scholarly journals Succession changes of temporary grass stands on set-aside land

2011 ◽  
Vol 50 (No. 3) ◽  
pp. 108-115
Author(s):  
M. Svobodová ◽  
J. Šantrůček ◽  
J. Urbanec
Keyword(s):  
Dry Mass ◽  
Present Species ◽  
Species Number ◽  
Mass Yield ◽  
Medicago Lupulina ◽  
Coronilla Varia ◽  
Average Precipitation ◽  
Weight Method ◽  
Trifolium Repens L ◽  
Arrhenatherum Elatius

The mixtures of <i>Bromus marginatus</i> Nees ex Steud. + Coronilla varia L., Festuca pratensis L. + Lotus corniculatus L., Dactylis aschersoniana Graebn. + Trifolium repens L., Arrhenatherum elatius (L.) P. Beauv. ex J.S. et K.B. Presl + Medicago lupulina L. were sown in rows of 125 mm in the year 1997 in Prague (chernozem, altitude 281 m a.s.l., average precipitation is 472 mm per year, average year temperature 9.3°C). The stands were one or three times per year cut with the mass removing or one or two times mulched. Botanical composition (by weight method), number of present species and agrobotanical groups (grasses, legumes, other dicotyledonous) coverage were measured during 6 years of vegetation. The species number was highest on plots cut 3 times (6–17), it increased linearly. The sown species share in the dry mass yield was 75–99% and the share of grasses decreased linearly with time. The significantly highest dry mass yield was reached when mulched two times per year Bromus marginatus Nees ex Steud. with Coronilla varia L. (till 14 t/ha ). The stands coverage was 43–80%.

scholarly journals Changes of botanical composition of grass stands under different types of management

2011 ◽  
Vol 48 (No. 11) ◽  
pp. 499-504
Author(s):  
J. Šantrůček ◽  
M. Svobodová ◽  
V. Brant
Keyword(s):  
Ground Cover ◽  
Dry Mass ◽  
Present Species ◽  
Species Number ◽  
Botanical Composition ◽  
Botanical Species ◽  
Average Precipitation ◽  
Different Types ◽  
Weight Method ◽  
Arrhenatherum Elatius

A field trial with Bromus catharticus Vahl. cv. Tacit, Arrhenatherum elatius (L.) P. Beauv. ex J.S. et K.B. Presl cv. Median, Festuca pratensis Huds. cv. Otava and Dactylis aschersoniana Graebn. cv. Tosca sown in rows 125 mm, was established in the year 1996 in Prague (chernozem, altitude 281 m a.s.l., average precipitation 472 mm per year, average year temperature 9.3°C). The stands were cut one or three times per year. The mass was removed or once or twice mulched. The share of the botanical species (by weight method), number of present species and agrobotanical groups (grasses, legumes, other dicotyledonous) coverage were measured from the third to the sixth year of vegetation. The results were evaluated by the analysis of variance (Tukey α = 0.05) and by time series analysis (forecasting) by the Statgraphics Plus programme, version 4.0. The species number increased rapidly with the three times cut variant during the four years, from 4 to 25 species, under the other management it was in average from 7 to 14 species, in the sixth year. The highest share of the sown species with the lowest reduction during the years was at Arrhenatherum elatius (41–72% in the sixth year). Bromus catharticus was extinct in the fifth year. The species chosen had a higher importance for conserving of the original botanical composition than the way of harvest. There was the significantly lower ground cover with the variant  one cut per year (on average less than 70%). Mulch covered 15–64% of the surface in dependence on the dry mass yield and mulching frequency. The plants coverage was highest on the two or three times harvested variants (75–80%D).

scholarly journals The influence of grassing and harvest management on microbial parameters after arable land setting-aside

2011 ◽  
Vol 48 (No. 9) ◽  
pp. 382-388
Author(s):  
K. Voříšek ◽  
L. Růžek ◽  
M. Svobodová ◽  
J. Šantrůček ◽  
S. Strnadová ◽  
...  
Keyword(s):  
Plant Biomass ◽  
Microbial Biomass Carbon ◽  
Arable Land ◽  
Dry Mass ◽  
Harvest Management ◽  
Medicago Lupulina ◽  
Potential Nitrification ◽  
Biomass Removal ◽  
Trifolium Repens L ◽  
Arrhenatherum Elatius

