15 documents found, page 1 of 2

Soil chemical properties and nutrition of conilon coffee fertilized with molybd...

Molybdenum (Mo) availability is strongly affected by soil pH, which determines the dynamics of electrical charges and the adsorption of molybdate. This study evaluated the effects of nitrogen (N) and Mo application on the chemical properties of a Latossolo Amarelo (Oxisol) and in Coffea canephora nutrition and productivity throughout two productive cycles under field conditions. The experiment was conducted fro...

Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochl...

To diagnose and monitor the nutritional status of commercial crops, reference standards must be established based on chemical analyses of soils and leaf tissues. Therefore, the objective of this study was to establish sufficiency ranges, DRIS standards and leaf nutritional diagnoses for palisade grass pastures in the rainy and dry seasons. Of a total of 105 sampled pastures, the 20 highest-yielding areas were u...

Macronutrient dynamics in leaves and bunches of black pepper

Spatial distribution of physical attributes of an Ultisol under papaya crop

The successful development of the root system of plants depends on the favorable conditions of soil physical attributes. The objective of this work was to study the spatial variability of physical attributes in an Ultisol cultivated with papaya. The soil was prepared mechanically plowing, harrowing, sulcal and subsoiler. In the center of the crop field was built a sampling grid with points spaced 5.7 m, totaliz...

COMPORTAMENTO ESPAÇO-TEMPORAL DA FUSARIOSE EM PIMENTA-DO-REINO

Objetivou-se com o trabalho estudar a dinâmica de distribuição espaço-temporal da fusariose em pimenta-do-reino. Foram monitoradas quatro áreas de plantio, no município de São Mateus-ES, no período de dez/2015 a dez/2016. Realizaram-se seis avaliações da doença. As plantas foram avaliadas visualmente em busca dos sintomas típicos da doença. A presença ou ausência de sintomas, e a posição de cada planta, foram a...

Nitrogenous fertilization in pastures: promising results obtained in the resear...

Pastures are the basis of bovine feeding in Brazil. However, productivity levels are much lower than what could be reached with adoption of appropriate management of pasture areas. Numerous factors contribute for these results, especially the low availability of nutrients. A review of the literature shows, in the last decades, the large volume of assessments of the response of tropical gramineous forage to nitr...

First approach for soil to conilon coffee in the atlantic region of Bahia

The Integrated Diagnosis and Recommendation (DRIS), although commonly used in the interpretation of leaf analysis has also been employed in chemical analysis of soil, as there is potential for the use of the methodology also in soil and coffee. This study aimed to establish DRIS sufficiency ranges and standards for soils under conilon coffee in the Atlantic region of Bahia State. Forty eight samples of soil wer...

Spatial distribution of attack of coffee berry borerin conilon coffee

Insect spatial distribution allows concentrate sampling and management efforts in places with the highest population densities, and insect spatial behavior provides information about conditions in agroecosystem and migration or plague aggregation. Despite the importance for pest management, spatial distribution knowledge of Hypothenemus hampei in conilon coffee has been rare reported. An irregular mesh with 100...

PRODUÇÃO E PERFILHAMENTO DO CAPIM-MOMBAÇA SUBMETIDO A FONTES E DOSES DE NITROGÊNIO

O nitrogênio influencia inúmeras características morfofisiológicas das gramíneas forrageiras, que em última análise, interferem diretamente na produção e na qualidade da forragem. Objetivou-se no presente trabalho avaliar a produção de matéria seca e número de perfilhos do Panicum maximum cv. Mombaça, submetido a diferentes fontes e doses de nitrogênio. O experimento foi desenvolvido no Instituto Federal do Esp...

Delimitation of management zones for macronutrients in coffee crop conilon inte...

Studies on the determination of management zones and the spatial variation of attributes associated with yield response of crops soil can contribute to the rational application of inputs, enabling economic and environmental gains. The purpose of this study was to determine the spatial distribution of soil macronutrients Ca, Mg, K and P and defining management zone for application of inputs in a conilon crop int...