Subsoil Fertility
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Gypsum application, soil fertility and cotton root growth
ABSTRACT Since there is no consensus on phosphogypsum (PG) rates to be used in agriculture, a better understanding of its effects on the soil solution is needed. Cotton root growth was evaluated as related to Al and Ca activity in soil solution affected by PG. The experiment was carried out in rhizotrons filled with30∙dm–3 of soil. PG rates were estimate
Bragantia. Publicado em: 11/04/2019
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2. Gesso agrícola na produção de milho e soja em solo de alta fertilidade e baixa acidez em subsuperfície em plantio direto
There are doubts about the conditions in which a favorable effect of the application of gypsum on the yield of grain crops can be expected. In order to evaluate the influence of gypsum application in the soil chemical attributes, in mineral nutrition of maize (Zea mays L.) and soybean (Glycine max L. Merrill) yield in no-till system, an experiment was carrie
Publicado em: 2009
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3. Soil fauna, arbuscular mycorrhizal fungi and diazotrophic bacteria in Areas of Mining of Bauxite in the Northwest Pará revegetated with palm oil. / Fauna do Solo, Fungos Micorrízicos Arbusculares e Bactérias Diazotróficas em Áreas de Mineração de Bauxita no Noroeste do Pará Revegetadas com Dendê.
The Mining is considered the activity can cause a great impact in the environment, involving the vegetation and subsoil layers remove. After the finish of mineral sources, mandatorily these areas require recovery measures. This study aimed to evaluate the initial establishment of three genotypes of palm oil: C2501, C2301 and C2528, indicated by Embrapa Amaz�
Publicado em: 2009
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4. Adubação de mudas de baru (Dipteryx alata Vog.), em viveiro / Fertilization of baru seedlings (Dipteryx alata vog.), in nursery
Producing seedlings of good quality is an important step in the process of planting forest species. Addition of lime and fertilizers contribute in obtaining good quality seedlings, however, information is limited on fertilization and nutrition of native species of savannah. The objective of this study was to evaluate growth response of baru seedlings (Dipter
Publicado em: 2008
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5. ATRIBUTOS QUÍMICOS DE UM LATOSSOLO E OMPORTAMENTO DO TRIGO E DA SOJA NO SISTEMA PLANTIO DIRETO INFLUENCIADOS PELA APLICAÇÃO E REAPLICAÇÃO DE GESSO AGRÍCOLA PONTA GROSSA PR
Gypsum application provides chemical changes on soil that can improve crop yield. This study was carried out to investigate the gypsum application and reapplication effects on soil chemical attributes, mineral nutrition and wheat and soybean grain yields under a no-till system. A field experiment was established in 1998 on a dystrophic clayey Rhodic Hapludox
Publicado em: 2008
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6. CHANGES IN CHEMICAL SOIL ATTRIBUTES AND NIAGARA ROSADA GRAPE RESPONSE TO GYPSUM APPLICATION / ALTERAÇÕES QUÍMICAS DO SOLO E RESPOSTA DA VIDEIRA NIAGARA ROSADA À APLICAÇÃO DE GESSO AGRÍCOLA PONTA GROSSA - PR
Gypsum applied on the soil surface reduces subsoil Al3+ toxicity and increases the Ca2+ and S-SO42- levels, promoting better development of plant roots. Gains in productivity has observed with the use of gypsum in annual and perennial crops, but lacking studies regarding to gypsum application on grapevines. The aim of this study was to evaluate the effect of
Publicado em: 2008
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7. Uso de resíduos vegetais em solos ácidos sob sistema de plantio direto
The Brazilian soils are characterized by low natural fertility, where the main chemical limitations are high acidity and low basic exchangeable cation saturation that can affect the majority of cash crop productions. Liming is the principal practice to reduce soil acidity and to increase basic cations in these soils with high pH-dependent cation exchangeable
Publicado em: 2007
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8. EFFECT OF SUBSOIL ACIDITY AND FERTILITY ON THE GROWTH OF SEEDLING BLACK LOCUST AND GREEN ASH1