During the years 1998&ndash;2000 soil chemical (C<sub>org</sub>, N<sub>t</sub>, pH), textural (sand, silt clay) and microbiological (microbial biomass carbon &ndash; CMB, microbial extracellular carbon &ndash; C<sub>EX</sub>, respiration, ammonification, nitrification) characteristics were tested on grassed chernozem [mollisol] after arable land setting-aside. Different harvest management was also tested: black and green fallow, one or two mulching per year, three cuts with plant biomass removal. For the evaluation of the influence of management and plants we have used three main criteria: (1) &micro;g C<sub>MB</sub>/g dry soil, (2) ratio CMB/C<sub>org</sub>&nbsp;(%), (3) &micro;g C<sub>EX</sub>/mg CMB or eight criteria respectively: (4) ratio of measured and model values of C<sub>MB</sub>, (5) ratio of measured and model values of C<sub>EX</sub>/C<sub>MB</sub>, (6) potential respiration with glucose, (7) potential ammonification with peptone and (8) potential nitrification with (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>. According to these criteria, the best harvest management after arable land setting-aside from 5 different systems, which were tested, could be based on one or two mulching per year. It could be stressed that the two mulching was evaluated as the best in sum of dry mass yield (27.5 for mixtures, 20.1 for legumes and 14.2 for grasses &ndash; in t/ha/3 years). The use of legumes (Trifolium repens L. &ndash; Medicago lupulina L. &ndash; Lotus corniculatus L. &ndash; Medicago media Pers.) or grasses [Bromus catharticus Vahl &ndash; Arrhenatherum elatius (L.) Presl &ndash; Festuca pratensis Huds &ndash; Dactylis aschersoniana Graebn.] as cover plants was more successful than the use of their mixtures.

Long-term fertilization experiments on a natural grassland on calcareous meadow soil

2010 ◽  
Vol 59 (2) ◽  
pp. 255-268
Author(s):  
István Harmati
Keyword(s):  
Trifolium Pratense ◽  
Poa Pratensis ◽  
Festuca Pratensis ◽  
Meadow Soil ◽  
Medicago Lupulina ◽  
Arrhenatherum Elatius ◽  
Natural Grassland ◽  
Fertilization Experiments ◽  
Agropyron Repens

