New Cultivars and Farming Strategies by ProQuest

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Developing New Farming Techniques NPRL agronomist Wilson Faircloth and plant stress physiologist Diane Rowland (formerly with NPRL and now with Texas AgriLife Research) conducted field trials for 5 years in west Texas to determine the effects of deficit irrigation and, more recently, conservation tillage on peanut performance. The combination of conservation tillage and deficit irrigation promotes conservation of water during the early season, and if implemented over a large geographic area such as the Southern High Plains, it has potential to significantly affect late-season water issues by reducing the amount of water needed for peanut irrigation.

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									Preparings t e for the Future
  S y Peanuts m a t i                                   c s              &   C o l l e c t i o n s
New Cultivars and Farming Strategies


P
                           important crop,
         eanuts are an import                     Field screening of the                                              “Identifying drought re-
         contributing more than $4 billion     accessions was performed                                               sponses in the mini-core
         to the country’s econ
                             economy each      by New Mexico State                                                      collection can help us de-
                            growt
         year. But rapid growth in cities      University scientist                                                      termine potential genetic
                              leve
         along with water level declines       Naveen Puppala and a                                                      components involved in
 n                               S
in aquifers throughout the South have          team of Texas AgriLife                                                    abiotic stress tolerance,”
                                far
resulted in fewer acres for farming and        Research and Texas                                                        says Payton. “Our study
 ess
less water available for irrigatio To meet
                         irrigation.           Tech University sci-                                                    identifies potential targets
future food-supply demands, crop produc-       entists led by Mark Burow.                                           for breeding and genetic
tion will have to increase, but it must do     Photosynthetic measurements          PAXTON PAYTON (D1559-1)
                                                                                                                 engineering of abiotic stress
so under the constraints of less water and,    of the field-grown plants by Payton                          tolerance in peanut crop plants.”
most likely, less farm land.                   and Kottapalli helped narrow down the                  Perhaps most importantly, the pheno-
   Agricultural Research Service scientists    group to two accessions that are highly types Payton and Kottapalli identified in
with the Plant Stress and Germplasm            tolerant to heat and drought and two that the screening process were confirmed by
Development Research Unit in Lubbock,          are highly susceptible.                            field trials under stress-inducing condi-
Texas, and the National Peanut Research           This follows previous work by the tions. Puppala and Burow are using the
Laboratory (NPRL) in Dawson, Georgia,          AgriLife and Texas Tech scientists                            results of this and other screening
are working with cooperators to help pea-      and ARS scientists John Burke                                      experiments to make crosses
nut farmers maintain and improve their         and Gloria Burow, who                                                 to improve abiotic stress
production in a changing environment.          demonstrated heat and                                                    tolerance in peanut.
                                               drought tolerance in a                                                       Payton and the re-
Managing Abiotic Stresses                      smaller set of peanut                                                     searchers are also test-
   At the Lubbock laboratory, plant physi-     germplasm. They are                                                       ing peanut’s response to
ologist Paxton Payton and postdoctoral         now examining the in-                                            
								
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