Mississippi usually plants a little early, and this later planting should improve emergence and increase efficacy of herbicides, assuming the temperature increases.
Fertility timing is one production practice that is changing.
For the past several years, nitrogen fertility has been somewhat routine because only one variety was grown on most of the acreage. With the introduction of three new varieties, fertility requirements are changing. Proper rates and timings of plant food are essential for high rice yields and with Delta soils, nitrogen is the nutrient most lacking. Nitrogen requirements for rice depend on the cropping system and the variety being grown. During the development of the rice plant, you may use ammonium or nitrate forms of nitrogen.