DEVAPPA*, B. SANDHYA RANI, N. SUNITHA, B. SANTHOSH AND V. CHANDRIKA

Department of Agronomy, S.V. Agricultural College, ANGRAU, Tirupati-517 502.

ABSTRACT

A field experiment entitled “Response of groundnut (Arachis hypogaea L.) to varied levels of phosphorus and nano DAP” was conducted at Dryland Farm, S.V. Agricultural College, Tirupati campus of Acharya N.G. Ranga Agricultural University, Andhra Pradesh, India during rabi, 2023-24. The experiment was laid down in the randomized block design and replicated thrice. The results showed that significantly higher plant height, leaf area index, dry matter production, pod and haulm yield were recorded with application of 50 % RDP through DAP as basal + seed treatment with nano DAP @ 4 ml kg-1 + nano DAP spray @ 2 ml l-1 of water at 25 DAS, which was found to be on par with 50 % RDP through DAP as basal + nano DAP spray @ 2 ml l-1 of water at 25 DAS. Significantly lower values were recorded in control (No application of P).

KEYWORDS: Haulm yield, Nano DAP, Phosphorus, Pod yield, Seed treatment.