1991, Nr 147
Stały URI dla kolekcji
Przeglądaj
Ostatnie zgłoszenia
Pozycja Open Access Wpływ podłoża na plon pomidora szklarniowego(Akademia Rolnicza w Szczecinie, 1991) Orłowski, Marian; Kwaśniewska-Werbel, Anna; Akademia Rolnicza w Szczecinie. Katedra Warzywnictwa; Akademia Rolnicza we Wrocławiu; Kołota, EugeniuszDuring the vegetation period of 1980 in autumn season, in Combine State Farms in Gumieńce there was carried out an experiment in order to determine the influence of the kind of growing medium and method of its preparation on yield of two greenhouse tomatoes cultivars. The following growing mediums were used: straw, bark (70%) and manure (30%) , bark buried at the depth of 30 cm, bark dug in and control medium containg mixture of bark (70%), sandy loam soil (15%) and manure (15%). Previously, during the spring cycle the growing mediums were used for cucumber production. After harvest this crop the growing mediums were used for tomatoes without any tillage or were mixed by troctor rotary cultivator. On each medium there were simultanously planted two cultivars: Nortona ТmС4F1 and Carmello F1. Results of the study showed that better results gave Carmello Fj ctv. Among the tested growing mediums the dug in bark appeared to be the1 best one. Mixing growing medium after cucumber spring cultivation was advantageous for tomatoes yield and quality of fruit during the autumn sezon.Pozycja Open Access Ocena wartości nawozowej płynnych nawozów azotowych typu UF w doświadczeniach wazonowych(Akademia Rolnicza w Szczecinie, 1991) Nowak, Wanda; Krzywy, Edward; Tlustos, Pavel; Vostal, Josef; Akademia Rolnicza w Szczecinie. Katedra Chemii Rolnej; Akademia Rolnicza w Szczecinie. Katedra Chemii Rolnej; Wyższa Szkoła Rolnicza w Pradze. Katedra Agrochemii; Wyższa Szkoła Rolnicza w Pradze. Katedra Agrochemii; Akademia Rolniczo-Techniczna w Olsztynie; Mazur, TeofilIn the years of 1987-1989 the two experiments in AR in Szczecin and VSZ in Prague have been conducted. In the pot experiment in Szczecin the effect of the ammonium sulphate and liquid nitrogen fertilizers (UF) on the yield of Lolium multiflorum while in Prague urea and liguid fertilizers (UF) on the yield of oats have been determined. Nitrogen fertilizers were applied in doses of 1,0, 1,5, and 2,0 g N per pot. Lolium multiflorum reacted with higher crops when fertilized with ammonium sulphate and oats when fertilized with liguid one. Lolium multiflorum better utilized the nitrogen and contained more N-NO3 when was fertilized with liguid nitrogen compared to that treated with ammonium sulphate. (Oats utilized nitrogen in higher percentage and content more N-NO, when fertilized with urea comparing to liguid nitrogen.Pozycja Open Access Potencjalne zmiejszenie plonu bobiku w Polsce przez posuchy atmosferyczne(Akademia Rolnicza w Szczecinie, 1991) Michalska, Bożena; Akademia Rolnicza w Szczecinie. Katedra Agrometeorologii; Akademia Rolnicza w Krakowie; Ziółek, EdwardThis study was based on agrophenological data and faba bean yields (Dino variety) collected from 23 COBORU experimental stations in the years 1983-1989. Over 20-day droughts were calculated on the basis of 24-hour precipitation measurements taken from precipitation year-Books and Warsaw IMGW records from 93 meteorological stations for the years 1951-1980. The influence of droughts on faba bean yield was determined by means of regression analysis. The greatest statistically significant difference was found in the stage from emergence to technical maturity. Over 20-day droughts decreased the yield below the average of a given population. The distribution of average drought period and the freguency of years with over 20-day droughts as well as faba bean yield decrease caused by those droughts are shown on maps 1-4. On the average a yearly yield decrease resulting from unfavourable over 20-day droughts ranges from 1-7%.Pozycja Open Access Zużycie ścierne lemieszy korpusów płużnych zamocowanych sztywno i sprężynowo do ramy(Akademia Rolnicza w Szczecinie, 1991) Kufel, Kazimierz; Akademia Rolnicza w Szczecinie. Instytut Mechanizacji Rolnictwa; Politechnika Poznańska; Kośmicki, ZdzisławIn the article were shown the results of comparative examinations of emery wear and tear, estimated in the linear criterion, of shares of ploughs' bodies fasten spring and stiff to a frame of a plough. The field examinations consisted of two