Response of groundnut promising lines to various environments

Abstract

The aims of this study was to evaluate the response of groundnut promising lines grown in various environments. A number of 18 groundnut lines and 2 checked cultivars were grown in 3 different environments i.e. lowlands with heavy and loamy soil texture at Ngawi and Banyuwangi Districts, and dry alkaline soils at Tuban District. A randomized block design with three replicates was applied in each site. Each genotype was planted in a 2 m x 5 m plot size with plant spacing of 40 cm interrows x 10 cm intrarow, 1 seed/hole. The basal fertilizer of 250 kg/ha composite NPK Phonska was applied at planting time. Location (site), genotype as well as its interaction significantly influenced the growth and yield variables. Four lines gave good yields at all sites i.e. BK10/LG5-295-50, BK1/LG5-37-64, BK1/LG5-B13-29-6, and BK1/LG5-B13-6-1. These four lines were less stable with its average pod yields were 4.0 t, 4.0 t, 3.9 t, and 4.0 t dry pods/ha consecutevely. Those pod yields were equal that those of checked cultivars Katana 1 and Hypoma 1. Instead of producing high pod yields, those four lines are resistant to leaf spot and rust diseases, so are merit to be proposed as newly superior cultivars.

Contribution of Agronomic and Rust Disease Intensity Traits to Yield Stability of Peanut Genotypes

“…Uge et al [13] tested several peanut genotypes and found similar results. Different results were shown by Purnomo and Rahmiana [6] , who reported that there were genotypes that had resistance to leaf rust. It was further reported that these genotypes have high yield potential similar to that of the comparison varieties Hypoma 1 and Katana 1.…”

“…P. arachidis infection causes a decrease in seed yield and oil quality. Early infection with P. arachidis during the growth period causes economic losses of up to 57% [5] , whereas mixed infections with other foliar disease pathogens can result in yield losses of up to 60% [6] . Several techniques for controlling leaf rust pathogens have been used, including integrated control, intercropping, botanical and synthetic pesticides [7] , induction of biotic resistance [8] , and application of NPK fertilizer [9] .…”