Juan G. R. Methodology for studying the distribution and behaviour of the citrus root system.
Provincial Department of Irrigation Agriculture. Matanzas, Cuba, 1970.
Developed a methodology for studying the distribution and behaviour of the citrus root system under field conditions. It was recommended a design in young plantations and other for plantations in production. Should be examined at least 3 plants per treatment.
In the case of young plantations of 5 years of age is recommended to consider a square area of 16 m2, which is divided into 4 triangular sections of 4 m2 each, identified by the letters N, S, E and O respectively, their every triangle is divided into 4 sections of 1 m2 each, called the number 1 closest to the tree and the number 4 is farthest from the tree.
The depth of study is 120 cm and soil samples with roots are taken every 10 cm. deep. The procedure is as follows:
1 – The samples containing roots and soil are placed in bags properly identified by means of cards of cardboard.
2 – Wash the roots and away from the earth.
3 – Eliminate impurities of other roots different than the roots of citrus.
4-Drying, retention and clustering of roots in bags marked with cards.
5-Classification of roots according to their physiological activity in three diameters: less than 1 mm, 1 to 3 mm and larger than 3 mm.
6 – Location of roots classified by their diameter and depth and put in weighed receptacles where they are dried to 105 degrees centigrade for 20 hours a day.
7 – Weighing the roots.
8 – The Roots is a deformable, so that when you study, it is necessary to take into consideration the plant and the environment that surrounds it, such as: agrotecnia, physical and chemical properties of soil, climate and so on.
9 – Finally, the results are processed statistically.
In the case of adult plants is recommended the same procedure, but it is necessary to increase the size of the study area based on the distance used for planting.