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Amostragem de plantas em cafeeiro para avaliação do estado nutricional
(2015-01-01)
The foliar fertilization assists programs in order to obtain higher yields, however, it is essential to know the ideal number of plants to be sampled. The study aimed to determine in commercial coffee plantations, subjected ...
Leaf sampling to assess mineral nutrient composition of physic nut plants (Jatropha curcas L.)
(2016-01-01)
The physic nut is an important plant for biodiesel production. However, research is still lacking as to the best leaves to be sampled in determining ideal mineral content. It is important that all factors causing variations ...
Leaf position and phenological stage of branch for leaf analysis of Jatropha plantsPosição da folha e estádio fenológico do ramo para análise foliar do pinhão-manso
(2011-01-01)
Leaf analysis is an important tool for prediction of nutritional disorders and evaluation of nutritional status of plants. This procedure only can be effective if samples are standardized regarding leaf position and ...
Fertilisation residues alter leaf scleromorphy in an evergreen savannah shrub (Maprounea brasiliensis, Euphorbiaceae)
(2013-07-11)
In the present study, we examined how residues of nitrogen (N), phosphorus (P) and calcium (Ca) fertilisers affect leaf anatomical traits in Maprounea brasiliensis (Euphorbiaceae), a typical and dominant cerrado (Brazilian ...
Fertilisation residues alter leaf scleromorphy in an evergreen savannah shrub (Maprounea brasiliensis, Euphorbiaceae)
(2013-07-11)
In the present study, we examined how residues of nitrogen (N), phosphorus (P) and calcium (Ca) fertilisers affect leaf anatomical traits in Maprounea brasiliensis (Euphorbiaceae), a typical and dominant cerrado (Brazilian ...
The within-population variability of leaf spring and autumn phenology is influenced by temperature in temperate deciduous trees
(2019-01-01)
Leaf phenology is a major driver of ecosystem functioning in temperate forests and a robust indicator of climate change. Both the inter-annual and inter-population variability of leaf phenology have received much attention ...
Accuracy and limitations for spectroscopic prediction of leaf traits in seasonally dry tropical environments
(2020-07-01)
Generalized assessments of the accuracy of spectroscopic estimates of ecologically important leaf traits such as leaf mass per area (LMA) and leaf dry matter content (LDMC) are still lacking for most ecosystems, and ...
Assessing salivary progesterone in coca-leaf chewing populations
(Population Studies Center, University of Michigan, 1990-05)
ABSTRACT
Although there is evidence for reduced fertility in Andean and Himalayan populations at higher
altitudes, factors other than hypoxia may be primarily responsible. A potentially valuable
approach in the investigation ...