Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Roberto Ferreira Novais"'
Autor:
Gustavo Franco de Castro, Rafael Lucas Coca Cuesta, Valber Georgio de Oliveira Duarte, Edson Marcio Mattiello, Jader Alves Ferreira, Roberto Ferreira Novais, Jairo Tronto
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 47 (2023)
ABSTRACT Soil nutrient availability and interpretations of nutrient contents are based on the results obtained from specific extraction methods used in routine testing laboratories. The development of new extraction methods and new extractants with b
Externí odkaz:
https://doaj.org/article/a62a6370fbf544f6807b974e6f315e16
Autor:
Felipe Augusto Reis Gonçalves, Leonardo Angelo de Aquino, Luciel Rauni Dezordi, Junia Maria Clemente, Roberto Ferreira Novais
Publikováno v:
Pesquisa Agropecuária Tropical, Vol 47, Iss 1, Pp 31-40 (2017)
Carrot is one of the most consumed vegetables in Brazil, where the cultivars currently grown present a high yield potential and nutritional demand, which require constant adjustments in fertilization programs for the crop. This study aimed at determi
Externí odkaz:
https://doaj.org/article/cd08d80affe34d5291845fedf8ca573f
Autor:
Luciel Rauni Dezordi, Leonardo Angelo de Aquino, Roberto Ferreira Novais, Priscila Maria de Aquino, Luiz Paulo Dornelas dos Santos
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 39, Iss 6, Pp 1714-1722 (2015)
ABSTRACT The literature on fertilization for carrot growing usually recommends nutrient application rates for yield expectations lower than the yields currently obtained. Moreover, the recommendation only considers the results of soil chemical analys
Externí odkaz:
https://doaj.org/article/c9cb5c13890047a391c500dc89c39975
Autor:
Leonardus Vergütz, Luis Henrique Mendes da Silva, Roberto Ferreira Novais, Maria do Carmo Hespanhol da Silva, Aparecida Barbosa Mageste, Ivo Ribeiro Silva
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 39, Iss 6, Pp 1633-1642 (2015)
ABSTRACT Humic acids (HA) are a component of humic substances (HS), which are found in nearly all soils, sediments, and waters. They play a key role in many, if not most, chemical and physical properties in their environment. Despite the importance o
Externí odkaz:
https://doaj.org/article/88172e78636c466a836f51426fce8cb3
Autor:
Ignácio Harguindeguy, Gustavo Franco de Castro, Sarah Vieira Novais, Leonardus Vergutz, Wagner Luiz Araujo, Roberto Ferreira Novais
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 42, Iss 0 (2018)
ABSTRACT: Vale do Rio Doce shoot dieback (VRDSD) is an anomaly whose cause seems to be associated with hypoxic conditions and their consequences (excess Mn and Fe) triggered by elevation of the water table in areas with poor drainage. Different plant
Externí odkaz:
https://doaj.org/article/40db59b5a6a0463bac2a8e462435f5cf
Autor:
Eric Victor de Oliveira Ferreira, Roberto Ferreira Novais, Bruna Maximiano Médice, Nairam Félix de Barros, Ivo Ribeiro Silva
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 39, Iss 4, Pp 1127-1140 (2015)
The use of leaf total nitrogen concentration as an indicator for nutritional diagnosis has some limitations. The objective of this study was to determine the reliability of total N concentration as an indicator of N status for eucalyptus clones, and
Externí odkaz:
https://doaj.org/article/7d5d260fe60a48cc858020de2851b734
Autor:
Sarah Vieira Novais, Edson Marcio Mattiello, Leonardus Vergutz, Leônidas Carrijo Azevedo Melo, Írio Fernando de Freitas, Roberto Ferreira Novais
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 39, Iss 4, Pp 1079-1087 (2015)
The Mehlich-1 (M-1) extractant and Monocalcium Phosphate in acetic acid (MCPa) have mechanisms for extraction of available P and S in acidity and in ligand exchange, whether of the sulfate of the extractant by the phosphate of the soil, or of the pho
Externí odkaz:
https://doaj.org/article/d88800d8bf304cc4b1e6d97cfbc6dc97
Autor:
Danilo de Lima Camêlo, João Carlos Ker, Roberto Ferreira Novais, Marcelo Metri Corrêa, Vinício Coelho de Lima
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 39, Iss 4, Pp 1058-1067 (2015)
In general, Latosols have low levels of available P, however, the influence of the parent material seems to be decisive in defining the pool and predominant form of P in these soils. This study evaluated P availability by extraction with Mehlich-1 (M
Externí odkaz:
https://doaj.org/article/55937be7a03e4f11b5105a4f57c2bfee
Autor:
Eric Victor de Oliveira Ferreira, Roberto Ferreira Novais, Greice Leal Pereira, Nairam Félix de Barros, Ivo Ribeiro da Silva
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 39, Iss 3, Pp 809-820 (2015)
Eucalyptus requires large amounts of nitrogen (N); however, it responds in diverse manners to the application of this nutrient. The aim of this study was to evaluate the differential performance in growth, mineral nutrition, and gas exchanges of N-fe
Externí odkaz:
https://doaj.org/article/6ef9f0f89d6a4af5800c14aa9db6407b
Autor:
Luíz Paulo Figueredo Benício, Rejane Alvarenga Silva, Júnia Aparecida Lopes, Denise Eulálio, Rodrigo Morais Menezes dos Santos, Leonardo Angelo de Aquino, Leonardus Vergütz, Roberto Ferreira Novais, Liovando Marciano da Costa, Frederico Garcia Pinto, Jairo Tronto
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 39, Iss 1, Pp 1-13 (2015)
The current research aims to introduce Layered Double Hydroxides (LDH) as nanomaterials to be used in agriculture, with particular reference to its use as storage and slow release matrix of nutrients and agrochemicals for plant growing. Structural ch
Externí odkaz:
https://doaj.org/article/057936f0a31d4755a6dff453ac4f13b3