Query : pochvoznanie

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Journal Article

Journal article

From:
Institute of Agricultural Economics

On the basis of the data of 6th cycle of a many year field experiment, an attempt has been done to find the relative effect of the annual and supplying nitrogen fertilization on the yield, nitrogen uptake by plants with various combination of phosphorus and potassium fertilization. The experiment was conducted on leached chernozem (haplic vertisols, FAO) by the atention of maize (variety H-708 ...

SUBJECT: nitrogen fertilizers; maнz; abonos nitrogenados; productividad; trigo

POSTED TO: Soil Science, Agrochemistry and Ecology [0861-9425]

The effect of soil variety, plant density and nitrogen fertilizer rate on the forming of leaf area index (LAI) during the vegetation period of maize has been analyzed. The investigation is based on the information, obtained from a three year multifactorial field experiment at non-irrigated conditions, conducted in two soil varieties. The optimal LAI values are obtained at plant density 6500 pl ...

SUBJECT: indice de superficie foliar; soil types; tipos de suelos; maiz; zea mays

POSTED TO: Soil Science, Agrochemistry and Ecology [0861-9425]

The effect of two soil varieties on the dry matter accumulation during the vegetation period has been investigated. Three year field experiments have been carried out on haplic chernozems from Gorni Dabnik and on Vertisls from Sredets. It has been established, that the maximal dry matter production is obtained at plant density 6500 plants/da on the two soil varieties.

SUBJECT: teneur en matiere seche; contenido de materia seca; periode vegetative; soil types; dry matter content

POSTED TO: Soil Science, Agrochemistry and Ecology [0861-9425]

Based on data of 3-year field experiment with maize (H 708 hybrid) on two soil varieties and different irrigation levels the economocally optimal nitrogen fertilizer rate and plant density have been estimated. The production and economic risks, depending on plant density, irrigation and nitrogen fertilizer rate have been analyzed. On the basis of these assessments it has made attempt to specif ...

SUBJECT: soil types; aplicacion de abonos; population vegetale; maize; mais

POSTED TO: Journal of Agricultural Science and Forest Science [1312-0751]

SUBJECT: soil types; bulgaria; bulgarie; biological differences; bacterie fixatrice de l'azote

POSTED TO: Soil Science Agrochemistry and Ecology [0861-9425]

Journal Article

Journal article

From:
Institute of Agricultural Economics

SUBJECT: efficacite; biometry; composante de rendement; rotational cropping; efficiency

POSTED TO: Pochvoznanie, Agrokhimiya i Ekologiya [0861-9425]

Journal Article

Journal article

From:
Institute of Agricultural Economics

SUBJECT: experimentation au champ; meteorological elements; rendement des cultures; field experimentation; plant water relations

POSTED TO: Pochvoznanie, Agrokhimiya i Ekologiya [0861-9425]

Journal Article

Journal article

From:
Institute of Agricultural Economics

SUBJECT: soil water movement; soil air relations; fertilite du sol; relaciones suelo aire; movimiento del agua en el suelo

POSTED TO: Pochvoznanie i Agrochimiya [0554-341X]

Journal Article

Journal article

From:
Institute of Agricultural Economics

SUBJECT: biomass; triticum aestivum; engrais npk; npk fertilizers; aplicacion de abonos

POSTED TO: Pochvoznanie, Agrokhimiya i Ekologiya [0861-9425]

Journal Article

Journal article

From:
Institute of Agricultural Economics

SUBJECT: triticum aestivum; rotational cropping; engrais npk; npk fertilizers; abonos npk

POSTED TO: Pochvoznanie, Agrokhimiya i Ekologiya [0861-9425]