Wpływ warunków przyrodniczych i czynników agrotechnicznych na plon i skład chemiczny nasion oraz niektóre cechy morfologiczne nowych form soi

Jan Pyzik

Abstract

Research on the agrotechnics of soybeans was carried out in some regions differing by climate and soils in the south-east of Poland. The experiments were carried out in cycles of 2-3 years. The influence of the seeding date and seed spacing, nitrogen fertilization, soil inoculation by Rbizobium japonicum bacteria, and the use of herbicides on the progress of vegetation were studied; yields of seeds, the contents of protein and fat, some morphological features of new forms of soya beans grown in Poland were investigated. Varieties Warszawska /as a standard/, Ajma, and strains M-29, M-38, M-34 belonging to the group of average earliness, and strain IHAR 78/B belonging to the group of earliness three-zero were studied, too. The author stated that the optimum seeding date of soybeans coincides with the turn of April and May. If sowing takes place before April 20th, the number of germinating plants and the yield of seeds decrease, while the vegetation period is prolonged. The seeding date did not influence the content of protein and fat. Applied seed spacing resulting from the distance between rows: 15,25,35, and 45 cm, and 5 cm for seeds in the row, showed that the most profitable spacing was 25 cm between rows /as for yields of seeds, protein, and fat/. When plant density was smaller, the protein content, the number of pods and seeds, and the mass of 1000 seeds increased, while the fat content and the yields of plant protein and fat decreased. Besides, the position of the lower pods on the stem was lowered. Nitrogen fertilization applied as follows: 15, 30, 45, 60, 90, and 120 kg N per ha, caused a systematic increase of the yields of seeds, protein content, height of plants, number of pods and seeds per plant; however, the fat content decreased and the vegatation period was prolonged by 1 day per 10 kg N. Fertilization did not influence the height of placing of lower pods. Application of nitrogen fertilization up to 60 kg N per ha WE.3 the most profitable for the yields od seeds and their technological value. Soil inoculation by Rhizobium japonicum caused not only an increase of the yield of seeds which was increasing with the activity of the bacteria, but an increase of the number of pods, seeds, and plant length as well. It did not influence the position of lower pods. The application of herbicides: Afalon, Basagran, Gesagard 50, Igran 50, Maloran 50 WP, Topogard, Treflan EC 2, had a good influence on the yield of seeds; besides, the herbicides increased the length of plants, the number of seeds per plant, the mass of 1000 seeds but they did not influence the protein and fat content or the number of pods per plant. A comparison between growing of soybeans on a soil belonging the very good wheat complex and one belonging to a good rye complex indicates that higher yields of seeds /by about 38 V were obtained e the wheat complex of soils. However, higher effectiveness of nitrogen fertilization was obtained on the rye complex soil. The Sandomierz Basin and the Carpathian foreland are the most fax cable regions for growing the examined new forms of soybeans in south-east of Poland, while the Chelm Upland is not very suited to this end.
Other language title versionsInfluence of natural conditions and cultivation factors on the yield and chemical composition of seeds and some morphological features of some new forms of soybeans
Book typeMonograph
Other categories ROZPRAWA_HABILITACYJNA
Author Jan Pyzik (UAK)
Jan Pyzik,,
- University of Agriculture in Krakow
PublisherUniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie, MNiSW [80]
Publishing place (Publisher address)Kraków
Issue year1982
Book series /Journal (in case of Journal special issue)Zeszyty Naukowe Uniwersytetu Rolniczego im. Hugona Kołłątaja w Krakowie. Rozprawy, ISSN 1899-3486, (0 pkt)
No87
Pages80
Publication size in sheets4.84
Languagepl polski
Score (nominal)20
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