Resumo

APAEZ BARRIOS, Maricela et al. Row spacing, nitrogen and chickpea production residual moisture. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.2, pp.223-234. ISSN 2007-0934.

The chickpea is used in food and feed. It is grown without fertilization, 80 cm row spacing yield of 0.6 t ha-1. A suitable topological arrangement and nitrogen fertilization can increase the yield of chickpea. The objective was to determine, under conditions of residual moisture, topological arrangement and appropriate to increase performance and profitability dose of nitrogen. The study was established in Huitzuco, Guerrero, Mexico, in 2011. We used a Creole, seeded 40 and 80 cm row spacing (D40 and D80, respectively), and fertilized with 0, 50 and 100 kg of N Ha-1 (N0, N50 and N100, respectively). The total biomass (BT), harvest index (IC), grain yield (RG), efficient use of water for BT (EUAB) and RG (EUAG) was evaluated. The results were analyzed with SAS and Tukey test at 5% probability. In addition, an economic analysis was applied. The results indicate that BT, RG, IC, EUAG, EUAB were significantly affected by D, N and D*N. With D40 and N100 as BT (818 g m-2), IC (31%), RG (227 g m-2), EUAG (0.68 g m-2 mm-1) and EUAB (2.15 g m-2 mm-1). The RG increased is resulted from increase in the number of pods (781 m-2), weight of hundred grains (51 g), number of grains (791 m-2) and economic profit ($ 20 649). The heat requirement was 2 295 °C days and evapotranspiration of 380 mm of planting to maturity.

Palavras-chave : Cicer arietinum L.; harvest index; profitability; total biomass.