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Current IssueEditorial BoardOnline First ArticlesArchive

volume 36 issue 4 (august 2013) : 318-322

SPRAYING OF SOYBEANS WITH NITROGENOUS FERTILIZERS AT EARLIER FLOWERING STAGE: AN ECOFRIENDLY FERTILIZATION MANAGEMENT SYSTEM TO IMPROVE CROP YIELD

B
Bahram Mirshekari
1Department of Agronomy and Plant Breeding, Tabriz Branch, Islamic Azad University, Tabriz, Iran

  • Submitted|

  • First Online |

  • doi

Cite article:- Mirshekari Bahram (2025). SPRAYING OF SOYBEANS WITH NITROGENOUS FERTILIZERS AT EARLIER FLOWERING STAGE: AN ECOFRIENDLY FERTILIZATION MANAGEMENT SYSTEM TO IMPROVE CROP YIELD. Legume Research. 36(4): 318-322. doi: .

ABSTRACT

The experiment was conducted to study the effect of nitrogenous fertilizers on soybean leaf senescence and crop yield at Islamic Azad University of Tabriz, Iran. The experiment was carried out as a split-split plot based on randomized complete block design in three replications with three treatments viz.,  two soybean cultivars (L17 and Zan), nitrogen fertilizers (urea and ammonium nitrate) and rate of nitrogen (15, 25 and 35 kg ha-1). The stepwise regression analysis was carried out to test the significance of the independent variables affecting the seed yield as a dependent variable. Application of 15, 25 and 35 kg N ha-1 delayed nearly 2, 6 and 10 days in the leaf fall, respectively. With increasing of nitrogen rate, leaf chlorophyl content index increased significantly, compared to the check plots. Seed yield in cv. L17 treated with nitrate ammonium and cv. Zan treated with urea could be increased upto 6700 and 5100 kg ha-1, respectively. The multiple regression equation indicated that among the independent variables tested, the leaf senescence time and leaf chlorophyl content index showed a significant positive effect (P

REFERENCES

  1. Bharati, M.P., Whigham, D.K. and Voss, R.D. (1986). Soybean response to tillage and N, P and K fertilization. Agronomy Journal. 78: 947-950. 2.
  2. Bly A., Woodard, H.J. and Winther, D. (1998). Nitrogen application timing and rate effects on irrigated soybean grain parameters at Estelline and Aurora, SD in 1998. Soil PR98-36. In: Soil/Water Science Research 1998 Annual Report, TB 99. South Dakota Agricultural Experimental Station, Bookings, SD.
  3. Ebadi A., Tobeh A., Karbalaie Khiavi, H. and Khodadoust, Z. (2006). Study effect of nitrogen application in water deficit conditions on yield and yield components of soybean. Iranian Journal of Pajouhesh and Sazandegi. 71: 51-57.
  4. Egli, D.B. and Crafts-Brandner, S.J. (1996). Soybeans: Marcel Dekker, New York, pp. 593-623.
  5. Flavio, H., Boem, G., Javier, D., Rimski-Korsakov, H. and Raúl, S.L. (2004). Late season nitrogen fertilization of soybeans: effects on leaf senescence, yield and environment. Nutrient Cycling in Agro-ecosystems. 68(2): 109-115.
  6. Harper, H. (1999). Soybean yield response to reproductive stage nitrogen and boron applications. Agronomy Journal. 93: 1200-1209.
  7. Hatami, H., Inehband, A., Azizi, M. and Dadkhah, A. (2009a). Effect of N fertilizer on growth and yield of soybean at North Khorasan. Electronic Journal of Crop Production, 29(2): 25-42.
  8. Hatami, H., Inehband, A., Azizi, M., Soltani, A. and Dadkhah, A. (2009b). Response of soybean cultivars to nitrogen and potassium application at North Khorasan. New Sciences in Sustainable Agriculture. 5(15):13-23.
  9. Salvagiotti, F., Cassman, K.G., Specht, J.E., Walters, D.T., Weiss, A. and Dobermann, A. (2008). Nitrogen uptake, fixation and response to fertilizer N in soybeans: A review. Field Crops Research. 108(1): 1-13.
  10. Shude, T., Fenghua, X. and Zhanli, C. (2008). Studies on protective nitrogen fertilization in soybean.b!. The imitative resolving comparative trial of soybean “ridge three” culture practices. Journal of heilongjinag august first land reclamation university.
  11. Sij, J.W., Turner, F.T. and Craigmiles, J.P. (2008). “Starter nitrogen”; fertilization in soybean culture. Communications in Soil Science and Plant Analysis. 1451-1457
  12. Zatapa, M. (2007). Applied N and moisture level effect on yield of soybean. Agronomy Journal. 102: 827-832.
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    volume 36 issue 4 (august 2013) : 318-322

    SPRAYING OF SOYBEANS WITH NITROGENOUS FERTILIZERS AT EARLIER FLOWERING STAGE: AN ECOFRIENDLY FERTILIZATION MANAGEMENT SYSTEM TO IMPROVE CROP YIELD

    B
    Bahram Mirshekari
    1Department of Agronomy and Plant Breeding, Tabriz Branch, Islamic Azad University, Tabriz, Iran

    • Submitted|

    • First Online |

    • doi

    Cite article:- Mirshekari Bahram (2025). SPRAYING OF SOYBEANS WITH NITROGENOUS FERTILIZERS AT EARLIER FLOWERING STAGE: AN ECOFRIENDLY FERTILIZATION MANAGEMENT SYSTEM TO IMPROVE CROP YIELD. Legume Research. 36(4): 318-322. doi: .

    ABSTRACT

    The experiment was conducted to study the effect of nitrogenous fertilizers on soybean leaf senescence and crop yield at Islamic Azad University of Tabriz, Iran. The experiment was carried out as a split-split plot based on randomized complete block design in three replications with three treatments viz.,  two soybean cultivars (L17 and Zan), nitrogen fertilizers (urea and ammonium nitrate) and rate of nitrogen (15, 25 and 35 kg ha-1). The stepwise regression analysis was carried out to test the significance of the independent variables affecting the seed yield as a dependent variable. Application of 15, 25 and 35 kg N ha-1 delayed nearly 2, 6 and 10 days in the leaf fall, respectively. With increasing of nitrogen rate, leaf chlorophyl content index increased significantly, compared to the check plots. Seed yield in cv. L17 treated with nitrate ammonium and cv. Zan treated with urea could be increased upto 6700 and 5100 kg ha-1, respectively. The multiple regression equation indicated that among the independent variables tested, the leaf senescence time and leaf chlorophyl content index showed a significant positive effect (P

    REFERENCES

    1. Bharati, M.P., Whigham, D.K. and Voss, R.D. (1986). Soybean response to tillage and N, P and K fertilization. Agronomy Journal. 78: 947-950. 2.
    2. Bly A., Woodard, H.J. and Winther, D. (1998). Nitrogen application timing and rate effects on irrigated soybean grain parameters at Estelline and Aurora, SD in 1998. Soil PR98-36. In: Soil/Water Science Research 1998 Annual Report, TB 99. South Dakota Agricultural Experimental Station, Bookings, SD.
    3. Ebadi A., Tobeh A., Karbalaie Khiavi, H. and Khodadoust, Z. (2006). Study effect of nitrogen application in water deficit conditions on yield and yield components of soybean. Iranian Journal of Pajouhesh and Sazandegi. 71: 51-57.
    4. Egli, D.B. and Crafts-Brandner, S.J. (1996). Soybeans: Marcel Dekker, New York, pp. 593-623.
    5. Flavio, H., Boem, G., Javier, D., Rimski-Korsakov, H. and Raúl, S.L. (2004). Late season nitrogen fertilization of soybeans: effects on leaf senescence, yield and environment. Nutrient Cycling in Agro-ecosystems. 68(2): 109-115.
    6. Harper, H. (1999). Soybean yield response to reproductive stage nitrogen and boron applications. Agronomy Journal. 93: 1200-1209.
    7. Hatami, H., Inehband, A., Azizi, M. and Dadkhah, A. (2009a). Effect of N fertilizer on growth and yield of soybean at North Khorasan. Electronic Journal of Crop Production, 29(2): 25-42.
    8. Hatami, H., Inehband, A., Azizi, M., Soltani, A. and Dadkhah, A. (2009b). Response of soybean cultivars to nitrogen and potassium application at North Khorasan. New Sciences in Sustainable Agriculture. 5(15):13-23.
    9. Salvagiotti, F., Cassman, K.G., Specht, J.E., Walters, D.T., Weiss, A. and Dobermann, A. (2008). Nitrogen uptake, fixation and response to fertilizer N in soybeans: A review. Field Crops Research. 108(1): 1-13.
    10. Shude, T., Fenghua, X. and Zhanli, C. (2008). Studies on protective nitrogen fertilization in soybean.b!. The imitative resolving comparative trial of soybean “ridge three” culture practices. Journal of heilongjinag august first land reclamation university.
    11. Sij, J.W., Turner, F.T. and Craigmiles, J.P. (2008). “Starter nitrogen”; fertilization in soybean culture. Communications in Soil Science and Plant Analysis. 1451-1457
    12. Zatapa, M. (2007). Applied N and moisture level effect on yield of soybean. Agronomy Journal. 102: 827-832.
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