Results 21 to 30 of about 9,743,245 (300)

Growth of mountain pine (Pinus mugo Turra) in relation to the use of other tree species

open access: yesJournal of Forest Science, 2006
In summit parts of the Orlické hory Mts., massive dieback of forests occurred during an air pollution/ecological disaster in the 70s to the 80s of the 20th century.
Z. Špinlerová, M. Martinková
doaj   +1 more source

Temporary nutrient deficiency - a difficult case for diagnosis and prognosis by plant analysis [PDF]

open access: yes, 2000
Plant analysis aims to either detect deficiency at the time of sampling (diagnosis) or predict its occurrence at a later stage of growth (prognosis). Its use is based on the presumption that the plant nutrient status will either be constant with plant ...
Bell, R.W.
core   +2 more sources

Demographic Growth Analysis

open access: yesEcology, 1990
We present demographic growth analysis, a hybrid approach that retains the formal mathematical structure of growth analysis, while incorporating the advantages of modular demography.
James B. McGraw, Keith Garbutt
openaire   +2 more sources

An attempt at describing the growth of live organisms by means of a difference-differential equation

open access: yesActa Societatis Botanicorum Poloniae, 2014
An attempt is made to create a formal growth model based on a difference-differential equation. The solution of this type of equation is a function of a continuous variable and of a variable assuming natural values. By using the Laplace transformation in
Andrzej Gregorczyk
doaj   +1 more source

Growth analysis of Scots pine (Pinus sylvestris L.) seedlings cultivated in a wide range of experimental conditions

open access: yesActa Societatis Botanicorum Poloniae, 2014
The work of this laboratory for many years with Scots pine seedlings has allowed to collect quite unique information as to the accumulation and distribution of dry matter and the reaction of plants to various environmental influences. It seems worthwhile
Włodzimierz Żelawski   +4 more
doaj   +1 more source

Influence of weather and nutrients (FYM, N and P) on RGR, LAD, NAR and CGR to determine the productivity of maize, wheat and green gram in a cropping system

open access: yesJournal of Agrometeorology, 2022
In a field experiment, conducted during 2018-19 and 2019-20 at the Research Farm, Indian Agricultural Research Institute, New Delhi, factorial combinations of two levels of FYM (0, 10 Mg ha−1) applied to maize; four levels of nitrogen (0, 60, 120, 180 ...
ALIMAMY KAMARA   +5 more
doaj   +1 more source

Modern Integrated Associations: Comparative Analysis of Economic Growth Factors [PDF]

open access: yes, 2015
In the article, the results of the research, which purpose is to ground and assess the factors of economic growth of regional integration communities and national economies of member countries that develop them, are presented.
Doroshenko, S. V.   +2 more
core   +1 more source

Effect of irradiance during acclimatization on content of proline and phytohormones in micropropagated Ulmus minor

open access: yesBiologia Plantarum, 2013
This study aimed to investigate the effects of irradiance on plant growth and content of proline and phytohormones during ex vitro acclimatization of micropropagated Ulmus minor plants. In vitro rooted plants were acclimatized to ex vitro conditions in a
M. C. Dias   +5 more
doaj   +1 more source

Relações entre crescimento vegetativo e acúmulo de nitrogênio em duas cultivares de arroz com arquiteturas contrastantes The relationship between vegetative growth and nitrogen accumulation in two rice cultivars with contrasting architecture

open access: yesActa Botânica Brasílica, 2008
Foram estudados, mediante análise do crescimento, o acúmulo de biomassa e nitrogênio (N) e sua eficiência de utilização, durante o estádio de crescimento vegetativo, em duas cultivares de arroz (Oryza sativa L.) com arquiteturas contrastantes: IAC-4440 ...
Marcel Giovanni Costa França   +3 more
doaj   +1 more source

Ground Based Hyperspectral Imaging to Characterize Canopy-Level Photosynthetic Activities

open access: yesRemote Sensing, 2020
Improving plant photosynthesis provides the best possibility for increasing crop yield potential, which is considered a crucial effort for global food security.
Yu Jiang   +4 more
doaj   +1 more source

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