| Full text | |
| Author(s): |
da Costa, Claudio H. M.
[1, 2]
;
Carmeis Filho, Antonio C. A.
[1]
;
Crusciol, Carlos A. C.
[1]
;
Soratto, Rogerio P.
[1]
;
Guimaraes, Tiara M.
[1]
Total Authors: 5
|
| Affiliation: | [1] Sao Paulo State Univ FCA UNESP, Coll Agr Sci, Dept Crop Sci, POB 237, BR-18610307 Botucatu, SP - Brazil
[2] Fed Univ Goias UFG, Special Acad Unit Agr Sci, BR-75801615 Jatai, Go - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | CROP & PASTURE SCIENCE; v. 69, n. 5, p. 488-505, 2018. |
| Web of Science Citations: | 0 |
| Abstract | |
In tropical conservation agricultural systems, crop yield is limited by soil acidity and root-growth inhibition, especially under intensive crop rotation. This study evaluated the effect of surface applications of lime and phosphogypsum in improving soil fertility and crop yield in a tropical region. Four treatments were evaluated: control (without soil amendment); and application phosphogypsum (2.1 + 2.1 + 2.1 Mg ha(-1)), lime (2.7+ 2.0 + 2.0 Mg ha(-1)), and a combination of lime and phosphogypsum at the given rates, applied in 2002, 2004 and 2010, respectively. We evaluated the soil chemical properties, root development, plant nutrition, yield components and grain yield of 10 crops over 4 years using five species: maize (Zea mays), crambe (Crambe abyssinica), cowpea (Vigna unguiculata), wheat (Triticum aestivum) and common bean (Phaseolus vulgaris). Our long-term results demonstrate the benefits of surface liming in alleviating subsoil acidity, reducing Al3- toxicity, improving availability of Ca2+ and Me2+, and increasing accumulation of soil organic matter in all soil profiles at depths up to 0.60 m. For maize and crambe, adding phosphogypsum increased development of plants and reproductive structures, which increased grain yield. Phosphogypsum exhibited synergistic effects in association with lime for maize and common bean. Phosphogypsum did not have an effect on cowpea and wheat, whereas surface liming was essential to improve plant nutrition, grain yield and wheat grain quality. The combination of both soil amendments is an important tool to reduce the soil acidification process, resulting in the highest levels of Ca2+ and Mg2+ and the highest base-saturation values in the topsoil layers (0-0.20 m) over time. Our long-term results showed the viability of surface liming plus phosphogypsum for improving tropical soil fertility, which can reflect an increase in grain yield and contribute to the sustainability of agricultural systems under intensive land use in highly weathered areas. (AU) | |
| FAPESP's process: | 13/03683-1 - Soil chemical modifications and organic matter as affected by lime and phosphogypsum surface application in the succession corn / crambe / cowpea under no tillage system |
| Grantee: | Carlos Alexandre Costa Crusciol |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 11/10493-9 - SOIL CHEMICAL MODIFICATIONS AND ORGANIC MATTER AS AFFECTED BY LIME AND PHOSPHOGYPSUM SURFACE APPLICATION IN THE SUCCESSION CORN/CRAMBE/COWPEA UNDER NO TILLAGE SYSTEM |
| Grantee: | Claudio Hideo Martins da Costa |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 14/16712-2 - Physical fraction of soil organic matter and HUMIFIED compounds as a function lime and phosphogypsum surface application in a long-term experiment under no-tillage system |
| Grantee: | Antonio Carlos de Almeida Carmeis Filho |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 13/18462-0 - Changes in Soil Physical Properties and Soil Organic Matter as affected by lime and gypsum surface application in succession wheat/bean in long-term experiment. |
| Grantee: | Antonio Carlos de Almeida Carmeis Filho |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 13/06733-0 - Organic matter as affected by lime and phosphogypsum surface application in the succession corn/crambe/cowpea under no-tillage system |
| Grantee: | Claudio Hideo Martins da Costa |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |