Samaru Miscellaneous Paper, 13. Some preliminary observations on the performance of sugar-cane at agricultural irrigation research station, Kpong, Ghana / Kowal, J. M.

Public ISBD Titre de série : Samaru Miscellaneous Paper, 13 Titre : Some preliminary observations on the performance of sugar-cane at agricultural irrigation research station, Kpong, Ghana Type de document : texte imprimé Auteurs : Kowal, J. M. ; Hill, P. R. Mention d'édition : Ahmady Bello University/Institute for Agricultural Research Samaru Editeur : Ahmady Bello University/Institute for Agricultural Research Samaru Année de publication : 1965 ISBN/ISSN/EAN : CI-04515 Note générale : The yield of sugar-cane grown on the black clay soils is markedly influenced by land development technique, soil management, variety and time of planting. Levelling of land for purpose of irrigation-itself a constly operation-may be detrimental to crop production where the soil profile is other than very deep. Furrow irrigation to a prescribed gradient after land clearing and planing is a practicable technique for crop production and lends itself to the topography of the accra plains. Langues : Anglais (eng) Mots-clés : Irrigation  Canne à sucre  Evaporation  Evapotranspiration  PRECIPITATIONS  Besoin en eau des plantes  Fertilité du sol Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : The yield of sugar-cane grown on the black clay soils is markedly influenced by land development technique, soil management, variety and time of planting. Levelling of land for purpose of irrigation-itself a constly operation-may be detrimental to crop production where the soil profile is other than very deep. Furrow irrigation to a prescribed gradient after land clearing and planing is a practicable technique for crop production and lends itself to the topography of the accra plains. Note de contenu : The yield of sugar-cane grown on the black clay soils is markedly influenced by land development technique, soil management, variety and time of planting. Levelling of land for purpose of irrigation-itself a constly operation-may be detrimental to crop production where the soil profile is other than very deep. Furrow irrigation to a prescribed gradient after land clearing and planing is a practicable technique for crop production and lends itself to the topography of the accra plains. Samaru Miscellaneous Paper, 13. Some preliminary observations on the performance of sugar-cane at agricultural irrigation research station, Kpong, Ghana [texte imprimé] / Kowal, J. M. ; Hill, P. R.  . -  Ahmady Bello University/Institute for Agricultural Research Samaru . - Ahmady Bello University/Institute for Agricultural Research Samaru, 1965. ISSN : CI-04515 The yield of sugar-cane grown on the black clay soils is markedly influenced by land development technique, soil management, variety and time of planting. Levelling of land for purpose of irrigation-itself a constly operation-may be detrimental to crop production where the soil profile is other than very deep. Furrow irrigation to a prescribed gradient after land clearing and planing is a practicable technique for crop production and lends itself to the topography of the accra plains. Langues : Anglais (eng) Mots-clés : Irrigation  Canne à sucre  Evaporation  Evapotranspiration  PRECIPITATIONS  Besoin en eau des plantes  Fertilité du sol Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : The yield of sugar-cane grown on the black clay soils is markedly influenced by land development technique, soil management, variety and time of planting. Levelling of land for purpose of irrigation-itself a constly operation-may be detrimental to crop production where the soil profile is other than very deep. Furrow irrigation to a prescribed gradient after land clearing and planing is a practicable technique for crop production and lends itself to the topography of the accra plains. Note de contenu : The yield of sugar-cane grown on the black clay soils is markedly influenced by land development technique, soil management, variety and time of planting. Levelling of land for purpose of irrigation-itself a constly operation-may be detrimental to crop production where the soil profile is other than very deep. Furrow irrigation to a prescribed gradient after land clearing and planing is a practicable technique for crop production and lends itself to the topography of the accra plains.

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Samaru Miscellaneous Paper, 33. A socio-economic study of three villages in the Sokoto close settleo zone: 1. Land and people / Goddard, A. D.

