| Full text | |
| Author(s): |
Rosa, Ben-Hur S.
[1]
;
Fernandes, Adalton M.
[2]
;
Gazola, Bruno
[1]
;
Nunes, Jesion G. S.
[1]
;
Soratto, Rogerio P.
[3, 2]
Total Authors: 5
|
| Affiliation: | [1] Sao Paulo State Univ UNESP, Coll Agr Sci, Botucatu, SP - Brazil
[2] Sao Paulo State Univ UNESP, Ctr Trop Roots & Starches CERAT, Av Univ 3780, BR-18610034 Botucatu, SP - Brazil
[3] Sao Paulo State Univ UNESP, Coll Agr Sci, Dept Crop Sci, Botucatu, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | AGRONOMY JOURNAL; v. 113, n. 5 SEP 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Acidity and low P availability in tropical soils constrain cassava (Manihot esculenta Crantz) yield. Liming increases soil Ca and P availability, but Ca can increase the storage root cooking time, and its effects vary with soil P availability. The effects of liming and P fertilization on cassava yield and their relationship with storage root cooking need to be better understood. A 2-yr field experiment was conducted to evaluate the effect of liming at 0, 1.5, 3.1, and 4.8 Mg ha(-1) with 0 or 70 kg P ha(-1) on plant nutritional status and growth, yield, and cooking of fresh storage roots of the cassava cultivar IAC 576-70. Foliar concentrations were increased for N, P, and Mg and reduced for Mn and Zn with lime application. Maximum cassava fresh storage root yield (26.4 Mg ha(-1)) was obtained with an optimal lime rate of 3.0 Mg ha(-1) and a base saturation of 50%. Liming promoted a 6.5% increase (1.7 min) in the cooking time of storage roots. Application of P fertilizer increased shoot biomass in acidic soil and the diameter and mean weight of the storage roots in the amended soil. Phosphorus fertilization increased the yield (22% or 4.7 Mg ha(-1)) and P concentration of the storage roots without changing their P/Ca ratio or cooking time. Liming and P fertilization can be managed to improve cassava storage root yield without affecting storage root cooking. (AU) | |
| FAPESP's process: | 15/20211-1 - Growth, yield and cooking of cassava in response to lime and phosphate fertilizer |
| Grantee: | Ben-Hur e Souza Rosa |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |