• en
  • pt-br

All publications of “William Natale”

9 results

Modeling in the Adjustment of Fertilization Recommendation through Leaf Analysis in Fertigated ‘Prata’ Banana

José Aridiano Lima de Deus, Júlio César Lima Neves, Ismail Soares, Víctor Hugo Alvarez V., Fabricio Martinazzo Regis de Albuquerque, Lauana Lopes dos Santos, [...]


ABSTRACT: In banana cultivation, fertilization recommendations are almost exclusively based on soil chemical analysis, without considering leaf analysis and expected yield, which can help in the adjustment of fertilization programs. The aim of this study was to develop a method to recommend macronutrient fertilization rates which integrates data on leaf analysis, soil chemical analysis, and yield. Yield, soil chemical analysis, and leaf analysis data of fertigated plantations of ‘Prata’ banana were obtained for the first and second halves of the […]

Surface Application of Lime on a Guava Orchard in Production

Márcio Cleber de Medeiros Corrêa, William Natale, Renato de Mello Prado, David Ariovaldo Banzatto, Ronialison Fernandes Queiroz, Marcos Antonio Camacho da Silva


ABSTRACT Several complications can arise, either directly or indirectly, from implementation of measures to correct soil acidity in established fruit orchards, such as impaired roots, lower root volume, risk of plant infection, propagation of diseases, promotion of pest development (especially nematodes), and soil disaggregation and compaction. These factors can have a negative effect on crop yield. Therefore, it becomes critical to implement an effective method of neutralizing soil acidity, especially at the level of the tree roots. To assess the […]

Nitrogen and Potassium Fertilization in a Guava Orchard Evaluated for Five Cycles: Soil Cationic Balance

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


ABSTRACT Soil fertility evaluation through soil analysis traditionally does not consider interaction among elements. To include the interaction effect in interpretation of soil analyses, an experiment was conducted to evaluate the effect of nitrogen fertilization (0, 0.5, 1.0, and 2.0 kg N per plant per cycle) with urea (45 % N) and potassium fertilization (0, 0.55, 1.1, and 2.2 kg K2O per plant per cycle) with potassium chloride (60 % K2O) on soil cationic balance. The experiment was carried out […]

Use of Organic Compost Containing Waste from Small Ruminants in Corn Production

Henrique Antunes de Souza, Maria Diana Melo, Anacláudia Alves Primo, Lucas Vasconcelos Vieira, Roberto Cláudio Fernandes Franco Pompeu, Fernando Lisboa Guedes, [...]


ABSTRACT Composting is a useful way of transforming livestock waste into organic fertilizer, which is proven to increase soil nutrient levels, and thus crop yield. Remains from production and slaughter of small ruminants can become a source of important elements for plant growth, such as N, after microorganism-driven decomposition.The aim of this investigation was to evaluate the effects of this compost on soil fertility and on the nutritional status and yield of the corn crop. The experiment was conducted 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, [...]


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 […]

Normal nutrient ranges by the ChM, DRIS and CND methods and critical level by method of the reduced normal distribution for orange-pera

Marcos Antonio Camacho, Murilo Vargas da Silveira, Ricelly Aline Camargo, William Natale


The use of nutritional diagnoses methods to define ideal and critical nutrient concentrations in plant tissues has proved promising, provided the limits are known. This study determined the normal nutrient ranges for an orange pear population, using the methods mathematical chance (MCh), Integrated Diagnosis and Recommendation (DRIS) and Compositional Nutrient Diagnosis (CND), in addition to the critical level by the reduced normal distribution method. The study was conducted in Bebedouro, São Paulo state, at the Experimental Station of Bebedouro. The […]

Fractionation of manganese accumulated in tissue of star fruit plantlets

Amanda Hernandes, Jairo Osvaldo Cazetta, William Natale, Danilo Eduardo Rozane, Henrique Antunes de Souza, Liliane Maria Romualdo


Star fruit (Averrhoa carambola) plants tend to accumulate significant amounts of Mn in their tissues. However, information regarding the form in which the plant stores the excess is scarce. For a deeper understanding of this aspect, star fruit plantlets were grown in nutritive solutions of Furlani (1999) with increasing levels of Mn (0, 0.5, 25 and 50 mg L-1), and after 30, 60, 90 and 120 days the tissues were collected and subjected to a sequence of extracting solutions: water, […]

Agronomic evaluation of application of residue of the guava industry in a guava orchard

Henrique Antunes de Souza, William Natale, Danilo Eduardo Rozane


Given the scarcity of information in the literature and the importance of a proper management of organic waste in agriculture, this paper evaluated the effects of applying residues of the guava processing industry to an Ultisol, by evaluating changes in soil chemical properties, in the nutritional status of guava plants and fruit production. The residue rates applied in the orchard were established according to the residue N content and evaluated in a randomized block design with four replications, and the […]

Effects of liming on soil fertility, plant nutrition and guava yield

William Natale, Renato de Mello Prado, Danilo Eduardo Rozane, Liliane Maria Romualdo


Soil acidity is one of the most important constraints to agricultural production in the tropics. For this reason, the objective of this research was to evaluate the effects of soil liming on the performance of guava (Psidium guajava L.) trees. The experiment took place at the Citrus Experimental Station in Bebedouro, state of São Paulo, Brazil. The soil was a Typic Haplustox (V = 26 % in the 0 to 20 cm layer) between August 1999 and July 2006. The following doses of limestone were […]