Nuts grown in areas of 6000 heat units are more likely to have higher percent kernels than at 5000 heat units. Shell thickness is less in the areas receiving less heat units such as the ElPaso Valley and the high plains of Texas. Our research using pecans from Zavala, Hidalgo, Burleson, Brown, and Pecos Counties in Texas as well as from Oklahoma, Kansas, and California consistently show a positive correlation between heat units and Oleic acid. There is negative correlation between heat units and Linoelic acid. The high heat unit pecans have lower nut size than the lower heat unit pecans.
Pecan roots are very tough and can withstand rough treatment.
They remain hydrated for long periods of time without water. Pecan roots must be protected at all cost during transplanting or they will never sprout out and begin growth . Fill in the blanks. The two primary things that E. E. Risien learned from his first nursery of 400 seedling pecan trees were that pecans do not come up true to the seed. Their heterozygosity was a surprise because many agronomic and vegetable crops did produce crops that were true to the seed that were planted. and pecan cultivars that did very well in the west did not necessarily perform well in the east.