Response of Maize Varieties to Varying Rates of Fertilizer and Manure Application [printed text] / Adhikary, Bishnu H., Author ; B.R. Baral, Author ; Shrestha, J., Author ; M. Tripathi, Author ; Robinson Adhikary, Author ; Kunwar, C.B., Author . - 2012.
In: Proc. of Abstracts. pp 25-26. In: Proc. Of Abstracts. Economic Growth Through Science, Technology and Innovation.Paper presented at the Sixth National Conference on Science and Technology (NAST), organized by Nepal Academy of Science and Technology (NAST) held at Hotel Everest, New Baneswor, Kathmandu, on September 25-27, 2012 (Aswin 9-11, 2069).
Languages : English (eng)

Keywords:

fertilizer  and  manures;  grain  yield;  maize  genotypes  significant  effect.

Abstract:

The development of agronomic practices in terms of ‘maize genotypes and nutrient management’ is essential for enhancing maize productivity. In order to identify and evaluate suitable rates of fertilizers (NPK and farmyard manures) to different maize genotypes, field experiments were conducted at Rampur, Chitwan during the winter season of 2009/10 and 2010/011. Five levels of fertilization; (1) Control (zero fertilizer), (2) Farm yard manure (FYM) 10 t ha-1, (3); 60:30:20 N, P2O5 and K2O plus FYM 10 t ha-1; (4) 120: 60: 40 N, P2O5 and K2O plus FYM 10 t ha-1; (5) 180: 90: 60 N, P2O5 and K2O kg ha-1 plus FYM 10 t ha-1 and (6) 120: 60: 40 N, P2O5 and K2O kg ha-1 ) applied to four maize genotypes (Rampur Composite, Manakamana-4, Across9942 / Across 9944 and S99TLYQ-B) in the experiment. The experiment was laidout in a factorial RCB design with three replications. The plot size was 12 sq. m (4 m x 3 m) and the crop was planted in the month of October and harvested in April. The results revealed that most of the growth and yield parameters were found significantly increased with increased level of fertilizers (180:90:60 kg N, P2O5 and K2O plus 10 t of compostr ha-1) in Rampur Composite, Manakamana-4 and Across 9942 / Across 9944 where as these parameters were significantly increased in S99TLYQ-B variety with the fertilization level of 120: 60: 40 N, P2O5 and K2O plus FYM 10 t ha-1. Highest grain yield (6068 kg ha-1) was recorded in the year 2009/010 when fertilized by 180: 90: 60 N, P2O5 and K2O plus FYM 10 t ha-1 irrespective of the genotypes, and 4882 kg of grains produced by Rampur composite variety in this year irrespective of the fertilizer levels. Two years mean yield results revealed that varieties such as Manakamana-4, Rampur composite and Across 9942 / Across 9944 produced highest grain yield (5074 kg, 5195 and 5052 kg grains ha-1, respectively) with N, P2O5 and K2O at 180: 90: 60 kg ha-1 plus FYM 10 t ha-1.This paper discuss and highlights the results of fertilizer and manures application on different maize genotypes in detail.