Diagnosis and recommendation integrated system (DRIS) of soybean seed oil content

Castamann, Alfredo; Escosteguy, Pedro Alexandre Varella; Berres, Diego; Zanella, Silas

doi:10.1590/s0100-06832012000600016

Cited by 11 publications

(6 citation statements)

References 20 publications

(14 reference statements)

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“…Diversos autores têm atribuído a dependência de diagnósticos acurados pelo DRIS à abrangência das normas DRIS, alguns indicando o uso de normas universais, também denominadas genéricas (DIAS et al, 2010;WADT;DIAS, 2012;PEREIRA et al, 2015), e outros à normas Normas DRIS preliminares para pupunheira cultivada em diferentes sistemas de manejo na região sul-ocidental da Amazônia Tabela 2 -Normas DRIS log transformadas (média -m e desvio padrão -s) para pupunheira em sistemas agroflorestais, monocultivo e ambos os sistemas, na região Sul-Ocidental da Amazônia, em duas safras consecutivas Tabela 3 -Grau de concordância para a avaliação nutricional da pupunheira obtidos por valores de referência para sistemas agroflorestais, sistema de monocultivo e ambos os sistemas, na região sul-ocidental da Amazônia, em duas safras consecutivas (SILVA et al, 2005;PARTELLI et al, 2006;SANTANA et al, 2008;LANA et al, 2010;CASTAMANN et al, 2012). Para pupunheira, a universalidade das normas DRIS foi dependente do nutriente avaliado.…”

Section: Resultsunclassified

Normas DRIS preliminares para pupunheira cultivada em diferentes sistemas de manejo na região sul-ocidental da Amazônia

Azevedo

Wadt

Pérez

et al. 2016

AGRO@MBIENTE ON-LINE

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Resumo: A pupunheira, uma frutífera nativa da América Central e da Floresta Amazônica, vem sendo cultivada para produção de frutos e extração de palmito. Objetivou-se com o presente trabalho estabelecer os valores de referência, pelo DRIS, para palmitais de pupunheira cultivada em monocultivo e em sistemas agroflorestais (SAFs). Foram monitorados 81 palmitais em dois anos consecutivos, totalizando 162 amostras foliares compostas. As amostragens foram realizadas de novembro a dezembro dos anos de 2012 e 2013. Os palmitais foram classificados em três grupos para a produção das normas DRIS: i) pupunheiras cultivadas em monocultivo; ii) pupunheiras cultivadas em SAFs e iii) pupunheiras cultivadas em ambos sistemas de produção. Os índices DRIS foram calculados pela fórmula de Jones com transformação logarítmica. Os palmitais foram a seguir classificados pelo método do potencial de resposta à adubação, quanto ao estado nutricional, em insuficiente, balanceado e em excesso, para cada uma das normas DRIS obtidas. Para a maioria dos casos, o estado nutricional obtido pelas normas específicas foram os mesmos que aqueles obtidos pela norma genérica. O uso de normas genéricas resulta em diagnósticos semelhantes aos obtidos com normas específicas, podendo ser recomendado para avaliar o estado nutricional de pupunheiras, produzidas em diferentes condições de manejo. Palavras-chave:Bactris gasipaes. Diagnose Foliar. Estado Nutricional. Abstract:The peach palm, a native fruit of Central America and the Amazon rainforest, is cultivated for fruit production and extraction of palm hearts. The aim of this study was to establish reference values using DRIS, in groves of the peach palm grown in as a monocrop and under agroforestry systems (AFS). Eighty-one palm groves were monitored for two consecutive years, giving a total of 162 composite leaf samples. Samples were taken from November to December of 2012 and 2013. The palm groves were classified into three groups for production of the DRIS: i) peach palm grown as a monocrop; ii) peach palm grown under AFS and iii) peach palm grown under both systems of production. DRIS indices were calculated with the Jones formula using logarithmic transformation. The groves were then classified by the method of fertilisation response potential, as regards a nutrient status of insufficient, balanced and excessive, for each of the resulting DRIS norms. For most cases, the nutrient status obtained with specific norms were the same as those obtained with the generic norm. The use of generic norms results in diagnoses, which are similar to those obtained with specific norms, and can be recommended for evaluating the nutrient status of peach palms produced under different management systems.

