Results 81 to 90 of about 17,840 (262)

A study of the effect of the frequency of spring cutting on the regrowth and resulting yield of lucerne (Medicago sativa L.) : a thesis presented in partial fulfillment of the requirements for the degree of Master of Agricultural Science at Massey University [PDF]

open access: yes, 1968
There is abundant evidence to show that the yield, stand, chemical composition and the feeding value of lucerne may be materially affected by varying the cutting interval. Therefore, the purpose of the field experiment reported here was to determine the
Tsuma, Francis
core  

Spatio-temporal modelling of forest monitoring data: Modelling German tree defoliation data collected between 1989 and 2015 for trend estimation and survey grid examination using GAMMs

open access: yes, 2018
Spatio-temporal modelling of tree defoliation data of German forest condition survey is presented. In the present study generalized additive mixed models were used to estimate the spatio-temporal trends of defoliation of the main tree species from 1989 ...
Augustin, Nicole H.   +2 more
core   +1 more source

Internal physiological drivers of leaf development in trees: Understanding the relationship between non‐structural carbohydrates and leaf phenology

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo   +8 more
wiley   +1 more source

Below the leaves: Integrating above‐ and below‐ground phenology for earth‐system predictability

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Almost every aspect of biological systems has phenology—a pattern in activity or function linked to annual cycles. Most terrestrial phenology research focusses on leaves, the onset of leaf out or senescence.
Kendalynn Morris, Richard Nair
wiley   +1 more source

Long-term monitoring and microbiological control programs against lepidopteran defoliators in Sardinian cork oak forests (Italy)

open access: yesAnnals of Silvicultural Research, 2020
The gypsy moth, Lymantria dispar (L.), and the tent caterpillar, Malacosoma neustrium (L.), are the main cork oak, Quercus suber L., pests in the Mediterranean area and cause complete defoliation in large forest districts.
Andrea Lentini   +5 more
doaj   +1 more source

Impact of pine looper defoliation in Scots pine [PDF]

open access: yes, 2003
Widespread defoliation of forests caused by insects or fungi cause economic losses throughout the world. Successful outbreak management involves cost/benefit estimation and requires knowledge of potential yield losses. Currently, such knowledge is scarce.
Cedervind, Jan
core  

Distribution of First Instar Gypsy Moths (Lepidoptera: Lymantriidae) Among Saplings of Four Tree Species Common in the Great Lakes Region [PDF]

open access: yes, 2018
We examined the inter-tree distribution of first instar gypsy moth larvae under natural dispersal conditions in the field in Michigan in 1991. The study focused on saplings of northern red oak (Quercus rubra), white oak (Q. alba), red maple (Acer rubrum),
Stoyenoff, J. L, Witter, J. A
core   +3 more sources

Landscape, stand and tree characteristics influence the distribution of lightning damage in Central African forests

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The impact of lightning in tropical forests remains uncertain. Specifically, the factors that influence the spatial distribution of lightning damage within forests remain unknown.
Bianca Zoletto   +14 more
wiley   +1 more source

A study on the effect of sward conditions on herbage accumulation during winter and spring : a thesis presented in partial fulfilment of the requirements for the degree of Master of Applied Science in Plant Science at Massey University [PDF]

open access: yes, 1999
Recently there has been an increased trend for farmers to adopt farm systems that operate at a reduced stocking rate, with the aim to improve per hectare production through achieving higher production per cow.
Hughes, Fulton Paul
core  

Senescent trees stabilize aboveground wood net primary production immediately after disturbance [PDF]

open access: yes, 2020
In the United States, forests sequester 17% of national carbon (C) emissions annually (UGCRP, 2018), however shifting forest disturbances threaten the stability of this essential C sink.
Grigri, Maxim S
core   +2 more sources

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