CIFOR–ICRAF publishes over 750 publications every year on agroforestry, forests and climate change, landscape restoration, rights, forest policy and much more – in multiple languages.

CIFOR–ICRAF addresses local challenges and opportunities while providing solutions to global problems for forests, landscapes, people and the planet.

We deliver actionable evidence and solutions to transform how land is used and how food is produced: conserving and restoring ecosystems, responding to the global climate, malnutrition, biodiversity and desertification crises. In short, improving people’s lives.

The interaction of cowpea maturity with degree of waterlogging in the post-rice environment

Export citation

Cowpea (Vigna unguiculata (L.>) Walp) is grown widely as an inexpensive source of protein in tropical regions. Production is often limited by either waterlogged or dry soils in the wet-dry transition period following rice because periodically saturated soils are followed by progressively severe drought. an optimum fit of cultivar phenology to these situations is crucial to higher, stable yields. The responses of a set of diverse cowpea cultivars differing in maturity were compared under a line-source moisture gradient applied during the vegetative stage on a isohyperthermic, clayey, Typic Tropudalf with a fluctuating shallow water table, during two dry season in the Philippines. In 1986-87, in saturated soil, the mean yields of the medium-maturing grain (460 g ha-1) and dual-purpose (460 kg ha-1) types exceeded yield of the early maturing grain (250 kg ha-1) and vegetable (210 kg ha -1) types, with a similar ranking (920, 730, 470, and 390 kg ha-1) without irrigation. In 1988, the medium-maturing cultivar group had a mean yield 985 kg ha-1 in saturated soil and 1389 kg ha-1 in unirrigated, again exceeding the early-maturity group with yields of 544 and 985 kg ha-1, respectively. Saturated soil reduced seed yields by 10 to 71 in 1986-87 and 10 to 42 in 1988. Pods per plant, seeds per pod, and individual seed mass of the cultivars were reduced 13 to 32, 12 to 19, and 3 to 12, respectively. The results suggest that the best medium-maturing cultivars had superior adaptation to that of the best expected in post-rice niches with a deep water table and limited soil water reserves.

Altmetric score:
Dimensions Citation Count:

Related publications