumanu Haruna, Nathaniel Maikol, Ali Maru. by Ahmed, Osumanu Haruna, Prof. Madya, Dr [author.] Ali Maru [author.] Nathaniel Maikol [author.] Material type: Text; Format: print ; Literary form: Not fiction Publisher: Serdang, Selangor : Universiti Putra Malaysia Press, 2020Copyright date: ©2020 Availability: Items available for loan: UMK Kampus Jeli (5)Call number: TP248.B55 A36 2020, ... Place hold

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