Results 21 to 30 of about 23,734,757 (241)

Assessing the Potential for Ion Selective Electrodes and Dual Wavelength UV Spectroscopy as a Rapid on-Farm Measurement of Soil Nitrate Concentration

Agriculture, 2013
Current fertiliser recommendations for nitrogen are limited in their accuracy and may be improved by the use of simple on-farm soil rapid tests. This paper investigates the potential for using nitrate (NO3−) ion selective electrodes (ISEs) and dual ...
Davey L. Jones, Anthony Miller, A. Prysor Williams, Rory Shaw   +3 more
doaj   +1 more source

Método Mehlich 3 como substituinte ao HCl para extração de Cobre e Zinco em solos com alto teor de matéria orgânica do sul do Brasil Mehlich 3 method as substituent to the HCl method for extraction of Copper and Zinc in soils from Southern Brazil with high levels of organic matter

Ciência Rural, 2012
No presente trabalho, foram comparados dois métodos de extração de cobre (Cu) e zinco (Zn) em solos com teor de matéria orgânica (MO) maior que 50g kg-1.
Evandro Luiz Schoninger, Luciano Colpo Gatiboni, Daniel Linhares   +2 more
doaj   +1 more source

Quantifying the Contribution of Sediment Load to Soil Detachment Rate by Sediment-Laden Rill Flow

, 2017
Sediment load changes with downslope distance during rill erosion process, and thus quantifying the potential contribution of sediment load on soil detachment rate is essential to accurately model the rill erosion process.
Wang, ZL (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China., Wang, Dongdong, Wu, Bing, Shen, Nan, Liu, Jun'e, Wang, Zhanli, Zhang, Qingwei, Zhang, Qilin, Wang, ZL (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China., Wang, ZL (reprint author), Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China.   +9 more
core   +1 more source

Recomendação de adubação e calagem para coqueiro (Cocos nucifera L.) no Estado de São Paulo - 1ª. aproximação Fertilizer and lime recommendation for coconut (Cocos nucifera L.) in the state of São Paulo, Brazil - 1st version

Revista Brasileira de Fruticultura, 2005
O objetivo deste trabalho foi apresentar a 1ª. aproximação da recomendação de adubação e calagem para coqueiro no Estado de São Paulo, visando à produção de água. O cultivo de coqueiro nesta região é recente, carecendo de recomendações técnicas.
Luiz Antonio Junqueira Teixeira, Ondino Cleante Bataglia, Salatiér Buzetti, Enes Furlani Junior   +3 more
doaj   +1 more source

Data-Driven Soil Analysis and Evaluation for Smart Farming Using Machine Learning Approaches

Agriculture, 2023
Food shortage issues affect more and more of the population globally as a consequence of the climate crisis, wars, and the COVID-19 pandemic. Increasing crop output has become one of the urgent priorities for many countries.
Yixin Huang, Rishi Srivastava, Chloe Ngo, Jerry Gao, Jane Wu, Sen Chiao   +5 more
doaj   +1 more source

Mise en oeuvre de carottages de sol et de minirhizotrons pour l'étude à long terme de la réponse des fines racines d'épicéa (Picea abies (L.) Karst.) à l'augmentation de la concentration en CO2 dans l'atmosphère et la nutrition minérale [PDF]

Biotechnologie, Agronomie, Société et Environnement, 2004
Use of soil cores and minirhizotrons for the long-term study of the response of Norway spruce fine roots (Picea abies (L.) Karst.) to the increase in CO2 concentration in the atmosphere and nutrition.
Geneviève Pissart, Dominique Perrin, Éric Laitat, Claire Lebègue   +3 more
doaj  

Impact of Growth Sites on the Phenolic Contents and Antioxidant Activities of Three Algerian Mentha Species (M. pulegium L., M. rotundifolia (L.) Huds., and M. spicata L.)

Frontiers in Pharmacology, 2022
Research studies about the effect of environmental agents on the accumulation of phenolic compounds in medicinal plants are required to establish a set of optimal growth conditions.
Fatiha Brahmi, Nassima Lounis, Siham Mebarakou, Naima Guendouze, Drifa Yalaoui-Guellal, Khodir Madani, Khodir Madani, Lila Boulekbache-Makhlouf, Pierre Duez   +8 more
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

Metastatic niche shaped by host factors influences disseminated cancer cell fate

FEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward, Álvaro Ruiz‐Tabas, Patricia Altea‐Manzano   +2 more
wiley   +1 more source

Responses to Increased Salinity and Severe Drought in the Eastern Iberian Endemic Species Thalictrum maritimum (Ranunculaceae), Threatened by Climate Change

Plants, 2020
Thalictrum maritimum is an endangered, endemic species in East Spain, growing in areas of relatively low salinity in littoral salt marshes. A regression of its populations and the number of individuals has been registered in the last decade.
Sara González-Orenga, Calin Trif, Mͣ Pilar Donat-Torres, Josep V. Llinares, Francisco Collado, P. Pablo Ferrer-Gallego, Emilio Laguna, Monica Boscaiu, Oscar Vicente   +8 more
doaj   +1 more source