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Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage system

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Academic year: 2019

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Figure 1. Average monthly rainfall and air temperatures over the experimental period, and historical precipitation from  1979 to 2009
Figure 2. Wheat (A) and corn (B) grain yields as a function  of N doses, in a 17-year no-tillage system (NTS), and in  a NTS with occasional soil tillage (OST), with liming  (L1), and without (L0) liming
Figure 4. Effects of occasional soil tillage (OST) and  continuous no-tillage system (NTS) with liming (L1),  and without liming (L0), on pH (CaCl 2 ) values (a) e Ca 2+

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