Field Counts & Sampling Intensity

Field Counts

The number of counts taken and the method of taking counts vary from crop to crop. For all crops, five counts are taken for an area up to 5 acres, and one additional count is taken for every additional 5 acres, as given below.

Number of Counts to be Taken

Area of the field crops (ac) No. of counts to be taken
0–55
6–106
11–157
16–208
21–259

In any inspection, if the first set of counts shows that the seed crop does not conform to the prescribed standards for any factor, a second set of counts should be taken for that factor. However, when the first set of counts shows that a factor is more than twice the maximum permitted, it is not necessary to take a second set of counts. Two sets of counts are called double counts. Some crops produce tillers while others do not; some are planted narrowly while others are planted widely. Therefore, the number of plants or heads comprising a single count differs from crop to crop, as given below:

Plants / Heads Per Count (Crop-wise)

Crop No. of plants / heads per count
Bhendi, Brinjal, Bulbcrops, Capsicum, Castor, Chilli, Cole crops, Cotton, Cucurbits, Maize, Groundnut, Redgram, Tomato, Sunflower 100 plants
Beans, Blackgram, Cowpea, Greengram, Peas, Rape, Mustard, Sesame, Safflower, Sunhemp 500 plants
Berseem, Jute, Mesta, Soyabean 1000 plants
Bajra, Barley, Millets, Oats, Paddy, Sorghum, Wheat 1000 heads

Sampling Intensity

Bags / Containers Sampling Requirement
Up to 5 bags or containers Sample every bag (minimum 5 primary samples)
6 to 30 bags or containers 1 sample for every 3 bags (min 5 samples)
31 to 400 bags or containers 1 sample every 5 bags (min 10 samples)
More than 400 bags or containers 1 sample every 7 bags (min 80 samples)

Note: Primary samples are combined to prepare a representative submitted sample to STL.

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