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Nutrient uptake,maximum yield production,and economic return of maize under deficit irrigation with biochar and inorganic fertiliser amendments

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Biochar 2019年第4期1卷 375-388页

作者： Oluwaseun Temitope Faloye Ayodele Ebenezer Ajayi michael olarewaju alatise Babatunde Sunday Ewulo Rainer Horn Department of Agricultural and Environmental Engineering Federal University of TechnologyAkureNigeria Department of Agricultural and Food Engineering Afe Babalola UniversityAdo EkitiNigeria Department of Crop Soil and Pest ManagementFederal University of TechnologyAkureNigeria Institute for Plant Nutrition and Soil Science CAU KielHermann Rodewaldstr.224118 KielGermany

The individual and combined effects of biochar(B)and inorganic fertiliser(F)have all been widely proofed to improve soil fertility and enhance crop growth and yield under irrigation(I)and rain fed ***,the strength of their individual and combined effects on crop productivity has been scarcely *** addition,few studies have assessed their individual and co-application effects on economic ***,a 2-year field experiment which consisted of factorial combination of irrigation(I)[100%full irrigation(FI),80%FI and 60%FI],biochar(0 and 20 t/ha)and fertiliser(0 and 300 kg/ha)was *** to the results,irrigation was the dominant factor that influences maize grain yield,followed by inorganic fertiliser and biochar,and they were all significant in their main *** strength of interaction effects among,I,F and B on maize grain yield follow the sequence F×I>B×F>B×*** economic analysis showed that the ternary combination of B,F and I was more economical than the binary combination of B plus I,and F plus I(in that order),when compared with the standalone application of I at maximum production in the field *** addition,combined applications of biochar and fertiliser improved soil nutrients,nutrient uptake in all irrigation treatments,compared to the standalone applications of biochar or *** research is,therefore,recommended for long-term evaluation of the economic viability of integrating biochar with fertiliser under irrigation.

关键词： Biochar amendment Drip irrigation Maize grain yield Economic evaluation Optimum irrigation

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