An Asian Journal of Soil Science

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Dry Matter Production and Yield of Bt Cotton as Influenced by Available Phosphorus in Vertisols


Affiliations
1 Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Dharwad (Karnataka), India
     

   Subscribe/Renew Journal


A field survey was conducted in Bt cotton growing Vertisols of Dharwad district and totally ten villages (Bandiwad, Byahatti, Dattur, Hebsur, Ingalalli, Kiresur, Kusugal, Rottigwada, Siraguppi and Sulla) were selected. From each selected village, five Bt cotton growing farmers were identified and georeferenced soil samples were collected from 0-30 cm depth and analysed for available phosphorus and other parameters using standard procedures. Also quantity of phosphatic fertilizers addition by the farmers to the crop were collected. Dry matter production at both flowering, harvesting and yield obtained were recorded from each selected farmer field by crop cutting experiment. The results of the study indicatethat available phosphorus content varied from 15.5 to 39.50 kg ha-1 with an average value of 29.1 kg ha-1. The dry matter yield varied from 142.3 to 186.7 and 302.1 to 347.7 g plant-1 at flowering and at harvest, respectively. The highest dry matter production was in soils of Bandiwad and the lowest in soils of Siraguppi. The average yields of Bt cotton in farmer’s fields in different villages of Dharwad district varied from 976 to 1092 kg ha-1. The highest and lowest yields were recorded in soils of Bandiwad and Siraguppi, respectively. However, the dry matter production and average yields of Bt cotton in different villages followed the order: Bandiwad > Rottigwad >Kusugal >Hebsur >Dattur >Byahatti > Sulla > Kiresur >Ingalalli>Siraguppi. The soils of Bandiwad village had low P (< 33.50 kg/ha) status thus, they responded well to applied phosphatic fertilizers compared to other villages and resulted in higher dry matter and yield of Bt cotton. Lower dry matter production at both flowering and harvesting and also yield in Siraguppi village may be due to its high available phosphorus status (> 33.50 kg/ha).

Keywords

Available Phosphorus, Bt Cotton, Dry Matter, Yield.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Anonymous (2003). Newsletter of PPIC.

  • Kanwar, J. S. (1986).Crop production techniques and fertilizer management with special reference to phosphate fertilizer in rainfed area : ICRISAT experience. Pages ks/1(b)-1-ks/1(b)-44. In : Proceedings of the rainfed agriculture in Southern Asia. Institute Mondial du Phosphate (IMPHOS) and Fertilizer Association of India. 23-25 Jan. 1986, New Delhi (India).

  • Khistaria, M.K., Patel, R.B. and Patel, J.C. (1980). Effect of different levels of nitrogen and phosphorus on the yield of cotton. Indian J. Agron., 25 (2) : 315-317.

  • Malik, M.N.A., Makhaum, M.J. and Chaudary, F.I. (1992). Influence of phosphorus fertilization on crop growth, seed cotton yield and fibre quality. Pakistan. J. Sci. Industrial Res., 35 (7-8) : 288-290.

  • Nehra, P.L. and Yadav, P.S. (2011). Agronomic studies on promising arboreum hybrid in relation to spacing and phosphorus levels in canal command area of north-west Rajasthan. J. Cotton Res. Dev., 25 (2) : 221-223.

  • Puri, Girish and Jaipurkar, S. A. (2000).Nutrient requirement, utilization and economic phosphorus (P) requirement for G. hirsutum cotton in Vertisols. J. Indian Soc. Cotton Improv., 25 (3) : 153-160.

  • Sharma, B.L. and Rajat, D.E. (1974). Phosphorus fertilization of wheat in relation to phosphorus status of soil. J. Indian Soc. Soil Sci., 22 (2) : 130-133.

  • Singh, B. and Rana, D.S. (1979). The critical limit of available phosphorus for predicting response of groundnut to applied fertilizer phosphorus. J. Indian Soc. Soil. Sci., 27 (2) : 146- 149.

  • Singh, J. and Mannikar, N.D. (2000). Response of cotton to applied phosphorus over different soil phosphorus fertility gradients in rainfed Vertisol. J. Cotton Res. Dev., 14 : 55-58.

  • Solankey, B.S., Ray, N. and Ved, S.C. (1994). Phosphate requirement of hybrid cotton (JKH. 1) under rainfed conditions. J. Indian Soc. Cott. Improv., 19(2) : 165-169.

  • Srinivasulu, K., Hema, E., Narayana, N.V.V., Prasad, S. D. and Rao, N.H.P. (2007).Agronomic evaluation of Bt hybrids ( NCS207) in Vertisols of Andhra Pradesh under rainfed condition. J. Cotton Res. Dev., 21(2) : 55 -58.


Abstract Views: 199

PDF Views: 0




  • Dry Matter Production and Yield of Bt Cotton as Influenced by Available Phosphorus in Vertisols

Abstract Views: 199  |  PDF Views: 0

Authors

S. H. Ramya
Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Dharwad (Karnataka), India
N. S. Hebsur
Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Dharwad (Karnataka), India

Abstract


A field survey was conducted in Bt cotton growing Vertisols of Dharwad district and totally ten villages (Bandiwad, Byahatti, Dattur, Hebsur, Ingalalli, Kiresur, Kusugal, Rottigwada, Siraguppi and Sulla) were selected. From each selected village, five Bt cotton growing farmers were identified and georeferenced soil samples were collected from 0-30 cm depth and analysed for available phosphorus and other parameters using standard procedures. Also quantity of phosphatic fertilizers addition by the farmers to the crop were collected. Dry matter production at both flowering, harvesting and yield obtained were recorded from each selected farmer field by crop cutting experiment. The results of the study indicatethat available phosphorus content varied from 15.5 to 39.50 kg ha-1 with an average value of 29.1 kg ha-1. The dry matter yield varied from 142.3 to 186.7 and 302.1 to 347.7 g plant-1 at flowering and at harvest, respectively. The highest dry matter production was in soils of Bandiwad and the lowest in soils of Siraguppi. The average yields of Bt cotton in farmer’s fields in different villages of Dharwad district varied from 976 to 1092 kg ha-1. The highest and lowest yields were recorded in soils of Bandiwad and Siraguppi, respectively. However, the dry matter production and average yields of Bt cotton in different villages followed the order: Bandiwad > Rottigwad >Kusugal >Hebsur >Dattur >Byahatti > Sulla > Kiresur >Ingalalli>Siraguppi. The soils of Bandiwad village had low P (< 33.50 kg/ha) status thus, they responded well to applied phosphatic fertilizers compared to other villages and resulted in higher dry matter and yield of Bt cotton. Lower dry matter production at both flowering and harvesting and also yield in Siraguppi village may be due to its high available phosphorus status (> 33.50 kg/ha).

Keywords


Available Phosphorus, Bt Cotton, Dry Matter, Yield.

References