Fisiología Vegetal

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The contributions gathered in the third volume of 'Vegetal Entanglements'—a tryptic entirely dedicated to plants in art and culture—focus on the inextricable, actual, and metaphorical links that bind plants, ecosystems, and humans. In this issue, the interconnectedness that characterizes plant lives is explored through a variety of media and approaches designed to foreground vegetal alterity.

Including contributions by Martin Bartelmus | Jean Marie Carey | Bruno Côrte | Cyprian Gaillard | Carsten Holler | Manuela Infante | Noura Al Khasawneh | Shaun Matthews | Stefano Mancuso | Mike Maunder | Junko Mikuriya | Alexander Moore | Egle Oddo |  Raksha Patel | Katrin Petroschkat | Anna Ridler | Dawn Sanders | Vivien Sansour | Basak Senova | Bahia Shehab | Niki Sperou | Cole Swanson | Franziska Weinberger | Lois Weinberger

This issue of Antennae is dedicated to Lois Weinberger (1947-2020).

Monitoramento de áreas em recuperaçāo. Esta publicação reporta indicadores de restauração ecológica para plantio total, sistemas de nucleação da biodiversidade, sistemas agroflorestais, bem como indicadores universais aplicáveis a qualquer situação de restauração.

RESUMO
A cultura da soja está sujeita a adversidades climáticas durante seu ciclo, sendo isto variável de acordo com a data de semeadura da mesma. No estado de Mato Grosso a semeadura antecipada da soja já é realizada por produtores rurais, estes optam por isso, visando, principalmente, o escape das infecções mais intensas da ferrugem asiática, o melhor escalonamento do plantio e da colheita, maximizando o uso do maquinário, também devido aos melhores preços do grão praticados no inicio da colheita de soja, beneficiando assim a implantação da safrinha (2ª safra). A antecipação da semeadura submete as plantas de soja à déficits hídricos no inicio do ciclo, levando a ocorrência de plantas com pequena estatura, entrenós curtos e consequentemente a perda de produtividade. Mas, existem tecnologias disponíveis ao produtor que amenizam o estresse causado pela escassez de água, garantindo o potencial produtivo, cita-se a utilização de cultivares mais tolerantes ao déficit hídrico, o correto manejo do solo e adubação, a adequada inoculação, o tratamento das sementes, dentre outras.
Palavra-chave: estresse hídrico, Glycine Max L., Mato Grosso.

ABSTRACT
The soybean crop is subject to climatic adversities during their cycle, this being variable according to its sowing date. In the Mato Grosso state early soybean planting is already held by some producers, they opt for this, aiming mainly to escape the most intense infections of soybean rust, the best scheduling of planting and harvesting, maximizing the use of machinery also due to better grain prices prevailing in the first soybeans harvest, and also benefits the off-season implementation (2 nd season). The early sowing soybean plants subjected to water deficits at the beginning of their cycle, leading to the occurrence of small stature plants with short internodes and may lead to productivity loss. But there are technologies available to producers to alleviate stress, ensuring the productive potential and may cite the use of tolerant cultivars to water deficit, proper soil management and fertilization, proper inoculation, seed treatment, among others.
Keywords: stress, Glycine max L, Mato Grosso.

Limnobium laevigatum is a floating macrophyte widely distributed in neotropical countries. Due to its potential role in bioremediation it is important to know the best conditions in which it can be propagated. One of the most important factors is the concentration of nutrients in the water. Therefore, the objective of the present work was to determine the nutrient concentration for optimal growth of L. laevigatum under laboratory conditions quantifying the parameters of biomass, occupied area, root size, and leaf production. Experiments were performed in which these morphological parameters were monitored over a period of 21 days along five nutrient concentrations of the water (0X, 12.5X, 25X, 50X and 100X; proportional to nutrient concentration). The highest leaf production, wet weight, number of ramets and leaf area were obtained at the intermediate nutrient concentration treatments (12.5X and 25X), while treatments 0X and 12.5X had higher root growth than the rest. Chlorosis and percentage of dead leaves followed opposite trends, with the first one being higher in the 0X treatment and progressively diminishing as the nutrients increased, with the latter being lower in that first treatment and increasing with the nutrient concentration. Relative growth rate (RGR) was the highest in plants under 12.5X conditions with a value of 0.1239. The role of nutrients in the different physiological responses of the studied plant is discussed and a comparison of the RGR with other floating plant species is presented.