Investigating the Effect of Planting Date, Irrigation, and Nutrition on Seed and Oil Yield of Niger plant (Guizotia abyssinica (L.F.) Cass) in Pakdasht Region

Study of the promising plant Niger seed with the goal of oil production in Pakdasht

This research was carried out in the form of a split-split plot in the form of a randomized complete block design with three replications in the year 2021 in the Aburihan campus research farm located in Pakdasht. In this study, irrigation cycle in three levels (once every 7 days, once every 10 days and once every 13 days) as the main factor, planting date in two levels (5 June and 22 June) as a secondary factor and fertilizing with bio-fertilizers In four-level including control (without biofertilizer), Shift biofertilizer, Chris biofertilizer and the combination of Shift and Chris biofertilizers as sub-factors were considered.

The results showed that the plants cultivated on June 22 were superior to the plants cultivated on June 5 in all investigated traits (including yield components, seed yield, and biological yield) and all three tested irrigation levels. Also with increasing levels of drought stress, the seed yield has significantly decreased in both planting dates under investigation. However, the ratio of seed yield reduction under drought stress was significantly lower in plants cultivated on June 22nd compared to those cultivated on June 5th.

The cultivation of seed Niger plant with the application of Chris biofertilizer in the same weather conditions on June 22nd, is recommended as a promising plant that has an acceptable yield from an agricultural point of view and its product has a high oil content.