Direct undersowing of degraded stands with annual and perennial legumes in the Northern Bulgaria

Galina Naydenova,Viliana Vasileva

doi:10.5937/ratpov53-10119

Abstract

The possibility of annual and perennial legume crops to be used for undersowing of degraded pasture stands and alfalfa seed production stands was studied in the conditions of the Northern Bulgaria. The direct undersowing of degraded pasture stands was done after harvest with these legumes: birdsfoot trefoil (Lotus corniculatus L.), red clover (Trifoliumpratense L.), black medick (Medicago lupulina L.), arrowleaf clover (Trifolium vesiculosum Savi), and common vetch (Vicia sativa L.). The undersowing of degraded seed production stands of alfalfa was done in autumn of the fourth year of using with subterranean clover (Tr. subterraneum ssp. brachycalicinum cv. Antas). Red clover showed the best results in terms of suitability for the direct undersowing of degraded pasture stands. Subterranean clover could be used for the direct undersowing of the degraded alfalfa seed production stands due to its self-seeding ability.

Highlights

The objective of this work was to assess the results of direct undersowing of degraded pasture stands and degraded alfalfa seed production stands with annual and perennial legume crops in the conditions of Northern Bulgaria
Experimental work was carried out on two locations in Bulgaria as follows: 1. Direct undersowing of degraded pasture stands with adapted genotypes annual and perennial legumes
Direct undersowing was done with the following types of legumes: birdsfoot trefoil (Lotus corniculatus L.), a local pasture ecotype; red clover (Trifolium pratense L.), cv

Summary

Introduction

Arrowleaf clover is an annual legume crops with winter type of development. Red clover (Trifolium pratense L.) is defined as a legume with the greatest potential to meet the objectives of the direct undersowing, due to the rapid initial growth of seedlings in the conditions of competition, tolerance of shade and good compatibility with the most common types of forage grasses (Riday, 2008; Mihovski, 2009; Naydenova et al, 2013).

Objectives

Results

Conclusion