Effect of nitrogen and plant population on growth and yield of bush beans (Phaseolus vulgaris) var. Cherokee Wax [Sri Lanka]

agricultural chemicals alimentos augmentation de rendement aumento del rendimiento biological development breeding breeding aims crecimiento croissance crops cultivation cultivo cultivos cultivos de grano dicotiledoneas dicotyledons economic plants engrais espacement espaciamiento fertilizantes nitrogenados fertilizers fisiologia fonction physiologique foods grain crops grain legumes growth haricot commun hortalizas (plantas) hortalizas leguminosas kidney beans legumes leguminosae leguminosas leguminosas de grano methode methods nitrogen fertilizers objetivo de mejoramiento papilionoideae phaseolus phaseolus vulgaris physiological functions physiologie physiology plantas plante plante de culture plants pratique culturale produit agrochimique produit alimentaire rosales spacing vegetable crops vegetable legumes