WEL COMETO

THESIS PRESENTATION

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

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). 

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

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.

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

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

2.4m

5m

N

39 m

2 m

2 m

Layout plan of the experimentLayout plan of the experiment

15 m

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

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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