Title (Spanish)

Distanciamiento entre surcos y plantas en dos ecotipos de Kañawa (Chenopodium pallidicaule Aellen) en el altiplano norte

Abstract

The study "Distance between rows and plants in two ecotypes of canihua (Chenopodium pallidicaule Aellen) in the northern Altiplano" was conducted during the agricultural period of 1999-2000 in the community of Achaca, Tiahuanaco canton, Ingavi province, department of La Paz, Bolivia. It was at 3854 meters above sea level, 16°35' South latitude by 68°41' West longitude. Precipitation was 474.6 mm and the soil was a loose sandy texture. The genetic material was composed of the ecotypes of yellow Lasta, red Lasta, yellow Saihua, and red Saihua, from the Belén Experimental Station, part of the Faculty of Agronomy, San Andrés Higher University. With the objective to evaluate the effect of distance between rows and between plants on the agronomic behavior of two ecotypes of Canihua in the northern Altiplano, planting took place on December 20, 1999, in rows 20, 40, and 60 cm apart, at a density of 4 kg/ha, all of it under a random block design with plots sub-subdivided. The principal plot set the distance between rows, the subplot set the distance between plants, and the sub-subplot the different ecotypes. Thirty-five days after planting the plants were thinned by hand, and with the use of a cord they were located at pre-established distances of 10, 20, and 30 cm between plants. The effects of the different distances on the ecotypes gave the following results and principal conclusions: The height and stem width of canihua was directly proportional to the different distances between plants and rows, and inversely proportional to the number of plants per area. The maximum values reached for height (21.4 cm) and diameter (2.5mm) occurred with 60 cm between rows and 101,852 plants per hectare. Also, the yellow Saihua ecotype was taller than the rest of the ecotypes at 19.1 cm. As for diameter, the ecotypes presented statistically similar behavior.

Abstract (Spanish)

"Distanciamiento entre surcos y plantas en dos ecotipos de Kañawa (Chenopodium pallidicaule Aellen) en el Altiplano Norte", fue conducido durante el periodo agrícola 1999 - 2000 en la Comunidad Achaca, Cantón Tiahuanaco, Provincia Ingavi del departamento de La Paz, Bolivia. El material genético estuvo formado por los ecotipos: Lasta amarilla, Lasta roja, Saihua amarilla y Saihua roja, provenientes de la Estación Experimental de Belén, dependiente de la Facultad de Agronomía, Universidad Mayor de San Andrés. Con el objetivo de evaluar el efecto del distanciamiento entre surcos y entre plantas en el comportamiento agronómico de dos ecotipos de kañawa en el Altiplano Norte, la siembra se efectuó el 20 de diciembre de 1999 en surcos distanciados a 20, 40 y 60 cm, con una densidad de 4 kg/ha, todo ello bajo el diseño bloques al azar con arreglo en parcelas sub - sub divididas, donde en la parcela principal se localizó la distancia entre surcos, en la sub parcela se ubicó la distancia entre plantas y en la sub - sub parcela los diferentes ecotipos. Al cabo de 35 días de la siembra se procedió al raleo de plantas en forma manual y con la ayuda de cordeles ubicados a distancias preestablecidas como tratamientos de 10, 20, 30 cm entre plantas.

Rights

http://lib.byu.edu/about/copyright/

Date Submitted

2002

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/etdm858

First Advisor

Alejandro Bonifacio Flores

Second Advisor

Félix Mamani Reynoso

Third Advisor

Félix Rojas Ponce

Fourth Advisor

Orlando EspinozaCanedo

Fifth Advisor

René Calatayud Valdez

Sixth Advisor

Renée Terán Cespedes

Keywords

Cañahua, planting, Bolivia, Ingavi

Language

Spanish

Additional Information

Thesis (Ing. Agronómica)--Universidad Mayor de San Andrés, Facultad de Agronomía, Carrera de Ingeniería Agronómica, 2002

Coverage

Altiplano, La Paz (Bolivia)

Included in

Agriculture Commons

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