Search results for "spatially variable rate fertilisation"

showing 3 items of 3 documents

Use of Sentinel-2 Satellite for Spatially Variable Rate Fertiliser Management in a Sicilian Vineyard

2022

Satellites can be used for producing maps of within-field crop and soil parameters and, consequentially, spatially variable rate crop input application maps. The plant vegetative vigour index (i.e., Normalised Difference Vegetation Index—NDVI) and the leaf water content index (i.e., Normalised Difference Water Index—NDWI) maps were used to study—through both time and space—the phenological phases of two plots, with Syrah and Nero d’Avola grapevine varieties, in a Sicilian vineyard farm, located in Naro (Agrigento, Sicily, Italy). The aim of this work is to produce spatially variable rate nitrogen fertiliser maps to be applied in the two vineyard plots under stu…

Environmental effects of industries and plantsRenewable Energy Sustainability and the Environmenttemporal variabilityGeography Planning and DevelopmentSettore AGR/09 - Meccanica AgrariaTJ807-830Management Monitoring Policy and LawTD194-195Renewable energy sourcesEnvironmental sciencesremote sensingprecision viticulture; remote sensing; temporal variability; spatial variability; nitrogen spatially variable rate fertilisation; sustainable vineyard managementprecision viticulturespatial variabilityGE1-350sustainable vineyard managementnitrogen spatially variable rate fertilisationSustainability; Volume 14; Issue 3; Pages: 1688
researchProduct

Adjustment time and offset of a system for spatially variable rate fertilisation

2005

The aim of this research is to measure the adjustment time and offset of a cheap system for spatially variable rate fertilisation, designed, developed and set up by the Mechanics Section of I.T.A.F. Department. In order to test the system, a centrifugal fertiliser spreader, working by gravity, was modified connecting an actuator with the two hopper shutter slides. Two different actuator types were tested, in order to measure the accordingly variable adjustment time and offset. The adjustment offset of the centrifugal spreader increases with increasing machine average forward speed and decreases with increasing fertiliser rate, considering the same rate variation. The main components of the …

Settore AGR/09 - Meccanica Agrariaadjustment time adjustment offset spatially variable rate fertilisation
researchProduct

Un sistema per la concimazione spazialmente variabile

2005

Lo scopo del lavoro è quello di misurare il tempo e la distanza di regolazione di un sistema per l’applicazione di fattori produttivi a dosi spazialmente variabili, progettato, sviluppato, messo a punto e già sperimentato positivamente per il diserbo dalla Sezione Meccanica del Dipartimento I.T.A.F. Tale sistema è stato sperimentato per la concimazione spazialmente variabile, installando, su uno spandiconcime ad azione centrifuga a due dischi di distribuzione opportunamente modificato, due diversi tipi di attuatori, collegati al sistema di regolazione delle luci di caduta del concime. E’ risultato che, a parità di variazione di dose, la distanza di regolazione del sistema, con entrambi gli …

spatially variable rate fertilisation adjustment time adjustment offset
researchProduct