The Effect of Different Types and Amounts of Nitrogen Fertilizer on Canola (Brassica napus L. Hayola50) and Chickpea (Cicer arietinum L. Local white) Yield and Yield Components and Land Equality Ratio in Intercropping at Fasa Region

Subject Areas : Journal of Crop Ecophysiology

Samad Rezayat ¹ , Mohammad Rahim Owji ² , Farhad Mohajeri ³ , Mehdi Madandousd ⁴

1 - Department of Agronomy, Fasa Branch, Islamic Azad University, Fasa, Iran
2 - Department of Agronomy, Fasa Branch, Islamic Azad University, Fasa, Iran
3 - Department of Agronomy, Fasa Branch, Islamic Azad University, Fasa, Iran
4 - Department of Agronomy, Fasa Branch, Islamic Azad University, Fasa, Iran

Received: 2020-12-12 Accepted : 2021-05-19 Published : 2022-07-23

Keywords: Urea, Intercropping, land equivalent ratio, Ammonium sulfate,

Abstract :

In recent years, researchers have increasingly focused on maintaining the stability and fertility of agricultural production systems. One of the ways to increase stability is to create diversity through the use of multi-culture systems. In order to investigate the yield of Canola and Chickpeas in different cultivation ratios with different types and amounts of nitrogen fertilizer in Fasa region, an experiment was performed on 2018-2019 as factorial in complete randomized block design with three replications in the research farm of Dastjeh, Fasa region. Factors included the ratio of planting peas and canola in 5 levels: 0-100, 25-75, 50-50, 75-25 and 100-0, respectively, pea-canola and type and the amount of nitrogen fertilizers at 6 levels including urea 140 kg.ha-1 urea 120 kg ha-1, urea 100 kg ha-1, ammonium sulfate 140 kg.ha-1, ammonium sulfate 120 kg.ha-1, sulfate Ammonium 100 kg.ha1. The results showed that different planting ratios had a significant effect on canola and pea yield. Increasing the ratio of chickpeas in mixed with canola and rapeseed in mixed with chickpea cultivation significantly reduced their yield compared to their net cultivation. The highest yield of canola and chickpeas with 2240.1 kg.ha-1 and 2155.75 kg.ha-1 in net cultivation of canola and chickpeas and the lowest yield of rapeseed and chickpeas with the average of 1548.06 and 1187.3 kg.ha-1, respectively, were obtained in Planting ratios of 25-75 and 75-25 (canola-chickpeas). Comparing ammonium sulfate and urea to increase canola yield, the results showed that ammonium sulfate increased canola yield more than urea. The ratio of land equivalent ratio (LER) in all mixed planting ratios under different levels of nitrogen fertilizer increased compared to a single cropping (LER> 1).

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