Effect of irrigation levels and bed-system of planting on seed fill duration, seed growth rate, yield and yield components of spring wheat (Triticum aestivum) under semiarid condition

摘要

A field experiment was conducted to study the impact of irrigation levels (I2 = 2-Irrigation, I3 = 3-Irrigation, I4 = 4-Irrigation, I5 = 5-Irrigation) and bed-system of planting (P1 = Flat planting in rows, P2 = Flat planting 3rd row skip, P3 = Bed planting broadcast on beds and P4 = Bed planting 3 rows on beds) on wheat. The experiment was conducted at the Agronomy Research Farm of The University of Agriculture Peshawar, for two years during 2001-02 and 2002-03. The experiments were designed in RCBD with split plot arrangements. Data were recorded on number of productive tillers m-2, seed fill duration, mean seed growth rate, number of grains spike-1, thousand grains weight (g) and grain yield (kg ha-1). The results revealed that productive tillers m-2, number of grains spike-1, seed growth rate, thousand grains weight and grain yield kg ha-1 was significantly affected by planting methods and irrigation levels. The plot irrigated five times produced more productive tillers m-2, more grains spike-1, seed growth rate, thousand grains weight and grain yield kg ha-1. Highest grain yield (5294 kg ha-1) were noted in plots of 3 rows on beds as well as 3 rows on beds irrigated five times produced highest grain yield comparatively. It was concluded from this study that bed planting method 3 rows on beds along with five irrigations could increase yield and yield components of spring wheat under semiarid climate.