Results 11 to 20 of about 262 (132)

Effects of canopy connectivity on the arboreal ant community in coffee shade trees

open access: yesBiotropica, Volume 55, Issue 6, Page 1106-1113, November 2023., 2023
We manipulated connectivity between the crowns of large shade trees and found more species and increased compositional similarity in connected crowns. Differences in connectivity in the upper canopy may be important in structuring differences in ant communities in shaded agricultural systems and unmanaged forests.
fern Wildtruth, Ivette Perfecto
wiley   +1 more source

Does biochar contribute to close nutrient cycles of tree plantations on degraded Ultisols in the Ecuadorian Amazonia?

open access: yesSoil Use and Management, Volume 39, Issue 1, Page 429-440, January 2023., 2023
Abstract The use of biochar is expected to improve soil fertility and close nutrient cycles in degraded strongly weathered tropical soils. We, therefore, hypothesized that biochar amendment to tree plantations (a) increases nutrient fluxes with litterfall alone and with mineral fertilizer plus lime and (b) reduces N losses reflected by lower δ15N ...
Esthela Margarita González Sarango   +2 more
wiley   +1 more source

Pest categorisation of Lasiodiplodia pseudotheobromae

open access: yesEFSA Journal, Volume 21, Issue 1, January 2023., 2023
Abstract The EFSA Plant Health Panel performed a pest categorisation of Lasiodiplodia pseudotheobromae, a clearly defined fungus of the family Botryosphaeriaceae, which was first described in 2008 as a cryptic species within the L. theobromae complex.
EFSA Panel on Plant Health (PLH)   +24 more
wiley   +1 more source

Integrating effects of neighbor interactions for pollination and abiotic resources on coffee yield in a multi‐strata agroforest

open access: yesBiotropica, Volume 54, Issue 5, Page 1226-1237, September 2022., 2022
Animal‐pollinated plants interact with neighbors for both abiotic resources and pollination, but few studies have compared the relative magnitude of these effects, particularly in agroecosystems. This study evaluated the effects of neighboring plants at three vertical strata (herbs, coffee bushes, and canopy trees) on pollen deposition, fertilization ...
Gordon Fitch   +4 more
wiley   +1 more source

Does biochar improve nutrient availability in Ultisols of tree plantations in the Ecuadorian Amazonia?

open access: yesSoil Science Society of America Journal, Volume 86, Issue 4, Page 1072-1085, July/August 2022., 2022
Abstract The application of biochar to strongly weathered soils is thought to supply nutrients and improve nutrient retention. We hypothesized that biochar increases (a) total N, bioavailable macronutrient (NH4–N, P, K, Ca, Mg), micronutrient (Fe, Mn, Zn, Cu), and plant‐beneficial Na concentrations; and (b) nutrient retention in the topsoil.
Esthela Margarita Gonzalez Sarango   +3 more
wiley   +1 more source

Commodity risk assessment of Juglans regia plants from Turkey

open access: yesEFSA Journal, Volume 19, Issue 6, June 2021., 2021
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. This Scientific Opinion covers the plant health risks posed by 2‐year‐old grafted bare rooted plants for ...
EFSA Panel on Plant Health (PLH)   +27 more
wiley   +1 more source

Biochar amendment did not influence the growth of two tree plantations on nutrient‐depleted Ultisols in the south Ecuadorian Amazon region

open access: yesSoil Science Society of America Journal, Volume 85, Issue 3, Page 862-878, May/June 2021., 2021
Abstract The literature suggests that biochar increases the fertility of degraded, nutrient‐poor tropical soils. We hypothesized that the addition of biochar (a) increases tree growth in two plantations on Ultisols in the south Ecuadorian Amazon region, (b) reduces litterfall during the dry season because the soil remains moister, and (c) improves the ...
Esthela M. Gonzalez Sarango   +4 more
wiley   +1 more source

Commodity risk assessment of Persea americana from Israel

open access: yesEFSA Journal, Volume 19, Issue 2, February 2021., 2021
Abstract The EFSA Panel on Plant health was requested to prepare and deliver risk assessments for commodities listed in the relevant Implementing Acts as ‘High risk plants, plant products and other objects’ (Commission Implementing Regulation (EU) 2018/2019 establishing a provisional list of high risk plants, plant products or other objects, within the
EFSA Panel on Plant Health (PLH)   +25 more
wiley   +1 more source

Morphophysiological Evaluation of Schizolobium Parahyba Var. Amazonicum and Eucalyptus urograndis Growing in Different Levels of Shading

open access: yesFloresta e Ambiente, 2022
This study aimed to identify the best shade level for the growth of Schizolobium parabyba var. amazonicum and Eucalyptus urograndis seedlings to obtain more resilient seedlings with higher quality. We used an entirely randomized design was used, in a 2 x
Hygor Gomes de Almeida Sousa   +7 more
doaj   +1 more source

Occurrence of Pantophthalmus kerteszianus and P. chuni (Diptera: Pantophthalmidae) on parica in Para State, Brazil Ocorrência de Pantophthalmus kerteszianus e P. chuni (Diptera: Pantophthalmidae) em paricá, no Estado do Pará

open access: yesPesquisa Florestal Brasileira, 2010
<p>This is the first register of Pantophthalmus kerteszianus Enderlein e P. chuni Enderlein (Diptera: Pantophthalmidae) attacking parica trees [Schizolobium parahyba (Vell.) S. F. Blake var. amazonicum (Huber ex Ducke) Barneby] in Paragominas, Para
Alexandre Mehl Lunz   +4 more
doaj   +1 more source

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