The Asian Journal of Horticulture

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Production Potential of [Glycine max (L.) Merrill] under Different Weed Management Practices


Affiliations
1 Department of Agriculture, Bhagwant University, Ajmer (Rajasthan), India
2 Department of Agricultural Biotechnology, Bhagwant University, Ajmer (Rajasthan), India
     

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The results of experiment reveal that pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30 DAS resulted the lowest density of monocot (3.41m-2), dicot (3.15m-2) and total weeds (4.59m-2) 50DAS compared to weedy check (6.80, 6.01 and 9.05am-2), respectively. Integration of pre-emergence herbicides with hand weeding or their sequential use with post-emergence herbicides was found significantly superior in controlling the weed density 50DAS compared to their corresponding application alone. All the weed control treatments were also found significantly superior in reducing dry matter of monocot; dicot and total weeds compared to weedy check 75DAS. Minimum total weed dry matter 75DAS was observed under weed free (146kg ha-1) closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS (431.7kg ha-1) compared to weedy check (1884.5kg ha-1). Weed control efficiency 75DAS observed maximum under weed free treatment in which crop was kept weed free upto 50 days (92.18%) which is closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS (76.96%) and weed index was also recorded the lowest under pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS (3.17%). Uptake of N and P by weeds at harvest was found significantly lower with all the weed control treatments compared to weedy check. The minimum uptake of N (2.78kg ha-1) and P (0.40kg ha-1) was recorded with weed free treatment closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS with the respective uptake values as 8.17 and 1.18kg ha-1. All the weed control treatments significantly tended to increase plant height, dry matter accumulation, branches plant-1 and leaf area of soybean over weedy check. Weed free treatment recorded the highest plant dry matter (32.20g plant-1) at harvest closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS (31.05g plant-1) and two hand weeding (30.65g plant-1). Weed free treatment recorded maximum number of branch plant-1, number of pods plant-1, pod length and seed index which was closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS and these treatments were found statistically at par to each other in this regard. Weed free upto 50 days treatment resulted in maximum seed yield (1421kg ha-1) which was statistically at par with pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30 DAS (1376kg ha-1) and two hand weeding 15 and 30DAS (1321kg ha-1). A like seed yield, haulm yield (3100kg ha-1), biological yield (4521kg ha-1) and harvest index (31.43%) were also recorded maximum under weed free treatment which were closely followed by pendimethalin 0.75kg ha-1 PE + hand weeding 30DAS. The maximum uptake of total nitrogen (143.78kg ha-1) and phosphorus (15.63kg ha-1) by the crop was significantly more in weed free check closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS and these treatments were found statistically at par to each other in this regard and the minimum being recorded under weedy check with the respective value of 52.32 and 5.64kg ha-1. Both net return (Rs.29508 ha-1) and benefit cost ratio (2.38) were also obtained maximum under pre-emergent pendimethalin 0.75kg ha-1 + hand weeding 30DAS closely followed by two hand weeding 15 and 30DAS with the respective net return and BC ratio of Rs. 27244 and 2.26.

Keywords

CGR, RGR, LAI, NAR, DAS.
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  • Angiras, N.N. Rana, S.S. and Thakur, A.S. (2008). Evaluation of dose of some herbicides to manage weeds in soybean [Glycine max (L.) Merrill]. Indian J. Weed Sci., 40: 56-61.

  • Aron, D. (1949). Copper enzymes isolated chloroplasts, polyphenoloxidase in Beta vulgaris. Plant Physiol., 24: 1-15.

  • Black, C.A. (1965). Methods of soil analysis, Part II, American Soci. of Agroninc. Pub. No: 9 Madison WI. USA.

  • Bouyoucos, G.J. (1962). Hydrometer method improved for making particle size analysis of soils. Agron. J., 54: 464-465. http://dx.doi.org/10.2134/agronj1962.00021962005400050028x.

  • Brady, M. (1983). Criteria for representations of shape. In: Beck, J., Hope, B. and Kosenfeld, A. (Ed.) IIuman and Machine Vision New York: Academic Press, 39-84 pp.

  • Dhaker, S.C., Mundra, S.L. and Nepalia, V. (2010). Effect of weed management and sulphur nutrition on productivity of soybean. Indian J. Weed Sci., 42: 232-234.

  • Jackson, M.L. (1967). Soil chemical analysis. Prentice Hall of India, Pvt. Ltd., New Delhi, India, 498 p.

  • Jha, A.K. and Soni, M. (2013). Weed management by sowing methods and herbicide in soybean. Indian J. Weed Sci., 45: 250-252.

  • Kumar, M. and Das, T.K. (2008). Integrated weed management for system productivity and economics in soybean (Glycine max)-wheat (Teiticum aestivum) cropping system. Indian J. Agron., 36: 189-194.

  • Meena, D.S. and Jadon, Chaman (2009). Effect of integrated weed management on growth and yield of soybean (Glycine max). Curr. Adv. Agric. Sci., 1: 50-51.

  • Meena, D.S., Ram, Beldev, Jadon, Chaman and Tetarwal, J.P. (2011). Efficacy of imazethaypr on weed management in soybean. Indian J. Weed Sci., 43: 169-171.

