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Nutrient Uptake and Removal by Potato Cultivars as Affected by Phosphate Fertilization of Soils with Different Levels of Phosphorus Availability

Adalton Mazetti Fernandes, Rogério Peres Soratto, Emerson de Freitas Cordova de Souza, André Luiz Gomes Job

12/Jun/2017

ABSTRACT Studies in the past decades have focused on how tuber yield of potato grown on different types of soil is affected by phosphate fertilizer rates. However, little is known about the effects of phosphorus availability in the soil and of phosphate fertilization on nutrient uptake and removal by the main potato cultivars currently grown in Brazil. Thus, in this study we investigated the influence of P fertilization rates on dry matter (DM) yield and nutrient uptake and removal in […]

Nitrogen and Potassium Fertilization in a Guava Orchard Evaluated for Five Cycles: Effects on the Plant and on Production

Rafael Marangoni Montes, Léon Étienne Parent, Daniel Angelucci de Amorim, Danilo Eduardo Rozane, Sergie-Étienne Parent, William Natale, [...]

23/Aug/2016

ABSTRACT Guava response to fertilization can be monitored through plant tissue analysis. Correct interpretation of these results, based on standard levels, is of great importance for correct nutrient management of the crop. However, standard levels are constantly criticized for not considering interactions among elements. To improve the nutritional diagnosis of ‘Paluma’ guava (Psidium guajava L., Myrtaceae), an experiment was conducted using nitrogen fertilization (0, 0.5, 1.0, and 2.0 kg per plant per cycle of N, with urea as a source […]

Macronutrient Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture

Carlos Alexandre Costa Crusciol, Adalton Mazetti Fernandes, Antonio Carlos de Almeida Carmeis, Rita de Cássia Félix Alvarez

06/Jun/2016

ABSTRACT Modern high-yielding rice cultivars possibly take up and remove greater quantities of macronutrients than traditional and intermediate cultivars. This study was carried out with the aim of evaluating the extraction and removal of macronutrients by upland rice cultivars. These information are of utmost importance for the correct fertilizer management. The treatments consisted of three upland rice cultivars (Caiapó, a traditional type; BRS Primavera, an intermediate type; and Maravilha, a modern type). Macronutrient accumulation by rice cultivars up to the […]

Yield gains of coffee plants from phosphorus fertilization may not be generalized for high density planting

Samuel Vasconcelos Valadares, Júlio César Lima Neves, Roberto Ferreira Novais, Gustavo Nogueira Guedes Pereira Rosa, Hermínia Emília Prieto Martinez, Víctor Hugo Alvarez V.

01/Jun/2014

Inconclusive responses of the adult coffee plant to phosphorus fertilization have been reported in the literature, especially when dealing with application of this nutrient in high density planting systems. Thus, this study was carried out for the purpose of assessing the response of adult coffee plants at high planting density in full production (in regard to yield and their biennial cycle/stability) to the addition of different sources and application rates of P in the Zona da Mata region of Minas […]

Nutrition and yield of macadamia nut tree as a result of split application of mineral fertilizer

Marcos José Perdoná, Adriana Novais Martins, Eduardo Suguino, Sally Ferreira Blat, Rogério Peres Soratto

01/Jun/2014

Nutrient availability during the year can affect the performance of macadamia (Macadamia integrifolia). However, there is no information about this crop responses to split application of fertilizer under Brazilian conditions. The aim of this study was to evaluate the influence of splitting the application of chemical fertilizers on the nutrition, yield, and quality of nuts of the macadamia nut tree. The experiment was conducted over three growing seasons on an Oxisol in Jaboticabal, State of São Paulo, Brazil. A randomized […]

Nutrient extraction and exportation by common bean cultivars under different fertilization levels: II – micronutrients

Adalton Mazetti Fernandes, Rogério Peres Soratto, Letícia Andriani dos Santos

01/Aug/2013

Where the level of agricultural technology is higher, common bean cultivars with a higher yield potential possibly require greater amounts of micronutrients. In Brazil however, there is a lack of information about the micronutrient extraction and exportation by the main grown cultivars. The objective of this study was to evaluate micronutrient (B, Cu, Fe, Mn, and Zn) extraction and exportation by common bean cultivars Pérola and IAC Alvorada, under different levels of NPK fertilization, on a dystroferric Red Nitosol, in […]

Nutrient extraction and exportation by common bean cultivars under different fertilization levels: I – macronutrients

Rogério Peres Soratto, Adalton Mazetti Fernandes, Letícia Andriani dos Santos, André Luiz Gomes Job

01/Aug/2013

The use of cultivars with a higher yield potential and the adoption of new technology have achieved high grain yields in common bean, which probably changed the demand for nutrients in this crop. However, there is almost no information about the periods of the cycle in which nutrients are most demanded at which quantities by the main cultivars. The objective of this study was to evaluate the macronutrient extraction and exportation by the common bean cultivars Pérola and IAC Alvorada, […]

Leaf application of silicic acid to white oat and wheat

Rogério Peres Soratto, Carlos Alexandre Costa Crusciol, Gustavo Spadotti Amaral Castro, Claudio Hideo Martins da Costa, Jayme Ferrari Neto

01/Nov/2012

Silicon (Si) is beneficial to plants in several aspects, but there are doubts about the effectiveness of leaf application. The purpose of this work was to evaluate the effects of Si, applied in a newly developed stabilized silicic acid form to the leaf, on nutrition and yield of irrigated white oat and wheat. Two experiments were performed (one per crop) in winter 2008, in Botucatu-SP, Brazil. A completely randomized block design with 14 replications was used. Treatments consisted of a […]

Nutrition, dry matter accumulation and partitioning and phosphorus use efficiency of potato grown at different phosphorus levels in nutrient solution

Adalton Mazetti Fernandes, Rogério Peres Soratto

01/Nov/2012

High rates of phosphate fertilizers are applied to potato (Solanum tuberosum L.), which may cause antagonistic interactions with other nutrients and limit crop yields when over-supplied. The purpose of this study was to evaluate the influence of phosphorus (P) levels in nutrient solution on P use efficiency, nutritional status and dry matter (DM) accumulation and partitioning of potato plants cv. Ágata. The experiment was carried out in a greenhouse, arranged in a completely randomized block design with four replications. Treatments […]

Boron translocation and accumulation in cotton cultivars

Ciro Antonio Rosolem, Angélica Cristina Fernandes Deus, Priscila Oliveira Martins, Érica Pontes Léles

01/Aug/2012

Cotton is responsive to boron fertilization, however, results on the mobility of this nutrient in the plant are few and controversial. This study had the objective of evaluating boron translocation and accumulation in cotton cultivars. Four cotton cultivars (FM 993, FM 910, FMT 701, and FMT 523) were grown for six weeks in 8 L pots with washed sand and nutrient solution at two boron concentrations (0 and 4.5 ∝mol L-1). After six weeks, plants were sampled for four more […]

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