Planting Material

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Planting Material


seeds, fruits, aggregate fruits, and parts of aggregate fruits used for planting. Planting material sometimes includes the parts of plants used for vegetative reproduction, for example, bulbs and potato tubers. In the USSR, state standards have been set for planting quality (germinating power, purity, susceptibility to disease and pests, moisture content, and 1,000-seed weight) and varietal quality (purity and, for some crops, specificity). Only certified seeds meeting these requirements may be planted. State seed inspectorates determine the quality of planting material by means of laboratory analysis, soil control, and test plots.

Planting material is divided by planting quality into three classes. Established for each class are the number of seeds for the main crop, the yield of the main crop, the amount of foreign matter, the number of seeds of other plants (including weeds), germinating power, and moisture content. For winter and spring varieties of soft wheat, the purity norms are 99 percent for class 1, 98.5 percent for class 2, and 97 percent for class 3; the germination rate is 95 percent for class 1, 92 percent for class 2, and 90 percent for class 3. Class-1 and class-2 seeds are planted for crops; class-3 seeds may be planted in exceptional cases and only in the well-tilled areas.

Planting material is also classified according to varietal properties into three categories. For most grains (including pulse crops) category-1 seeds are marked by 99.5 percent purity, cate-gory-2 seeds by 98 percent, and category-3 seeds by 95 percent. Only category-1 seeds may be planted for seed production; cate-gory-2 and category-3 seeds are used in commercial sowing.

Before storing, planting material is cleaned, sorted, and, if necessary, dried. It undergoes various types of preparation before planting. Data on the planting and varietal qualities of planting material are recorded in special registers maintained by each farm.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Now in a fully updated and expanded second edition, "Detection of Plant-Pathogenic Bacteria in Seed and Other Planting Material" is an essential, easy-to-use lab manual describing and illustrating the latest methods for detecting a wide range of bacteria responsible for many of the world's most economically significant bacterial plant diseases in crops.
The weakest link in the fishing industry of Uzbekistan is the production of fish planting material and the inefficient use of natural ponds and artificial ponds.
Manual planting of multibud setts (MBS) is the traditional planting material used in the planting of commercial nurseries and production fields.
He added that the abaca production support program would be undertaken through a 'plant now, pay later' scheme, meaning that the planting material that farmers will receive is not for free.
Looking to the results of various planting material used as seedling materials showed significant differences in growth parameters of turmeric.
Agartala, Oct 8 (ANI): Scientists at the Van Gaveshana Sadan in Agartala, Tripura, are helping bamboo cultivators to meet the shortage of planting material available for bamboo cultivation through tissue culture propagation.
"We are getting the right planting material to introduce to the farmers, doing site selection in the right geographic locations and, over time, the processing facilities," he added.
supply certified and/or non-certified grapevine planting material. In addition, the Department of Horticulture at Oregon State University, Corvallis, offers state-certified and non-certified materials derived from foundation vines established when the department possessed a USDA importation permit, or from out-of-state foundation stock plants maintained at the university.
'We are distributing the certified seeds to the farmers who need planting material in Sebaste, Hamtic, and Libertad (towns),' she said in an interview.
Mesolania added that any plant or planting material needs a clearance or permit, as many countries have various existing rules and regulations pertaining to the entry of these items.