The application of natural mineral and organic fertilizers
can increase soil productivity. The work was carried out on Vertisols under the
sugarcane crop. The research aimed to assess the effect of dolomitic limestone
on some physical-chemical properties and the yield of sugar cane in a Vertisol.
An experiment was conducted with dolomitic limestone levels and combinations of
organic fertilizers (compost, sugarcane filter cake) and fertilizers (NPK). The
design used was stripe blocks. The soil analysis data used at depths of 0-20
and 20-40 cm were at 8, 19 and 36 months after the treatments were applied. The
following indicators were evaluated: structure factor, permeability,
water-stable aggregates, plasticity, T value, and exchangeable cations.
Dolomitic limestone and its combinations with organic fertilizers showed
significant positive effects on soil structure and consistency, both in the
surface layer and in the subsoil, with residual impact over time up to 36
months. The results obtained showed a change in the category of structural
indicators from regular to excellent (permeability 1.50-2.40) and from
plasticity to moderately plastic (Plasticity index 36.64 -13.72). The results
demonstrated that the structure and stability indicators under study conditions
reached positive and significant correlations (R2 0.70) with the sugarcane
yield in t ha-1 even 36 months after planting the crop, which confirms the
residual effect of the treatments.
Author(s) Details:
Pedro Cairo Cairo,
Universidad de Atacama, Centro Regional de Investigación y
Desarrollo Sustentable (CRIDESAT), Copiapó-1532000, Chile.
Bladimir Diaz Martin,
Universidad
de Atacama, Centro Regional de Investigación y Desarrollo Sustentable
(CRIDESAT), Copiapó-1532000, Chile.
Please see the link here: https://stm.bookpi.org/RACAS-V3/article/view/13264
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