Effects of travertine and flow on leaf retention in Fossil Creek, Arizona

A high-density planting of three southern highbush cultivars was established in 1994 in southwest Florida to test the feasibility of a non-dormant blueberry production system. A non-dormant system involves continuous application of nitrogen throughout fall and winter, which enables the plants to avoid the normal dormancy cycle and the concomitant chilling requirement. Three nitrogen fertilizer rates and two organic soil amendments (muncipal solid waste compost and acidic peat) were evaluated for effects on maintaining plant growth in this system. In general, increasing N rates from 84 to 252 kg·ha–1 increased plant canopy volume, leaf retention, and rate of new vegetative budbreak. Plant height and volume were consistently greater for plants grown in the compost compared to the peat amendment, but there were no differences in leaf retention or vegetative budbreak between the two soil amendments. Flower bud density and fruit yield were increased in plants grown in the compost compared to the peat, while N rate had no effect on either. Plants in this non-dormant system have shown no deleterious growth effects, suggesting that establishing a blueberry planting in a warm winter climate is feasible under the described conditions.

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Vegetative propagation, chemical composition and antioxidant activity of yerba mate genotypes

Plant Genetic Resources ◽

10.1017/s1479262121000150 ◽

2021 ◽

pp. 1-10

Author(s):

Leandro Marcolino Vieira ◽

Renata de Almeida Maggioni ◽

Jéssica de Cássia Tomasi ◽

Erik Nunes Gomes ◽

Ivar Wendling ◽

...

Keyword(s):

Antioxidant Activity ◽

Phenolic Compounds ◽

Vegetative Propagation ◽

Adventitious Rooting ◽

Ilex Paraguariensis ◽

Total Phenolic ◽

Yerba Mate ◽

Total Phenolic Compounds ◽

Leaf Retention ◽

Correlated Components

Abstract Ilex paraguariensis, commonly known as yerba mate, is a tree species native to South America. Its commercial value is due to the manufacturing of teas, with potential also in the pharmacological and cosmetic industries. Vegetative propagation of yerba mate is considered an innovation to the traditional production systems based on sexual propagation. The present study aimed to evaluate the rhizogenic potential and chemical attributes of mini-cuttings from 15 yerba mate genotypes, as well as to verify the correlation between phytochemical and rooting-related variables. Mini-cuttings were collected from a pre-existing mini-clonal hedge and the experimental design was completely randomized, with 15 treatments (genotypes), four replications and 10 mini-cuttings per plot. After 120 days, mini-cuttings were assessed regarding rooting, mortality, callogenesis and leaf retention percentages, percentage of mini-cuttings with both calluses and roots, number of roots and average root length. At the time of collection, subsamples from each plot were used for phytochemical analyses including total phenolic compounds, protein, caffeine and theobromine contents and antioxidant activity. Rooting percentages ranged from 5 to 72.5%, with significant variation among genotypes. Adventitious rooting and phytochemical profile of yerba mate mini-cuttings are genotype-dependent. Leaf retention is a relevant factor in the rooting of yerba mate mini-cuttings and the levels of total phenolic compounds, antioxidants and theobromine present in mini-cuttings are negatively correlated components to Ilex paraguariensis adventitious rooting.

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Leaf Retention

Methods to Study Litter Decomposition ◽

10.1007/978-3-030-30515-4_2 ◽

2020 ◽

pp. 13-20

Author(s):

Arturo Elosegi

Keyword(s):

Leaf Retention

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Effect of Copper, Zinc and Boron on Green Leaf Retention and Grain Yield of Winter and Spring Cereals

Journal of Agricultural Science and Technology B ◽

10.17265/2161-6264/2015.06.001 ◽

2015 ◽

Vol 5 (6) ◽

Author(s):

Syed Shah ◽

Sarah Hookway ◽

Andrew Richards ◽

Carl Flint ◽

Sarah Wilkinson ◽

...

Keyword(s):

Grain Yield ◽

Green Leaf ◽

Spring Cereals ◽

Copper Zinc ◽

Leaf Retention ◽

Effect Of Copper

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Leaf area and intermittent misting on hop plants propagation by stem cuttings

Revista Colombiana de Ciencias Hortícolas ◽

10.17584/rcch.2018v12i2.7652 ◽

2018 ◽

Vol 12 (2) ◽

pp. 508-513

Author(s):

Erik Nunes Gomes ◽

Marília Pereira Machado ◽

José Miola ◽

Cícero Deschamps

Keyword(s):

Leaf Area ◽

Dry Mass ◽

Economic Importance ◽

Humulus Lupulus ◽

Stem Cuttings ◽

Brewing Industry ◽

Humulus Lupulus L ◽

Leaf Retention

Hop (Humulus lupulus L.) is a plant with economic importance due to its use in the brewing industry. The cones produced by the species contain the main substances responsible for the beer’s bitterness and aroma. Hop plants cultivation in Brazil is still incipient and information on efficient methods for its propagation in this context are scarce. The objective of the present study was to evaluate the effect of different leaf areas (two whole leaves, two leaves in half, one whole leaf, one leaf in half and without leaves) in herbaceous stem cuttings planted in environments with and without intermittent misting. The experiment was conducted in a greenhouse in Curitiba-PR, Brazil (25º25’40 “S and 49º16’23” W). After 30 days of planting, the survival, rooting, sprouting and leaf retention percentages, roots number, average roots length and roots and sprouts dry mass were evaluated. Cuttings with one or two whole leaves and two leaves in half in the misting environment showed the highest rooting percentages (between 90.0 and 97.5%). In the without misting environment, the highest values were observed in cuttings with one or two leaves in half and one whole leaf (between 62.5 and 72.5%). Leafless cuttings had low survival percentages (2.5% in both environments). Under intermittent misting conditions it is recommended to prepare stem cuttings with one or two whole leaves and, in the absence of control over the environment humidity, cuttings with one whole leaf are recommended.

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