experiments, in which were used two, differing in the construction models of plougs with spring fasten of bodies to a frame. It was found, under taken terms of the examinations, that spring fasten of bodies to a frame has a smaller wear and tear in comaprison with a wear and tear of shares of bodies fasten stiff to a frame of a plough.Pozycja Open Access Problemy przeciwerozyjnej agrotechniki w zakresie mechanicznej uprawy roli(Akademia Rolnicza w Szczecinie, 1991) Koćmit, Adam; Akademia Rolnicza w Szczecinie. Instytut Mechanizacji Rolnictwa. Zakad Erozji i Rekultywacji Gleby; Akademia Rolnicza w Lublinie; Mazur, ZygmuntIn this paper influence of mechanical soil cultivation on some physical properties of the soil connected with the intensity of erosion in north western part of Poland has been presented. As an effect of mistakes which had been done in soil tillage, crop rotation and fertilization, the worsening of the soil porosity, soil structure, biological activity and some other properties of weakening the soil resistence to washing off in case of the heavy rain fall has been observed. On the basis of evaluation of up-today agriculture practice, final conclussions and recommendations concerning antierosion practices for the hilly regions has been defined.Pozycja Open Access Wpływ pogłębionej orki zgodnej ze spadkiem terenu na erozję wodną i zmiany właściwości fizycznych powierzchniowej warstwy gleby(Akademia Rolnicza w Szczecinie, 1991) Koćmit, Adam; Zamęcki, Andrzej; Akademia Rolnicza w Szczecinie. Instytut Mechanizacji Rolnictwa. Zakład Erozji i Rekultywacji Gleby; Akademia Rolnicza w Szczecinie. Instytut Mechanizacji Rolnictwa. Zakład Erozji i Rekultywacji Gleby; Akademia Rolnicza w Lublinie; Mazur, ZygmuntEroded soil formed with glacial drift on the west slope of terminal moraine hill was ploughing with plow without mouldboard to the depth of 42 cm. Treatment has been done in the down hill direction. The main aim of this treatment was to improve water capacity and increase the antierosion resistance of the soil. After this treatment run down of soil increased, worsening of soil porosity and agregate structure has been observed and also decrease of water capacity has been found. It appeared that deep ploughing did not bring expecting effects and did not weaken the water erosion process.Pozycja Open Access Wpływ uproszczonych zmianowań w uprawie pszenicy ozimej i żyta na kształtowanie zmian jakościowych materii organicznej gleby. CZ. III. Korelacje między składem elementarnych labilnych kwasów huminowych a wybranymi parametrami widm adsorpcji w zakresie widzialnym(Akademia Rolnicza w Szczecinie, 1991) Gołębiowska, Dorota; Milczarek, Irena; Puzyna, Włodzimierz; Szczodrowska, Barbara; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Instytut Uprawy, Nawożenia i Gleboznawstwa w Puławach; Myśków, WładysławAn attempt was made to explain the observed differences in absorptive properties of labile humic acids (IHA) from the standpoint of changes in chemical composition of the compounds. The elemental analysis allowed to determine the H/C and C/N ratios of the preparations tested. LHA from wheat fields show lower H/C and higher C/N than IHA from rye fields. The three growing seasons means of C/N show IHA from monocultures to be poorer in nitrogen than IHA from fields subjec to crop-rotation. The Q, ,, coefficients calculated from absorption spectra were correlated with4' C/N. When looking for confirmation of the nature of changes in the molecular structure, relationship between the relative absorbance change ( X = 600 nm) at pH increase from 6 to 10 and H/C and N/C ratios were tested. Analysis of A A/A(pH 10) = f(H/C) shows substantial differences in correlations obtained for IHA from wheat soil subject to monoculture and those subject to crop rotation. Relations between amounts of nitrogen and molecule size demonstrate different courses of humification processes in the rye and wheat field soils.The higher proportion of nitrogen in the molecule structure of IHA from rye field soil may be one of the reasons why rye is better than adapted to monoculture.Pozycja Open Access Wpływ uproszczonych zmian w uprawie pszenicy ozimej i żyta na kształtowanie zmian jakościowych materii organicznej gleby. Cz. II. Charakterystyka labilnych kwasów huminowych na podstawie pomiarów absorbancji w zakresie UV-VIS(Akademia Rolnicza w Szczecinie, 