Efficacy of new herbicide in summer ground nut in saurashtr region
Transcript of Efficacy of new herbicide in summer ground nut in saurashtr region
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WEL COMETO
THESIS PRESENTATION
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Presented By : Mr. Daki Raju. N.
M.Sc. (Agri.) in Agronomy student, College of Agriculture,
JAU, Junagadh
Major Guide: Dr. B.K. SagarkaProfessor & Head
Dept. of Agronomy
Minor Guide: Dr. N.M. Zalawadia
Professor,(P)Dept. of Agril. Chemistry
and Soil Science
Title of research work
Member:Dr. V. D. Khanpara
Ex. Professor & Head,Dept. of Agronomy,
College of Agriculture,
JAU, Junagadh.
MEMBER:Dr. S.M. Upadhyay
Professor and Head,Dept. of Agril.
Statistics,College of Agriculture,
JAU, Junagadh
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Groundnut (Arachis hypogaea L.) is an annual legume crop,
belongs to family Leguminoseae. It is also known as peanut,
earthnut, monkeynut and goobers. It is world’s the largest source
of edible oil and ranks 13th among the food crops as well as 4th
most important oil seeds crops of the world (Ramanathan, 2001).
Groundnut is grown in 11 states and accounts for total area of
6.7 million hectares with total production 6.6 million tons having
average productivity of 988 kg /ha (Anon., 2009). Out of the total
groundnut area in India, 80% area is confide to 5 states viz.
Gujarat, Andhra Pradesh, Tamilnadu, Karnataka and
Maharashtra, which accounts for 84% of total production.
Gujarat ranks first with the production of 17.57 lakh tons and
growth in area of 18.23 lakh hectares with a average productivity
of 964 kg/ha (Anon., 2009-2010).
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India has low productivity and high cost production
Among the different agronomic practices, weed menace is one of
the serious bottlenecks for increasing the yield. Weed infestation
is depending on the weed intensity, the yield reduction in
groundnut may be as 76% (Mohanty et al., 2008). In view of slow
growth habit of the crop, mechanical control of weeds becomes
difficult due increasing cost and scarcity of labour. Under these
situations the chemical control of weeds is effective and
economical in the initial stages of growth.
Now a day, some important new herbicide molecule come in
the market for the control of monocots & dicots weed. Scientific
information on individual and integrated effects on weed
management in this crop is meager for this region.
Backround of research
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1) To evaluate the efficacy of different treatments for control of weeds in summer groundnut.
2) To study the effect of different treatments on yield attributes and yield of summer groundnut.
3) To find out the economics of different treatment.
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Treatment Details:
T1: Pendimethalin @ 0.9 kg/ha PE + 1 HW at 40 DAST2: Oxyfluorfen @ 0.240 kg/ha PE +1 HW & IC at 40DAST3: Quizalofop-ethyl @ 40 g/ha POE at 20 DAST4: Quizalofop-ethyl @ 40 g/ha POE at 20 DAS + 1 Hw at 45
DAST5: Oxdiaragyl @ 90 g/ha POE at 20 DAS T6: Oxdiaragyl @ 90 g/ha POE at 20 DAS + 1 HW at 45 DAS T7: Imazethapyr @ 50 g/ha POE at 20 DAS T8: Imazethapyr @ 50 g/ha POE at 20 DAS + 1 HW at 45 DAS T9: Oxyfluorfen @ 0.240 kg/ha PE + Quizalofop-ethyl @ 40 g/ha POE at 30 DAS T10: Oxyfluorfen @ 0.240 kg/ha PE + Oxdiaragyl @ 90 g/ha POE
at 30 DAS T11: Weed FreeT12: Weedy Check
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1. Location: Instructional farm,
Department of Agronomy,
College of Agriculture,
J. A. U., Junagadh.
2. Year and season of experiment: Summer -2011.
3. Statistical design: Randomized Block Design
4. No. of replications: Three (3). 5. Crop and variety: Groundnut, Gujarat Groundnut-6,(G.G.-6) 6. Seed Rate: 120kg/ha
7. Spacing: 30 x 10 cm
8. Method of sowing: Drilling
9. Fertilizer: 25 – 50 – 0, N P K, kg/ha 10. Plot Size:
a)Gross Plot Size: 5.0m x 2.4m b)Net Plot Size: 4.0m x 1.80m
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2.4m
5m
N
39 m
2 m
2 m
Layout plan of the experimentLayout plan of the experiment
15 m
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A) Growth parameters
1) Plant population Initial and at harvest2) Plant height at 30 DAS, 60 DAS and at harvest3) No. of branches/ plant4) Days to 50% flowering
B ) Yield attributes and yield5) No. of mature and immature pods/ plants6) pod and haulm yield(kg/ha)7) weight of 100 kernels8) Shelling (%)9) Harvest index (%)C ) Quality parameters11) Oil content (%)D) Weed studies12)Species wise weed count at 30, 60 DAS & at harvest.13)Dry weight of weeds at harvest. 14)Weed index.(%)15) Weed control efficiencyE) Economic Evaluation11)Cost of Cultivation ( /Ha)12)Gross Return ( /Ha)13)Net Return ( /Ha)14)Benefit: Cost Ratio
A) Growth parameters
1) Plant population Initial and at harvest2) Plant height at 30 DAS, 60 DAS and at harvest3) No. of branches/ plant4) Days to 50% flowering
B ) Yield attributes and yield5) No. of mature and immature pods/ plants6) pod and haulm yield(kg/ha)7) weight of 100 kernels8) Shelling (%)9) Harvest index (%)C ) Quality parameters11) Oil content (%)D) Weed studies12)Species wise weed count at 30, 60 DAS & at harvest.13)Dry weight of weeds at harvest. 14)Weed index.(%)15) Weed control efficiencyE) Economic Evaluation11)Cost of Cultivation ( /Ha)12)Gross Return ( /Ha)13)Net Return ( /Ha)14)Benefit: Cost Ratio
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Based on the results of the one year field experimentation, it seems quite logical to conclude that potential production, profit and economic weed management in summer groundnut under South Saurashtra Agro-climatic Zone can be achieved by conventional method i.e. weed free condition with 4 HW at 20, 40, 60 and 80 DAS where from labours are easily available. Alternatively integrated weed control method including Pendimethalin @ 0.900 kg ha-1 as pre-emergence with 1 HW + IC at 40 DAS, or Oxyfluorfen @ 0.240 kg ha-1 PE +1 HW & IC at 40 DAS can be adopted where farm labour is scarce.
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