In the upper-middle-income stage, the same increase in farm size corresponds to significant declines of 0.05% in machinery intensity, 0.07% in irrigation intensity, and a marginally significant 0.09% reduction in nitrogen fertilizer application (Fig. 2b ).
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Interplay of urbanization and agricultural modernization shapes nitrogen use in global croplands.
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The sentences
The results show that the coefficient for “Cropland area per agricultural laborer” is positive and highly significant.