M. Ghosh

A gest o de precis o do azoto no trigo uma pr tica agr cola que visa otimizar a utiliza o de fertilizantes azotados, minimizando o seu impacto ambiental negativo. As tecnologias de agricultura de precis o s o utilizadas para recolher informa es sobre as diferen as espaciais e temporais no campo, a fim de adequar os factores de produ o s condi es espec ficas do local. A gest o de precis o do azoto pode ser utilizada atrav s de mapas de tratamento, determina es durante a esta o e reas homog neas. Antes de tomar decis es de gest o do azoto, necess rio medir e compreender a variabilidade espacial do solo e o estado do azoto no trigo. A utiliza o complementar de diferentes sensores melhorou a avalia o das propriedades do solo a um custo relativamente baixo. Os resultados mostram a utilidade das imagens a reas e da dete o remota e pr xima para prever o estado do N das culturas atrav s de abordagens de gest o reactivas durante a esta o. O medidor SPAD um medidor de clorofila que mede o teor relativo de clorofila das folhas, que pode ser utilizado para determinar o estado de azoto das culturas. A utiliza o de medidores SPAD na gest o de precis o do azoto do trigo foi estudada em v rios trabalhos de investiga o. Um estudo realizado em 2016 mostrou que o medidor SPAD pode ser utilizado para gerir o azoto

Pr zisionsstickstoffmanagement bei Weizen ist eine landwirtschaftliche Praxis, die darauf abzielt, den Einsatz von Stickstoffd ngern zu optimieren und gleichzeitig ihre negativen Auswirkungen auf die Umwelt zu minimieren. Technologien der Pr zisionslandwirtschaft werden eingesetzt, um Informationen ber r umliche und zeitliche Unterschiede innerhalb des Feldes zu sammeln und den Einsatz an die standortspezifischen Feldbedingungen anzupassen. Das pr zise Stickstoffmanagement kann mit Hilfe von Behandlungskarten, saisonalen Bestimmungen und homogenen Fl chen erfolgen. Bevor Entscheidungen zum Stickstoffmanagement getroffen werden k nnen, m ssen sowohl die r umliche Variabilit t des Bodens als auch der Stickstoffstatus des Weizens gemessen und verstanden werden. Der erg nzende Einsatz verschiedener Sensoren hat die Bewertung der Bodeneigenschaften bei relativ geringen Kosten verbessert. Die Ergebnisse zeigen die N tzlichkeit von Luftbildern, Fern- und Naherkundung f r die Vorhersage des N-Status von Kulturpflanzen durch reaktionsf hige Managementans tze w hrend der Saison. Das SPAD-Messger t ist ein Chlorophyllmessger t, das den relativen Chlorophyllgehalt von Bl ttern misst, der zur Bestimmung des Stickstoffstatus von Nutzpflanzen verwendet werden kann. Die Verwendung von SPAD-Messger ten f r das Pr zisionsstickstoffmanagement von Weizen wurde in mehreren Forschungsarbeiten untersucht. Eine 2016 durchgef hrte Studie zeigte, dass das SPAD-Messger t f r das Stickstoffmanagement verwendet werden kann

La gestion pr cise de l'azote dans le bl est une pratique agricole qui vise optimiser l'utilisation des engrais azot s tout en minimisant leur impact n gatif sur l'environnement. Les technologies de l'agriculture de pr cision sont utilis es pour recueillir des informations sur les diff rences spatiales et temporelles au sein du champ afin d'adapter les intrants aux conditions sp cifiques du site. La gestion pr cise de l'azote peut tre mise en oeuvre en utilisant des cartes de traitement, des d terminations en cours de saison et des zones homog nes. Avant de prendre des d cisions en mati re de gestion de l'azote, il est n cessaire de mesurer et de comprendre la variabilit spatiale du sol et l' tat de l'azote dans le bl . L'utilisation compl mentaire de diff rents capteurs a permis d'am liorer l' valuation des propri t s du sol un co t relativement faible. Les r sultats montrent l'utilit des images a roport es, de la t l d tection et de la d tection proximale pour pr dire l' tat de l'azote dans les cultures par des approches r actives de gestion en cours de saison. Le SPAD est un compteur de chlorophylle qui mesure la teneur relative en chlorophylle des feuilles, ce qui peut tre utilis pour d terminer l' tat de l'azote des cultures. L'utilisation des compteurs SPAD dans la gestion de pr cision de l'azote dans le bl a t tudi e dans plusieurs rapports de recherche. Une tude men e en 2016 a montr que le compteur SPAD peut tre utilis pour g rer l'azote.

