PRODUCTIVITY OF GROUNDNUT (ARACHIS HYPOGAEA L.) VARIETIES IN CHUI VALLEY OF THE KYRGYZ REPUBLIC
Arable land under legume crops in Kyrgyz Republic growing up greatly due to expansion of kidney beans plantations in period 1991-2016. Only grain legumes listed in official statistic state. That is why the importance of other legume crops are not pointed except bean. Meantime, groundnut, chick-pea and pea sowing lands are gradually growing up. But they do not have commercial status under the state scale. However, these crops have already main economic role in many household farms. Soil and climate conditions of mountain landscape of Kyrgyz Republic are similar with origin place of this crop and able to provide high yield of groundnut. Farmers grow varieties of folk breeding, which have a relatively low grain yield. The varieties from ICRISAT (International Crop Research Institute for Semi-Arid Tropics) were received, and phenology development of introduced varieties was made, comparative research of morphology characteristics was conducted, varieties productivity was identified and recommendation for cultivation of selected varieties was made. I was found out that shortening of plant generative stem decreases the gynophores number placed below of central part of the stem. The higher the stem the more gynophores and the formed peanut beans. Direct positive dependence between stem heights and grain yields was found, which was studied in the correlation-regression analysis (r = 0,800; y = 58 + 0,7x). Between shelter percentages and grain yields close correlation exists r = 0,760. Level of inter correlation between two indicators determines by regression equalization y = 62,8 + 0,24x. The observation shows that maximum productivity of tested varieties has two varieties of foreign breeding – ICGV 95290 and ICGV 95322, which have addition yield +193 and +172 kg/ha in comparative with standard variety Kyrgyzskiy mestny, correspondingly.