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Showing 2 results for Rabiee
Mohamad Rabiee, Seyed Reza Seyedi,
Volume 11, Issue 44 (12-2019)
Abstract
In order to expedite rapeseed maturity and reduce the overlap time of rice transplanting and rapeseed harvesting in paddy fields of Guilan province, the present experiment was conducted to investigate the effect of paraquat drying on a factorial randomized complete blocks design with three replications at research farm of Rice Research Institute of Iran- Rasht. Experimental factors considered paraquat consumption at three levels 0.2, 0.4 and 0.6 liters per hectare and three applications time when grain moisture content in silique was 20, 40 and 60 percent. Also, a control treatment without paraquat consumption was considered. The results showed that drying treatment reduced significantly growth duration and accelerated 6 days in rapeseed harvest compared to control treatment and had no significant effect on grain yield (1965 kilogram per hectare), oil percent 43.14 percent) and oil yield (848 kilogram per hectare). Among the investigated treatments, the consumption of 0.2 liters per hectare of paraquat at 60 percent grain moisture level due to maximum germination percentage (95.1 percent), grain yield (2254 kilogram per hectare), oil yield (984 kilogram per hectare) showed more significant difference than consumption treatments of 0.4 and 0.6 liters per hectare. According to the lack of negative effect drying treatments on grain yield and oil percent of rapeseed, it seems spraying of these compounds by reducing the overlap duration of rapeseed harvesting with rice transplanting in Guilan province, creating employment and preventing field useless in the second half of the year and increasing farmers' income is appropriated.
Mohammad Rabiee, Sajjad Shaker-Kouhi,
Volume 16, Issue 62 (11-2024)
Abstract
In order to investigate the effects of nitrogen levels, planting and tillage methods on the dry matter remobilization and current photosynthesis in rapeseed (Brassica napus L.) in paddy field conditions, a split factorial experiment in complete randomized block design was conducted with three replications at research fields of Rice Research Institute of Iran in Rasht during two cropping seasons of 2016-2018. In this experiment, three tillage systems (conventional tillage, minimum tillage and no-tillage) were considered as main plots and two planting methods (direct and transplanting) and four rates of nitrogen (N) fertilizer from urea source (0, 100, 200 and 300 kg.ha-1) as factorial arrangement in subplots. The results showed that the second year of the experiment had the maximum dry matter remobilization (583.96 g.m-2), current photosynthesis (2764.68 g.m-2) and grain yield (3348.6 Kg.ha-1). The dry matter remobilization, remobilization efficiency, share of remobilization and grain yield for the transplanting method was higher than the direct seeding method. Among the N levels, the treatments of 200 and 300 kg.ha-1 had the highest dry matter remobilization, current photosynthesis and grain yield. Based on the results of this experiment, minimum tillage system with 200 kg.ha-1 of N in transplanting method can increase dry matter remobilization, current photosynthesis and grain yield of rapeseed in paddy fields of Guilan province.
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