Sekély humuszos szintű, erősen karbonátos réti talajon kialakult természetes (Achilleo-Festucetum pseudovinae) gyepen beállított tartamkísérletekben vizsgáltuk a műtrágyázás kérdéseit a gyep növényi összetételének megjavítása, termésének növelése és minősége javítása céljából. A kísérlet humuszban gazdag, nitrogénnel és káliummal igen jól ellátott, de foszforban szegény talaján az N- és P-műtrágya 2-2 adagját szólóban és kombinációikban alkalmaztuk. Az öntözetlen kísérletet 28, az öntözöttet 14 éven át folyamatosan, széleskörűen vizsgáltuk. Megállapításainkat a következőkben foglaljuk össze. – A gyep növényi összetételét a N- és a P-műtrágyák adagjaiktól és kombinációiktól függően megváltoztatták. A nitrogén a füvek, a foszfor a pillangósok versenyképességét fokozta és segítette elő növekedését. Az önmagában alkalmazott N-műtrágya a talaj nagyfokú P-szegénysége miatt nem gyakorolt pozitív hatást a gyepre. A P-műtrágya viszont kedvező változásokat okozott: a füvek fejlődésének elősegítése mellett nagymértékben növelte a pillangósok borítási értékét és tömegarányát, különösen az öntözött parcellákon. Öntözetlen viszonyok között a réti perje (Poa pratensis), a sovány csenkesz (Festuca pseudovina) és a komlós lucerna (Medicago lupulina) alkotta a gyep termésének túlnyomó részét, néhány egyéb fű- és pillangósvirágú komponens társaságában. Az öntözött kísérletben a pillangósok abszolút uralma mellett gyakran a réti perje jutott vezető szerephez. A pillangósok közül az eperhere (Trifolium fragiferum), a komlós lucerna (Medicago lupulina) és a vörös here (Trifolium pratense) váltakozva jutott uralomra. Az időjárás nagyban befolyásolta a gyep pillangós komponenseinek tömegarányát. Az NP kombinációkban a pillangósok tömegaránya erősen lecsökkent, különösen a nagyobb N-adag használata esetén. Öntözetlen területen a sovány csenkesz és a réti perje változó arányban alkotta a gyep termésének túlnyomó részét. Az öntözött parcellákon azonban a réti perje abszolút uralkodóvá vált és az egyre jobban előretörő tarackbúza (Agropyron repens) is jelentősen részt vett a termés kialakításában, elsősorban a nagyobb N-dózisú kombinációkban. A kísérlet 3. évtizedében a csapadékos években megjelent a francia perje (Arrhenatherum elatius) és a réti csenkesz (Festuca pratensis) is. – A gyep termését az önmagában alkalmazott N-műtrágya nem növelte jelentősen. Ezzel szemben a P-műtrágya nagy hatékonysággal 2–4-szeresére (3–5 t·ha–1-ra) növelte a gyep szénatermését, elsősorban a pillangósok nagyarányú térhódítása révén. 1 kg P2O5 öntözetlen körülmények között 43, míg öntözöttben 68 kg szénaterméstöbbletet eredményezett, sokévi átlagban. A 90 kg P2O5·ha–1 adag néhány év után soknak bizonyult. A legjobb eredményt a 200 kg N·ha–1 + 60 kg P2O5·ha–1 adaggal értük el, amellyel az öntözetlen területen – 28 év átlagában – 7,87, öntözötten – 14 év átlagában – 7,12 t·ha–1 szénatermést kaptunk. Az időjárás nagymértékben befolyásolta a termés mennyiségét és minőségét, legfőképpen a pillangósok tömegarányának változása révén, különösen az öntözetlen kísérletben. A három növedék tömegének aránya 7 évi átlagban, az öntözetlen kísérletben a szóló foszforkezeléseknél 48:37:15%, míg az NP kombinációknál 56:35:9% volt. Az öntözött területen ezek az arányok az előbbi sorrendben: 39:49:12, illetve 43:41:16%. A nitrogénből számított nyersfehérjehozam sokévi átlagban az öntözetlen kísérletben 428–550, míg az öntözöttben 560–760 kg·ha–1 volt. – A talaj felvehető tápanyagtartalma az évek során jelentősen megváltozott, különösen a talaj 0–10 cm-es rétegében. A P-trágyázás önmagában, de az NP kombinációiban is az adagoktól, illetve az ezek hatására kialakult termések mennyiségétől függő mértékben növelte a talaj P-tartalmát. A legjobbnak a 200 kg N·ha–1 + 60 kg P2O5·ha–1 kezelésű parcellákban bizonyult: a kísérlet 22. évében a talaj 0–10 cm-es rétegében a P-tartalom 260 mg P2O5·kg–1 lett, ami az erősen karbonátos talajok esetében igen jó P-ellátottságnak mondható. A K-ellátottság azonban az NP-kezeléseknél az optimális szint alá csökkent (172 mg K2O·kg–1) a termések nagyarányú K-kivonása következtében. Ezért néhány évi NP-trágyázás után K-pótlásra is szükség van.

scholarly journals Nutritional and biochemical changes induced by lead in sunflower (Helianthus annuus L.)

2016 ◽  
Vol 37 (3) ◽  
pp. 1229 ◽  
Author(s):  
Claudia Brito de Abreu ◽  
Bárbara Lima do Sacramento ◽  
Andréia Teixeira Alves ◽  
Silvany Cardim Moura ◽  
Milena Santos Pinelli ◽  
...  
Keyword(s):  
Helianthus Annuus ◽  
Cell Metabolism ◽  
Dry Mass ◽  
Soluble Carbohydrate ◽  
Mass Yield ◽  
Growth Reduction ◽  
Biochemical Indicator ◽  
Organic Solute ◽  
Induced Changes ◽  
Pb Concentration

The aim of this study was to evaluate the effects of increasing concentrations of lead (Pb) in the nutrient solution on growth and macronutrient and organic solute contents of Helianthus annuus plants. The experimental design was completely randomized with four replications. The dry mass yield was not affected by the treatments up to a Pb concentration of 0.6 mM, indicating that H. annuus was tolerant to this Pb concentration in the growth medium. The reductions in leaf, stem and root dry masses at a Pb concentration of 0.8 mM were 74, 84 and 85%, respectively. Lead stress did not reduce the levels of nitrogen (N), phosphorus (P) and potassium (K), indicating that the growth reduction observed at 0.8 mM Pb could not be attributed to deficiencies of these nutrients. On the other hand, Pb significantly reduced calcium (Ca) and magnesium (Mg) contents in leaves, stems and roots, which might, at least in part, explain the Pb-induced growth reduction in the H. annuus plants. Pb increased soluble carbohydrate, free amino acid and proline contents in leaves, and soluble protein and proline contents in roots, showing stress-induced changes in cell metabolism. The data also suggest that Ca and Mg concentrations may be used as nutritional indicators and the proline content may be used as a biochemical indicator of Pb toxicity in H. annuus.

