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Cotton Research Station

 

Cotton Research Station
Junagadh Agricultural University
Junagadh-362 001 (Gujarat)

(Year of Establishment : 1962)
 
Cotton is an important cash crop next to groundnut. Gujarat is the single largest cotton producer state with 36 per cent (101 lakh bales) of the total national production from the area about 25.00 lakh hectares. Saurashtra account 65 % area of the state and contributes 68 % in the total production of the state. Average lint production of the Saurashtra is 754 kg/ha as against 615 kg/ha of the state (2007-08). Among the different districts of Gujarat, Surendranagar ranks first in total cotton production of the state (22 %), followed by Rajkot (16.6 %), Bhavnagar (15.8 %), Vadodara (7.7 %) and Amreli (7.2 %). Thus cotton is very important crop of the Saurashtra region for sustainable agricultural production.
Department Overview :
Regional Cotton Research Station was established in the year 1962 where, research on extra long staple cotton (G. hirsutum) was initiated with help of  I.C.C. Further development of station was done with the help of I.C.A.R. (Indian Council of Agricultural Research) during 1967 through sanction of “All India Co-ordinated Cotton Improvement Project” (AICCIP, B.H. 2009) Where initial project has been merged with new project. Since research on plant improvement, Agronomical practices, Entomological and Plant Pathological aspect on cotton is under progress.
Moreover, considering needs of farmer of Gujarat for pure seed (higher stage) of cotton varieties, Gujarat Government has strengthened the station by approval of project for production of nucleus, breeder and foundation seeds of cotton. Further improvement of station is made by provision of required contingencies expenditure under the scheme “To Establish a Center of Excellence for Cotton Research (B.H. 10009)” at Junagadh in 1980.
As more and more GM (Genetically Modified) crops are being released for field testing and commercialisation. India has a well defined regulatory mechanism for development and evaluation of genetically modified organisms (GMOs) including GM crops and the products thereof. Bt cotton the first GM crop being commercially cultivated in India. Therefore, “Strengthening of Research on Genetically Modified Cotton at Junagadh (B.H. 10582)” is sanctioned by Govt. of Gujarat in the year 2008.
For the enhancement of quality line production for expert purpose and considering the need of textile industries and cultivars, cotton research must be started in Surendranagar district for future demand. Also a slogan was given by our Hon'ble chief minister as " Farm to Fabric, Fabric to Fashion, Fashion to Foreign". Therefore, "Establishment of Bt cotton research centre at Kukada(Surendranagar district)" B.H. 10590 is sanctioned by Govt. of Gujarat in the year 2010

ખેડૂત મિત્રોએ કપાસની ખેતીને લગતા પ્રશ્નોના નિવારણ માટે નીચે દર્શાવેલ વૈજ્ઞાનિકોનો રૂબરૂ અથવા ટેલિફોનથી સંપર્ક કરવો :

ક્રમ
વૈજ્ઞાનિકનું નામ
મોબાઈલ નંબર અને ઈમેઈલ સરનામું
કપાસમાં ક્યા વિષયમાં નિષ્ણાંત
1
ડો. એલ.કે.ધડુક
સંશોધન વૈજ્ઞાનિક (કપાસ)
યુનિટ હેડ
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કપાસની જનરલ માહિતી
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સંશોધન વૈજ્ઞાનિક
(પ્લાન્ટ પેથોલોજી)
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કપાસના રોગ અને જીવાતો ખેતી પદ્ધતિ
 
 
 
 
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4
ડો. એમ.જી.વળુ
સહ સંશોધન વૈજ્ઞાનિક (પ્લાન્ટ બ્રીડીંગ)
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વાવેતર અંતર ખાતર અને નિંદામણ ખેતી પદ્ધિતી
6
પ્રો. એમ.વી.વરિયા
મદદનીશ સંશોધન વૈજ્ઞાનિક(એન્ટો)
 
