Your advice is sought to improve the nitrogen content of the soil to be used for cultivation of a non leguminous terrestrial crop (a) Recommend two microbes that enrich the soil with nitrogen (b) why do leguminous crops not requirre such enrichment of the soil ?

Your advice is sought to improve the nitrogen content of the soil to b

1.	Your advice is sought to improve the nitrogen content of the soil to be used for cultivation of a non leguminous terrestrial crop (a) Recommend two microbes that enrich the soil with nitrogen (b) why do leguminous crops not requirre such enrichment of the soil ?
Answer» (a) Rhiobium Anabaena andazotobacter (b) Because they can fix the atomospheric nitrogen Rhizobioum is a bacteria that lives in the roots of these plants .It converts the nitrogen in to the form that can be absorbed by the plant

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(i) Arrange the following compounds in an increasing order of basic strength : `C_(6)H_(5)NH_(2), C_(6)H_(5)N(CN_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2)` (ii) Arrange the following compounds in a decreasing order of `pK_(b)` values: `C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2) NH and C_(6)H_(5)NH_(2)`
Rerrange the following in an increasing order of their basic strengths: `C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(6)H_(5))_(2)` NH and `CH_(3)NH_(2)`.
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Your advice is sought to improve the nitrogen content of the soil to be used for cultivation of a non leguminous terrestrial crop (a) Recommend two microbes that enrich the soil with nitrogen (b) why do leguminous crops not requirre such enrichment of the soil ?

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