Proximal optical sensors for nitrogen management of vegetable crops: A review

FM Padilla, M Gallardo, MT Peña-Fleitas, R De Souza… - Sensors, 2018 - mdpi.com
Optimal nitrogen (N) management is essential for profitable vegetable crop production and
to minimize N losses to the environment that are a consequence of an excessive N supply …

Strategies to make use of plant sensors‐based diagnostic information for nitrogen recommendations

SM Samborski, N Tremblay, E Fallon - Agronomy journal, 2009 - Wiley Online Library
Improvements of nitrogen use efficiency (NUE) may be achieved through the use of sensing
tools for N status determination. Leaf and canopy chlorophyll, as well as leaf polyphenolics …

Biochar and biochar-compost as soil amendments: Effects on peanut yield, soil properties and greenhouse gas emissions in tropical North Queensland, Australia

G Agegnehu, AM Bass, PN Nelson, B Muirhead… - Agriculture, ecosystems …, 2015 - Elsevier
This study investigated the effects of biochar and compost, applied individually or together,
on soil fertility, peanut yield and greenhouse gas (GHG) emissions on a Ferralsol in north …

Evaluating the relationship between leaf chlorophyll concentration and SPAD-502 chlorophyll meter readings

J Uddling, J Gelang-Alfredsson, K Piikki… - Photosynthesis research, 2007 - Springer
Relationships between chlorophyll concentration ([chl]) and SPAD values were determined
for birch, wheat, and potato. For all three species, the relationships were non-linear with an …

Dose-dependent response of Trichoderma harzianum in improving drought tolerance in rice genotypes

V Pandey, MW Ansari, S Tula, S Yadav, RK Sahoo… - Planta, 2016 - Springer
Main conclusion This study demonstrates a dose-dependent response of Trichoderma
harzianum Th-56 in improving drought tolerance in rice by modulating proline, SOD, lipid …

Use of a leaf chlorophyll content index to improve the prediction of above-ground biomass and productivity

C Liu, Y Liu, Y Lu, Y Liao, J Nie, X Yuan, F Chen - PeerJ, 2019 - peerj.com
Improving the accuracy of predicting plant productivity is a key element in planning nutrient
management strategies to ensure a balance between nutrient supply and demand under …

Relationship between specific leaf area, leaf thickness, leaf water content and SPAD-502 readings in six Amazonian tree species

RA Marenco, SA Antezana-Vera, HCS Nascimento - Photosynthetica, 2009 - Springer
The aim of this work was to assess the effect of leaf thickness, leaf succulence (LS), specific
leaf area (SLA), specific leaf mass (W s) and leaf water content (LWC) on chlorophyll (Chl) …

Comparing SPAD and atLEAF values for chlorophyll assessment in crop species

J Zhu, N Tremblay, Y Liang - Canadian journal of soil science, 2012 - cdnsciencepub.com
Zhu, J., Tremblay, N. and Liang, Y. 2012. Comparing SPAD and atLEAF values for
chlorophyll assessment in crop species. Can. J. Soil Sci. 92: 645–648. This research had the …

Airborne hyperspectral images and ground-level optical sensors as assessment tools for maize nitrogen fertilization

M Quemada, JL Gabriel, P Zarco-Tejada - Remote sensing, 2014 - mdpi.com
Estimating crop nitrogen (N) status with sensors can be useful to adjust fertilizer levels to
crop requirements, reducing farmers' costs and N losses to the environment. In this study, we …

Tomato productivity and quality in aquaponics: Comparison of three hydroponic methods

Z Schmautz, F Loeu, F Liebisch, A Graber, A Mathis… - Water, 2016 - mdpi.com
Aquaponics (AP) is a food production system that combines hydroponic (HP) crop
production with recirculating aquaculture. Different types of hydroponic systems have been …