Mr Godwin Atser, IITA, Digital Extension and Rural Advisory Services Specialist, made this known in an interview with the News Agency of Nigeria in Ibadan on Monday.
Atser said the App known as IITA Herbicides Calculator, was developed by a team of researchers working for IITA under the IITA-Cassava Weed Management Project, now merged with IITA- African Cassava Agronomy Initiative.
He said it would help resource-poor farmers to maximise the use of their inputs by allowing them to determine correctly the quantity of herbicide needed to add to a knapsack for a given spraying operation.
Atser added that the inauguration of the App by Lawrence Kent of the Bill and Melinda Gates Foundation during the 5th Annual Meeting of the IITA-Cassava Weed Management Project gave free access to farmers and other users to download the app from Google play store and use on their farms.
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He emphasised that in most rural farming communities in Africa, the knapsack sprayer was a piece of common equipment used for herbicides application.
However, the challenge farmers face is mostly wrong application of herbicides as many cannot manually calculate the quantity of herbicide needed to load in the sprayer per given operation.
With the mobile App, farmers by the click of four buttons on their mobile phones are able to know exactly the quantity of herbicides they need to load in their sprayers.
Reviewers on Google play store said the App was a game changer that would revolutionise cassava farming in particular and agriculture in general.
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Reviewers emphasised that the mobile App would help farmers in their weed control activities which would result in increased yields and more profits. "This is an excellent App for precision agriculture, very useful tool for resource-poor farmers," he said.
According to him, although the App was developed in the context of weed control in cassava farming systems, its application covers other arable crops such as rice, maize, soybean and wheat.