%0 Journal Article
%T Estimativa de danos de granizo no limbo foliar do morangueiro sob prote  o do agrot那xtil Estimation of hailstone damage to the leaves of strawberries under a textile protection
%A Rosana Fernandes Otto
%A Silvana Ohse
%A F芍bio Corso
%J IDESIA
%D 2012
%I Universidad de Tarapac芍
%X Na produ  o de hortali as, uma alternativa de prote  o contra danos causados por chuva de granizo pode ser a cobertura das plantas com agrot那xtil. Em Ponta Grossa-PR foi conduzido um experimento com o objetivo de avaliar o n赤vel de dano causado por granizo em morangueiro cultivado sob agrot那xtil (PP) e em ambiente natural (AN). O delineamento experimental utilizado foi de blocos casualizados com tratamentos arranjados em parcelas subdivididas, com quatro repeti  es. O fator principal foi sistema de cultivo (PP x AN) e o secund芍rio foi cultivares de morangueiro (Ventana, Cami o Real e Camarosa). O agrot那xtil foi colocado sob as plantas imediatamente ap車s o transplante e mantido durante todo o ciclo. Foram avaliados os danos causados por granizo no limbo foliar por meio de notas transformadas segundo a equa  o de Townsend-Heuberger. A intera  o entre o sistema de cultivo e as cultivares n o foi significativa, assim como n o houve diferen as para danos de granizo entre as cultivares avaliadas. Entretanto, as plantas protegidas com agrot那xtil apresentaram, em m谷dia, 13,7% de danos no limbo foliar contra 88,1% de danos nas plantas cultivadas em AN. O agrot那xtil 谷 um material que apresenta alto 赤ndice estimado de prote  o contra danos de granizo sobre a 芍rea foliar do morangueiro, devendo ser utilizado como prote  o da planta, quando o sistema meteorol車gico alertar sobre o risco de chuvas dessa natureza. For horticultural production, plant protection by nonwoven material may be an alternative for protection against the damage caused by hailstones. An experiment was conducted in Ponta Grossa - PR to evaluate the damage level caused by hailstones to strawberry plants growing under nonwoven fabric (PP) and in natural conditions (AN). The experimental design was in randomized blocks, with the treatments arranged in a split plot with four repetitions. The major factor was the cultivation system (PP x AN) and the secondary factor was the strawberry cultivars Ventana, Cami o Real and Camarosa. Nonwoven fabric was installed over the plants immediately after transplant and was maintained during the entire growth cycle. The damage caused by hailstones on the leaves was evaluated using measurements transformed according to the equation of Townsend-Heeuberger. The interaction between the cultivation system and the strawberry cultivars was not significant, as there were no differences among the cultivars evaluated for hailstone damage. However, the plants protected by nonwoven fabric (PP) presented damage in13.7% of the leaf area against 88.1% damage in cultivated plants
%K Fragaria x ananassa Duch
%K n赤vel de dano
%K cultivo protegido
%K polipropileno
%K Fragaria x ananassa Duch
%K damage level
%K protected cultivation
%K polypropylene
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292012000200005