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Growth and yield of maize and cassava cultivars as affected by mycorrhizal inoculation and alley cropping regime

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Author(s): Salami Olusola Abiodun | Osonuhi Oluuolc

Journal: Journal of Agricultural Sciences
ISSN 1450-8109

Volume: 51;
Issue: 2;
Start page: 123;
Date: 2006;
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Keywords: growth | yield | maize | cassava | myeorrhizal inoculation | hedge row | pruning regime

ABSTRACT
Effect of myeorrhizal inoculation and two pruning regimes in experimental alley cropping treatments on the leaf biomass and nutrient yield of sole and mixed Gliricidica septum (a Modulating plant) ami Senna siamea (a non-nodulating plant) were investigated both in the greenhouse and in the field. The impact of the mixtures of these legumes as hedgerows on maize and one cultivar of cassava was also studied on the Held. Gliricidia sepiuni prunnings were found to have high nutrient yields, notably 358.4 kg ha-1 of N and 14.7 kg ha-1 of P as well as fast decomposition and nutrient release. In both Giricidia and Senna. there was similar leaf dry matter values in sole and mixed inoculated or non-inoculated trees for either of the pruning regime and for most of the pruning harvests, although significant differences occurred between inoculated and non-inoculated mixed or sole trees. There was no difference between the total leaf dry matter of the two- and three-month pruning regimes in G. sepium. However, in contrast to G. sepium, the total leaf dry matter of the two-month pruning regime of iS'. sianica was lower than its three-month pruning regime, except for sole non-inoculated trees. Generally, inoculation and mixing of trees in the same hedgerows significantly increased the total N and P yield in G. sepium and S. siantea with greater values in the former than the latter. In G. sephium and except for mixed inoculated trees, while total N yield in the leaf was higher in three-monthly primed than two-monthly pruned trees, the converse was the case for P. For S. siamea the total N and P yield were higher in three-monthly than two-monthly pruned trees. Myeorrhizal inoculations consistently increased the yield of the cassava root tuber and maize grain over their non-inoculated counterparts.
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