Influence of row covers and mulching interaction on leaf physiology, fruit yield and albinism incidence in ‘Sweet Charlie’ strawberry (Fragaria x ananassa Duch.)Ram Roshan Sharma, Rajbir Singh, Dinesh Singh and Ram Kishore GuptaFruits, 63 2 (2008) 103-110DOI: https://doi.org/10.1051/fruits:2007052