Effect of mulch, farmyard manure and fertilizer on the initial growth of fodder tree [Nepal]

abonos agricultural chemicals aliment pour animaux alimentos para animales amendement du sol asia asie cobertura vegetal cultivation cultivo engrais engrais organique enmiendas del suelo essai farmyard manure feeds fertilizers methode methods mulching nepal paillage pratique culturale produit agrochimique pruebas recherche research soil amendments trials