Experiment code 18.2.4.48
Experiment Title Effect of different levels of saline water and mulching on drip irrigated summer okra under coastal salt affected soils
Research Type AICRP Trials
Experiment Background In coastal areas of Gujarat, it is becoming increasingly difficult to obtain good quality irrigation water for agricultural production. Mismanagement and incorrect irrigation practices have led to salinity problems in these areas, especially where natural drainage conditions are poor. Further, ingress and incursion of sea water has led to deterioration of ground water quality. Use of poor-quality water for irrigation has led to accumulation of salts in the soil as the water evaporates or is used by plants. Water logging and soil salinization development in coastal and canal irrigated areas in Gujarat coupled with poor irrigation efficiency. Okra is a major vegetable crop cultivated in about 0.85 lakh ha area with productivity of 11.97 t/ha in Gujarat (2020-21). Although salinity stress has been reported to adversely affect the growth and productivity of okra, it is considered a semi-tolerant or moderately tolerant crop compared with many other vegetable crops. Fifty percent reduction in fresh fruit yield of okra has been reported at 6.7 dS/m. Looking to these situations, the present study envisages the need for a better water use micro irrigation and mulch to mitigate the above said situations hence this experiment has been proposed.
Experiment Group Natural Resource Management
Unit Type (01)RESEARCH UNIT
Unit (38)SOIL AND WATER MANAGEMENT RESEARCH UNIT (NAVSARI)
Department (221)Coastal Soil Salinity Research Station Danti- Umbharat
BudgetHead (311/2027/0A)311/26/REG/00060
Objective
  • To study the effect of saline irrigation water and mulching on yield of okra
  • To study the impact of saline irrigation water and mulching on soil chemical properties
Season Summer
Location Unit Type (01)RESEARCH UNIT
Location Unit (38)SOIL AND WATER MANAGEMENT RESEARCH UNIT (NAVSARI)
Location Department (221)Coastal Soil Salinity Research Station Danti- Umbharat
Plot No Juni Danti
PI Name (NAU-EMP-2007-000573)SANJAY LALCHAND PAWAR
PI Email slp_swm@nau.in
PI Mobile 9428065269
Year of Approval 2021
Commencement Year 2022
Completion Year 2024
Design of Experiment

Large plot (CRB factorial)

Crop Spacing (cm x cm)

Paired row 30 (2 rows) x 30 cm: 60 cm

Kharaif  Rice: 20 cm x 15 cm

Gross Plot (m x m) 5.4 m x 13.5 m b. 6 paired rows of okra/plot) c.
Net Plot (m x m) Sampling area: 2.4 x 0.9 m (16 plant/ repetitions)
Total Experiment Area (m2) 2387 m2
Plot History Last Three Year

Kharif rice -  fellow

Initial Soil Sample Analysis Report
Initial Soil Sample Analysis Report Attachment Attachment Not Available!
Layout Plan
Layout Plan Attachment Attachment Not Available!
Treatment

Main plot: Salinity levels of IW

I1 : Best Available Water (BAW)

I2 : 2 dS/m

I3 : 4 dS/m

I4 : 6 dS/m

Subplots: Mulching

M1: No mulch

M2: Sugarcane trash mulch (@ 5 t/ha)

M3: BPM (50 µ thickness with 50% coverage)

Note:

-     Rice crop will be taken during subsequent kharif season after okra

-     Drip irrigation system will be operated at 0.8 PEF on alternate days.

-         Recommended common dose of biocompost @ 10 t/ha will be applied before sowing okra.

Treatment Attachment Attachment Not Available!
(NAU-EMP-2007-000573) SANJAY LALCHAND PAWAR slp_swm@nau.in 9428065269 27-01-2023
Active
(NAU-EMP-1989-000475) NANALAL GANGDAS SAVANI ngs_swm@nau.in 9909666226 27/01/2023
Active
(NAU-EMP-1986-000478) JAYESHBHAI MAGANBHAI PATEL jmp_swm@nau.in 9429057370 27/01/2023
Active
(NAU-EMP-2016-000472) VIRALKUMAR ARVINDBHAI PATEL viralp020@nau.in 8980057374 26/02/2024
Active
Okra GAO 5
Rice GNR-5