Effects of Plant Density and Leaf Spraying o Growth, Yield and Yield Components of Flixweed (Descurainia sophia L.) as a Medicinal Plant

Document Type : Scientific - Research

Authors

• Abdollah Mollafilabi ¹
• M.R. Gazikinejad ²

¹ Research Institute of Food Science and Technology, Mashhad, Iran

² Department of Horticultural Sciences, Iran

10.22067/jag.v11i1.75552

Abstract

Introduction
Biodiversity of medicinal and aromatic plants contributes significantly towards human livelihood and development and thus plays a predominant role in the wellbeing of the global population. According to WHO reports, around 80 % of the global population still relies on traditional medicines and natural substances. Descurainia sophia L. seed, also known as flixweed, a commonly used herbal medicine in Iranian folk medicine is one of those medicinal herbs with prevalent use. Agronomic practices are required to be standardized for realizing yield potential. Among the different agronomic practices, foliar spray of macronutrients is most important factor in determining the yield. Plant density is another important agronomic factor that manipulates micro- environment and affects growth, development and yield of plants. Within certain limits, increase of plant population density declines the growth and yield per plant but the reverse occurs for yield per unit area. The optimum plant density to attain highest yield may vary with the genotype and agronomic factor. Hence the purpose of this study was to determine the effects of plant density and leaf spraying on growth, yield and yield components of flixweed under Torbat-e Jam climatic conditions.
Materials and methods          
In order to study the effects of plant density and leaf spraying of growth, biological yield, seed yield, yield components and harvest index of flixweed, an experiment was conducted as factorial layout based on a randomized complete block design with three replications at the Agricultural Research Station, Azad University of Torbt-e Jam, Khorasan-e Razavi during growing season of 2016-2017. Treatments included four plant densities (10, 20 and 40 plants.m-2) and leaf straying at three plant stages (such as emergence, before flowering and early seed formation stages) and control (without spraying). Leaf spraying was done using complete fertilizer (5:1000). Studied traits were plant height, number of branches per plant, 1000- seed weight, seed yield, biological yield, dry weight of shoot, fresh weight of shoot and harvest index. The treatments were run as an analysis of variance (ANOVA) to determine if significant differences existed among treatments means. Multiple comparison tests were conducted for significant effects using the Duncan’s test.
Results and discussion
The results showed that the simple effect of plant density was significant (p≤0.05) on number of branches per plant and harvest index of flixweed. The simple effect of foliar spraying was significant (p≤0.05) on number of branches per plant and 1000-seed weight of flixweed. The interaction effect between plant density and foliar spraying had significant effect on number of branches per plant, dry weight of shoot, seed yield, biological yield and harvest index of flixweed. The highest seed yield, biological yield and dry weight of shoot were recorded in 40 plants.m-2+ foliar spraying at early seed formation with 99, 495 and 396 g.m-2, respectively. The minimum seed yield was observed in 10 plants.m-2+ without spraying with 35 g.m-2. The lowest biological yield and dry weight were obtained in 20 plants.m-2+ foliar spraying at early seed formation with 168 and 126 g.m-2, respectively. The results for correlation coefficients between yield and yield components revealed that the highest coefficient was calculated for biological yield and dry weight of shoot (r=0.97**).
Conclusion
Agronomic management strategies had significantly effect on growth, yield, and yield components of flixweed. Generally, plant density and nutrient management are two effective techniques for agronomic management of medicinal plants such as flixweed that may decline the necessity for chemical and intensive approaches to the plant. The findings of the present study indicate that foliar spraying would be an advisable treatment that produces higher seed yield. In total, according to the results, the plant density of 40 plants.m-2+ foliar spraying at early seed formation is recommended to realize maximum seed yield flixweed cultivation in Torbat-e Jam region, Iran.

Keywords

• Seed yield
• Complete fertilizer
• Early seed formation
• Dry weight of shoot

20.1001.1.20087713.1398.11.1.1.6

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References

Adedrian, J., Taiwo, L.B., Akande, M.O., Sobulo, R.A., and Idowu, O.J. 2004. Application of organic and inorganic fertilizer for sustainable maize and cowpea yields in Nigeria. Journal of Plant Nutrition 27: 1163-1181.

