Results 191 to 200 of about 6,965 (226)

Using Soil and Foliar Analysis to Diagnose the Nutritional Status of Urban Trees

Arboriculture & Urban Forestry, 1995
During the past years, increased knowledge about the nutritional status of solitary trees has led to the development of soil and foliar analysis as a tool for the assessment of both chloride damage and nutrient deficiencies in The Netherlands. Data on threshold levels per tree species and element proportions are summarized. This enables the arborist to
Kopinga, J., van den Burg, J.
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Diagnosing the Sulfur Requirements of Corn and Wheat using Foliar Analysis

Soil Science Society of America Journal, 1981
Abstract Beaufils' diagnosis and recommendation integrated system (DRIS) has been successfully applied in the past to the diagnosis of NPK imbalances in various crops. The DRIS approach utilizes indices that reflect the degree of nutrient imbalance by measuring the extent to which a particular nutrient deviates ...
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The Use of Seasonal Foliar Color Changes to Diagnose Stress in Eastern White Pine

Arboriculture & Urban Forestry, 1990
Eastern white pine is one of the most popular landscape trees in the Eastern United States, and its decline has been observed by the authors for over 20 years in Virginia. To the arborist, landscaper, and tree owner this disease is very hard to detect in its early stages because of the complex nature and variability of the decline syndrome. It might be
Michael Weaver, R. Jay Stipes
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MISLEADING ZINC DEFICIENCY DIAGNOSES IN POME FRUIT AND INAPPROPRIATE USE OF FOLIAR ZINC SPRAYS

Acta Horticulturae, 2002
Many researchers and field managers consider Zn the most limiting micronutrient for tree fruit production. A threshold concentration of 18-20 ppm in summer shoot leaves is considered adequate in most world fruit growing regions. In a foliar analysis survey of high yielding pear orchards, the mid summer Zn concentrations varied from 12 to 16 ppm.
E.E. Sánchez, T.L. Righetti
openaire   +1 more source

Problems associated with the use of foliar analysis for diagnosing boron toxicity in barley

Plant and Soil, 1990
The effects of evapotranspiration conditions on the distribution of B in leaves and critical values for B toxicity measured in shoots were examined in solution culture experiments with barley.
Ross O. Nable, Jeffrey G. Paull, Brian Cartwright   +2 more
openaire   +1 more source

Soil Thresholds Update for Diagnosing Foliar Calcium, Potassium, or Phosphorus Deficiency of Sugar Maple

Communications in Soil Science and Plant Analysis, 2013
The accuracy of suggested soil thresholds for diagnosing calcium (Ca), potassium (K), and phosphorus (P) deficiencies in sugar maple (Acer saccharum Marsh.) stands was tested and updated when possible. With respect to Ca, the combination of Ca saturation of the mineral B horizon (threshold: ≤28.4%), and the humus Ca/magnesium (Mg) ratio (≤5.322) and ...
Rock Ouimet, Jean-David Moore, Louis Duchesne   +2 more
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Diagnose foliar da abóbora submetida a diferentes níveis de salinidade e doses crescentes de nitrogênio

AGROPECUÁRIA CIENTÍFICA NO SEMIÁRIDO, 2014
O conhecimento do estado nutricional da planta e a exportação de nutrientes pela cultura podem ajudar a melhorar a qualidade e a produtividade de frutos. Este trabalho teve como objetivo avaliar o estado nutricional da abobora cultivar bárbara sob diferentes níveis de salinidade e doses de nitrogênio.
Max Venicius Teixeira, Rozana Maria De Sousa Lima, Sérgio Weine Paulino Chaves, Arthur Manoel Alves de Medeiros, Nicolly Kalliliny Cavalcanti Silva, Fabiano Luiz de Oliveira   +5 more
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DIAGNOSE FOLIAR DE POTÁSSIO EM CULTIVARES DE CANA-DE-AÇÚCAR SOB IRRIGAÇÃO SUBTERRÂNEA: FOLHA +1 E +3

2021
Objetivou-se avaliar a diferença do estado nutricional de potássio em cultivares de cana de açúcar sob irrigação subterrânea por meio da coleta da folha+1 e folha+3. O experimento consistiu em três fatores de manejo de irrigação e cinco cultivares de cana-de-açúcar, sendo eles irrigação suplementar, irrigação deficitária e sequeiro e as cultivares de ...
Thayane Leonel Alves, José de Arruda Barbosa, Evandro Freire Lemos, Alexandre Barcellos Dalri, Antônio Michael Pereira Bertino, Jonathan dos Santos Viana   +5 more
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DIAGNOSE FOLIAR DE NITROGÊNIO EM CULTIVARES DE CANA-DE-AÇÚCAR SOB IRRIGAÇÃO SUBTERRÂNEA: FOLHA +1 E +3

2021
Objetivou-se avaliar a diferença do estado nutricional de nitrogênio em cultivares de cana de açúcar sob irrigação subterrânea por meio da coleta da folha+1 e folha+3. O experimento consistiu em três fatores de manejo de irrigação e cinco cultivares de cana-de-açúcar, sendo eles irrigação suplementar, irrigação deficitária e sequeiro e as cultivares de
Thayane Leonel Alves, José de Arruda Barbosa, Alexandre Barcellos Dalri, Evandro Freire Lemos, Jonathan dos Santos Viana, Antônio Michael Pereira Bertino   +5 more
openaire   +1 more source

Effects of rainfall on the use of foliar analysis for diagnosing boron toxicity in field-grown wheat

Plant and Soil, 1992
The effect of rain on foliage elemental composition, especially B, was assessed using samples of wheat collected at three harvests from a field trial conducted in soil containing excessive levels of B. Moderate rainfall substantially decreased both the B concentration and content of whole shoots and young leaves.
Ross O. Nable, David B. Moody
openaire   +1 more source