1991) Gołębiowska, Dorota; Milczarek, Irena; Puzyna, Włodzimierz; Szczodrowska, Barbara; Szczodrowska, Barbara promotor; Szczodrowska, Barbara; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Akademia Rolnicza w Szczecinie. Zakład FizykiAbsorptive properties of labile humic acid (IHA) extracted with neutral Na4P207 solution from rye and winter wheat field soils were compared. UV-VIS absorbance was measured on the IHA preparations obtained under the following conditions: a) pH = 10 b) pH = 10 and visible light irradiation of the solutions; c) pH = 10 and oxidation of the solutions with 0,17 mol dm-J g2^2' d) pH = 6. The following parameters of spectra were determined: A( 1 )/lc-concentration absorbance coefficient expressing the relation between absorbance at A = 333 nm and c = 0,005% carbon solution concentration and 1 = 1 cm thick layer; Q.,, - the ratio of absorbances at Д = 400 nm and X = 600 nm AA/A(pH 10) - relative absorbance change brought about by pH changes (pH = 10 and pH = 6) at X = 600 nm. The results obtained allow to conclude that IHA obtained from rye and wheat field soils differ in structure. They show different seasonal rhythms of transformations as confirmed by the calculated differences between concentration absorbance coefficients for monoculture-crop rotation pairs. The calculated values and relationships of AA/A(pH 10) = confirm our earlier4' suggestions of a loose structure of humic acidsbof monoculturs; the observed increase in long - wave absorbance at elevated pH is brought about not only by the hyperchromatic effect, but also by an increased dissociation of phenol groups.Pozycja Open Access Wpływ uproszczonych zmianowań w uprawie pszenicy ozimej i żyta na kształtowanie zmian jakościowych materii organicznej gleby. Cz. I. Zawartość i skład frakcyjny labilnych substancji humusowych(Akademia Rolnicza w Szczecinie, 1991) Giegużyńska, Elżbieta; Gołębiowska, Dorota; Sienkiewicz, Mariola; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Akademia Rolnicza w Szczecinie. Zakład Fizyki; Instytut Uprawy, Nawożenia i Gleboznawstwa w Puławach; Myśków, WładysławStudies were made on labile humic substances (1HS) extracted from soil cultivated since 1970 in the following crop rotation system: WHEAT grain monoculture (M): rye, spring barley, corn, winter wheat; crop rotation (P) : fodder plants, spring barley, potatoes, winter wheat; RYE - pure monoculture (M): rye, rye, rye, rye; crop rotation (P): potatoes, oats, horse beans, rye. The studies were made during three growth seasons of 1986-1989. The following assays were made in average soil samples: contents of ctot (*)I LBS (%of C. .), and IHA (%of C. .). Contents of labile fulvic acids (1FA) were calculated from the diffefafice: 1HS-1HA. The study was aimed at comparing effects of various grains and their cultivation systems on the content and fractional composition of 1HS. The Fisher-Snedecor's F test was used to test for statistical significance of differences. Wheat cultivated in grain monoculture was found to induce no negative changes both in content and fractional composition of IBS. Rye monoculture was shown to result in an increase in labile |HS and a decrease in the 1HA:1FA ratio of the soils.Pozycja Open Access Porównanie 60 modeli sadów pod względem ich potencjalnej produktywności(Akademia Rolnicza w Szczecinie, 1991) Ostrowski, Waldemar; Chełpiński, Piotr; Mazurczak, Grzegorz; Akademia Rolnicza w Szczecinie. Katedra Sadownictwa; Akademia Rolnicza w Szczecinie. Katedra Sadownictwa; Akademia Rolnicza w Szczecinie. Katedra SadownictwaThe research concerned the investigation of 60 orchard models in respect of the following biological parameters: sunny surface of the crown, crown volume, shaded part of crown volume, "fruiting mantel" volume, crown onto the ground surface projection and surface to crown volume ratio as well as "fruiting mantel" volume to crown volume ratio. It assumed that these parameters are valuable when they are refered to 1 ha but not one tree. The following factors should be considered the most valuable for potential productivity of the investigated orchard models, namely: surface to crown volume and "fruiting mantel" volume to crown volume. Both of them prove, that in high density plantings including small trees, the whole crown volume is "fruiting mantel".Pozycja Open Access Modyfikacja metody klimatogramów Waltera i Lietha