Titre de série :	Nigerian Agricultural journal
Titre :	Some physical properties of soils at Samaru, Zaria, Nigeria / storage of water and its use bycrops. 3- Seasonal pattern in soil water changes under various vegetation covers and base fallow
Type de document :	texte imprimé
Auteurs :	Kowal, J.
Mention d'édition :	Abiodun printing works LTD
Editeur :	Abiodun printing works LTD
Année de publication :	April 1969
ISBN/ISSN/EAN :	CI-04504
Note générale :	Seasonal pattern in soil water changes under various vegetation covers and bare follow was studied using a neutron meter during the 1967-8 season. At the begining of the growing season the soil moisture deficit ranged from 4.6 in. for bare follow to 10.7 in. for indigenous bush vegetation with crops occupying an intermediate position. Recharge of soil profile was gradual and was completed by the end of july when cumulative rainfall of the season reached 21 in. During the period of recharge, the amount and distribution of rainfall was such tht full potential evapo-transpiration rates were maintained. The surface run off during this period was negligible. The main growing season in August and September was characterised by surplus rainfall well in excess of evapo-transpiration demands, the surplus water was stored in the form of a raised water- table, but considerable amounts may be lost in surface run-off.
Langues :	Anglais (eng)
Mots-clés :	Bilan hydrique  Saison des pluies  Pluviométrie  Evapotranspiration  Besoin en eau des plantes  Physique du sol  Méthodologie  Stockage d'eau  Utilisation de l'eau  Calcul hydraulique
Index. décimale :	621.2 Hydraulique : turbines, pompes, accumulateurs, transmission hydraulique
Résumé :	Seasonal pattern in soil water changes under various vegetation covers and bare follow was studied using a neutron meter during the 1967-8 season. At the begining of the growing season the soil moisture deficit ranged from 4.6 in. for bare follow to 10.7 in. for indigenous bush vegetation with crops occupying an intermediate position. Recharge of soil profile was gradual and was completed by the end of july when cumulative rainfall of the season reached 21 in. During the period of recharge, the amount and distribution of rainfall was such tht full potential evapo-transpiration rates were maintained. The surface run off during this period was negligible. The main growing season in August and September was characterised by surplus rainfall well in excess of evapo-transpiration demands, the surplus water was stored in the form of a raised water- table, but considerable amounts may be lost in surface run-off.
Note de contenu :	Seasonal pattern in soil water changes under various vegetation covers and bare follow was studied using a neutron meter during the 1967-8 season. At the begining of the growing season the soil moisture deficit ranged from 4.6 in. for bare follow to 10.7 in. for indigenous bush vegetation with crops occupying an intermediate position. Recharge of soil profile was gradual and was completed by the end of july when cumulative rainfall of the season reached 21 in. During the period of recharge, the amount and distribution of rainfall was such tht full potential evapo-transpiration rates were maintained. The surface run off during this period was negligible. The main growing season in August and September was characterised by surplus rainfall well in excess of evapo-transpiration demands, the surplus water was stored in the form of a raised water- table, but considerable amounts may be lost in surface run-off.

Nigerian Agricultural journal. Some physical properties of soils at Samaru, Zaria, Nigeria / storage of water and its use bycrops. 3- Seasonal pattern in soil water changes under various vegetation covers and base fallow [texte imprimé] / Kowal, J.  . -  Abiodun printing works LTD . - Abiodun printing works LTD, April 1969.
ISSN : CI-04504
Seasonal pattern in soil water changes under various vegetation covers and bare follow was studied using a neutron meter during the 1967-8 season. At the begining of the growing season the soil moisture deficit ranged from 4.6 in. for bare follow to 10.7 in. for indigenous bush vegetation with crops occupying an intermediate position. Recharge of soil profile was gradual and was completed by the end of july when cumulative rainfall of the season reached 21 in. During the period of recharge, the amount and distribution of rainfall was such tht full potential evapo-transpiration rates were maintained. The surface run off during this period was negligible. The main growing season in August and September was characterised by surplus rainfall well in excess of evapo-transpiration demands, the surplus water was stored in the form of a raised water- table, but considerable amounts may be lost in surface run-off.
Langues : Anglais (eng)

Mots-clés :	Bilan hydrique  Saison des pluies  Pluviométrie  Evapotranspiration  Besoin en eau des plantes  Physique du sol  Méthodologie  Stockage d'eau  Utilisation de l'eau  Calcul hydraulique
Index. décimale :	621.2 Hydraulique : turbines, pompes, accumulateurs, transmission hydraulique
Résumé :	Seasonal pattern in soil water changes under various vegetation covers and bare follow was studied using a neutron meter during the 1967-8 season. At the begining of the growing season the soil moisture deficit ranged from 4.6 in. for bare follow to 10.7 in. for indigenous bush vegetation with crops occupying an intermediate position. Recharge of soil profile was gradual and was completed by the end of july when cumulative rainfall of the season reached 21 in. During the period of recharge, the amount and distribution of rainfall was such tht full potential evapo-transpiration rates were maintained. The surface run off during this period was negligible. The main growing season in August and September was characterised by surplus rainfall well in excess of evapo-transpiration demands, the surplus water was stored in the form of a raised water- table, but considerable amounts may be lost in surface run-off.
Note de contenu :	Seasonal pattern in soil water changes under various vegetation covers and bare follow was studied using a neutron meter during the 1967-8 season. At the begining of the growing season the soil moisture deficit ranged from 4.6 in. for bare follow to 10.7 in. for indigenous bush vegetation with crops occupying an intermediate position. Recharge of soil profile was gradual and was completed by the end of july when cumulative rainfall of the season reached 21 in. During the period of recharge, the amount and distribution of rainfall was such tht full potential evapo-transpiration rates were maintained. The surface run off during this period was negligible. The main growing season in August and September was characterised by surplus rainfall well in excess of evapo-transpiration demands, the surplus water was stored in the form of a raised water- table, but considerable amounts may be lost in surface run-off.