On Farm Trial


An On-Farm Trial aims at testing a new technology or an idea in farmer’s fields, under farmers’ conditions and management, by using farmer’s own practice as control. It should help to develop innovations consistent with farmer’s circumstances, compatible with the actual farming system and corresponding to farmer’s goals and preferences.


Year 2015-16

Sl. No.

Title of OFT

Problem Diagnosed

Name of Technology Assessed

Crop/Cropping system/ Enterprise

No. of Trials

Results of Assessment/ Refined

Feedback from the farmer

Feedback to the Researcher

B.C. Ratio
(if applicable)

1

Integrated Nutrient management in Chilli

Deterioration of soil health due to injudicious application of chemical fertilizers as well as non adoption of INM practices

Vermicompost @ 1.0t/ha incubated with Biofertilizers (Azospirillum,  Azotobacter  and PSB @ 1% on dry wt. basis) for 15 days  and mixed with 50% RD of fertilizers
RD=  120:50:50  kg N:P2O5: K2O per ha

Chilli var. Tejaswini

2

Demo
Plant ht: 52.6 cm
No. of branches/plant: 16
No. of fruits/plant:59 no
Yield: 54.58 q/ha
Check:
Plant ht: 57.2 cm
No. of branches/plant: 18.6
No. of fruits/plant:48.2 no
Yield: 44.63  q/ha

Farmers are satisfied with the performance of the technology

Demonstration is conducted during 2015-16 in different locations of the district

Demo: 4.39
Check: 4.43

2

Integrated Nutrient management in Chilli

Deterioration of soil health due to injudicious application of chemical fertilizers as well as non adoption of INM practices

Vermicompost @ 1.0t/ha incubated with Biofertilizers (Azospirillum,  Azotobacter  and PSB @ 1% on dry wt. basis) for 15 days  and mixed with 50% RD of fertilizers
RD=  120:50:50  kg N:P2O5: K2O per ha

Chilli var. Tejaswini

3

Crops are in flowering stage

 

 

 

3

Organic cultivation of Okra

Injudicious use of Chemicals in early vegetables

Rock phosphate, FYM and Vermicompost applied @ 320kg/ha, 5t/ha and 1 t/ha, respectively before planting. Seed treatment with Azotobacter and PSB @ 7.5 g each for 100 g of seeds.

Okra var. Arka Anamika

2

Demo:
Plant ht: 1.50m
No. of fruits/plant:11 no
Yield: 149.25 q/ha
Check:
Plant ht: 1.80m
No. of fruits/plant:13 no
Yield: 157.5 q/ha

The framers are satisfied with the production of the crop

The technology can be adopted in large scale in the district as it is suitable for the district

B:C ratio(Demo):2.90
B:C ratio (Check): 3.08

4

Integrated Nutrient Management in Toria var TS- 38

Ignorance about use of biofertilizers in Toria as a cheap and                                    efficient source of nutrients

Seed coating with Bio fertilizers (Azotobacter and PSB @ 40 g each/kg of seed) along with 75% recommended dose of inorganic fertilizers NP and full K. RD: 40:35:15 kg N: P2O5: K2O/ ha Seed rate : 7.5 kg/ha

Toria

3

Demo:
Plant height: 1.22 m
No. of siliqua / plant: 22
No. of seeds / siliqua: 176.67
Yield:  11.21 q/ha
Check:
Plant height: 1.03 m
No. of siliqua / plant: 15.67
No. of seeds / siliqua: 122.25
Yield:  10.5 q/ ha

Farmers are satisfied with the performance of the technology

Technology is suitable for the district

Demo: 1.60
Check: 1.42

5

Improved method of vermicomposting for efficient conversion  of  rice stubble  in to good quality compost

i. Slow  decomposition  &  low nutrient content in rice stubble based composting
ii. Poor utilization of rice stubbles

1.  Substitution of weed biomass by 20% with rice stubbles
2. Initial release of earthworm= 750 g/ tank

Vermicompost

3

Demo:
Yield of compost: 6.4 q/ harvest , Number of Earthworm=  14921/ harvest
Check:
Yield of compost: 6.6 q/ harvest , Number of Earthworm=  14008/ harvest

Farmers are satisfied with the performance of the technology

Technology is suitable for the district

Demo: 1.83
Check: 1.89

6

OFT on newly developed submergence tolerance varieties Ranjit sub 1 and Bahadur sub 1

Lack of Submergence tolerant varieties

Varietal evaluation

Sali Paddy

1

Days of Submergence: 9 days after 15 days of transplanting
Yield :
Ranjit Sub 1: 63.3q/ha
Bahadur Sub 1: 52.8q/ha
Swarna Sub 1 (Check): 63.3q/ha