Influence of cutting management on productivity and nutritional value of perennial grasses

2019 ◽  
Author(s):  
Л. Евстратова ◽  
Г. Евсеева ◽  
С. Смирнов ◽  
А. Камова
Keyword(s):  
Protein Concentration ◽  
Nutritional Value ◽  
Energy Content ◽  
Regional Climate ◽  
Dry Mass ◽  
Perennial Grasses ◽  
Mass Yield ◽  
Smooth Brome ◽  
Cutting Management ◽  
The Republic

В условиях Республики Карелия в 20152018 годах проведены трёхлетние научные исследования по определению оптимальных режимов скашивания и оценке их влияния на продуктивные и качественные характеристики бобовозлаковых травостоев с включением интродуцированных культур Medicago varia Mart. (сорт Таисия) и Festulolium F. Aschers.et Graebn. (сорт ВИК 90). Установлено, что в агроценозах массовая доля люцерны изменчивой при двуукосном режиме скашивания динамично возрастала с 4,029,1 до 34,442,2, а при трёхукосном с 3,927,6 до 48,860,3. Традиционный бобовый компонент Trifolium hybridum L. (сорт Первенец), наоборот, снизил своё участие в травостое с 22,451,4 до 1,315,3 и с 27,440,0 до 0,713,9 соответственно. Фестулолиум доминировал в травостое при трёхкратном скашивании в 1й и 2й годы пользования (56,1 и 69,5) и при двукратном во 2й и 3й годы (58,6 и 54,0). В среднем за 3 года как при двух, так и при трёхукосном режиме скашивания высокие показатели урожайности сухой массы (7,559,13 т/га), энергетической (6,2110,09 тыс. корм. ед./га 79,794,7 ГДж/га) и протеиновой (0,811,31 т/га) продуктивности обеспечили травостои: кострец безостый люцерна изменчивая клевер гибридный фестулолиум люцерна изменчивая клевер гибридный. Рассматриваемые значения превысили контроль (клеверозлаковый травостой) в 1,11,7 раза. Независимо от состава фитоценоза трёхкратное использование травостоев имело преимущество (на 18,661,7) только по сбору сырого протеина. В типичных погодных условиях полевого сезона лучшие результаты получены при двукратном режиме скашивания бобовозлаковых травостоев, а в экстремальных при трёхкратном. Последний обеспечил более равномерное распределение урожая зелёной массы по укосам и высокие показатели питательности корма. The investigations took place in the Republic of Karelia in 20152018. It was aimed to test cutting managements and their influence on grass productivity and quality and determine the optimal one. Legumegramineous ecosystems contained Medicago varia Mart. (variety Taisiya) and Festulolium F. Aschers.et Graebn. (variety VIK 90). The proportion of bastard alfalfa increased from 4.029.1 to 34.442.2 under two cuts, and from 3.927.6 to 48.860.3 under three cuts. The fraction of conventional grass component Trifolium hybridum L. (variety Pervenets) reduced from 22.451.4 to 1.315.3 and from 27.440.0 to 0.713.9, respectively. Festulolium prevailed in the 1st and 2nd years under three cuts (56.1 and 69.5) as well as in the 2nd and 3rd years under two cuts (58.6 and 54.0). Mixtures of smooth brome bastard alfalfa alsike clover festulolium bastard alfalfa alsike clover had the highest dry mass yield (7.559.13 t ha1), energy content (6.2110.09 thousand feed units ha1 79.794.7 GJ ha1) and protein concentration (0.811.31 t ha1). These values exceeded the ones of the control (clovergramineous mixture) by 1.11.7 times. Three cuts provided 18.661.7 more protein. Two cuts gave better results under typical regional climate, but three cuts were advantageous under unfavorable conditions.

scholarly journals POLYCULTURES OF CORIANDER, CARROT, AND ARUGULA IN STRIP-INTERCROPPING SYSTEM

