Results 41 to 50 of about 239 (129)

Interference of Urochloa plantaginea on Morphophysiology and Yield Components of Black Beans

open access: yesJournal of Agricultural Science, 2019
Among the factors which affect crop productivity, there are weeds which compete for environment resources. The objective of this work was to determine the periods of interference of alexandergrass on the morphophysiology and productivity components of black beans. The experiment was conducted in a complete randomized block design with four replications.
Milena Barretta Franceschetti   +11 more
openaire   +2 more sources

Genetic Diversity and Population Structure of Brachiaria Species and Breeding Populations

open access: yesCrop Science, Volume 57, Issue 5, Page 2633-2644, September–October 2017., 2017
Several apomictic Brachiaria (Trin.) Griseb. (syn. Urochloa P. Beauv.) species are commercially important tropical forage grasses, but little is known about the interspecific diversity and population structure within this genus. Previously published genus‐level Brachiaria phylogenies were conducted with few genotypes and contradicted well‐established ...
Narda Jimena Triviño   +7 more
wiley   +1 more source

Biomass flow and defoliation pattern in alexandergrass fertilized with nitrogen

open access: yesBioscience Journal, 2017
The determination of biomass flows can assist on improving pasture fertilization techniques, contributing to identify the best management methods and, in relation the use of fertilizers. Nitrogen deficiency in pastures can reduce forage production.
Anelise Pereira Hundertmarck   +7 more
doaj   +3 more sources

Effect of supplementation frequency in feeding behavior, displacement patterns and forage intake of beef heifers

open access: yesSemina: Ciências Agrárias, 2017
Our work was carried out to evaluate forage intake, feeding behavior and displacement patterns of beef heifers fed exclusively on pasture or receiving oat grain, either daily (“frequent”) or from Monday to Friday (“infrequent”), in two phenological ...
Maria José de Oliveira Sichonany   +7 more
doaj   +3 more sources

Selectivity and efficiency of herbicides in weed control on sweet sorghum

open access: yesPesquisa Agropecuária Tropical, 2016
The lack of registered herbicides for weed control in sweet sorghum has been a limiting production factor. This study aimed at evaluating the selectivity of herbicides in sweet sorghum and weed control efficiency.
Leandro Galon   +4 more
doaj   +1 more source

Weed Vegetation Structure in an Area of Organic Acerola Cultivation, Parnaíba, Piauí, Brazil [PDF]

open access: yesPlanta Daninha, 2020
: This study aimed to identify and quantify the weed species in an area of organic acerola cultivation in the Distrito de Irrigação dos Tabuleiros Litorâneos do Piauí (DITALPI) in Parnaíba, Piauí, Brazil.
P.H.S. SOUSA   +3 more
doaj   +1 more source

Interference and economic damage level of alexandergrass on carioca type beans

open access: yesTechnology in Agronomy
Determining the competitive ability of bean cultivars and the economic damage level (EDL) caused by alexandergrass is important for the implementation of integrated weed management.
Leandro Galon   +7 more
doaj   +1 more source

Effect of weather conditions on efficacy and residue amount of two acetyl‐CoA carboxylase inhibiting herbicides in spinach

open access: yesWeed Research, Volume 65, Issue 4, July/August 2025.
Abstract The risk of contamination by the acetyl‐CoA carboxylase inhibiting herbicides fluazifop‐P‐butyl and quizalofop‐P‐ethyl is significant, particularly in short‐season vegetables like spinach. This study examined meteorological factors affecting their efficacy and residue levels in spinach. Field trials were conducted in Prague, Czech Republic, in
Miroslav Jursík   +4 more
wiley   +1 more source

Shifts in grasses diversity patterns between two contrasting 40‐year climate periods in tropical dry islands

open access: yesEcosphere, Volume 15, Issue 4, April 2024.
Abstract Grasses are one of the most successful and dispersed plant families worldwide and their environmental and economic values are widely acknowledged. They dominate the landscape of Cabo Verde, the southernmost and driest archipelago of Macaronesia, and are relevant natural resources for local populations, but a comprehensive evaluation of their ...
Maria Cristina Duarte   +7 more
wiley   +1 more source

Ingestive behavior, performance and forage intake by beef heifers on tropical pasture systems

open access: yesRevista Brasileira de Zootecnia, 2013
The experiment was carried out to evaluate forage intake, performance and ingestive behavior of beef heifers. Productive, structural and chemical characteristics of the pasture were also evaluated. The experimental design was completely randomized in a 3
Renato Alves de Oliveira Neto   +7 more
doaj   +1 more source

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