Climate-smart soil water and nutrient management options in semiarid West Africa: a review of evidence and analysis of stone bunds and zaï techniques

Table 4 Grain and biomass production on deep, brown Eutropept soil, at Taonsogo, Burkina Faso

Treatment	1992			1993
Treatment	Kg ha^-1	±S.D.	Test¹	Kg ha^-1	± S.D.	Test¹
Grain production
Control	150	±154	a	3	±0.6	a
Pit	200	±63	a	13	±4.2	a
Pit + neem leaves	395	±151	ab	24	±7.3	a
Pit + compost²	654	±145	abc	123	±82.5	a
Pit + mineral fertilizer	1,383	±236	bc	667	±256.3	b
Pit + compost + mineral fertilizer	1,704	±305	bc	924	±346.8	b
Biomass production
Control	946	±529	a	167	± 75	a
Pit	1,329	±549	a	292	± 49	a
Pit + neem leaves	1,990	±207	ab	875	± 172	ab
Pit + compost²	2,843	±945	abc	1,417	± 511	bc
Pit + mineral fertilizer	4,839	±1,105	bc	2,375	± 706	bcd
Pit + compost + mineral fertilizer	5,333	±1,490	bc	3,250	± 857	cd

¹Tukey-Kramer test (P <0.05). a, b, c, d express statistical differences. Treatments with the same letter are not statistically different at P = 0.05.
²Compost: 3 Mg ha^-1 of a mixture of dry manure, straw and various crop residues composted during three dry months. Table adapted from Roose et al. [20].

ISSN: 2048-7010