dla okresów dekadowych(Akademia Rolnicza w Szczecinie, 1991) Ostrowski, Waldemar; Prawdzic, Krzysztof; Akademia Rolnicza w Szczecinie. Katedra Sadownictwa; Akademia Rolnicza w Szczecinie. Katedra SadownictwaThe leading autor (Ostrowski 1965) has modified the Walter’s and Lieth's (1960) climatogram method to decade periods. This method has been compared to Sielianinov's hygrothermic indicators and P-0,1 S T values. The graphic modification made by Ostrowski gives very accurate data of temperature, precipitation and insolation in decade sequence during the vegetation period against the bacxground of long - term period data (ryc. IB, 2B and 3B). The described modification seems to be particularly useful in fruit - growing experiments.Pozycja Open Access Wpływ terminu siewu i terminu sadzenia rozsady na plon nasion kalafiora(Akademia Rolnicza w Szczecinie, 1991) Orłowski, Marian; Dobromilska, Renata; Rekowska, Ewa; Akademia Rolnicza w Szczecinie. Katedra Warzywnictwa; Akademia Rolnicza w Szczecinie. Katedra Warzywnictwa; Akademia Rolnicza w Szczecinie. Katedra WarzywnictwaIn 1980-1982 at Agricultural University in Szczecin there was carried out a field experiment which the aim was to determine the influence of seed sowing and seedlings planting date on yield of cauliflower seed Pionier ctv. Seed were sown in the greenhouse into boxes in three terms: 15 IX, 15 X and 15 XI. In 1981 they were additionally drilled in 15 XII. Seedlings were planted to the open field in the first, second and third decade of April in spacing 67 x 50 cm. Results of the study showed that the yield of seed was more dependent on time of sowing than date of planting. The highest yield was obtained from the September term of sowing if the seedlings were planted in the first decade of April (419 kg'ha-1). Compared in the experiment methods of cauliflower production did not influence the quality of seed. The best economical effects of production were gained from the earliest sowing and planting date of cauliflower.Pozycja Open Access Wpływ gęstości siewu nasion kapusty głowiastej białej na rozsadniku na jej plon(Akademia Rolnicza w Szczecinie, 1991) Orłowski, MarianIn 1977-1979 there was conducted an experiment which the aim was to study the influence of seed sowing density in the seed-bed on the quality of transplants and yield of white head cabbage Amager cultivar, with taking into consideration the economical effects of production. Injthe experiment there was used the same quantity of seed for sowing per 1 nr of the seed-bed (6g) and different row distances at 10, 15, 20 and 25 cm, or the same quantity of seed (0,6 g per 1 m of the row) at the mentioned row distances. The results of the study showed that higher row distances increased the needed area of seed-bed and the unit costs of transplants production. The tested methods of seedlings production did not influence the quality of transplants. Taking into consideration the technological and economical aspects of cabbage cultivation, sowing 6 g seed per 1 m of the row with the distances 10-15 cm between rows may be considered as the best method of transplants production in the seed-bed.Pozycja Open Access Wpływ odmiany pomidora szklarniowego, uprawianego w nie ogrzewanym tunelu foliowym na jego plon(Akademia Rolnicza w Szczecinie, 1991) Orłowski, Marian; Dobromilska, Renata; Akademia Rolnicza w Szczecinie. Katedra Warzywnictwa; Akademia Rolnicza w Szczecinie. Katedra WarzywnictwaIn 1986 the Department of Vegetable Crops of the Agricultural University in Szczecin carried out an experiment in Horticultural Experimental Station in Dołuje which the aim was to investigate 15 foreign greenhouse cultivars (Holland, Denmark and Sweden) and native hybryd cultivar - Celena Tm C2 in unheated plastic tunnel. There were estimated the early, total and marketable yields of fruit. Beside the biological observations there were collected some economical data for estimation the costs of production and profitability of cultivation the tested cultivars. Results of the study showed that cultivar influenced significantly the early and marketable yield of fruit as well as profitability of cultivation. The best tomato cultivars for the production in plastic tunnel were Ida 214, E 14205 and Creon, and the earliest onces were Creon and E 14205. Tomatoes production in unheated plastic tunel in 1986 showed only small profitability.