Resources

Cotton defoliation is a complex production decision with many chemical options to consider. Harvest aids are utilized to prepare the crop for machine harvest, and timely defoliation and harvest of cotton can reduce weathering losses (yield and quality) and decrease trash in the lint. A basic knowledge of crop development and maturity as well as an understanding of the physiological effects of harvest aids on cotton plants is necessary in making decisions concerning defoliation.

Calf health is a key variable for calf growth and performance. Producers should not expect to know all calf health issues, causes, and the most successful treatments. Instead, a producer's main goal should be to accurately identify and differentiate normal from abnormal in a calf's physical state and behavior. The topics discussed in this publications are intended to help producers notice key areas of observation while also helping to identify normal and abnormal health parameters in calves. This information can also be used to develop calf management protocols and treatment strategies.

Bull procurement decisions can greatly impact your future calf crops and herd genetics for many years. Selecting and buying a herd bull is the quickest way to make genetic improvement in your herd. The selection process must include looking for those traits that are economically important and highly heritable. Demand and buy bulls with total performance that will improve your herd. This publication discusses factors to consider when purchasing a new bull.

Annual ryegrass (Lolium multiflorum), also referred to as Italian ryegrass, is the most problematic winter annual weed in Georgia hayfields. Seed germinates from September to November when soil temperatures drop below 70 degrees F. Seedlings mature in the fall, overwinter in a vegetative state, and resume active growth in the spring. Annual ryegrass is a prolific seed producer that contributes to annual infestations. This publication summarizes the growth and identification of this weed. Cultural and chemical control options are also presented for tall fescue, bermudagrass, alfalfa, bahiagrass and other forage legumes grown for hay production.

Infectious Bovine Rhinotracheitis (IBR), commonly referred to as “Rednose,” is a disease resulting from bovine herpesvirus type 1 (BHV-1). The detriment of the disease, as well as the positive benefits vaccination can have on a reproductive program, needs to be on the forefront of a producer's herd health program.

Additional author: Mengmeng Gu, Professor, Colorado State University Department of Horticulture and Landscape Architecture. Is Biochar Good or Bad for Plant Growth? Mixing biochar into soilless substrates may have negative, zero, or positive effects on plant growth. Biochar made from green waste mixed with peat at 50% by volume has been shown to increase prayer plants' total biomass and leaf surface. Adding 10% by volume of sewage sludge biochar with peat-based substrates can increase lettuce biomass by 184%–270%. Mixing pruning-waste biochar with peat-based substrates at 50% or 75% by volume can also increase lettuce biomass. Mixing 20% or 35% (weight per weight) of coir biochar with 0.5% or 0.7% humic acid into a composted green-waste medium showed increased biomass of rattlesnake plants compared to those without biochar and humic acid amendments. Mixed hardwood biochar (50% by volume) and sugarcane bagasse biochar at 50% or 70% with a bark-based substrate increased basil plants’ average root diameter. Mixed hardwood biochar at 20%–80% by volume increased photosynthesis, shoot fresh weight, and shoot dry weight of chocolate mint, peppermint, Kentucky Colonel mint, spearmint, and orange mint plants. Also, pinewood biochar mixed with pine bark increased chrysanthemum shoot fresh and dry weights. Biochar may also have adverse effects on plant growth. For example, we tested one type of biochar with high salinity; plants grown in the biochar mixes wilted within 30 min. When plants do not have enough water to dissolve the extra salts, they die.