Adriana, M., Chamorro, L., Tamagno, N., Bezus, R., and Santiago, J. 2002. Nitrogen accumulation partition and nitrogen use efficiency in canola under different nitrogen availabilities. Soil Science Plant Analysis 33: 493-504.

Arasteh, E., and Farnia, A. 2013. Investigation the effect of drought tension and plant density on quality and quantity characteristics of rapeseed (Brassica napus L.) cultivars in Lorestan climate conditions. Crop Physiology 5(19): 99-111. (In Persian with English Summary)

Baskin, P., Milberg, L., Andersson, J., and Baskin, M. 2004. Germination ecology of seeds of the annual weeds Capsella bursa-pastoris and Descurainia sophia originating from high northern latitudes. Weed Research 44(1): 60-68.

Danesh-Shahraki, A., Kashani, A., Mesgarbashi, M., Nabipour, M., and Koohi-Dehkordi, M. 2008. The effect of plant densities and time of nitrogen application on some agronomic characteristic of rapeseed. Pajouhesh and Sazandegi 79: 10-17. (In Persian with English Summary)

Darzi, M., and Akhani, A. 2016. Effects of biofertilizer and plant density on yield and essential oil of Coriandrum sativum L. Journal of Medicinal and Aromatic Plants 31(6): 1086-1095. (In Persian with English Summary)

Darzi, M., and Nadeali, A. 2015. Study of the Effect of nitroxin nitrogen fertilizer and plant density on yield, yield components and essential oil of Anisum pimpinella L. in Firoozkooh region. Eco-phytochemical Journal of Medicinal Plants 3(1): 63-72. (In Persian with English Summary)

Donald, C.M., and Hamblin, J. 1976. The biological yield and harvest and cereal as aronomic and plant breeding criteria. Advances in Agronomy 28: 361-405.

Efeoğlu, B., Ekmekçi, Y., and Çiçek, N. 2009. Physiological responses of three maize cultivars to drought stress and recovery. South African Journal of Botany 75: 34–42.

Eilkaee, M.N., and Emam, Y. 2003. Effect of plant density on yield and yield components in two winter oilseed rape (Brassica napus L.) cultivars. Iranian Journal of Agricultural Sciences 3(34): 509-515. (In Persian with English Summary)

Gardner, F.P., Pearce, B., and Mitchell, R. 2010. Physiology of Crop Plants. Scientific Publishers. Crops 327 pp.

Ghasemi, S., Sharifi Ashoorabadi, E. 2014. Effects of density and intercropping of safflower (Carthamus tinctorious L.) and rocket sativa (Eruca sativa L.) on yield and land equivalent ratio. Iranian Journal of Medicinal and Aromatic Plants 30(2): 342-352. (In Persian with English Summary)

Ghobadi, M., Jahanbin, S., Motalebi Fard, R., and Parvizi, K. 2011. The effect of biological phosphate fertilizers to yield and yield components of potato. Sustainable Agriculture and Production Science 21(2): 117-130. (In Persian with English Summary)

Heidari, F., Zehtab Salmasi, S., Javanshir, A., Aliari, H., and Dadpoor, M.R. 2008. The effects of application of microelements and plant density on yield and essential oil of peppermint (Mentha piperita L.). Iranian Journal of Medicinal and Aromatic Plants 24: 1-9. (In Persian with English Summary)

Hosseinpour, M., Habibi, H., and Fotokian, M. 2012. Effect of chemical and biological nitrogen on quality and quantity of anise (Pimpinella anisum L.). Iranian Journal of Medicinal and Aromatic Plants 28(3): 551-566. (In Persian with English Summary)

Huang, M., Liang, T., Ou-Yang, Z., Wang, L., Zhang, C., and Zhou, C. 2011. Leaching losses of nitrate nitrogen and dissolved organic nitrogen from a yearly two crops system, wheat-maize, under monsoon situations. Nutrient Cycling in Agroecosystems 91: 77-89.

ISTA. 2010. International rules for seed testing. Glattbrugg, Switzerland. 290 p.

