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Alvaro Garcia

SDSU Extension Agriculture and Natural Resources Program Director & Professor


Berg Agricultural Hall 132
Agricultural Programs-Box 2207D
University Station
Brookings, SD 57007

Overall leadership of the Agriculture and Natural Resources program for the college of Agriculture and Biological Sciences.

Also by Alvaro Garcia

A spotted, black-and-white dairy cow with yellow callouts explaining symptoms of heat stress, including: rumen acidosis, reduced milk production, lameness, less intake & less chewing plus bicarbonate losses reduces human pH. Panting increases, respiration rate, loss of carbon dioxide (metabolic alkalosis) loss of saliva's bicarbonate (drooling), increased water losses.

Dealing With Heat Stress in Dairy Cows

Alleviating heat stress is critical to milk production. Heat stress from high environmental temperatures can be compounded by mistakes in managing and feeding cows. Water is your first concern during periods of high temperatures.

Lush, green hay growing in a ditch alongside an oil road.

Ditch Hay: Harvesting, Quality, and Feeding

Using ditch hay to feed cattle is a common practice across the U.S. It provides livestock producers with a source of readily available forage, which can be very useful, particularly during feed shortages.

A graph indicating rising corn yields and generally steady corn acreage from 1926 to 2016/2017.

Leveling the Playing Field for U.S. Corn

Corn grain has been for a long time the world standard when it comes to energy feeds for livestock. It has been traditionally a quite homogeneous, energy-dense feed, only surpassed from this perspective by oils and fats or by other feedstuffs also rich in lipids.