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It has been estimated the influence of green fertilizers in summer catch crops and straw fertilization on quality of early potatoes. In cultivation after green fertilizer was stated the tendency to decreasing of dry matter content and increasing of starch content in comparison with farmyard manure. Somewhat higher dry matter, starch as well as protein content of early potatoes was stated in cultivation...
The effects of pesticides (Aminopielik D, Siarkol K., Sportak 45 EC, Tilt 250 EC) and their mixtures with urea, micronutrient fertilizers (Insol-3) or retardant (Retacel) in solution on content and yield of crude protein in winter wheat grain as well as on nutritive value of the protein (amino acid composition) were investigated. It was stated the significant effect of protection and integrated measures...
A pot trial was carried out to investigate the effect of fertilization with nitrogen and magnesiu on the yield and morphological character of yellow lupine variety Teo and blue lupine variet Saturn and Polonez. It was found that nitrogen and magnesium fertilization decreased yield of yellow lupine see< Nitrogen fertilization increased yield of blue lupine seeds whereas magnesium fertilizati decreased...
The survey deals with some problems of industralized agriculture development and its conditions. This development was promoted both by economic and biological progress, whereas advances in plant breeding enabled to completely mechanize technology of various crops cultivations claimed to be difficult enough (e.g. maize and sugar beet). It resulted in enormous energetic inputs for agricultural production...
One of the causes of the low yields of sugar beet in Poland seems to be high losses of roots amounting to 30% of the raw material occurring during root heading and harvest. Faulty heading stems from the unequal plant distribution all over the unit area as well as variation within their protrusion over the soil surface what bears relation to the root weight were investigated. To evaluate the uniformity...
In 1993-1995 field experiments were conducted in two locations (Prusy and Wierzbica) with effect of two methods of sowing (barley in pure stand and in mixture with red clover) and with five harvest dates (optimal and 4 successive harvests with weekly delays). Grain yield was effected by the interaction of all factors at each location. On charnozen soil (Prusy) grain yield was on the average 1,4 t...
The aim of the studies was determination of the earliness of six grass species represented by 21 cultivars and checking if the development of generative shoots is dependent on nitrogen fertilization. The studies were carried out in 1994-1995 at natural moderately wet meadow site on mineral soil. Two rates of nitrogen N1 and N2 (80 and 160 kg/ha) have been applied. Cultivars of investigated species...
The aim of the paper is to evaluate the effects of five agrotechnical factors on: a) mean root weight of sugar beet plants per plot and within-plot standard deviation of root weight, b) coefficient of determination for root weight of sugar beet plants by three independent variables x₁, x₂ and х₃ and standardised partial regression coefficients for those independent variables. The factors investigated...
In the paper the results on increasing the genetical variability of winter rye cultivar Chodan and of the select WOB-25 using sodium azide treatment were described. Mutants obtained were classified into different classes of mutants. Sodium azide induced several types of mutants. Most frequently appeared dwarfs and low growing mutants. Sodium azide appeared succesful mutagen for winter rye.
The influence of long-term mineral, organic and organic plus mineral fertilization in total, on the properties of humic acids from the black earth, was studied. Mineral fertilization caused the decreased absorption, specific of the phenol and alcohol OH groups, C=C and C=O bounds in aromatic compounds and NH of 1st order amins. Fertilization with the manure affected the increase absorption in the...
During 3 years (1991-1993) on 3 soils the pot experiments with red clover and Italian ryegrass were conducted. Increased doses of magnesium (0; 0.2; 0.4 and 0.6 g Mg per pot with 6.5kg of the soil) were applied. The soils were differentiated in the content of humus (0.90—4.90%), particles <0.02 mm (13-27%), and exchangeable magnesium (2.6-9.5 mg) and calcium (17-212 mg per 100 g of the soil). On...
On acid (NP) soil or on this soil limed (CaNP) very poor in available potassium increased doses of potassium fertilizer (0; 0.3; 0.6 and 0.9 g K per pot of 6.5 kg of soil) were applied. During 4 years (1991-1994) the maize and during 2 years (1992-1993) triticale was grown. On limed soil marked increase of the yields of maize after K application was noted. On acid soil higher doses of K-fertilizer...
In the paper three soil tillage systems, which are used in contemporary agriculture, on the literature base were presented. Ploughing - the oldest and the most popular system and its modifications depending on depth of plough and intensity of influence on soil. Ploughless system of cultivation - less universal but especially is recommended for ecological farms. The third system, which is called direct...
Lolium perenne cv. Argona sown in pure sowing and in mixture with Trifolium repens cv. Anda in 50% share of each component was studied in the condition of three level of nitrogen (N): 0,60 and 120 kg per ha. It was shown that effects of increasing nitrogen rates the percentage of Trifolium repens whereas the share of Lolium perenne was increased. Mixture Lolium perenne/Trifolium repens gave higher...
In 1993-1995 period the experiments to aim at comparison of yielding and feeding value of Vicia faba ssp. minor and Lathy rus sativus as a kind less widespread in cultivation were carried out. The Polish kind of Vicia faba ssp. minor ripend after 120-121 days, Lathyrus sativus after 131 days of vegetation. From Vicia faba ssp. minor the highest yield of seeds charactized cultivar Inovec and Lathyrus...
This paper presents grain yields of winter wheat in relation two forecrops (winter rape and pea) and the influence of increased doses of nitrogen fertilization (N1 — 30, N2 - 60, N3 - 90, N4 -120 kg N/ha). In 1994-1995 an investigation was conducted in a field experiment, design on black earth with the granulomere composition of light loam on the Experimental Farm at Chylice. The yield of winter wheat...
The experiment was carried out to evaluate the possibility of the production of forage on the grassland fertilized with rural wastes. In present paper, the effect of fertilization of grassland with rural wastes on sanitary quality of soil, grass, hay and silage was studied. The feeding quality of forage obtained in such condition was also investigated. It was found that the application of rural wastes...
The multipodding of pea (3 or 4 pods per stipule) is heritable, determined by two recessive genes. By crossing Souchet cv. (multiflorous edinlepea) with two cultivars of field pea - Koroza and Dwarf Gey Sugar some interesting breeding material of multipodded edible-field pea has been obtained. In this report the analysis of pod setting and estimation of some yield components of multipodded (3 pods...
A pot experiment was carried out to study the effect of adenine applied at following rates: Q, 1,10 and 100 mg per 1 kg of typical brown soil on yield and chemical composition of carrot and on numbers of soil microorganisms as well as on activity of soil enzymes. Experiment was done in two series: with or without Azotobacter sp. inoculation. The favourable effect of applied adenine together with Azotobacter...
Field trials were carried out in 1992 and 1994 at the Experimental Field in Chylice (Warsaw Agricultural University) using differentiated seed material; regular certified seeds of diameter 3-4 cm and minitubers of diameter 1-2 cm. Minitubers were obtained from the plants multiplication by in vitro technique. The influence of seed material and time of furrows formation (autumn or spring) on the total...
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