| Full text | |
| Author(s): |
Vieira Megdao, Michele Xavier
[1]
;
Mariano, Eduardo
[2]
;
Leite, Jose Marcos
[3]
;
Megdao, Marcio Mahmoud
[1]
;
Ocheuze Trivelin, Paulo Cesar
[4]
Total Authors: 5
|
| Affiliation: | [1] Univ Estadual Montes Claros, Dept Ciencias Agr, Ave Reinaldo Viana 2-630, Caixa Postal 91, BR-39440000 Janauba, MG - Brazil
[2] Univ Estadual Paulista, Fac Ciencias Agron, Dept Prod & Melhoramento Vegetal, Ave Univ 3-780, BR-18610034 Botucatu, SP - Brazil
[3] Compass Minerals, Rodovia Piracicaba Limeira SP 147, Km 125, BR-13495000 Iracemapolis, SP - Brazil
[4] Univ Sao Paulo, Ctr Energia Nucl Agr, Ave Centenario 303, BR-13416900 Piracicaba, SP - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Pesquisa Agropecuária Brasileira; v. 54, 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
Abstract: The objective of this work was to evaluate the effect of the application of ammonium chloride as a nitrogen source for sugarcane (Saccharum sp.) on the development of the crop’s shoot and roots during two consecutive cycles. The experiment was conducted on a Typic Hapludox in the first and second sugarcane ratoons. The treatments consisted of four N doses (50, 100, 150, and 200 kg ha-1) applied as ammonium chloride (NH4Cl), besides a control, without the application of N. The increase in the NH4Cl dose increased in up to three times soil electrical conductivity in the layer of 0.0-0.2 m, with a consequent increase in the concentration of chlorine in leaves. In the second cycle, the contents of chlorine increased in 1,900 mg kg-1 in the leaf with the application of 200 mg kg-1 NH4Cl, when compared with the control. In the first cycle, the application of NH4Cl doses above 200 kg ha-1 N promoted a decrease in shoot productivity. In both cycles, there was no effect of the NH4Cl doses on root dry matter. High doses of NH4Cl, in consecutive sugarcane cycles, result in a decrease in the productivity of stalks for processing. (AU) | |
| FAPESP's process: | 09/10192-9 - Agronomic efficiency of nitrogen sources applied in sugarcane ratoon harvested mechanically |
| Grantee: | Michele Xavier Vieira Megda |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 09/12537-3 - Fitomass and nutrients accumulation in sugar cane ratoon related to nitrogen sources in unburned harvesting system |
| Grantee: | José Marcos Leite |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 09/04691-2 - Nitrogen mineralization and availability in soils cropped with sugarcane |
| Grantee: | Eduardo Mariano |
| Support Opportunities: | Scholarships in Brazil - Master |