Contribution of phosphorus and potassium from poultry manure application to potato and vegetables grown in an ultisol of the up country

Wijewardena, J.D.H.2020-04-072020-04-071999Annals of the Sri Lanka Department of Agriculture, 1:p.129-136https://dl-doa.nsf.gov.lk/handle/1/1912FERTILIZERSPhosphorusPotassiumPotatoPoultry manureVegetablesContribution of phosphorus and potassium from poultry manure application to potato and vegetables grown in an ultisol of the up countryArticle