Data/hora: 05/06/2024 01:28:01

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 09/06/1995
Data da última atualização: | 09/06/1995
Autoria: | BEAUFILS, E. R.; SUMNER, M. E.
Título: | Application on the dris approach for calibrating soil, plant yield and plant quality factors of sugarcane.
Ano de publicação: | 1976
Fonte/Imprenta: | Proceedings of the South African Sugar Technologist Association, n.50, p.1-7, June, 1976.
Idioma: | Inglês
Conteúdo: | Beaufils' experimental approach and calibration technique with a formula (DRIS for Diagnosis and Recommendation Integrated System) is applied to sugarcane cultivation. Provisional norms for soil pH, P, K, Ca, Mg and plant N, P, K, Ca and Mg are presented in the form of indices. They all are derived from a single general formula. The steps followed for establishing these norms, by interpreting data supplied by growers in the South African sugar industry, are described. An application of these indices to an independent N P K lime factorial pot experiment is then analysed. In this experiment, diagnoses from both "DRIS" and "threshold value" techniques are compared, as also are the yield responses obtained by application of the treatments which would be recommended. Although still provisional, the DRIS indices presented in this paper show for each nutrient considered a marked superiority for both sensitivity of diagnosis and yield increases, when compared with the "threshold value" technique. The complementary nature of information from both soil and plant for diagnostic purpose is illustrated, as well as the necessity for any diagnostic technique to take into account the "concept of balance" for both soil and plant. The results confirm that diagnoses of nutrient requirements can be determined by the DRIS method irrespective of cane age.
Palavras-Chave: | Cana-de-acucar; Plant; Quality.
Thesagro: | Planta; Qualidade; Solo.
Thesaurus Nal: | soil; sugarcane.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (28230-1) - ADD - SP - -- - SP0103 -  - 0103 - DIS