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Section: Resultsunclassified

Normas DRIS preliminares para pupunheira cultivada em diferentes sistemas de manejo na região sul-ocidental da Amazônia

Azevedo

Wadt

Pérez

et al. 2016

AGRO@MBIENTE ON-LINE

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“…Many studies have used these diagnostic methods in soybean [8,9,10,11,12,13] nevertheless, these methods were not subjected to accuracy tests. The use of low-accuracy methods may produce inaccurate diagnoses, constituting a major limitation to optimize the use of fertilizers.…”

Section: Introductionmentioning

confidence: 99%

Prescient Diagnostic Analysis for boron nutritional status in soy crops

Traspadini

Wadt

Prado

et al. 2022

Preprint

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Boron is the most limiting micronutrient for soybean yield; therefore, accurate identification of its nutritional status is important for adequate fertilization management and maximize soybean yield potential. Currently, tools for nutritional status interpretation of B, such as the CND and DRIS are used; however, their efficacy is not considered to identify the true nutritional status of B. Here, we investigated the efficacy of these methods to identify the nutritional status of B in 140 commercial soybean crops to obtain nutritional standards for the DRIS and CND methods. In addition, an experiment of B dose calibration (0, 300, 600, 1200 and 1800 g ha-1) was installed to assess the quality of nutritional diagnoses using the PDA. We tested the limits of 0.25, 0.50, and 1.00 for the NRr and values of 1%, 5%, or 10% for YR. The DRIS method was more effective and, on average, its variations increased yield by 27% compared to CND, with the best performance of DRIS when NRr = 1.00 was adopted with 10% for YR. This study highlights the need for reliable and accurate diagnostic methods with global implications for crop sustainability by improving the efficacy of B fertilization programs and crop yield.

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“…Based on the leaf nutritional composition, it is possible to calculate the Diagnosis and Recommendation Integrated System (DRIS) index, which can contribute to more rational fertilization and thus improve productivity (Mourão Filho, 2004;Castamann et al, 2012, Wairegi & Van Asten, 2012. DRIS incorporates the concept of nutritional balance, which considers all nutrients and has a negative relationship with yield.…”

Section: Introductionmentioning

confidence: 99%

Nutritional balance and its relationship to yield in a coffee field: Inferences from geospatial analysis

Silva

Partelli

Gontijo

et al. 2020

Rev. bras. eng. agríc. ambient.

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Information obtained from studies of spatial variability and the Diagnosis and Recommendation Integrated System (DRIS) may contribute to understanding better the relationship between mineral nutrient balance and factors that limit the crop yield. This study shows that nutritionally balanced plants may be associated with low productivity in Conilon coffee fields. The study was carried out on a highly productive Conilon coffee (Coffea canephora) field, in São Mateus, state of Espírito Santo, Brazil. A sample grid was established with 100 points, each point linked to one plant. Twenty pairs of leaves from each plant were collected from productive branches to create a sample for nutritional analysis. The rust incidence (Hemileia vastatrix), the presence of the coffee borer (Hypothenemus hampei), and the physical characteristics of the soil were evaluated in each sampled plant. DRIS and Nutrient Balance Index (NBI) were calculated, and from the yield data, they were characterized using descriptive statistics. Maps were created showing the spatial distribution of the NBI, yield, total sand, and incidence of rust and coffee borer. It was verified the low relationship between nutritional balance and yield in Conilon coffee, suggesting that non-nutritional factors also influenced plant production. In areas of the maps with high NBI, the plant’s nutritional balance was the main limiting factor of production, since most plants in this area produced less than the average productivity of the plants sampled. The use of a geostatistics tool combined with the NBI resulted in better understanding of the relationship between nutritional and non-nutritional variables on the Conilon coffee yield.

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Diagnosis and recommendation integrated system (DRIS) of soybean seed oil content

Cited by 11 publications

References 20 publications

Normas DRIS preliminares para pupunheira cultivada em diferentes sistemas de manejo na região sul-ocidental da Amazônia

Normas DRIS preliminares para pupunheira cultivada em diferentes sistemas de manejo na região sul-ocidental da Amazônia

Prescient Diagnostic Analysis for boron nutritional status in soy crops

Nutritional balance and its relationship to yield in a coffee field: Inferences from geospatial analysis

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