claim: "ninety percent of the topsoil has inadequate moisture to grow crops."
author: john kasich
evidence_1: the crop was handicapped by deficient moisture in areas south of great bend  and east of dodge ... heavy plant growth made severe inroads on soil moisture,  resulting in considerable abandonment. ..... december 1 condition was 90  percent.
evidence_2: in these areas, soil moisture for plant growth is insufficient for the fullest  expression of ... interception can divert up to 30 percent of rainfall from the soil  surface. .... where soils are very shallow or physically degraded, the ability of  plants to .... they choose either short-cycle varieties (90 days for the very popular  nb100, but ...
evidence_3: feb 14, 2018 ... this soils and plant nutrients chapter from the extension gardener ... such  areas are swamps where plants grow and thrive. ... a high water table can also  restrict root growth due to poor soil aeration. ... very coarse sand, 2.00-1.00, 90,  11 ..... poorly drained soils tend to have a high percentage of organic ...
evidence_4: aug 1, 2001 ... organic matter serves as a reservoir of nutrients and water in the soil, aids in ...  as much as 90 percent of it disappears quickly because of decomposition.  organic ... however, best results are achieved if growing cover crops is ...
evidence_5: jan 6, 2012 ... a sandy soil has large pore spaces through which water will move ... there are  two basic sources of moisture for crop use: growing season precipitation and soil  stored ... a drought if rainfall during the growing season is inadequate. .... 10 to 15  percent from the third 0.3 m (1ft) and less than 10 percent from ...