Multispectral and thermal images taken by cameras on unmanned aerial
vehicles (UAVs) are helping researchers to monitor the resistance of maize to
A new study from researchers at the International Maize and Wheat Improvement Center (CIMMYT) can reduce challenges associated with plant disease assessment in the field. By deploying cameras mounted on unmanned aerial vehicles (UAVs) that capture image information from non-visible sections of the electromagnetic spectrum, the interdisciplinary team demonstrated the effectiveness of remote sensing technologies in maize disease phenotyping.
“Plant disease resistance assessment in the field is
becoming difficult because the breeders’ trials are becoming larger, the trials
have to be conducted in multiple locations, and because sometimes there is a
lack of highly trained personnel who can evaluate the diseases,” said Francelino
Rodrigues, CIMMYT Precision Agriculture Specialist and co-lead author of the
study. “In addition, the disease notes taken in the field by a human eye can
vary from person to person depending on the persons’ experience.”
Partners of the Stress Tolerant Maize for Africa (STMA) project held their annual meeting May 7–9, 2019, in Lusaka, Zambia, to review the achievements of the past year and to discuss the priorities going forward. Launched in 2016, the STMA project aims to develop multiple stress-tolerant maize varieties for diverse agro-ecologies in sub-Saharan Africa, increase genetic gains for key traits preferred by the smallholders, and make these improved seeds available at scale in the target countries in partnership with local public and private seed sector partners.
track down the families in Morelos, Mexico, who donated maize landraces to
CIMMYT in 1966-67. Would they still be cultivating them?
Maize is more than a crop in Mexico. While it provides food,
feed and raw materials, it is also a bloodline running through the generations,
connecting Mexico’s people with their past.
The fascinating diversity of maize in Mexico is rooted in
its cultural and biological legacy as the center of origin of maize. Landraces,
which are maize varieties that have been cultivated and subjected to selection
by farmers for generations, retaining a
distinct identity and lacking formal crop improvement, provide the
basis of this diversity.
As with any cultural legacy, the cultivation of maize
landraces can be lost with the passage of time as farmers adapt to changing
markets and generational shifts take place.
Doctoral candidate Denisse McLean-Rodríguez, from the Sant’Anna School of Advanced Studies in Italy, and researchers from the International Maize and Wheat Improvement Center (CIMMYT) have undertaken a new study that traces the conservation and abandonment of maize landraces over the last 50 years in Morelos, Mexico’s second smallest state.
The study is based on a collection of 93 maize landrace
samples, collected by Ángel Kato as a research assistant back in 1966-67 and
stored in CIMMYT’s Maize Germplasm Bank. Researchers traced the 66 families in
Morelos who donated the samples and explored the reasons why they abandoned or
conserved their landraces.
The control of crop pests has long been linked with chemical products like pesticides and insecticides. However, chemicals are often too expensive for smallholder farmers and require careful, appropriate use to ensure effectiveness. What if we could take advantage of natural ecological processes to suppress unwanted organisms, lessening our reliance on external inputs? This is the topic addressed in “Hide and seek: management and landscape factors affecting maize stemborers, Busseola fusca, infestation levels in Ethiopia,” the recent Ph.D. thesis by Yodit Kebede, completed at Wageningen University, Netherlands with support from the CGIAR Research Program on Maize (MAIZE) and the International Maize and Wheat Improvement Center (CIMMYT). The implications of the research hold significance for prominent pest control challenges like fall armyworm in Africa and beyond.