Soil moisture and its use by plants in relation to some agrotechnical factors

abonos npk analytical methods bilan hydrique du sol brassica oleracea contenido de agua en el suelo crop yield cultivos de invierno cultivos de primavera culture d'hiver culture de printemps dose d'irrigation dosis de riego engrais npk experimentation fertilisation fertilizer application grain granos hordeum vulgare irrigation rates loam soils loess loess soils lysimeters npk fertilizers paille paja poland pologne polonia rendement des cultures rendimiento de cultivos rotation culturale rotational cropping sandy soils soil chemicophysical properties soil texture soil types soil water balance soil water content sol de loess sol sableux sol sablolimoneux solanum tuberosum spring crops statistical methods straw suelo arenoso suelo franco technique analytique teneur en eau du sol textura del suelo texture du sol tipos de suelos triticum aestivum tubercule tubers type de sol weather data winter crops