Combined use of low-cost remote sensing techniques and δ13C to assess bread wheat grain yield under different water and nitrogen conditions
Araus Ortega, José Luis
Serret Molins, M. Dolors
MetadataShow full item record
Vegetation indices and canopy temperature are the most usual remote sensing approaches to assess cereal performance. Understanding the relationships of these parameters and yield may help design more e cient strategies to monitor crop performance. We present an evaluation of vegetation indices (derived from RGB images and multispectral data) and water status traits (through the canopy temperature, stomatal conductance and carbon isotopic composition) measured during the reproductive stage for genotype phenotyping in a study of four wheat genotypes growing under di erent water and nitrogen regimes in north Algeria. Di erences among the cultivars were reported through the vegetation indices, but not with the water status traits. Both approximations correlated significantly with grain yield (GY), reporting stronger correlations under support irrigation and N-fertilization than the rainfed or the no N-fertilization conditions. For N-fertilized trials (irrigated or rainfed) water status parameters were the main factors predicting relative GY performance, while in the absence of N-fertilization, the green canopy area (assessed through GGA) was the main factor negatively correlated with GY. Regression models for GY estimation were generated using data from three consecutive growing seasons. The results highlighted the usefulness of vegetation indices derived from RGB images predicting GY.
Is part ofAgronomy, 2019, vol. 9, núm. 6, 285
European research projects
Showing items related by title, author, creator and subject.
Evaluating maize genotype performance under low nitrogen conditions using RGB UAV phenotyping techniques Buchaillot, Ma. Luisa; Gracia-Romero, Adrian; Vergara-Diaz, Omar; Zaman-Allah, Mainassara A.; Tarekegne, Amsal; Cairns, Jill E.; Prasanna, Boddupalli M.; Araus Ortega, José Luis; Kefauver, Shawn C. (MDPI, 2019-04-16)Maize is the most cultivated cereal in Africa in terms of land area and production, but low soil nitrogen availability often constrains yields. Developing new maize varieties with high and reliable yields using traditional ...
A novel aspect of essential oils: coating seeds with thyme essential oil induces drought resistance in wheat Ben-Jabeur, Maissa; Vicente, Rubén; López Cristoffanini, Camilo Alonso; Alesami, Noura; Djébali, Naceur; Gracia-Romero, Adrian; Serret Molins, M. Dolors; López Carbonell, Marta; Araus Ortega, José Luis; Hamada, Walid (MDPI, 2019-09-25)Coating seeds with biostimulants is among the promising approaches in crop production to increase crop tolerance to drought stress. In this study, we evaluated the potential of coating durum wheat seeds of the cultivar ...
Leaf versus whole-canopy remote sensing methodologies for crop monitoring under conservation agriculture: a case of study with maize in Zimbabwe Gracia-Romero, Adrian; Kefauver, Shawn C.; Vergara-Diaz, Omar; Hamadziripi, Esnath; Zaman‑Allah, Mainassara A.; Thierfelder, Christian; Prassana, Boddupalli M.; Cairns, Jill E.; Araus Ortega, José Luis (Nature Research, 2020-09-29)Enhancing nitrogen fertilization efficiency for improving yield is a major challenge for smallholder farming systems. Rapid and cost-effective methodologies with the capability to assess the effects of fertilization are ...