A5090526011- Weed Control and Herbicide Applications
- Seed Germination and Physiology
- Rice Cultivation and Yield Improvement
- Plant tissue culture and regeneration
- Growth and nutrition in plants
- Plant responses to water stress
- Leaf Properties and Growth Measurement
- Legume Nitrogen Fixing Symbiosis
- Irrigation Practices and Water Management
- Climate change impacts on agriculture
- Allelopathy and phytotoxic interactions
- Biological Control of Invasive Species
- Genetics and Plant Breeding
- Seed and Plant Biochemistry
- Potato Plant Research
- Agricultural pest management studies
- Soil Management and Crop Yield
- Soybean genetics and cultivation
- Crop Yield and Soil Fertility
Universidade Federal de Santa Maria
2021-2025
ABSTRACT: Weedy rice (Oryza sativa L.) is the most important weed in irrigated cultivation, being one of main factors limiting cereal productivity Rio Grande do Sul (RS). Thus, this study determined effect pre-emergent herbicide use autumnal management on control and reduction weedy seed bank. Field experiments were conducted a randomized complete block design with four replications commercial production area 2021/22 2022/23 growing seasons Dom Pedrito The scheme used was factorial, factor A...
Abstract Three‐lobe morning glory ( Ipomoea triloba L.) is an annual weed, which presents vigorous growth, long cycle, and tolerance to glyphosate. Thus, knowledge of aspects related germination behavior in the seed bank this species are essential for adoption appropriate management practices reduce population agricultural fields. Therefore, objective work was characterize requirements three‐lobe germination, perform field emergence modeling using thermal hydrothermal time models, determine...
Abstract Most studies about yield potential (Yp) of modern rice ( Oryza sativa L.) varieties have been grown under tropical conditions Asia, and little is known the Yp in subtropics Brazil, biggest producer outside Asia. Playing a key role global production, it necessary to estimate amount that Brazil can potentially produce. The objective this study provide estimations southern by using SimulArroz v1.1 ORYZA v3 models. Models were calibrated evaluated with data collected from five growing...
Abstract Identifying the causes of yield gap (Yg) is essential to understand and take proactive measures improve crop management factors. Brazil country in Americas with highest area flooded rice ( Oryza sativa L.) Rio Grande do Sul (RS) state accounts for 73% Brazilian production. The objective was determine potential (Yp) Yg identify key factors associated high (HY) low (LY) farms across production regions RS, Brazil. Yield practices data from farmers were collected by a survey that...
Arrowleaf sida (Sida rhombifolia L.) is a weed that has fibrous stem, aggressive root system and waxy leaves can hinder herbicide absorption. Based on knowledge of the environmental requirements for germination this species, it possible to predict emergence assist in integrated management. The aim investigation was characterize air temperature soil water potential arrowleaf germination, model field using thermal hydrothermal time models evaluate longevity seed bank. Laboratory experiments...
This study aimed to assess the efficacy of commonly used post-emergence herbicides under flooded rice fields, for Conyza spp. control. The greenhouse experiment employed a factorial setup with factor A denoting presence or absence water layer post-application, and B representing different herbicides, C. sumatrensis. In field trials, were applied when plantation was on V3 stage. Evaluations control (%), roots shoot dry weight spp., as well injury number grains per panicle, grain yield (ha−1)...
Abstract To develop models capable of predicting the emergence hairy beggarticks and assist integrated management, it is fundamental to have knowledge environmental factors that influence germination species. The objective this study was estimate temperature water potential cardinals for germination, longevity its seed bank, a model in field. Experiments were carried out laboratory determine base germination. Eight different temperatures (10.0, 15.0, 20.0, 25.0, 30.0, 35.0, 40.0, 45.0°C), 10...
ABSTRACT: Italian ryegrass (Lolium multiflorum Lam.) is considered one of the main winter cover crops in southern Brazil; however, it a weed species with record being resistant to several herbicides. The settlement this agricultural areas occurs through seed bank soil, and measures that interfere production can assist its management. present study evaluated phytotoxicity, production, quality seeds application herbicides 2,4-D saflufenacil at different stages development. Three trials were...
Chickpea is a winter legume with prospects for worldwide consumption growth, mainly demanded by Asian countries. Thus, studies on its such as the leaf area (LA), are important to determine proper management practices cultivation. The objective of this work was mathematical model able estimate (LA) chickpea in non-destructive method. For this, field experiment carried out county Santa Maria (RS), five cultivars available national market. Several leaves each cultivar were collected, and their...
Existe um interesse crescente pelo uso de inoculantes contendo bactérias promotoras crescimento plantas (BPCP), as quais também podem incrementar a produtividade das culturas. O objetivo deste trabalho foi avaliar influência diferentes métodos inoculação BPCP Azospirillum brasilense no desenvolvimento vegetativo e na produção grãos da cultura do milho em zonas relevo. experimento conduzido Cruzeiro Sul (RS), com semeadura mecanizada híbrido Velox TL®, ciclo superprecoce. delineamento...