La gestione di precisione dell'azoto nel grano una pratica agricola che mira a ottimizzare l'uso dei fertilizzanti azotati riducendo al minimo il loro impatto ambientale negativo. Le tecnologie per l'agricoltura di precisione vengono utilizzate per raccogliere informazioni sulle differenze spaziali e temporali all'interno del campo per adeguare gli apporti alle condizioni specifiche del campo. La gestione di precisione dell'azoto pu essere impiegata utilizzando mappe di trattamento, determinazioni in stagione e aree omogenee. Prima di prendere decisioni sulla gestione dell'N, necessario misurare e comprendere la variabilit spaziale del suolo e lo stato dell'N del grano. L'uso complementare di diversi sensori ha migliorato la valutazione delle propriet del suolo a costi relativamente bassi. I risultati dimostrano l'utilit delle immagini aeree, del telerilevamento e del telerilevamento prossimale per prevedere lo stato dell'N delle colture con approcci di gestione reattivi durante la stagione. Lo SPAD meter un misuratore di clorofilla che misura il contenuto relativo di clorofilla delle foglie, che pu essere utilizzato per determinare lo stato di azoto delle colture. L'uso dei misuratori SPAD nella gestione di precisione dell'azoto del grano stato studiato in diversi lavori di ricerca. Uno studio condotto nel 2016 ha dimostrato che il misuratore SPAD pu essere utilizzato per la gestione dell'azoto.

Precision nitrogen management of wheat is a farming practice that aims to optimize the use of nitrogen fertilizers while minimizing their negative environmental impact. Precision agriculture technologies are used to gather information about spatial and temporal differences within the field to match inputs to site-specific field conditions. Precision N management can be employed by using treatment maps, in-season determinations, and homogeneous areas. Before making N management decisions, both the measurement and understanding of soil spatial variability and the wheat N status are needed. Complementary use of different sensors has improved soil properties assessment at relatively low cost. Results show the usefulness of airborne images, remote and proximal sensing for predicting crop N status by responsive in-season management approaches. The SPAD meter is a chlorophyll meter that measures the relative chlorophyll content of leaves, which can be used to determine the nitrogen status of crops. The use of SPAD meters in precision nitrogen management of wheat has been studied in several research papers.

This book highlights the qualitative and quantitative sequential changes in microstructure of P22 steel under various stress and temperature conditions. The P22 alloy is an established material used under elevated temperature and stress for the components of thermal power plants. Temperature and stress levels for laboratory experimentation have been selected based on the true operating condition of a boiler. This book describes both continuous as well as interrupted tests that were performed under given parameters. Subsequently, the microstructures, bulk hardness and NDE parameters (magnetic and non-linear ultrasonic) have been evaluated. For reliable data, the microstructures have been observed at different regions of creep exposed samples by different characterization techniques. This has been further followed by drawing correlation between specific features like precipitate size variation with creep strain / creep time and so on. Given the contents, this book will be a useful reference for researchers and professionals working in the area of materials especially in thermal power plants.

This book highlights the qualitative and quantitative sequential changes in microstructure of P91 steel under various stress and temperature conditions. The P91 alloy is an established material used under elevated temperature and stress in the components of thermal power plants. Temperature and stress levels for laboratory experimentation have been selected based on the true operating condition of a boiler. This book describes both full length as well as interrupted tests that were performed under given parameters. Subsequently, the microstructures, bulk hardness and NDE parameters (magnetic and non-linear ultrasonic) have been evaluated. For reliable data, the microstructures have been observed at different regions of creep exposed samples by different characterization techniques. This has been further followed by drawing co-relation between specific features like precipitate size variation with creep strain / creep time and so on. Given the contents, this book will be a useful reference for researchers and professionals working in the area of materials especially in thermal power plants.

This book highlights the qualitative and quantitative sequential changes in microstructure of P22 steel under various stress and temperature conditions. The P22 alloy is an established material used under elevated temperature and stress for the components of thermal power plants. Temperature and stress levels for laboratory experimentation have been selected based on the true operating condition of a boiler. This book describes both continuous as well as interrupted tests that were performed under given parameters. Subsequently, the microstructures, bulk hardness and NDE parameters (magnetic and non-linear ultrasonic) have been evaluated. For reliable data, the microstructures have been observed at different regions of creep exposed samples by different characterization techniques. This has been further followed by drawing correlation between specific features like precipitate size variation with creep strain / creep time and so on. Given the contents, this book will be a useful reference for researchers and professionals working in the area of materials especially in thermal power plants.

This book highlights the qualitative and quantitative sequential changes in microstructure of P91 steel under various stress and temperature conditions. The P91 alloy is an established material used under elevated temperature and stress in the components of thermal power plants. Temperature and stress levels for laboratory experimentation have been selected based on the true operating condition of a boiler. This book describes both full length as well as interrupted tests that were performed under given parameters. Subsequently, the microstructures, bulk hardness and NDE parameters (magnetic and non-linear ultrasonic) have been evaluated. For reliable data, the microstructures have been observed at different regions of creep exposed samples by different characterization techniques. This has been further followed by drawing co-relation between specific features like precipitate size variation with creep strain / creep time and so on. Given the contents, this book will be a useful reference for researchers and professionals working in the area of materials especially in thermal power plants.