Search

Limestone needs to react with water to correct the soil acidity. Therefore, it is expected that soil water availability interferes with limestone reaction time. The objectives of the study were (1) verify whether soil water availability alters limestone reaction time and (2) to evaluate whether the period of less than 60 days between limestone incorporation and sowing is sufficient to correct soil acidity. Two trials were carried out in a greenhouse, in a completely randomized design, in a factorial scheme. In the first trial, the BRS RB331 Ipyporã grass was grown, and the soil was subjected to the combination between the number of times the soil was raised to the maximum water retention capacity (1, 2, 3 and 9 irrigation) and two base saturation (50% and 60%). In the second trial, the Panicum maximum cv. Mombasa was grown, and six treatments were adopted in a 3 × 2 factorial scheme, consisting of the combination of three levels of water availability (50%, 75% and 100% from maximum water-holding capacity) and two limestone reaction periods (30 and 60 days). Soil water availability significantly influenced the limestone reaction time. As a result, it is possible to implant Mombasa and BRS Ipyporã grasses after 30 days of limestone incorporation, provided that the water saturation in the soil is increased to 75%. [ABSTRACT FROM AUTHOR]

Copyright of Agricultural Research in the Tropics / Pesquisa Agropecuária Tropical is the property of Pesquisa Agropecuaria Tropical and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)