5 research outputs found
Limiting nutrients for bean production on contrasting soil types of Lake Victoria Crescent of Uganda
Common bean (Phaseolus vulgaris L.) is one of the most important grain legumes in East Africa, but its yield has remained below the genetic potential. Declining soil fertility is among the primary constraints to bean production in most East African bean producing regions. Often existing recommendations are generic and inept to guide farm level decision making on nutrient replenishment. A greenhouse nutrient omission study was conducted to determine the limiting nutrients in three soils of Masaka District, commonly cropped to beans: “Liddugavu” a Phaeozem, “Limyufumyufu” a Cambisol and “Luyinjayinga” an Umbrisol soil. Nine treatments; (i) complete nutrient treatment, (ii) N omitted, (iii) P omitted, (iv) K omitted, (v) Mg omitted, (vi) S omitted, (vii) Ca omitted, (viii) Micronutrients omitted and (ix) control without nutrients. Each treatment was randomly assigned to the three soils and replicated three times using a completely randomised design. Nitrogen, phosphorus and potassium were limiting nutrients for bean production in Umbrisol (Luyinjayinja) while in Cambisol (‘Limyufumyufu), common bean production was most limited by soil acidity. The performance varied with soil types, with beans grown on the Phaeozem registering greater leaf number and growth, confirming both scientist’s and local farmer’s knowledge that this soil has greater potential than the other two soils
Limiting nutrients for bean production on contrasting soil types of Lake Victoria Crescent of Uganda
Common bean (Phaseolus vulgaris L.) is one of the most important grain
legumes in East Africa, but its yield has remained below the genetic
potential. Declining soil fertility is among the primary constraints to
bean production in most East African bean producing regions. Often
existing recommendations are generic and inept to guide farm level
decision making on nutrient replenishment. A greenhouse nutrient
omission study was conducted to determine the limiting nutrients in
three soils of Masaka District, commonly cropped to beans:
\u201cLiddugavu\u201d a Phaeozem, \u201cLimyufumyufu\u201d a
Cambisol and \u201cLuyinjayinga\u201d an Umbrisol soil. Nine
treatments; (i) complete nutrient treatment, (ii) N omitted, (iii) P
omitted, (iv) K omitted, (v) Mg omitted, (vi) S omitted, (vii) Ca
omitted, (viii) Micronutrients omitted and (ix) control without
nutrients. Each treatment was randomly assigned to the three soils and
replicated three times using a completely randomised design. Nitrogen,
phosphorus and potassium were limiting nutrients for bean production in
Umbrisol (Luyinjayinja) while in Cambisol (\u2018Limyufumyufu), common
bean production was most limited by soil acidity. The performance
varied with soil types, with beans grown on the Phaeozem registering
greater leaf number and growth, confirming both scientist\u2019s and
local farmer\u2019s knowledge that this soil has greater potential
than the other two soils.Le haricot commun (Phaseolus vulgaris L.) est un des l\ue9gumes
\ue0 grains les plus importants en Afrique de l\u2019Est, mais son
rendement reste toujours en dessous de son potentiel
g\ue9n\ue9tique. La baisse de la fertilit\ue9 du sol est parmi
les contraintes primaires \ue0 la production du haricot dans la
plupart des r\ue9gions productrices de l\u2019Afrique de
l\u2019Est. Le plus souvent, les recommandations sont
g\ue9n\ue9riques et inad\ue9quates pour guider la prise de
d\ue9cision au niveau champ sur le r\ue9approvisionnement en
nutriment. Une \ue9tude sous serre sur l\u2019omission de nutriment
a \ue9t\ue9 conduite pour d\ue9terminer les nutriments limitants
dans les trois sols du district de Masaka, commun\ue9ment
utilis\ue9s pour produire du haricot\ua0: \u201cLiddugavu\u201d
un sol du Phaeozem, \u201cLimyufumyufu\u201d un sol du Cambisol et
\u201cLuyinjayinga\u201d un sol du Umbrisol. Neuf traitements, (i)
traitement complet de nutriments, (ii) N omis, (iii) P omis, (iv) K
omis, (v) Mg omis, (iv) S omis, (vii) Ca omis, (viii) micronutriments
omis et (ix) control sans nutriments. Chacun des traitements a
\ue9t\ue9 al\ue9atoirement distribu\ue9 aux trois types de sols
et r\ue9pliqu\ue9 trois fois dans un dispositif compl\ue8tement
al\ue9atoire. Azote, phosphore, et potassium ont \ue9t\ue9 les
nutriments limitants pour la production du haricot dans Umbrisol
(Luyinjayinja) tandis que dans Cambisol (\u2018Limyufumyufu), la
production du haricoct commun a \ue9t\ue9 limit\ue9e par
l\u2019acidit\ue9 du sol. Les performances varient en fonction des
types de sols, avec le haricot produit sur le Phaeozem comptant plus de
feuilles et de croissance, confirmant \ue0 la fois les connaissances
des scientifiques et des populations locales qui stipulent que le sol a
un potentiel plus \ue9lev\ue9 que les deux autres sols
Limiting nutrients for bean production on contrasting soil types of Lake Victoria Crescent of Uganda
Common bean (Phaseolus vulgaris L.) is one of the most important grain legumes in East Africa, but its yield has remained below the genetic potential. Declining soil fertility is among the primary constraints to bean production in most East African bean producing regions. Often existing recommendations are generic and inept to guide farm level decision making on nutrient replenishment. A greenhouse nutrient omission study was conducted to determine the limiting nutrients in three soils of Masaka District, commonly cropped to beans: “Liddugavu” a Phaeozem, “Limyufumyufu” a Cambisol and “Luyinjayinga” an Umbrisol soil. Nine treatments; (i) complete nutrient treatment, (ii) N omitted, (iii) P omitted, (iv) K omitted, (v) Mg omitted, (vi) S omitted, (vii) Ca omitted, (viii) Micronutrients omitted and (ix) control without nutrients. Each treatment was randomly assigned to the three soils and replicated three times using a completely randomised design. Nitrogen, phosphorus and potassium were limiting nutrients for bean production in Umbrisol (Luyinjayinja) while in Cambisol (‘Limyufumyufu), common bean production was most limited by soil acidity. The performance varied with soil types, with beans grown on the Phaeozem registering greater leaf number and growth, confirming both scientist’s and local farmer’s knowledge that this soil has greater potential than the other two soils.This article is published as Kyomuhendo, P., M.M. Tenywa, O. Semalulu, A. Lenssen, R. Yost, S. Kyebegola, L. Goettsch, R. Mazur. 2018. Limiting nutrients for bean production on three contrasting soils. African Crop Science Journal. 26:543-554. doi: 10.4314/acsj.v26i4.8.</p