Date of Award

8-2024

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Plant and Environmental Science

Committee Chair/Advisor

Dr. Daniel Anco

Committee Member

Dr. Kendall Kirk

Committee Member

Dr. Nathan Smith

Committee Member

Dr. Michael Plumblee

Abstract

Many newer peanut cultivars offer yield benefits but have larger canopies and are taking 10 or more days longer to reach desired maturity levels. Prohexadione calcium (PC) and twin row planting pattern have been reported to increase the amount of orange, brown or black pods compared to their respective alternatives. Four cultivars were selected and studied based on frequency of use in South Carolina then paired into an earlier maturing group that reached optimal maturity at 135 to 140 days after planting, and a later maturing group that reached optimal maturity at 150 or more days after planting.

Twin row plots were associated with cooler ground temperatures than single rows, while the effects of PC on ground temperature varied between cultivars. Twin row planted plots were higher in yield and in percentage of both total sound mature kernels and orange, brown or black kernels. When plants were manually dug and pod maturity was analyzed in the time leading up to digging, PC was consistently associated with an increase in the percentage of orange, brown or black pods, with this advantage being seen in sampling times ranging from 133 to 158 days after planting. In Virginia type cultivars studied and in the Georgia 06G cultivar, twin row planting was followed by significantly higher economic return than single rows, while these results were not seen in the larger, newer runner type cultivars, FloRun 331 and Georgia 16HO.

Included in

Agriculture Commons

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