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Desert locusts remain a serious threat to Pakistan

Phys.org/news (OCTOBER 12, 2021)

Titre : Desert locusts remain a serious threat to Pakistan

The recent Desert Locust upsurge had a major impact on Pakistan’s agriculture, with swarms causing immense damage to all types of crops. A team provides an overview of the dynamics of this upsurge, assesses its impact and control measures, and clarifies the role of different stakeholders in the management of this pest, suggesting various improvements for the future.

Phys.org/news (OCTOBER 12, 2021)

Présentation
In 2019 and 2020, desert locusts once again plagued parts of East Africa and huge areas as far as India and Pakistan through the Arabian Peninsula, in an infestation that was described as the worst in decades. A serious agricultural pest, the desert locust Schistocerca gregaria can feed on most types of crops, including grains, vegetables and fruit, causing significant damage to agricultural production and threatening food security in many countries.

Since the 1960s, a preventive control strategy against this pest has been implemented, based on monitoring of outbreak areas and ecological conditions, followed, if necessary, by early intervention and limited use of pesticides, so that any outbreak can be stopped as soon as possible. With 60 years of hindsight, desert locust invasions are now less frequent, smaller in scale and, if they cannot be stopped early, they are adequately managed.

However, financial and political uncertainties in many parts of the desert locust’s range continue to sustain the threat, and not all invasions can be stopped early. This was the case in 2018, when such an upsurge was largely aided by rains in the southern Arabian Peninsula. Locusts could not be detected for several months and therefore went unchecked, mainly due to the insecure conditions, especially in Yemen. The swarms then progressively contaminated a large part of East Africa and spread to Iran, Pakistan and India. Pakistan, in particular, subject to periodic swarm invasions in the past, faced a particularly severe situation in 2019-2020, where the swarms could only be contained after several months of intensive control.

Source  : Pensoft Publishers

Annonce (Phys.org/news)

Annonce (ScienceDaily)

Page publiée le 18 janvier 2023