Hemp (Cannabis sativa L. ssp. sativa) has a long history of domestication due to its versatile use. Recently, different sectors in the economy are investigating hemp cultivation increase agronomic production and limit delta-9-tetrahydrocannabinol (THC). Despite rapid growth literature recent years, it is still uncertain whether knowledge gained from higher latitude regions applicable low tropic...

Abstracts of oral presentations appear in chronological order, followed by abstracts of poster presentations in alphabetical order. All abstracts were edited for consistency of style, spelling, and grammar according to the American Society of Agronomy style guidelines. In some cases, abstracts were also edited for to fit the two-page limit.s of oral presentations appear in chronological order, ...

From the Department of Botany and Plant Sciences, University of California, Riverside. Dr. Gepts is now at the Department of Agronomy and Range Science, University of California, Davis. This work was supported by NSF grant BSR-8500206. The authors thank Wayne Hanna for providing seed samples and for assistance in complying with quarantine regulations. They also thank J. Dujardin, A. Marchais, a...

Department of Veterinary Ecology and Environmental Protection, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Palackeho 1-3, CZ-612 42 Brno, Czech Republic Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno, Czech Republic Department of Animal Nutrition and F...

The US dairy industry has realized tremendous improvements in efficiencies and milk production since the 1940s. During this time, farm and total cow numbers have decreased and average herd size has increased. This intensification, combined with the shift to a largely urban public, has resulted in increased scrutiny of the dairy industry by social and environmental movements and increased concer...

The Intergovernmental Panel on Climate Change and other international agencies have concluded that global crop production is at risk due to climate change, population growth, and changing food preferences. Society expects that the agricultural sciences will innovate solutions to these problems and provide food security for the foreseeable future. My thesis is that an integrated research plan me...

GPS guidance of farm machinery has been increasingly adopted by farmers because of the perceived gains in efficiency that it provides. In the southeastern USA one of the reasons farmers adopt GPS guidance, and specifically automated steering (auto-steer), is that it can theoretically result in large yield gains when used to plant and invert peanuts—one of the region’s most important crops. The ...

Manganese (Mn) is a mineral element essential for plant growth and development. In agronomy reality, Mn deficiency or overload in crops disturbs metal homeostasis, photosynthesis, many other biological processes. Mining genetic resources linking acquisition homeostasis vitally important to help understand adaptation stress breeding genetically improved sustainable agriculture. Metallic chaperon...

Potassium (K) fertilizer management is beneficial for improving growth, yield and yield components of field crops under moisture stress condition in semiarid climates. Field experiments were conducted to study the response of maize (Zea mays L., cv. Azam) to foliar and soil applied K during summer 2013 and 2014. The experiments were carried out at the Agronomy Research Farm of The University of...

Fibre hemp may yield up to 25 t above ground dry matter per hectare (20 t stem dry matter ha) which may contain as much as 12 t ha cellulose, depending on environmental conditions and agronomy. Its performance is affected by the onset of flowering and seed development. Effects of cultivar and management on yield and quality were tested at three contrasting sites in Italy, the Netherlands and th...