Possibilities of restraining tree size in apple plantations [growth inhibitors, shoot pruning, thinning, alpha-naphtil-acid]

aclareo agricultural chemicals apples arbre beverage crops crops cultivation cultivo cultivos economic plants farming systems forestry operations fruit crops frutales frutas de clima templado growth inhibitors inhibidores del crecimiento manzana methode methods operaciones forestales ornamental plants ornamental trees plant growth substances plantaciones plantas plantas ornamentales plantas para bebidas plantations plante plante de culture plante ornementale plants poda pomme pratique culturale produit agrochimique pruning retardateur de croissance taille temperate fruits thinning trees