Nutrient uptake and use efficiency by tropical legume cover crops at varying pH of an Oxisol.

The objective of our study was to evaluate growth and nutrient uptake parameters of 16 tropical legume cover crops under three soil pH (5.1, 6.5, and 7.0) of an Oxisol

Common beans grain yield as affected by phosphorus fertilization in the sowing furrow and foliar.

The aim of this study was to test the hypothesis that foliar P application would increases the efficiency of utilization of P from soil by common bean fertilization

Evaluation of the recovery 15n-ammonium nitrate in capim-Marandu grass pasture and corn cultivated in a crop-livestock integration.

The study aimed at evaluating the total nitrogen accumulation and the nitrogen accumulated in the intercropping corn and B. brizantha evaluating the total nitrogen concentration from the fertilizer ammonium nitrate under different rates (15NH4NO3) applied in the forages plants after corn harvest, and the residual effect of this practice in the following corn crop in the next growing season

Application of liquid calcium carbonate micron particles on the furrow as affecting the soil phosphorus availability and common bean yield.

The aim of this study was to evaluate the effect of the liquid application of calcium carbonate micron particles in the sowing furrow on the pH, the concentrations of Al, P, K, and Ca, and the base saturation in the soil and on the yield components, grain yield, concentration, and grain content of common bean

Cover crops species as affecting soil aggregation, aggregate stability, organic carbon concentration and soil bulk density in different soil aggregate fractions.

The objectives of this study were to elucidate the effects of crop rotation with cover crop species in the soil aggregation, total organic carbon concentration in the whole soil and in the soil aggregates fractions and soil bulk density of the cultivated soil under no-tillage system and conventional tillage system (one plowing and two disking)

Physical fractions of soil organic matter as affected by cover crops and no-till system.

The objective of this study was to evaluate the effect of cover crops on total organic carbon and physical fractions of soil organic matter in soil under a no-tillage system and a conventional tillage system (CTS, one plowing and two disking)

Phosphate fertilization in the soil and penergetic application in the grain yield of common bean.

The objective was to determine the grain yield and yield components of common bean as affected by P fertilization and applying Penergetic K (soil) and P (plant)

O agronegócio da fruticultura na Amazônia: um estudo exploratório.

Esta pesquisa, utilizando-se do método do estudo exploratório, buscou identificar os aspectos que interferem e influenciam no processo de desenvolvimento da fruticultura na Região Amazônica. Por meio do levantamento bibliográfico, de informações verbais e de dados estatísticos, busca-se construir a cadeia produtiva de frutas na Amazônia, analisando sua competitividade por intermédio da análise estratégica de seus pontos fortes, pontos fracos, oportunidades e ameaças.bitstream/item/24778/1/doc96-fruticultura.pd

Previous intercropping corn with palisadegrass in a tropical region as affecting soil fertility and annual crops nutrition and grain yields.

The objective of this study was to evaluate the effect of the introduction of perennial forage as a previous cultivation in the soil fertility and on the five followed cash crop nutrition and grain yield in a tropical region