BIOSTIMULYATORLAR TA’SIRIDA G‘O‘ZA BARGLARIDAGI SPAD QIYMATLARI (XLOROFILL MIQDORI) NI O‘RGANISH
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Ushbu maqolada g‘o‘za navlariga biostimulyatorlar ta’sir ettirib, ulardagi xlorofill miqdorini o‘rganish bo‘yicha olib borilgan
tadqiqotlar natijalari keltirilgan. Tadqiqotda g‘o‘za navlariga biostimulyatorlar ta’sir ettirib vegetatsiya davrining turli
bosqichlarida o‘simlik barglaridagi SPAD qiymatlari o‘rganilgan. Xlorofill miqdori SPAD 502 Chlorophyll Fluorescence Meter
dasgoxida o‘lchandi. Olingan natijalarga ko‘ra, biopreparatlar bilan ishlov berilgan namunalarda SPAD qiymatlari nazoratga
nisbatan sezilarli darajada yuqori ko‘rsatkich namoyon etdi.
1. Judith G C, Kenji O. (1990) Chlorophyll a Fluorescence and Carbon Assimilation in Developing Leaves of Light-Grown
Cucumber. Plant Physiol, 93, 1078-1082. http://dx.doi.org/ 10.1104/pp.93.3.1078
2. Wang S H, Cao W X, Wang Q S, Ding Y F, Huang P S, Ling Q H. (2002) Positional Distribution of Leaf Color and
Diagnosis of N Nutrition in Rice Plant. Scientia Agricultura Sinica, 35, 1461-1466 (in Chinese with English Abstract).
3. Li Z H, Liu H B, Zhang Y G. (2006) A Review on Chlorophyll Meter Application on N Fertilizer Recommendation. Acta
Metallurgica Sinica, 12, 125-132 (in Chinese with English Abstract).
4. Hu H, Bai Y L, Yang L P, Lu Y L, Wang L, Wang H, Wang Z Y. (2010) Diagnosis of N Nutrition in Winter Wheat
(Triticum aestivum) via SPAD-502 and Green Seeker. Chinese Journal of Eco-Agriculture, 18, 748-752 (in Chinese with
English Abstract). http://dx.doi.org/ 10.3724/SP.J.1011.2010.00748
5. Jiang B W, Dai J J, Wang C H, Wang L J, Jia W K, Chi F Q. (2010) Effect of N Management on the Relationship of Leaf
SPAD with N Absorption of Corn in Cold Area. Soil and Fertilizer Sciences in China, 3, 41-44 (in Chinese with English
Abstract).
6. El-Shikha, D.M., Barnes, E.M., Clarke, T.R., Hunsaker, D.J., Haberland, J.A., Pinter Jr., P.J., Waller, P.M. and Thompson,
T.L. (2008) Remote Sensing of Cotton N Status Using the Canopy Chlorophyll Content Idex (CCCI). American Society of
Agricultural and Biological Engineers, 51, 73-82.
7. Li, L.L., Fang, W.P., Xie, D.Y., Ma, Z.B., Du, Y.F. and Zhang, D.L. (2010) Effects of N Application Rates on
Photosynthetic and Physiological Characteristics and Yield and Quality of Hybrid Cotton. Plant Nutrition and Fertilizer
Science, 16, 1183-1189 (in Chinese with English Abstract).
8. Wang, F.Y., Wang, K.R., Li, S.K., Chen, B. and Chen, J. (2010) Estimation of Chlorophyll and N Contents in Cotton
Leaves Using Digital Camera and Imaging Spectrometer. Acta Agronomica Sinica, 36, 1981-1989.
9. Hao, J.J., Liu, H.M., Ma, Q.X., Cui, X.W., Yu, J.W., Jia, X.H. and Gao, J.S. (2011) Genetic Effects and Diagnosis of
Premature Senescence of Leaf in Upland Cotton. Acta Agronomica Sinica, 37, 389-396 (in Chinese with English Abstract).
http://dx.doi.org/ 10.3724/SP.J.1006.2011.00389
10. Wood, C.W., Tracy, P.W., Reeves, D.W. and Edmisten, K.L. (1992) Determination of Cotton N Status with a Hand-Held
Chlorophyll Meter. Journal of Plant Nutrition, 15, 1435-1448. http://dx.doi.org/ 10.1080/01904169209364409
11. Johnson, J.R. and Saunders, J.R. (2003) Evaluation of Chlorophyll Meter for N Management in Cotton. Annual Report
2002 of the North Mississippi Research and Extension Center. Mississippi Agriculture and Forestry Experiment Station
Bulletin, 398, 162-163.
12. Cetin, K., Emine, K., Remzi, E. and Oktay, G. (2009) Correlations and Path Coefficient Analysis between Leaf
Chlorophyll Content, Yield and Yield Components in Cotton (Gossypium hirsutum L.) under Drought Stress Conditions.
Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 37, 241-244
13. Li P., Dong, H., Liu, A., Liu, J., Sun, M., Wang, G., Zhang, S., Li, Y. and Mao, S. (2014) Diagnosis of Premature
Senescence of Cotton Using SPAD Value. Agricultural Sciences, 5, 992-999. doi:10.4236/as.2014.511107.
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