Unsold stocks of feed wheat and feed barley from this year's harvest are similar to this time last year.
Stocks of milling wheat yet to be sold are down 7900 tonnes on last year, and malting barley is up 2100 tonnes.
The survey revealed about 6300 tonnes of feed wheat are estimated to have been sold as milling wheat.
Some autumn and winter-sown crops have been affected by flooding and may have to be re-sown.
Milling wheat, which has either gone into the ground or is intended to be sown, is up 38 per cent on last season, while feed wheat is identical to last season and most of it has been sown.
Sowing intentions for malting barley are up 2 per cent, feed barley are down 8 per cent, milling oats are down 9 per cent and feed oats are down 16 per cent, although less than half of these crops had actually been sown by the beginning of July.
Yield estimates at this stage are down for feed wheat by 1 per cent, feed barley by 4 per cent, milling wheat by 3 per cent, malting barley by 13 per cent and milling oats by 8 per cent, while feed oat yields are up 9 per cent.
Unsold grain is estimated at 51,300 tonnes for feed wheat, 52,900 tonnes for feed barley, 9500 tonnes for milling wheat and 4300 tonnes for malting barley.
Planting predictions for next year's harvest are, overall six cereal crops, down 1 per cent - from 95,100ha to 94,000ha.
The estimated total tonnage for milling wheat of 59,900 tonnes, compared with last year's harvest, was down 37 per cent.
About 84 per cent of this has been sold, although a large amount of the sold grain is still stored on farms.
The 9500 tonnes of unsold grain is lower than the same time last year when there were 17,300 tonnes.
The estimated 341,000 tonnes of feed wheat is up 4 per cent, with about 85 per cent of this sold and much of it still stored on farms.
The 51,300 tonnes of unsold grain is similar to last July.
The total estimate of 304,500 tonnes for feed barley is up 14 per cent, 39,300 tonnes for malting barley is down 31 per cent, 16,300 tonnes for milling oats is up 14 per cent and 8600 tonnes for feed oats is down 19 per cent.
The actual area sown in autumn and winter wheat or barley by July was up 1 per cent, but when combined with spring sowing intentions, sown areas are predicted to be down 1 per cent, AIMI said.
Over the two-year period to the following harvest, the harvest area for feed wheat is predicted to increase by 6 per cent, feed barley by 9 per cent and milling oats by 12 per cent - however, milling wheat is expected to decrease by 10 per cent, malting barley by 19 per cent and feed oats 37 per cent.
AIMI said the market was strong with good demand and prices increasing, but so were expenses for fuel, fertiliser and wages.
The feeling among growers is uncertainty about what crops to sow and how much.
Some growers are opting for lower input crops such as peas to ease cashflows and others are waiting for contracts to come out for cereals and other crops before deciding.
Autumn conditions were good for establishing crops in South Canterbury and Southland, but there's now too much water in Canterbury, and some flooded crops may need re-drilling.
Later sown crops are struggling with the wet and cold.