Public ISBD Titre de série : Samaru Miscellaneous Paper, 33 Titre : A socio-economic study of three villages in the Sokoto close settleo zone: 1. Land and people Type de document : texte imprimé Auteurs : Goddard, A. D. ; Fine, J. C. ; Norman, D. W. Mention d'édition : Institute for Agriculture Research Editeur : Institute for Agriculture Research Année de publication : 1971 ISBN/ISSN/EAN : CI-03980 Note générale : This report is concerned with the central Sokoto close-settled zone which contains an extensive belt predominantly under annual cultivation some 70 miles north-south and 20 miles east-west with extensions along the Rima and Sokoto river valleys. Population densities throughout this belt are above 150-200 per square mile. The study villages were there fore chosen to represent each of three locational types of economic importance in the area. Langues : Anglais (eng) Mots-clés : Agriculture  Méthodologie  Demographie  Population  Sol  Occupation du sol  Socio-économie Index. décimale : 330 Economie Résumé : This report is concerned with the central Sokoto close-settled zone which contains an extensive belt predominantly under annual cultivation some 70 miles north-south and 20 miles east-west with extensions along the Rima and Sokoto river valleys. Population densities throughout this belt are above 150-200 per square mile. The study villages were there fore chosen to represent each of three locational types of economic importance in the area. Note de contenu : This report is concerned with the central Sokoto close-settled zone which contains an extensive belt predominantly under annual cultivation some 70 miles north-south and 20 miles east-west with extensions along the Rima and Sokoto river valleys. Population densities throughout this belt are above 150-200 per square mile. The study villages were there fore chosen to represent each of three locational types of economic importance in the area. Samaru Miscellaneous Paper, 33. A socio-economic study of three villages in the Sokoto close settleo zone: 1. Land and people [texte imprimé] / Goddard, A. D. ; Fine, J. C. ; Norman, D. W.  . -  Institute for Agriculture Research . - Institute for Agriculture Research, 1971. ISSN : CI-03980 This report is concerned with the central Sokoto close-settled zone which contains an extensive belt predominantly under annual cultivation some 70 miles north-south and 20 miles east-west with extensions along the Rima and Sokoto river valleys. Population densities throughout this belt are above 150-200 per square mile. The study villages were there fore chosen to represent each of three locational types of economic importance in the area. Langues : Anglais (eng) Mots-clés : Agriculture  Méthodologie  Demographie  Population  Sol  Occupation du sol  Socio-économie Index. décimale : 330 Economie Résumé : This report is concerned with the central Sokoto close-settled zone which contains an extensive belt predominantly under annual cultivation some 70 miles north-south and 20 miles east-west with extensions along the Rima and Sokoto river valleys. Population densities throughout this belt are above 150-200 per square mile. The study villages were there fore chosen to represent each of three locational types of economic importance in the area. Note de contenu : This report is concerned with the central Sokoto close-settled zone which contains an extensive belt predominantly under annual cultivation some 70 miles north-south and 20 miles east-west with extensions along the Rima and Sokoto river valleys. Population densities throughout this belt are above 150-200 per square mile. The study villages were there fore chosen to represent each of three locational types of economic importance in the area.

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Samaru Miscellaneous Paper, 44. Construction and prformance of a hydraulic weighing lysimeter at Samaru, Nigeria / Kowal, J.

