Indicadores fisiológicos e produtividade de morangueiros cultivados sob mulchings e arranjos espaciais em cultivo a campo

Abstract

The use of cover crops and planting density is directly related to productivity of strawberry plants grown in the field. Given to above, the aim of the present work was to evaluate the productive characteristics and levels of photosynthetic pigments of two cultivars of strawberry on types of mulchings, and numbers of rows per bed planting in the open system The experiments were carried out between May and December/2012 at the Experimental Farm "Prof. Dr. Antônio Carlos dos Santos Pessoa belonging to Unioeste, Campus of Marechal Cândido Rondon, PR. The first experiment was conducted in a randomized block design, factorial 2x4 (Two cultivars, being 'Camarosa' and 'Camino Real' x 4 types of mulchings, being black low-density polyethylene, silver low-density polyethylene, non woven tissue and no mulching) containing three replications. The second experiment was conducted in randomized complete blocks, 2x4 factorial (two cultivars being Camarosa and 'Camino Real' x 4 arrangements of plants per plot, with 1, 2, 3, 4 rows per plot), containing four replication. It was evaluated as pigment, the chlorophylls a and b, chlorophyll a+b and a/b ratio, average number of fruits plant-1, productivity (ton ha-1) or average mass plant-1, average fruit weight-1, soluble solids (Brix), total acidity, pH and soluble solids/total acidity. The mulchings of silver low-density polyethylene and non woven tissue presented lower productivity, not being recommended for the cultivation of strawberry cultivars Camarosa and Camino Real. From among the mulchings used in the present work, black low-density polyethylene was what gave better results, being recommended its use for cvs. Camarosa and 'Camino Real'. The spatial arrangement of plants with two and three rows were presented better results in productivity in the cultivation of the strawberry field