2017 ◽  
Vol 30 (3) ◽  
pp. 622-632 ◽  
Author(s):  
PAULO CÁSSIO ALVES LINHARES ◽  
JAILMA SUERDA SILVA DE LIMA ◽  
FRANCISCO BEZERRA NETO ◽  
GARDÊNIA SILVANA DE OLIVEIRA RODRIGUES ◽  
ARIDÊNIA PEIXOTO CHAVES
Keyword(s):  
Efficiency Index ◽  
Dry Mass ◽  
Productive Efficiency ◽  
Net Income ◽  
Mass Yield ◽  
Land Equivalent Ratio ◽  
Green Mass ◽  
Green Mass Yield ◽  
Strip Intercropping ◽  
Efficiency Indicators

ABSTRACT The objective of this research was to evaluate combinations of cultivars of coriander and arugula in two croppings with cultivars of carrot in a strip-intercropping system. The study was conducted from November 2014 to March 2015. The experimental design was a randomized complete block in a 2 x 2 x 2 + 2 factorial scheme, with four replications. The treatments consisted of the combination of two cultivars of coriander (Verdão and Português) with two cultivars of carrot (Brasília and Esplanada) and two cultivars of arugula (Cultivada and Folha Larga) in a strip-intercropping system plus two additional treatments, where the first represents the cultivars in monocropping and the second the cultivation types (monocropping and intercropping). The characteristics evaluated in the coriander and arugula were green mass yield and shoot dry mass. The following were evaluated in carrot: shoot dry mass, dry mass of roots, total and commercial productivity, and classified productivity of roots. In the intercropping system, the agronomic indices of land equivalent ratio, productive efficiency index, and score of the canonical variable were evaluated. The economic efficiency indicators determined were gross and net income, rate of return, profit margin, monetary advantage, and modified monetary advantage. There was no significant interaction among the cultivars of coriander, carrot, and arugula for coriander and arugula green mass yields, and for total and commercial productivities of carrot roots. The best polyculture was of that involved in the cultivars ―Português,‖ ―Esplanada,‖ and ―Cultivada‖.

scholarly journals Survival and injuries of Deois flavopicta (Stal., 1854) in pastures under seed treatment with insecticides and dry mass yield

2018 ◽  
Vol 85 (0) ◽  
Author(s):  
Marcelo Francisco Arantes Pereira ◽  
Alvaro de Favare Junior ◽  
Alexander Machado Auad ◽  
Marilia Gregolin Costa
Keyword(s):  
Seed Treatment ◽  
Rating Scale ◽  
Dry Mass ◽  
Mass Yield ◽  
F Test ◽  
Yield Data ◽  
Brachiaria Decumbens ◽  
Forage Species

ABSTRACT: The present study evaluated the survival and injuries of Deois flavopicta (Hemiptera: Cercopidae) in pastures of Urochloa (Syn. Brachiaria) decumbens and U. brizantha, submitted to seed treatment with fipronil (Amulet®) and thiamethoxam (Cruiser 350 FS®), and dry mass yield. The experiment, carried out at the APTA Experimental Unity, São José do Rio Preto, SP, Brazil, was designed in randomly blocks, with six treatments (factorial 2x3) and four replications. Sowing was manual, with 12.0 kg ha-1 seeds. Twenty adults were released on the plot, in a 40x40x70 cm cage, forty-nine days after sowing. The insects were sampled every two days during twelve days, without replacement of dead insects. Injuries caused by the spittlebug were evaluated by a rating scale and by productivity (dry mass yield). Data were analyzed by F-test and means compared by Tukey’s test (p≤0.05). The survival of adults was higher in the U. decumbens pasture than in the U. brizantha pasture. Results show that seed treatment with thiamethoxam reduced the survival of D. flavopicta in pasture formation, but did not influence the injuries caused by insect and the dry mass yield of forage species.

scholarly journals Potato plant growth and macronutrient uptake as affected by soil tillage and irrigation systems

2006 ◽  
Vol 41 (12) ◽  
pp. 1787-1792 ◽  
Author(s):  
Julio Cezar Silveira Nunes ◽  
Paulo Cezar Rezende Fontes ◽  
Eduardo Fontes Araújo ◽  
Carlos Sediyama
Keyword(s):  
Plant Growth ◽  
Potato Plant ◽  
Block Design ◽  
Dry Mass ◽  
Soil Tillage ◽  
Mass Yield ◽  
Irrigation Systems ◽  
Area Index ◽  
Randomized Block Design ◽  
Moldboard Plow