  • Olsen, S.R., Cole, C.V., Watanabe, F.S. and Dean, L.A. (1954). Estimation of available P in soil by extraction with sodium bicarbonate. Circ. Irs Dep. Agric., 939.

  • Piper, C. S. (1950). Soil and plant analysis, The University of Adelaide Press, Adelaide, Australia, 368 p.

  • Priya, G., Thomas, Rajkannan, G. B. and Jayakumar, R. (2009). Efficacy of weeds control practices in soybean crop production. Indian J. Weed Sci., 41: 58-64.

  • Redford, P.J. (1967). Growth analysis formulae their use and abuse. Crop Sci., 7: 171.

  • Richards, L.A. (1968). Diagnosis and improvement of saline and alkaline soils. Hand Book No. 60, USDA, Washington, D.C., USA.

  • Singh, P., Nepalia, V. and Tomar, S.S. (2006). Effect of weed control and nutrient management on soybean (Glycine max) productivity. Indian J. Agron., 51: 314-317.

  • Singh P. and Kumar, R. (2008). Agro-economics feasibility of weed management in soybean grown in vertisols of southeastern Rajasthan. Indian J. Weed Sci., 40: 62-64.

  • Vyas, M.D. and Kushwah, S.S. (2008). Effect of cultural and chemical methods on growth and yield of soybean in Vindhynagar plateau of Madhya Pradesh. Indian J. Weed Sci., 40: 92-94.

  • Walkley, A. and Black, Z.A. (1947). Rapid titration method for organic carbon of soils. Soil Sci., 37: 29-32.

  • Watson D.J. (1947). Comparative physiological studies in the growth of field crops. I. Variation in net assimilation rate and leaf area between species and varieties, and within and between years. Annl. Botany, 11: 41-76.


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  • Production Potential of [Glycine max (L.) Merrill] under Different Weed Management Practices

Abstract Views: 187  |  PDF Views: 1

Authors

Manish Borana
Department of Agriculture, Bhagwant University, Ajmer (Rajasthan), India
Devendra Singh
Department of Agriculture, Bhagwant University, Ajmer (Rajasthan), India
Bhanwar Lal Jat
Department of Agricultural Biotechnology, Bhagwant University, Ajmer (Rajasthan), India

Abstract


The results of experiment reveal that pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30 DAS resulted the lowest density of monocot (3.41m-2), dicot (3.15m-2) and total weeds (4.59m-2) 50DAS compared to weedy check (6.80, 6.01 and 9.05am-2), respectively. Integration of pre-emergence herbicides with hand weeding or their sequential use with post-emergence herbicides was found significantly superior in controlling the weed density 50DAS compared to their corresponding application alone. All the weed control treatments were also found significantly superior in reducing dry matter of monocot; dicot and total weeds compared to weedy check 75DAS. Minimum total weed dry matter 75DAS was observed under weed free (146kg ha-1) closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS (431.7kg ha-1) compared to weedy check (1884.5kg ha-1). Weed control efficiency 75DAS observed maximum under weed free treatment in which crop was kept weed free upto 50 days (92.18%) which is closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS (76.96%) and weed index was also recorded the lowest under pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS (3.17%). Uptake of N and P by weeds at harvest was found significantly lower with all the weed control treatments compared to weedy check. The minimum uptake of N (2.78kg ha-1) and P (0.40kg ha-1) was recorded with weed free treatment closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS with the respective uptake values as 8.17 and 1.18kg ha-1. All the weed control treatments significantly tended to increase plant height, dry matter accumulation, branches plant-1 and leaf area of soybean over weedy check. Weed free treatment recorded the highest plant dry matter (32.20g plant-1) at harvest closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS (31.05g plant-1) and two hand weeding (30.65g plant-1). Weed free treatment recorded maximum number of branch plant-1, number of pods plant-1, pod length and seed index which was closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS and these treatments were found statistically at par to each other in this regard. Weed free upto 50 days treatment resulted in maximum seed yield (1421kg ha-1) which was statistically at par with pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30 DAS (1376kg ha-1) and two hand weeding 15 and 30DAS (1321kg ha-1). A like seed yield, haulm yield (3100kg ha-1), biological yield (4521kg ha-1) and harvest index (31.43%) were also recorded maximum under weed free treatment which were closely followed by pendimethalin 0.75kg ha-1 PE + hand weeding 30DAS. The maximum uptake of total nitrogen (143.78kg ha-1) and phosphorus (15.63kg ha-1) by the crop was significantly more in weed free check closely followed by pre-emergence application of pendimethalin 0.75kg ha-1 + hand weeding 30DAS and these treatments were found statistically at par to each other in this regard and the minimum being recorded under weedy check with the respective value of 52.32 and 5.64kg ha-1. Both net return (Rs.29508 ha-1) and benefit cost ratio (2.38) were also obtained maximum under pre-emergent pendimethalin 0.75kg ha-1 + hand weeding 30DAS closely followed by two hand weeding 15 and 30DAS with the respective net return and BC ratio of Rs. 27244 and 2.26.

Keywords


CGR, RGR, LAI, NAR, DAS.

References