Jones, C., Olson- Rutz, K., and Pariera Dinkins, C. 2011. Nutrient uptake timing by crop: to assist with fertilizing decisions. Report of Project in Department of Land Resources and Environmental Sciences p. 1-8.

Kandil, A.A., El-Mahands, S.I., and Mahrous, N.M. 1996. Genotypic and phenotypic variety heritability and inter relationships of some characters in oil seed rape. Canadian Journal of Plant Science 65: 275-284.

Karimi Afshar, A., Baghizadeh, A., and Mohammadi-Nejad, G. 2016. Evaluation of relationships between morphological traits and grain yield in cumin (Cuminum cyminum L.) under normal and drought conditions. Journal of Crop Breeding 8(18): 159-165. (In Persian with English Summary)

Lebaschy, M.H., and Sharifi, E. 2004. Application of physiological growth indices for suitable harvesting of Hypericum perforatum. Pajouhesh v Sazandegi (65): 65-75. (In Persian with English Summary)

Mae, T., Inaba, A., Kaneta, Y., Masaki, S., Sasaki, M., Aizawa, M., Okawa, S., Hasegawa, S., and Makino, A. 2008. A large -grain rice cultivar, Akita 63, exhibits high yield with high physiological nitrogen use efficiency. Field Crops Research 34(4): 123-139.

Malakouti, M.J., Keshavarz, P., and Karimian, N. 2008. A comprehensive approach towards identification of nutrients deficiencies and optimal fertilization for sustainable agriculture. Tarbiat Modarres University Press, Tehran, Iran. 755 p. (In Persian)

Marroti, M., Piccaglia, R., and Giovanelli, E. 1996. Differences in essential composition of basil (Ocimum basilicum L.) Italian cultivars related to morphological characteristics. Journal of Agriculture and Food Chemistry 44: 3926-3929.

Mostafavi, M.J. 2014. The effect of chemical and biological fertilizers on quantitative and qualitative yield of sesame (Sesamum indicum L.) in Mashhad climate condition. MS.c. Thesis. Ferdowsi University of Mashhad, Mashhad, Iran. (In Persian with English Summary)

Najafpour Navaei, M., Golipour, M., and Parsa, E. 2008. The effects of densities and planting dates on seed yield of Agrimonia eupatoria L. Iranian Journal of Medicinal and Aromatic Plants 24(2): 198-206. (In Persian with English Summary)

Norouzi, A., and Shahbazi, I. 2011. The role of extension education in development of organic agriculture in Iranian villages. Community Development (Rural and Urban Communities) 2(2): 1-22.

Ozgüven, M., Muzaffer, K., Şener, B., Orhan, I., Şeeroğlu, N., Kartal, M., and Kaya, Z. 2008. Effects of varying nitrogen doses on yield, yield Components and artemisinin content of Artemissia annua L. Industrial Crops and Products 27: 60-64.

Rassam, G.A., Naddaf, M., and Sephidkon, F. 2007. Effects of sowing time and plant density on yield and yield components of seed in Anise (Pimpinella anisum). Pajouhesh v Sazandegi 75: 127-132. (In Persian with English Summary)

Rezvani Moghaddam, P., Mohammadabadi, A., and Moradi, R. 2011. The effect of application of chemical and organic fertilizers on yield and yield components of sesame (Sesamum indicum L.) in different plant densities. Journal of Agroecology 2(2): 256-265. (In Persian with English Summary)

Roose, T. 2000. Mathematical model of plant nutrient uptake. PhD. Thesis. University of Oxford, UK.

Tosi Kehal, P., Esfahani, M., Rabiei, M., and Rabiei, B. 2011. Effect of concentration and time of supplementary nitrogen fertilizer application on yield and NUE of rapeseed (Brassica napus L.) as a second crop in paddy field. Iranian Journal of Field Crop Science 42(2): 387-396. (In Persian with English Summary)

Yates, D.J., and Steven, M.D. 1987. Reflection and absorption of solar radiation by flowering canopies of oilseed rape (Brassica napus L.). The Journal of Agricultural Science 109: 495-502.