Christophe LUMPUNGU KABAMBA / Emmanuel TSHIBANGU BAKABABENESHA
Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
The soil used for our investigations is an extremely acidic ferralsol, to which we applied organic matter based on Tithonia diversifolia, proposed as a possible solution for restoring the fertility of this type of soil. The general aim was to evaluate its impact on soybean crops sown in pots on two soils, from 0-20 cm and 20-40 cm in a bifactorial experimental set-up. Three doses, equivalent to 0 kg (D0), 3 kg (D1) and 6 kg MO.m-2 (D2) were tested. The 3 kg MO.m-2 treatment was the best in all cases, particularly in terms of yield, which was equivalent to 3.72 Mg.ha-1 on the surface soil and 3.48 Mg.ha-1 on the deep soil. The 0 kg MO.m-2 treatment, which had borne only a few nodules (8), had only given a yield of 0.486 Mg.ha-1. Proof of Rhizobium inactivity in this type of soil. With the 6 kg MO.m-2 dose, a drop in yield was observed (1.642 Mg.ha-1 on average), probably due to excess nitrogen. Nevertheless, the results obtained were comparable for the two soil levels studied (0-20cm and 20-40cm).
