Other cereals, oil meals, meat, dairy and poultry products and fruits and vegetables too recorded negative growth during the month.
In all, 8 out of 13 main agriculture products that are closely monitored by the Commerce Ministry, were in the negative zone.
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"In the global market, prices of agri-produce are generally weak due to over supply," said Ajay Sahai, DG and CEO of Federation of Indian Export Organisations.
Exports of tea, tobacco and cashew declined by 9.72% to $407 million, 0.36% to $416 million and 18.21% to $382 million respectively, according to the Commerce Ministry data for July.
Other products which have reported negative growth include other cereals (14.3%), oil meals (22.68%), meat, dairy and poultry products (4.28%).
Decline in these exports is a key factor for slow growth in India's overall merchandise exports in July. Growth rate of India's exports dipped by 6.84% in the last month to $21.68 billion.
Agri-products account for over 10% of the country's total exports.
In order to boost agri-exports, the Commerce Ministry is asking exporters to explore new markets and ship value-added products.
Sectors which grew at a healthy pace last month include coffee (3.77%), rice (6.27%), spices (12.18%), and oil seeds (21.79%).