The objective of this study was to evaluate potato plant growth and macronutrient uptake, as affected by soil tillage methods, in sprinkle and drip irrigated experiments. Eight treatments were set: T1, no tillage, except for furrowing before planting; T2, one subsoiling (SS); T3, twice rotary hoeing (RH); T4, one disc plowing (DP) + twice disc harrow leveling (DL); T5, 1DP + 2DL + 1RH; T6, 1DP + 2DL + 2RH; T7, 1SS + T6; T8, one moldboard plowing (MP) + 2DL. Treatments were arranged in a randomized block design with four replications. In both irrigation systems, plants presented higher emergence velocity index (EVI), when the soil was not tillaged, and the EVI was inversely related to the maximum tuber dry mass production. In both experiments, a functional direct relationship was found between the leaf area index and maximum tuber dry mass yield. The growth of plant organs (tuber, leaf, stem and root) and the macronutrient (N, P, K, Ca and Mg) contents in potato plant responded positively to a deeper soil revolving caused by plowing, especially with moldboard plow.

scholarly journals Effect of Seed Coating and PEG-Induced Drought on the Germination Capacity of Five Clover Crops

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 724
Author(s):  
Antonín Kintl ◽  
Igor Huňady ◽  
Tomáš Vymyslický ◽  
Vladěna Ondrisková ◽  
Tereza Hammerschmiedt ◽  
...  
Keyword(s):  
Drought Resistance ◽  
Seed Coating ◽  
Germination Capacity ◽  
Onobrychis Viciifolia ◽  
Medicago Lupulina ◽  
Anthyllis Vulneraria ◽  
Melilotus Albus ◽  
Trifolium Repens L ◽  
Peg 8000 ◽  
Coated Seed

The effect of coating the seed of clover crops by water absorbing seed process (WASP) technology pelletization on its germination capacity was studied in conditions of diverse drought intensities simulated by different concentrations of polyethylenglycol (PEG) 8000 solution. Drought resistance was monitored in the seed of five fodder clover species: Anthyllis vulneraria L., Medicago lupulina L., Trifolium repens L., Melilotus albus Medik. and Onobrychis viciifolia Scop. In the seed of given plant species, germination capacity was determined along with the share of dead and hard seeds. Although the coating significantly (p < 0.05) affected the drought resistance of seeds, the germination capacity increased only in conditions of milder drought (simulation with PEG: 0.1–0.3 mol). With the increasing intensity of drought induced by higher PEG concentrations (0.4–0.7 mol) the number of germinable seeds demonstrably decreased and the number of dead seeds increased in the coated seed as compared with the uncoated seed. The coated seed can be appropriate for use in M. lupulina, M. albus and T. repens, while the uncoated seed can be used in A. vulneraria and O. viciifolia.

scholarly journals INFLUENCE OF SOIL TILLAGE METHODS AND FERTILIZER ON CROP PRODUCTIVITY AND CORPORATION OF CORN SOWINGS

2018 ◽  
Vol 12 (4) ◽  
pp. 75-79
Author(s):  
Владимир Фомин ◽  
Vladimir Fomin ◽  
Макарим Нафиков ◽  
Makarim Nafikov ◽  
Вячеслав Медведев ◽  
...  
Keyword(s):  
Crop Productivity ◽  
Dry Mass ◽  
Nitrogen Fertilizers ◽  
Soil Tillage ◽  
Corn Yield ◽  
Mass Yield ◽  
Green Mass ◽  
Annual Grasses ◽  
The Republic ◽  
Green Mass Yield

The article presents the results of studies, conducted from 2014 to 2016 in the Western Kama region of the Republic of Tatarstan, for the purpose of comparative study the basic soil cultivation methods and the introduction of various types of nitrogen fertilizers for crop, cultivated for silage. Predecessor - annual grasses (vetch + oats). The dynamics of weediness of crops, its air-dry mass and green mass yield of corn in the phase of milk-wax ripeness were determined. For three years of research, the highest corn yield of green mass was obtained in the sixth variant (background + N120) - 406.6 centner per hectare. Economically advantageous was the dose of ammonia N120, where payment of one kilogram of active matter of fertilizers for the dumping of plowing amounted to 159 kg of green mass.

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