Asian Journal of Bio Science

V. K. Verma ¹, Sanjai Chaudhry ¹, Vishram Singh ¹, A. K. Srivastava ¹, Mohd. Aslam ¹, Sohanveer Singh ¹

Affiliations
1 Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (U.P.), IN

Abstract

A field experiment was conducted during Rabi season of 2010-11 at Students' Instructional Farm of C.S Azad University of Agriculture and Technology, Kanpur. six crop biomass viz., mustard, field pea, sorghum, maize, rice and wheat straws were incorporated in soil before sowing and their allelopathic potential was compared with weed free and unweeded treatments and analysed on germination and growth of weeds in wheat crop. The crop growth parameters, yield attributes, yield and economics of wheat were also computed. The results obtained shown that mustard straw, sorghum straw and maize straw were more effective to suppress weed germination and growth. The application of mustard straw before sowing registered maximum grain yield of wheat (42.0 q/ha) followed by sorghum straw (41.33 q/ha), maize straw (40.66 q/ha), field pea straw (38.75 q/ha), wheat straw (35.83 q/ha), paddy straw (35.66 q/ha) and minimum grain yield (33.58 q/ha) was noticed in unweeded control treatment. The incorporation of mustard straw, sorghum straw and maize straw registered 25.07 per cent, 23.03 per cent and 21.08 per cent, respectively more grain yield than unweeded control treatment. Allowing weed growth though out crop growth period in unweeded control treatment caused on an average 31.26 per cent reduction in grain yield of wheat i.e. 44.08 q/ha of wheat variety UP 2338 in control in plain zone of Uttar Pradesh.

Keywords

Allelopathic, Crop Biomass, Weeds, Wheat.

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Sanjai Chaudhry ¹, V. K. Verma ¹, Vishram Singh ¹, Ram Pyare ¹, Avdesh Kumar ¹

Affiliations
1 Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (U.P.), IN

Abstract

A field experiment was conducted at Kanpur (Uttar Pradesh) during Rabi 2010-11 to evaluate the performance of 3 field pea varieties at different row spacings with uniform plant spacing 10 cm within row. The results revealed that variety 'indra' gave highest of 18.84 q/ha grain yield, 20.70 q/ha straw yield, Rs. 18008/ha net return and 0.76 B:C ratio. It was followed by variety 'Sapna', while variety 'Jai' remained at bottom Among row spacings, 15 cm recorded highest values of 19.20 q/ha grain yield, 20.89 q/ha straw yield and Rs, 17695/ha net return. Benefit : cost ratio was computed highest of 0.75 in 20 cm row spacing. The row spacing of 15 cm and 20 cm were found at par in all respect, but 25 cm row spacing performed significantly poorest. Varieties x row spacing interaction was not found significant. However, the combination of variety 'indra' and 15 cm row spacing gave highest seed yield of 19.68 q/ha and earned maximum net return of rs. 18749/ha.

Keywords

Field Pea, Varieties, Row Spacing, Yield, Economics.

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Sanjai Chaudhry ¹

Affiliations
1 Department of Agronomy, C.S. Azad University of Agriculture and Technology, Kanpur (U.P.), IN

Abstract

A field experiment was conducted at Oilseeds Research Farm, Kalyanpur, Kanpur during to consequtive years of 2000-01 and 2001- 02 in loam soil under irrigated conditions. Five nitrogen doses (0, 30, 60, 90 and 120 kg/ha) were tested for three varieties (Neelum, Garima and LCK 8657) in split plot design with nitrogen levels in main plots. Results showed that linseed varieties responded significantly upto 60 and 90 kg. N/ha during first and second year of study, respectively. Varietal differences were found significant only during second year when variety LCK 8657 yielded significantly maximum seeds. Interaction of variety × nitrogen was not found to be significant.

Keywords

Nitrogen, Promising Linseed Varieties.

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Sanjai Chaudhry ¹, J. P. S. Rathi ¹, Om Pal Singh ¹, D. Kumar ¹

Affiliations
1 Department of Agronomy, C.S. Azad University of Agriculture and Technology, Kanpur (U.P.), IN

Abstract

A field experiment was conducted during the winter season of 2006-07 to study the effect of tillage practices (Zero and conventional tillage) and six weed control methods against weedy check on yield, weed dynamics and economics of wheat grown in rice-wheat sequence. Zero tillage increased the weed intensity by 20.3% reduced the grain yield by 4.2% net profit by 2.8% compared to conventional tillage. Among weed control methods, Pendimethalin @ 500 g.a.i./ha + one hand weeding being at par with 2, 4-D@ 500 g a.i./ha + Isoproturon @ 500 g a.i./ha produced significantly higher grain and straw yield than other weed control methods. These yields were attributed to higher growth and yield attributes in above weed control methods. The application of pendimethalin @ 500 g a.i./ha + one hand weeding showed highest weed control efficiency of 76.89% and gross income of Rs. 58864/ha. However, net profit was maximum of Rs. 35675/ha under application of 2,4-D @ 500 g a.i./ha + Isoproturon @ 500 g a.i./ha closely followed by pendimethalin @ 500 g a.i./ha + one hand weeding with Rs. 35130/ha. Single application of 2,4-D or Isoproturon or Pendimethalin at recommended doses reduced the yields and profit than combined application of any two herbicides at half of the recommended dose.

Keywords

Tillage, Wheat, Herbicides, Weeds, Yield, Economics.

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