Public ISBD Titre de série : Samaru Miscellaneous Paper, 44 Titre : Construction and prformance of a hydraulic weighing lysimeter at Samaru, Nigeria Type de document : texte imprimé Auteurs : Kowal, J. ; Stoskinger, K. R. Mention d'édition : Institute for Agricultural Research, Samaru/ahmadu Bello University Editeur : Institute for Agricultural Research, Samaru/Ahmadu Bello University Année de publication : 1973 ISBN/ISSN/EAN : CI-04511 Note générale : A critical factor affecting crop production in the savana zone of west Africa is the availability of water to crops. To estimate the amount of water available for crops it is necessary to know the amount of supply by rainfall or irrigation, the amount used in evapotranspiration can be estimated by measuring changes in soil moisture by direct sampling, with tensiometers or a neutron probe or by calculation from meteorological data using formulae such as that of Penman (1948) or thornthwaite (1954). Penman's method only estimates the evaporation from a free water surface and Thornthwaite's formula is not very accusate for short periods. This paper describes the construction and performance of an hydraulic weighing bysineter that has been used successfully at Samaru since 1968. Langues : Anglais (eng) Mots-clés : Hydrologie  Pluviométrie  Production agricole  Evaporation  Evapotranspiration  Mesure et observation  Limnimétrie  Méthode de Penman Index. décimale : 551.48 Hydrologie : Résumé : A critical factor affecting crop production in the savana zone of west Africa is the availability of water to crops. To estimate the amount of water available for crops it is necessary to know the amount of supply by rainfall or irrigation, the amount used in evapotranspiration can be estimated by measuring changes in soil moisture by direct sampling, with tensiometers or a neutron probe or by calculation from meteorological data using formulae such as that of Penman (1948) or thornthwaite (1954). Penman's method only estimates the evaporation from a free water surface and Thornthwaite's formula is not very accusate for short periods. This paper describes the construction and performance of an hydraulic weighing bysineter that has been used successfully at Samaru since 1968. Note de contenu : A critical factor affecting crop production in the savana zone of west Africa is the availability of water to crops. To estimate the amount of water available for crops it is necessary to know the amount of supply by rainfall or irrigation, the amount used in evapotranspiration can be estimated by measuring changes in soil moisture by direct sampling, with tensiometers or a neutron probe or by calculation from meteorological data using formulae such as that of Penman (1948) or thornthwaite (1954). Penman's method only estimates the evaporation from a free water surface and Thornthwaite's formula is not very accusate for short periods. This paper describes the construction and performance of an hydraulic weighing bysineter that has been used successfully at Samaru since 1968. Samaru Miscellaneous Paper, 44. Construction and prformance of a hydraulic weighing lysimeter at Samaru, Nigeria [texte imprimé] / Kowal, J. ; Stoskinger, K. R.  . -  Institute for Agricultural Research, Samaru/ahmadu Bello University . - Institute for Agricultural Research, Samaru/Ahmadu Bello University, 1973. ISSN : CI-04511 A critical factor affecting crop production in the savana zone of west Africa is the availability of water to crops. To estimate the amount of water available for crops it is necessary to know the amount of supply by rainfall or irrigation, the amount used in evapotranspiration can be estimated by measuring changes in soil moisture by direct sampling, with tensiometers or a neutron probe or by calculation from meteorological data using formulae such as that of Penman (1948) or thornthwaite (1954). Penman's method only estimates the evaporation from a free water surface and Thornthwaite's formula is not very accusate for short periods. This paper describes the construction and performance of an hydraulic weighing bysineter that has been used successfully at Samaru since 1968. Langues : Anglais (eng) Mots-clés : Hydrologie  Pluviométrie  Production agricole  Evaporation  Evapotranspiration  Mesure et observation  Limnimétrie  Méthode de Penman Index. décimale : 551.48 Hydrologie : Résumé : A critical factor affecting crop production in the savana zone of west Africa is the availability of water to crops. To estimate the amount of water available for crops it is necessary to know the amount of supply by rainfall or irrigation, the amount used in evapotranspiration can be estimated by measuring changes in soil moisture by direct sampling, with tensiometers or a neutron probe or by calculation from meteorological data using formulae such as that of Penman (1948) or thornthwaite (1954). Penman's method only estimates the evaporation from a free water surface and Thornthwaite's formula is not very accusate for short periods. This paper describes the construction and performance of an hydraulic weighing bysineter that has been used successfully at Samaru since 1968. Note de contenu : A critical factor affecting crop production in the savana zone of west Africa is the availability of water to crops. To estimate the amount of water available for crops it is necessary to know the amount of supply by rainfall or irrigation, the amount used in evapotranspiration can be estimated by measuring changes in soil moisture by direct sampling, with tensiometers or a neutron probe or by calculation from meteorological data using formulae such as that of Penman (1948) or thornthwaite (1954). Penman's method only estimates the evaporation from a free water surface and Thornthwaite's formula is not very accusate for short periods. This paper describes the construction and performance of an hydraulic weighing bysineter that has been used successfully at Samaru since 1968.

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Samaru Miscellaneous Paper, 48. Effect of some climatic factors on the fluctuation of population of Antigastra, catalaunabis Dupon. (Lepidoptera Pyralidae), a pest of Sesamum Indicum L/ / Chadha, S. S.