Farmers are satisfied with the performance of the variety

Trial is to be conducted in the ideal situation

Ranjit Sub 1: 2.18
Bahadur Sub 1: 1.82
Swarna Sub 1: 2.18 (check)

7

OFT on newly developed submergence tolerance varieties LPR 1130 and 1103

Lack of Submergence tolerant varieties

Varietal evaluation

Sali Paddy

1

Days of Submergence: 9 days after 15 days of transplanting
Yield:
LPR-1130: 55.4q/ha
LPR-1103:   60.8q/ha
Ranjit: 63.2q/ha (check)

Farmers are satisfied with the performance of the variety

 To give the conclusion remark the trial to be conducted in ideal situation

LPR-1130: 1.93
LPR-1103:   2.11
Ranjit: 2.19 (check)

8

Control of False smut disease of rice

Yield loss due to False smut disease

Spraying of Propaconazole 25EC once at 50% panicle emergence stage

Boro paddy

2

Disease incidence:
Tech.: nil
Check: 1.33%
Yield=
Tech.: 48.0q/ha
Check: 44.4q/ha

Farmers are satisfied with the performance of the technology

The technology is effective to control the diseases

Tech: 1.66
Check: 1.54

9

Control of False smut disease in Sali paddy

False smut disease in rice cultivation is emerging problem in Sali paddy var. Gitesh cultivation.

Spraying of Propaconazole 25EC once at 50% panicle emergence stage

Sali paddy

3

Disease incidence:
Tech.: nil
Check: 1.67%
Yield=
Tech.: 53.3q/ha
Check: 50.3q/ha

Farmers are satisfied with the performance of the technology

The technology is effective to control the diseases

Tech: 1.97
Check: 1.86

10

Validation on management of Meloidogyne incognita in Brinjal

Lower yield due to nematode problem in vegetables

Nursery treatment with carbofuran @0.3g a.i./sq. m + neem cake  @ 500 kg/ha in the field before transplanting

Brinjal

3

Nematode infestation
Tech: 0.67%
Check: 3.33
No. of gall per plant:
Tech: 6
Check(infrcted):
14/plant

 

 

Harvesting is in progress

11

Stage wise requirement of N & K in banana

Imbalanced untimely  use of fertilizers leading to low                            productivity

60%N at planting to 5 months stage, 20% N at shooting and 20% N at last hand opening to 1 month before harvest.
40% of K at shooting to last hand opening and 60% K at last hand opening to one month before harvest.
The phosphatic fertilizer @ 33 g per plant is applied in 3rd month after planting.

Banana

2

Demo:
Average No of hands/bunch: 7 Avg. No. of fruits/hand:15 no
Avg. wt. of 10 hands : 10.20 kg

Yield: 22 t/ha
Check:
Average No of hands/bunch: 6 Avg. No. of fruits/hand:12 no
Avg. wt. of 10 hands : 5.20 kg

Yield: 15 t/ha

 

The framers are satisfied with the production of the crop

 

B:C ratio(Demo): 8.36
B:C ratio (Check): 3.56

12

Stage wise requirement of N & K in banana

Imbalanced untimely  use of fertilizers leading to low                            productivity

60%N at planting to 5 months stage, 20% N at shooting and 20% N at last hand opening to 1 month before harvest.
40% of K at shooting to last hand opening and 60% K at last hand opening to one month before harvest.
The phosphatic fertilizer @ 33 g per plant is applied in 3rd month after planting.

Banana

2

Crop is in vegetative stage

13

Organic cultivation of Okra

Injudicious use of Chemicals in early vegetables

Rock phosphate, FYM and Vermicompost applied @ 320kg/ha, 5t/ha and 1 t/ha, respectively before planting. Seed treatment with Azotobacter and PSB @ 7.5 g each for 100 g of seeds.

Okra var. Arka Anamika

2

Crop is in flowering stage

14

Supplementation of minerals mixtures (AAUVETMIN) to goats for improving growth and reproductive performances

Deficiency of mineral mixture leading to poor performance

AAUVETMIN

Goatery

6

Litter size in doe after treatment: 1.89/doe

Satisfied

More trial required

B:C=3.43

15

Year round fodder production through cultivation of Seteria grasses var. PSS- 1 in Dhemaji district

Non availability of quality green fodder

Setaria grass var. PSS-1

Fodder grass 

4

Yield: 81.0 t/ha

Farmers are satisfied with the performance of the technology

 

2.61

16

Introduction of Newly developed Improved dual purpose Poultry (Kamrupa 1)

Less availability of egg & meat

Kamrupa 1

Poultry

14

Birds are at growing stage