Normas preliminares DRIS e faixas de suficiência para goiabeira 'paluma'.
Normas preliminares DRIS e faixas de suficiência para goiabeira 'paluma'.
Author(s): SOUZA, H. A. de; ROZANE, D. E.; AMORIM, D. A. de; NATALE, W.
Summary: Resumo: O diagnóstico nutricional a partir da análise do tecido foliar é um instrumento eficiente para detectar desequilíbrios e auxiliar no processo de recomendação de adubação. Assim, objetivou-se avaliar a relação entre os índices DRIS e os teores foliares de nutrientes, estabelecer teores foliares adequados de nutrientes com o DRIS e validar normas DRIS para a goiabeira 'Paluma'. Avaliou-se um pomar comercial nas condições de cultivo do Estado de São Paulo, durante seis safras de produção de frutos, provenientes de ensaios de adubação orgânica e mineral, totalizando 168 amostras. A ordem dos nutrientes limitantes por falta em ordem decrescente foram: Fe>K>Mn>Ca>B>N>P>Cu>S>Mg>Zn, e limitantes por excesso em ordem decrescente foram: Cu>Fe>P>Mn=Mg>Zn>Ca>B>K>S>N. As faixas adequadas, provenientes dos índices DRIS, são: 18-21; 1,5-1,7; 15-17; 8-11; 1,8-2,5 e 2,5-2,9 (g kg-1) para os macronutrientes N, P, K, Ca, Mg e S, respectivamente, e 26-38; 5-57; 54-112; 53-101 e 13-126 (mg kg-1) para os micronutrientes B, Cu, Fe, Mn e Zn, respectivamente. A produtividade das goiabeiras esteve associada ao estado nutricional. [Preliminary DRIS norms and sufficiency range for 'Paluma' guava tree]. The nutritional diagnosis based on the analysis of leaf tissue is an efficient tool for detecting imbalances and help the process of fertilization recommendation. Thus, it was evaluated to establish preliminary DRIS norms, and to derive critical levels and sufficiency ranges of nutrients in the leaf tissue to Paluma guava cultivar in commercial orchards growing conditions in the State of São Paulo. It was evaluated six harvests of fruit production, from organic and mineral fertilizer, totaling 168 samples. The order of limiting nutrients for failure in descending order were: Fe> K> Mn> Ca> B> N> P> Cu> S> Mg> Zn, and limiting excess in descending order were: Cu> Fe> P> Mn = Mg> Zn> Ca> B> K> S> N. The tracks from the appropriate DRIS indices are: 18-21, 1.5 to 1.7, 15-17, 8-11, 1.8 to 2.5 and 2.5 to 2.9 (g kg-1) for the macronutrients N, P, K, Ca, Mg and S, respectively, and 26-38, 5-57, 54-112, 53-101 and 13-126 (mg kg-1) for the micronutrients B, Cu, Fe, Mn and Zn, respectively. The yield of guava was related to nutritional status.
Publication year: 2013
Types of publication: Journal article
Unit: Embrapa Goats & Sheep
Keywords: DRIS, Diagnosis, Goiaba, Guava, Nutriente, Nutrição vegetal, Psidium guajava, Variedade Paluma, Variety
Observation
Some of Embrapa's publications are published as ePub files. To read them, use or download one of the following free software options to your computer or mobile device. Android: Google Play Books; IOS: iBooks; Windows and Linux: Calibre.
Access other publications
Access the Agricultural Research Database (BDPA) to consult Embrapa's full library collection and records.
Visit Embrapa Bookstore to purchase books and other publications sold by Embrapa.