Soil water extraction and root growth in five groundnut genotypes under different soil moisture regimes

摘要

In a field study in Andhra Pradesh, soil moisture extraction patterns and root growth parameters were examined in five groundnut cultivars under various levels of soil water stress. Significant variation in soil moisture extraction, root length density and total dry matter production were observed among the cultivars. The differences in water extraction, in deeper soil profiles were related to the variation in root length density. Cv. ICGV 86031 and TMV2NLM were efficient in soil water extraction and suffered least losses (17-18%) in total dry matter production under moisture stress compared to cv. ICG476.