Record ID No. |
2154 |
Author(s) |
Gonzalez P. J., Plana R., R Rivera, F Fernandez, J Arbola , 2008 |
Affiliation |
Inst Nacl Ciencias Agr, Apartado Postal 24, Havana, CUBA |
Title |
Effects of arbuscular mycorrhizal fungi inoculation on pastures from Brachiaria genus, sown on mulled brown soil |
Source. Vol.(no):Page |
Cuban Journal of Agricultural Science. 42(1): 99-103p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Country |
Cuba, North America |
Abstracts |
The effect of the inoculation of arbuscular mycorrhizal fungi (AMF) strains Glomus hoi-like, G mosseae and G intraradices on Brachiaria decumbens cv. Basilisk, A brizantha vc. Marandu and B. Hibrido cv. Mulato CIAT 36061 sown on calcic mulled brown soil was assessed in a random block design with factorial arrangement and four repetitions. The pastures were sown in separate furrows, at 70 cm and at drill sowing, with dosages of I kg of pure germinal seed ha(-1) (6-7 kg of total seed ha(-1)). Certified inoculants
containing 25 spores/g of substrate, produced in the Biofertilizers and Plant Nutrition Department from the
Institute of Agricultural Sciences (INCA) were used for applying the AMF strains. The inoculants were applied
in the sowing time by the method of seed recovering. No interaction between the AMF strains and the pastures
species was found for the indicators studied. In the rainy and dry season, G intraradices had the highest (P < 0.05) DM yields' of the pastures (10.92 and 3.10 t ha(-1)) and efficiency indexes (EI) (23 and 21%). In both seasons, this strain reached high percentages of mycorrhizal colonization (60.58 and 22.45%) and visual density (4.36 and 1.63%) and the highest (P < 0.05) N contents in the biomass (1.56 and 1.58%). It also had higher participation in pastures nutrition, with indexes that oscillated between 61 and 54% for N and between 29 and
25% for P and K, respectively. It is concluded that the AMF strain was the most effective for improving the nutritional state and yields of the species assessed. |