Results 161 to 170 of about 10,089,723 (334)

Rendimento, área foliar de feijoeiro e armazenamento de água influenciados pela adição de massa fresca de leucena (Leucaena leucocephala Lam) à superfície do solo. [PDF]

open access: yes, 2012
O objetivo deste estudo foi avaliar os efeitos da adição, na superfície do solo, de diferentes quantidades de matéria fresca de Leucena sobre a área foliar e o rendimento de grãos de feijoeiro e o armazenamento de água do solo em um sistema de produção ...
CRUZ, J. C.   +3 more
core  

Exploring marking methods for the predatory hoverfly Sphaerophoria rueppellii (Diptera: Syrphidae)

open access: yesInsect Science, EarlyView.
As important pollinators and predators of aphids, hoverflies play an important role in ecosystems. This study focuses on identifying the best marking technique for the model species Sphaerophoria rueppellii that can be used to track hoverfly feeding and oviposition sites, evaluating three methods: rubidium (RbCl), fluorescein, and fluorescent dusts ...
Michele Violi   +4 more
wiley   +1 more source

Análise espacial do índice de área foliar de pastagens utilizando Crop Circle e imagem WorldView-2. [PDF]

open access: yes, 2017
Dados de sensoriamento remoto vêm sendo aplicados em diversos estudos da vegetação. Contudo, no Brasil são raras as pesquisas que utilizam técnicas de sensoriamento remoto na análise da área foliar de pastagens.
ANDRADE, R. G.   +4 more
core  

Offspring performance does not explain oviposition preference in the leafminer Stigmella sorbi (Lepidoptera: Nepticulidae): a tri‐trophic perspective

open access: yesInsect Science, EarlyView.
We studied oviposition site selection in a leaf‐mining moth (Stigmella sorbi) on rowan trees (Sorbus aucuparia) in northwestern Russia, assessing larval performance across different shoot types, leaf positions, and leaflets. Larval survival was highest on long vegetative shoots, yet females showed no preference for these optimal sites.
Mikhail V. Kozlov, Vitali Zverev
wiley   +1 more source

Jasmonates enhance plants tolerance grown in Cd‐contaminated environments: A comprehensive overview

open access: yesAnnals of Applied Biology, EarlyView.
Jasmonates (JAs) enhance plant tolerance to cadmium (Cd) stress by activating antioxidant defences but may reduce Cd uptake, limiting their effectiveness for phytoremediation. This review compiles studies that evaluated the effects of JA application on plants grown in Cd‐contaminated environments. Abstract Cadmium (Cd) is a toxic heavy metal and one of
Raja Yamma Rodrigues Souza   +2 more
wiley   +1 more source

Alocação da biomassa e correlações morfofisiológicas em leguminosas forrageiras com hábitos de crescimento contrastantes

open access: yesScientia Agricola, 2002
A análise da alocação da biomassa e a correlação entre variáveis morfofisiológicas permitem maior entendimento do estabelecimento, produção e persistência de espécies perenes, em trabalhos de melhoramento genético, manejo e ecologia de plantas ...
Scheffer-Basso Simone Meredith   +2 more
doaj  

Morfoanatomia foliar em mudas de Schinus terebinthifolius sob diferentes níveis de saturação hídrica. [PDF]

open access: yes, 2019
As características morfológicas e anatômicas foliares de espécies vegetais são importantes indicadores de sua ecologia e de seus hábitats. Objetivou-se caracterizar a plasticidade fenotípica de Schinus terebinthifolius Raddi em diferentes condições de ...
ANGELO, A. C.   +5 more
core  

Global field trials show the advantages of beta regression compared with logit transformation and quasi‐likelihood for the analysis of percentage plant disease severity

open access: yesAnnals of Applied Biology, EarlyView.
Disease severity in crop protection field trials is commonly assessed as a proportion represented as a percentage. Traditional statistical analysis uses transformation to logit or angle. This study compares analyses based on the beta distribution and the quasi‐likelihood method with the logit transform using a large global data set of field trials ...
Boby Mathew   +2 more
wiley   +1 more source

A systematic review on research trends and commercialised entomopathogenic nematodes: A global perspective

open access: yesAgricultural and Forest Entomology, EarlyView.
Out of 136 identified EPNs, only 18 (8 Steinernema and 6 Heterorhabditis) are commercialised globally, highlighting a major gap between discovery and application. High production costs and inconsistent field efficacy are the leading obstacles to the widespread commercialisation of EPN‐based biocontrol products.
Ndivhuwo Ramatsitsi   +2 more
wiley   +1 more source

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