INFLUENCE OF THE MANAGEMENT SYSTEM OF SOIL AND PLANT CULTURE ON EARTHWORMS (OLIGOCHAETA: LUMBRICIDAE) IN CONDITIONS OF BANAT PLAIN PUBLISHEDMădălina IORDACHE, I. GAICA, I. BORZA
In this paper there are exposed the results of the researches aiming to establish the effect of some different systems of soil tillage on earthworms, in this case considering the classic system and the no-till system, in maize (Zea mays L.) and soybean (Glycine hispida (Mnch)) cultures. The research has as goal to study the earthworms under aspect of numerical and biomass dynamics in field experiments, in a cambic chernozem soil. Within the same research were made physical-chemical analysis of soil for a series of indices, like pH, total nitrogen, phosphorous and potassium, in order to study their influence on earthworms as numerical abundance and weight. The registered data showed that earthworm number (individuals/m 2 ) identified in the experimental variants cultivated in classic system is lower than earthworm number found in the no-till system, and the earthworm biomass (g/m 2 ) generally had the same tendency. It was found that earthworm number was higher in the soybean culture than in the maize culture for both cultivation systems. The research methodology that was used respects the actual legislation and protocols in force. The statistic connections between the researched factors were realized by statistical methods, consisting of dispersion analysis ANOVA (Analysis of Variance). For statistical calculation, the SPSS software (Statistical Package for the Social Sciences) was used. This type of research was required because the Romanian scientific research in the field of soil fertility in the last decades was predominantly orientated in direction of usage of chemical fertilizers, irrigations, pesticides and other agricultural technologies as methods for fast increasing of the crops. Generally, the tendency was the same in the worldwide plain. It can be concluded that, in great measure, the scientific research from agriculture was not ready to offer solutions in order to accede from the concept of intensive agriculture to the ecological sustainable concept.
earthworms, classic tillage, no-till system, maize, soybean, soil characteristics