The present qualified work of investigation "effect of the applicatíon of organic matter (pollaza) in the cultivation of Chinese cabbage (Brassica rapa Lour.) Kiboho range 90 f-1 under the ecological conditions of the District of Lamas"; had specific objectives to assess the effects of the applicatíon of three doses of organic matter (pollaza) in the cultivation of Chinese cabbage (Brassica rapa Lour.) Variety Kiboho 90 F-1 under the ecological conditions of the District of Lamas, perform economic analysis each treatment to determine the best dose. lt was established in Fundo Horticultura! "The Pacific", in the district and provínce of Lamas, statístical block design was used completely randomized (DBCA) with four blocks, four treatments and a total of 16 experimental units, treatments doses were studied Pollaza: to =; witness T1 = 1 O t.ha-1 T2 = 20; t.ha-1 T3 = 30 t.ha-1 . lncreasi...