ABSTRACT Modern runner-type peanut cultivars have high yield potential, but little is still known about the dynamics of nutrient uptake by these cultivars and whether nutrient uptake differs between maturity groups. This study evaluated the growth, nutrient uptake, and nutrient removal of runner-type peanut cultivars with early and late maturity. The study was conducted in the field in the 2021/2022 season, in a sandy soil environment in southeastern Brazil. Treatments consisted of runner-type peanut cultivars (early and late maturity) and […]

ABSTRACT Knowledge of the decomposition dynamics of aboveground phytomass and its release of nutrients in mixtures of cover crops as well as the impact on the soil tillage system is fundamental for the sustainable management of agroecosystems. This work aimed to evaluate whether soil tillage and the choice of cover crops cultivated in the interrows can be technological strategies to increase dry biomass production, increase the capacity to add carbon, and improve macronutrient cycling in a mango ( Mangifera indica […]

ABSTRACT Potassium (K) is one of the most highly accumulating nutrients in Eucalyptus and, consequently, is heavily exported by the harvesting of wood. Moreover, its availability in the soil in most Brazilian plantation areas is very low, especially in the regions of the Cerrado biome, which has soils with low natural fertility and marked water deficits, implying a lack of nutrient supply and, consequently, a less efficient water use. Our objective was to evaluate the effects of K fertilization on […]

ABSTRACT Termites have peculiar activities in the soil, inducing significant changes in the soil properties. The objective of this study was to assess physical and chemical properties and soil organic matter to evaluate the effect of termite activity and termite mounds on the soil. Two toposequences were selected and divided in slope thirds (shoulder, backslope, and footslope). In each of these, four termite mounds were selected. Samples were taken from the soils and termite mounds (top, center, and base) along […]

Physic nut (Jatropha curcas L.) is a perennial oilseed species that has aroused economic interest for biodiesel production. Among other factors, it is essential to determine the nutritional demands of this species to facilitate raising it as a crop. This study aimed to evaluate the early growth and mineral nutrition of physic nut, as well as soil fertility, as affected by phosphorus fertilization. The study was carried out in a plastic greenhouse in a completely randomized block experimental design with […]

Nutrients accumulated in dry crop residues and released in the decomposition process return to the soil and may become available to subsequent crops. The objective of this study was to evaluate the decomposition and nutrient release of plant residues of different no-tillage crop sequences in the second growing season. A field experiment was carried out on a Rhodic Eutrudox in Jaboticabal, SP, Brazil (48°18’W and 21°15’S), arranged in a randomized split-block design with three replications. The treatments consisted of combinations […]

In no-tillage systems, plant residues are used as soil cover to control soil erosion and promote nutrient cycling. The objective of this study was to evaluate the dry matter production and nutrient accumulation after different crop sequences in no-tillage. A field experiment was carried out on a Rhodic Eutrudox in Jaboticabal, SP, Brazil (48°18’W and 21°15’S). A randomized split-block design with three replications was used. The treatments were combinations of three summer crop sequences (soybean-corn rotation, corn monoculture and soybean […]

The cultivar Gold (MD-2) has attracted interest in Brazil, with a view to fresh pineapple export. However, little scientific information is available on the nutritional management of this cultivar in the country. This study aimed to determine the effect of N, P and K fertilization on the nutritional status, development, yield and fruit quality of MD-2 pineapple plants. Five doses of N; P2O5 and K2O, were studied and the leaf ‘D’ development, the N, P and K levels, and fruit […]

Swine manure is a good nutrient source, but may have a negative impact on the environment when inadequately used. The aim of this work was to evaluate changes in properties of soils under no-till grain production and long-term swine manure fertilization. Soil samples from three representative soils types (Oxisol, Inceptisol and Leptosol) from Western Santa Catarina, Southern Brazil, were collected under no-tillage cultivation and surface application of swine manure for about 15 years and over 20 years. Samples from areas treated with […]

Alterations in Potassium, Calcium and Magnesium Concentrations in Marandu Palisadegrass Fertilized with Nitrogen and Sulfur Rates An efficient pasture use in intensive production systems depends on the balanced mineral nutrition of the forage plant. Our objective was to evaluate changes in potassium, calcium and magnesium concentrations of Brachiaria brizantha, cv. Marandu grown on an Entisol with nitrogen and sulfur rates. The experiment was carried out in a greenhouse, in Piracicaba, State of São Paulo, from December 2004 to April 2005. […]