Five Years of Subsurface Drip Irrigation on Peanut: What Have We Learned?

Long term peanut yield with various crop rotations and irrigated with subsurface drip irrigation (SDI) is not known. A subsurface drip irrigation system was installed in 1998 on a Tifton loamy sand (Fine-loamy, kaolinitic, thermic Plinthic Kandiudults) with five crop rotations, two drip tube lateral...

Full description

Saved in:
Bibliographic Details
Published in:Peanut science 2005, Vol.32, p.14-19
Main Authors: Sorensen, R.B, Butts, C.L, Rowland, D.L
Format: Article
Language:English
Subjects:
Arachis hypogaea
corn
cotton
crop management
crop rotation
crop yield
Gossypium hirsutum
irrigation rates
irrigation systems
microirrigation
peanuts
spatial distribution
subsurface irrigation
Zea mays
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Long term peanut yield with various crop rotations and irrigated with subsurface drip irrigation (SDI) is not known. A subsurface drip irrigation system was installed in 1998 on a Tifton loamy sand (Fine-loamy, kaolinitic, thermic Plinthic Kandiudults) with five crop rotations, two drip tube lateral spacings, and three irrigation levels. Crop rotations ranged from continuous peanut (Arachis hypogaea L.) to four years between peanut rotated with either cotton (Gossypium hirusutum L.) and/or corn (Zea mays L.). Laterals were installed underneath each crop row (narrow) and alternate row middles (wide). Crops were irrigated daily at 100, 75 and 50% of estimated crop water use. Continuous peanut yields averaged 3107 kg ha-1 while peanut in rotation averaged 4031 kg ha-1. Yield of peanut in any rotation and with narrow spaced drip tube laterals averaged 4883 kg ha-1 and wide spaced laterals averaged 4592 kg ha-1. Peanut in any rotation and irrigated at 75% had the same pod yield as the 100% irrigated implying a possible 25% water savings for this agricultural region. Peanut planted in alternate year rotations following cotton and corn averaged 4302 kg ha-1 across all irrigation levels. Peanut yield following corn in the rotation and irrigated at the 75% irrigation level averaged 5018 kg ha-1. Peanut yield in longer rotations (3 to 4 years) averaged 5309 kg ha-1 across all water levels and lateral spacing. Overall, best peanut yield (average 5400 kg ha-1) was found with at least two years between peanut crops, narrow drip tube spacings, and irrigated at 75% of estimated crop water use. Lowest peanut yield (2996 kg ha-1) was shown with continuous peanut, drip tube laterals at wide spacings, and irrigated at 50% of estimated crop water use.
ISSN:0095-3679