Effects of different plant densities, fertilization rates and furrowing on foraged soybean production
Keywords:
Fertilizer, Furrower, Soybean (Glycin Max), Seeding rate.Abstract
A field experiment carried out at the research farm, Gorgan University of Agricultural Sciences and Natural Resources, Iran, in 2013. The main objective of the present study was to determine the effect of plant densities, fertilization rates and furrowing on yield and some morphological characteristics of soybean. The other objective of this study was, if pod packaging phenomena did not happen; can be used from morphologic advantages of this plant as replacement strategy and as foraged soybean or not. Therefore, an experimental design laid out in a randomized complete block design arranged in a split plot factorial with three replications. The main plots attributed to planting density at three levels (100000, 150000 and 200000 bush ha-1). The sub plots attributed to fertilization rate, Urea 46% at three levels (100, 200 and 300 kg ha-1). The sub-sub plots attributed to land aeration (creating gutter and hillock with furrower) between the rows, during crop protection at two levels (furrowed and non-furrowed only as control). The results showed that with increasing number of plants per plot; dry matter weight and plant height increased to 508.7 kg ha-1 and 68.8 cm, respectively. However, stem diameter, number of leaf and number of branch decreased to 5.79 mm, 37.1, and 6.4, respectively. Fertilization rate, furrowing and interaction of plant density × fertilizer rate × furrowing showed dry matter weight, stem diameter, number of leaf, plant height and number of branch were highest with increasing plant density. The urea fertilizer (46%) and furrowing between the rows indicated that the quantity increase for triple interaction for the afore-mentioned traits were 631.6 kg ha-1, 12 mm, 73, 78.7 cm and 10.33, respectively. Overall findings demonstrated that using fertilizer and furrowing between the foraged soybeans rows may create more bushes efficient via absorption of urea followed by furrowing. Therefore, that it caused the greater morphological yield.
