Productivity of Bulgarian Multifoliolate Alfalfa at Two Ecological Regions
D. PETKOVA1, Ch. YANCHEVA2 and N. DODUNCHEV2
1 Institute of Agriculture and Seed Science "Obraztsov Chiflik", BG-7007 Rouse, Bulgaria
2 Higher Institute of Agriculture, BG-4000 Plovdiv, Bulgaria
PETKOVA, D., Ch. YANCHEVA and N. DODUNCHEV, 1999. Productivity of Bulgarian multifoliolate alfalfa at two ecological regions. Bulg. J. Agric. Sci., 5: 871-876
Multifoliolate (MF) alfalfa varieties with four or more leaflets per leaf, instead of three, have been marked for greater nutritive value and intake potential than the standard trifoliolate (TF) varieties. The aim of this investigation was to compare the productive capacities of the Bulgarian MF and TF alfalfa genotypes, growing for forage, under different ecological conditions. In 1995 – 1998 two experiments in parallel were conducted at two locations – experimental fields of the Higher Institute of Agriculture, Plovdiv and "Obraztsov Chiflik", Rouse. The experimental materials included: two TF varieties – Nadezda 2 (standard) and Victoria: four MF genotypes – variety Mnogolistna 1, AX-93 (3d), AX-93 (5d) and AX-93 (3 + 5 + 7d).
The experiments were in a randomized block design with four replicates. There were determined herbage yield for each regrowth and for the whole growing season by cutting each plot in the beginning of flowering.
An analysis of variance (ANOVA) was conducted to determine effects and significant treatment interaction for each location.
Means separations was done using Multiple -range test at P + 5% level of significance.
Our results showed that MF alfalfa genotypes developed in Bulgaria, gave equivalent green mass yields to those of the wide-spread trifoliolate varieties, regardless of slightly variation on cuts and had higher yields that TF in years with more growing precipitation.
Key words: alfalfa, multifoliolate, genotype, yields
Abbreviations: TF (trifoliolate), MF (multifoliolate), ANOVA (analysis of variance)