Loss of production may be one concern cotton producers have on the Rolling Plains when considering switching to reduced- or no-tillage systems, said Dr. Paul DeLaune, Texas AgriLife Research environmental soil scientist in Vernon.
Not only will cotton growers not lose production with subsurface drip irrigation, their economics will improve, according to DeLaune's latest research article that will appear in the July-August issue of Agronomy Journal.
DeLaune's study on cotton production as affected by irrigation level and transitioning tillage systems was designed to identify water management strategies that conserve and protect water resources within semiarid environments.
"We found that tillage has no impact on yields, the net returns are greater and, because we can deficit irrigate, we can save energy and water," he said.
The three-year study included five irrigation regimes, from 0 percent to 133 percent of evapotranspiration replacement, and evaluated four tillage systems — conventional till, reduced till, no-till and no-till with a terminated cover crop, he said. Treatments were replicated three times in a randomized complete block design.
The results showed lint yields were not affected by tillage or the interaction of tillage and evapotranspiration replacement, DeLaune said. The greatest lint yields and net returns were achieved at 100 percent evapotranspiration replacement. Optimum lint yields and net returns were achieved at 104.5 percent evapotranspiration and 102 percent evapotranspiration, respectively.
However, he said the models showed that producers could irrigate at 83 percent evapotranspiration and maintain optimum yields. The net returns where significantly higher for no-till systems compared with conventional till because of reduced labor and inputs.
"We concluded the adoption of conservation tillage systems should not negatively affect lint yield or net returns in deficit-irrigated subsurface drip irrigation cotton systems within the Rolling Plains, particularly during the transition from intensively tilled systems to conservation tilled systems."
While only 16 percent of planted cotton is irrigated in the Rolling Plains, irrigation accounts for 41 percent of the harvested cotton, DeLaune said. In such environments, it is important to determine management practices that conserve or best use water resources.
Dr. Paul DeLaune | EurekAlert!
Energy crop production on conservation lands may not boost greenhouse gases
13.03.2017 | Penn State
How nature creates forest diversity
07.03.2017 | International Institute for Applied Systems Analysis (IIASA)
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
22.03.2017 | Materials Sciences
22.03.2017 | Physics and Astronomy
22.03.2017 | Materials Sciences