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Publications (27)
A irrigação localizada possui várias vantagens quando comparada com o sistema convencional, principalmente na aplicação de fertilizantes via água de irrigação. A magnitude da mobilidade dos nutrientes no perfil afeta o contato destes com as raízes e a lixiviação e influencia a época e o método de aplicação dos fertilizantes ao solo. Este trabalho t...
CRESCIMENTO, PRODUÇÃO E QUALIDADE DE PLÁTANO SOB DIFERENTES DENSIDADES, ADUBAÇÃO E LÂMINAS DE ÁGUA LENILSON WISNER FERREIRA LIMA1; EUGÊNIO FERREIRA COELHO2; ANA LUCIA BORGES3; BRUNO LAECIO DA SILVA PEREIRA4; DAMIANA LIMA BARROS5 E JOSÉ CARLOS LOPES DE LIMA6 1 Irrigação e Fertirrigação, Embrapa Mandioca e Fruticultura. Rua Embrapa S/N - Cx. Postal 0...
Occurrence of more frequent events of prolonged periods of low rainfall (drought) in worldwide cacao (Theobroma cacao L.) production zones has not only compromised productivity of small farmers but also crop survival. This study aimed to evaluate how and to what extent cacao tree mortality in dry years is related with variations in soil and physiog...
The complexity of humic substances (HS) and their properties in agricultural applications have attracted the attention of many researchers. However, controversial results have been obtained, because of the difficulty in identifying a precise relationship between the structure and activity of these substances. This study aimed to evaluate the influe...
A bananeira apresenta diversos problemas fitossanitários, tendo destaque a murcha de Fusarium causada pelo fungo Fusarium oxysporum f. sp. cubense (Foc). O uso de microrganismos como o Pseudomonas, tem sido uma alternativa para o biocontrole dos fitopatógenos. Com o objetivo de investigar a capacidade de controle da rizobactéria do gênero Pseudomon...
Fertirrigation allows total control of the amount of applied fertilizers to the soil as a function of crop demand. Fertigation relies on monitoring of soil ions to obtain the sustainability of soil chemical conditions. The continuous evaluation of ions in the soil solution also contributes to the estimation of the cycling rate of chemical elements...
The adequate use of fertigation is based on the application of nutrients by water according to crop needs throughout its cycle. The evaluation of nutrients in the soil solution may be faster if based upon soil electric conductivity and moisture by using parametric models. The objectives of the study were: (i) to evaluate models for estimating the c...
The banana crop is extremely demanding of nutrients and quite sensitive to soil-related growth factors. A field experiment was set up to evaluate the effect of irrigation and soil-cover management on the physical, chemical, and biological attributes of an Oxisol cultivated with banana, in Northeast Brazil. We tested two irrigation systems (drip or...
O Brasil produz 241.614 toneladas de lixo por dia, onde 76% são depositados a céu aberto, em lixões, 13% em aterros controlados, 10% em usinas de reciclagem e 0,1% incinerados. Deste total 60% é lixo orgânico, com alto potencial de transformação em fonte de nutrientes para as plantas (MASCIANDARO et al., 2014). A agricultura orgânica se divide em d...
O crescimento das plantas na ausência de qualquer elemento considerado essencial para o seu desenvolvimento causa fenômenos bioquímicos dentro das mesmas, que são expressos por sintomas típicos. Esses sintomas são caracterizados de forma rápida pelo diagnóstico visual, que consiste em comparar visualmente a aparência (cor, tamanho, forma) das plant...
Com o aumento populacional e a crescente migração da população do campo para as cidades, tem surgido formas alternativas de produção. A agricultura urbana e periurbana são importantes fatores no processo de produção das cidades. Dessa forma a agricultura urbana pode ser conceituada como uma atividade social de cultivo, produção e processamento de a...
Trickle irrigation has been largely used for banana in Brazil, mainly due to the increase in water and fertilizer use efficiency. These irrigation systems have different options concerning number, type and flow rate of emitters as well as for hydraulics, number and location of lateral lines. The small area of soil wetted by these systems limits roo...
The use of humic substances and plant extract has been increasing mainly in organic crop systems without scientific-based recommendations. Research is necessary to evaluate the feasibility and the recommendations of these substances. The objective of this work was to evaluate the effect of humic substances (humic and fulvic acids) applied by fertig...
Fertigation with humic substances products has been adopted in commercial banana tree plantations. However, there are few studies on the procedure to confirm its technical feasibility. This study aimed at assessing the effects of fertigation with humic substances on the chemical attributes of a Dystric Densic Xantic Ferralsol cultivated with the ‘B...
This study aimed to evaluate the effects of fertigation with humic substances, with and without the addition of plant extracts, on the root system of the 'BRS Princesa' banana cultivar. The banana crop was cultivated at a spacing of 2.0 × 2.5 m and fertigated using a drip system in a dystrocohesive Yellow Latosol. The experimental design was random...
Cover crop of soil is effective in controlling erosion and to recover degradation. The current farming systems involve soil revolvement, compacting the surface, promoting oxidation of organic matter and emission of C into the atmosphere. Practices at subsoling and cultivation of plants of the Leguminosae family have been used to break up the compac...