Public ISBD Titre de série : Samaru Miscellaneous Paper, 48 Titre : Effect of some climatic factors on the fluctuation of population of Antigastra, catalaunabis Dupon. (Lepidoptera Pyralidae), a pest of Sesamum Indicum L/ Type de document : texte imprimé Auteurs : Chadha, S. S. Mention d'édition : Institute for Agriculture Research, Samaru Editeur : Institute for Agriculture Research, Samaru Année de publication : 1974 ISBN/ISSN/EAN : CI-05716 Note générale : This paper gives study of effects of some climatic factors like light intensity, sunshine duration, rainfall, température, humidity and radiation on the incidence of Antigastra in sesame. It as been observed that the pest incidence is higher in dry sunny weather than in wet weather... Langues : Anglais (eng) Mots-clés : Sésame  Agriculture  Climatologie  Expérimentation  Antigastra catalaunalis Index. décimale : 551.6 Climatologie et temps Résumé : This paper gives study of effects of some climatic factors like light intensity, sunshine duration, rainfall, température, humidity and radiation on the incidence of Antigastra in sesame. It as been observed that the pest incidence is higher in dry sunny weather than in wet weather... Note de contenu : This paper gives study of effects of some climatic factors like light intensity, sunshine duration, rainfall, température, humidity and radiation on the incidence of Antigastra in sesame. It as been observed that the pest incidence is higher in dry sunny weather than in wet weather... Samaru Miscellaneous Paper, 48. Effect of some climatic factors on the fluctuation of population of Antigastra, catalaunabis Dupon. (Lepidoptera Pyralidae), a pest of Sesamum Indicum L/ [texte imprimé] / Chadha, S. S.  . -  Institute for Agriculture Research, Samaru . - Institute for Agriculture Research, Samaru, 1974. ISSN : CI-05716 This paper gives study of effects of some climatic factors like light intensity, sunshine duration, rainfall, température, humidity and radiation on the incidence of Antigastra in sesame. It as been observed that the pest incidence is higher in dry sunny weather than in wet weather... Langues : Anglais (eng) Mots-clés : Sésame  Agriculture  Climatologie  Expérimentation  Antigastra catalaunalis Index. décimale : 551.6 Climatologie et temps Résumé : This paper gives study of effects of some climatic factors like light intensity, sunshine duration, rainfall, température, humidity and radiation on the incidence of Antigastra in sesame. It as been observed that the pest incidence is higher in dry sunny weather than in wet weather... Note de contenu : This paper gives study of effects of some climatic factors like light intensity, sunshine duration, rainfall, température, humidity and radiation on the incidence of Antigastra in sesame. It as been observed that the pest incidence is higher in dry sunny weather than in wet weather...

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Samaru Miscellaneous Paper. An analysis of data on Wadara cattle at Dalori and the Bornu raneh at Maiduguri north eastern state Nigeria / Wheat, J. D.

Public ISBD Titre de série : Samaru Miscellaneous Paper Titre : An analysis of data on Wadara cattle at Dalori and the Bornu raneh at Maiduguri north eastern state Nigeria Type de document : texte imprimé Auteurs : Wheat, J. D. Mention d'édition : Institute for Agricultural Research Editeur : Institute for Agricultural Research Année de publication : 1975 ISBN/ISSN/EAN : CI-05709 Note générale : the objectives of this study were to determine the relative influence of breed of sire sex, and month of birth on weights at different agesfor Wadara cattle at the dairy and beef center. Calving and generation intervals were also determined. Langues : Anglais (eng) Mots-clés : Production animale  Lait  Elevage  Wadora Index. décimale : 636 Elevage : production, entretien, dressage : classer ici les ouvrages sur les animaux domestiques Résumé : the objectives of this study were to determine the relative influence of breed of sire sex, and month of birth on weights at different agesfor Wadara cattle at the dairy and beef center. Calving and generation intervals were also determined. Note de contenu : the objectives of this study were to determine the relative influence of breed of sire sex, and month of birth on weights at different agesfor Wadara cattle at the dairy and beef center. Calving and generation intervals were also determined. Samaru Miscellaneous Paper. An analysis of data on Wadara cattle at Dalori and the Bornu raneh at Maiduguri north eastern state Nigeria [texte imprimé] / Wheat, J. D.  . -  Institute for Agricultural Research . - Institute for Agricultural Research, 1975. ISSN : CI-05709 the objectives of this study were to determine the relative influence of breed of sire sex, and month of birth on weights at different agesfor Wadara cattle at the dairy and beef center. Calving and generation intervals were also determined. Langues : Anglais (eng) Mots-clés : Production animale  Lait  Elevage  Wadora Index. décimale : 636 Elevage : production, entretien, dressage : classer ici les ouvrages sur les animaux domestiques Résumé : the objectives of this study were to determine the relative influence of breed of sire sex, and month of birth on weights at different agesfor Wadara cattle at the dairy and beef center. Calving and generation intervals were also determined. Note de contenu : the objectives of this study were to determine the relative influence of breed of sire sex, and month of birth on weights at different agesfor Wadara cattle at the dairy and beef center. Calving and generation intervals were also determined.

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