Results 11 to 20 of about 321,131 (265)

Approach to Petiole Sap Nutritional Diagnosis Method by Empirical Model Based on Climatic and Growth Parameters

open access: yesAgronomy, 2020
The aim of this work is to evaluate the relationship between the nutrient concentration in petiole sap and different agronomic and climatic variables for a tomato crop grown in a greenhouse in Mediterranean conditions. In addition, the persistence of the
Alfonso Llanderal   +6 more
doaj   +1 more source

Zinc Variability in Pecan Orchards: Implications for Leaf Sampling and Nutrient Recommendations

open access: yesHortScience, 2022
Analysis of composite pecan leaf samples typically used to determine need for nutrient applications does not account for variability among trees in the sampled area.
Cyrus A. Smith   +5 more
doaj   +1 more source

Leaf Nutrient Status of Commercially Grown Strawberries in Latvia, 2014–2022: A Possible Yield-Limiting Factor

open access: yesPlants, 2023
The present study was carried out to evaluate the leaf nutrient status of commercially grown strawberries in Latvia during 2014–2022. The results of N, P, K, Ca, Mg, S, Fe, Mn, Zn, Cu, Mo and B in 200 strawberry leaf samples from different strawberry ...
Anita Osvalde   +3 more
doaj   +1 more source

Sufficiency ranges (sr) and deviation from optimum percentage (dop) references for leaf blade and petiole analysis in ‘Red Grenache’ grapevines

open access: yesOENO One, 2015
Aim: To obtain specific references for the nutritional diagnosis of ten essential nutrients for leaf blade and petiole of ‘red Grenache’ (Vitis vinifera L.).
Ana Benito   +4 more
doaj   +1 more source

Leaf nutrient contents of rangpur lime rootstock as afected by N, P, K, Ca and S fertilization Concentrações foliares do porta-enxerto limoeiro 'cravo' em função da adubação N, P, K, Ca e S

open access: yesScientia Agricola, 2004
Analysis of leaf nutrient contents can demonstrate plant nutritional status, identify symptoms of deficiency and toxicity, and evaluate the need to adjust fertilization programs.
Jonas Ruschel   +4 more
doaj   +1 more source

Pendulum analysis by leaf functions and hyperbolic leaf functions [PDF]

open access: yesApplied Mathematical Sciences, 2019
The mathematical model representing the equation of motion of a pendulum is nonlinear. Solutions that satisfy the equation cannot be represented by elementary functions, such as trigonometric functions. To solve such problems, it is common to linearize the nonlinear equations and derive approximate numerical solutions and exact solutions. Applying such
openaire   +2 more sources

Nutritional standards through Integrated Differential Diagnosis (IDD) in pomegranate (Punica granatum L.)

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2023
The foliar analysis is a useful tool to detect the nutritional status of plants, predict future problems in the reproductive cycles of fruit production and implement preventive and corrective measures to achieve a mineral balance in fruit trees ...
Nubia G. TORRES-BELTRÁN   +3 more
doaj   +1 more source

An analysis of leaf growth in sugar beet.

open access: yesAnnals of Applied Biology, 1985
SUMMARYThe influence of season, and certain agronomic treatments (irrigation, nitrogen fertiliser, density of planting and sowing date) on leaf number were analysed in a series of sugar‐beet crops grown during the five seasons 1978‐82. Leaf appearance was a linear function of thermal time (accumulated temperature above 1°C) and could be described by ...
Milford, G. F. J.   +2 more
openaire   +2 more sources

Potassium Fertilizer Recommendations for Sugarcane on Florida Mineral Soils

open access: yesEDIS, 2022
This publication is intended primarily for Florida sugarcane growers, but it may also be useful to researchers and others interested in sugarcane nutrition.
J. Mabry McCray
doaj   +3 more sources

Leaf blade and petiole nutritional evolution and variability throughout the crop season for Vitis vinifera L. cv. Graciano

open access: yesSpanish Journal of Agricultural Research, 2015
An adequate nutritional state of a crop can be kept by means of a well-designed fertilization plan based on the assessment of the nutrient availability throughout the growing season.
Natalia Dominguez   +4 more
doaj   +1 more source

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