| Journal: |
Journal of Plant Nutrition
Taylor & Francis Group, LLC
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Volume: |
44
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| Abstract: |
Various responses of plant growth attributes to the combined application of
biochar and mineral fertilizers were reported according to trial conditions.
Thus we studied the effects of biochar combined with nitrogen and
phosphorous fertilizers on crop growth and yield and NUE of maize crop
under alkali clay soil. Field trial during two successive seasons (2018 and
2019) was conducted to investigate the possibility of biochar addition (0, 6
and 12Mg ha1), as well as, P (0 and 37 kg P2O5 ha1) and N (95, 190 and
285 kg N ha1) fertilizations on maize and some nitrogen use efficiencies
attributes. The results revealed that, biochar addition at 6 or 12Mg ha1
resulted in a significant reduction in plant height, stem diameter and ear
length compared with the control treatment. In contrast, biochar applied
recorded significant increase in both leaves area per plant, grain yield and
yield attributes, as well as, grain protein content, NUE, grain-NUtE, as well
as, total-NUpE compared by control treatment. Applying 190 kg N ha1
caused significant increase in each of growth and grain yield attributes, as
well as, grain-NUtE. Biochar addition by 6 or 12Mg ha1 combined with P
(37 kg P2O5 ha1) and N (190 or 285 kg N ha1) application had the greater
effect on increasing stem diameter, ear length, almost yield attributes, NUE,
as well as, grain-NUtE. However, NUE and total-NUpE showed negative
response to biochar added with N fertilizer.
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