Effect of nitrogen, ferrous sulphate md zinc sulphate on groundnut (Araclzis hypogaea) yield in deep black soils

Effect of nitrogen, ferrous sulphate md zinc sulphate on groundnut (Araclzishypogaea) yield in deep black soils

A. S. CHmABASAVmA AND R. A. SEm

Agricultural Research Station, University of Agricultural Sciences, Siruguppa, Kamataka 583 121

Received: March 1992

Chlorosis of groundnut (Arachis (Table 1) was laid out in randomized block hypogaea L.) is an important problzm on design with 3 replications. Groundnut ('JL most of the black soil of Tunga Bhadra 24') seeds were dibbled on 27 August 1988 Project area. Factors such as high pH of at 30 cm x 15 cm' spacing. The gross plot and the soil, high soil moisture, excess net plot sizes were 4.5 m x 4.9 m and 3.3 m x phosphorus application and high calcium 3.2 m respectively. Iron sulphate and zinc ,-favour chlorosis. Keeping these points sulphate were applied to the soil @ 10 kgha -( in view an experiment was conducted (at sowing) or sprayed @ 0.5%, 30 days after at Siruguppa during the rainy season sowing as per the treatment (Table 1). of 1988 to study out the response of Phosphorus and potassium were applied @ groundnut to levels of N, FeSO, and 75 and 25 kgha respectively in all the ZnSO,. treatments. The crop was harvested on 5 The experiment consisting of 7 treatments December 1988. The soil was deep black

Table 1. Yield and yield-attributing characters of groundnut as influenced by N levels, soil and fdiar application of ZnSO, and FeSO,

Treatment Pod yield Pods/ 100-grain Branched (qha) plant weight (g) . plant

T,, 25 kg Nha 7.61 4.4 25.27 4.1