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પ્રો. ડી.કે.ડાવરા,
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9427702124
કપાસના રોગ અને જીવાતો

Faculty Position :

Sr.
NAME
DESIGNATION
Qualification
B.H.
REMARK
1
Dr. L.K.Dhaduk
Res. Scientist
Ph. D. (Gen. & PB)
12582
 
2
Dr. V.V.Rajani
Res. Scientist (P.)
Ph. D. (Plant Path)
12582
 
3
Dr.G.K.Kataria
Res. Scientist (P.)
Ph.D.(Pl. Physio)
12582
 
4
Dr. M. G. Valu
Asso. Res. Scientist
Ph. D. (Gen. & PB)
12582
 
5
Dr. Rukamsingh Tomar
Asso. Res. Scientist
Ph. D. (Gen. & PB)
12582
Pooled Biotech,
JAU, Junagadh
6
Dr. A.M.Polara
Asstt. Res. Scientist
Ph. D. (Agro)
12582
 
7
Prof. V. L. Kikani
Asst. Res. Scientist
M.Sc (Agro)
2009
 
8
Prof. D.K.Davara
Asst. Res. Scientist
M.Sc. (Plant Path)
2009
 
9
Prof.  M.V.Variya
Asst. Res. Scientist
M.Sc.(Ento)
2009
 
10
G.V. Dulera
Sen. Res. Asstt.
Agril  Diploma
12582
 
11
Patel Komal D.
Sen. Res. Asstt.
M.Sc. (Gen. & PB)
2009
 
12
Shri A.R.Patel
Agril. Officer
M.Sc. (Agonomy)
2009
 
13
K. V. Gondalia
Agril. Assistant
M.Sc.(Ento)
12582
 
14
Shri  J. T. Desai
Agril. Assistant
Agril. Diploma
12582
 
15
H. N. Chaudhari
Agril. Assistant
Agril. Diploma
12582
 
16
Shri T.C. Ghoda
Junior Clerk
 
12582
 
17
V.D.Mandaviya
Lab. boy
 
5009
 
18
 B.R.Sindhal
Farm Labour
 
12009
 
19
 R.K. Ravaliya
Farm Labour
 
12009
 

 

Research Projects and Schemes (On going) :
Project
Objectives
All India Co-ordinated Cotton Improvement Project (B.H.2009).
1. To conduct co-ordinated regional trials of G. hirsutum Cotton.
2. Breeding of superior varieties of tetraploid cultivated cottons (G. hirsutum) for specific objectives such as extra long staple, high fiber strength and maturity and incorporation of resistance to jassid and bacterial blight.
To establish a centre of excellence for cotton research (B.H.12009)
1. To strengthen the cotton research work.
2. To develop improved cotton varieties for the respective regions.
3. To study the problem of cotton cultivation.
Research in Agricultural Chemistry and Soil science( B.H. 5042)
1. To study integrated nutritional trials, Bt cotton trials and to identify optimum dose of fertilizer for Bt cotton for higher production. 
Strengthening research in pulses.
B.H. 5009
1. Evaluation of possibilities short duration pulses as intercrop in cotton production technologies.
Front Line Demonstration.
B.H. 2009-6 
1. To demonstrate the usefulness of latest improved crop production technologies to the farmers as well as extension workers with a view to reduce the time gap between technology generation and its adoption.
2. To enable scientists’ to obtain direct feedback from cotton farmer and suitability reorient their research programme and develop appropriate technology packages.
3. To create effective linkage among scientists, extension workers and farmers.
Testing of Bt cotton trials.
B.H. 18009-09
1. Testing of Bt cotton trials sponsored by different companies.
Strengthening of Research on Genetically Modified Cotton at Junagadh
B.H. 12582
1. To initiate breeding programme on GM cotton.
2. To transfer the new gene (recombinant gene) in stable varieties/ parents of hybrid
3. To develop habit of semi compact plant type with synchronous flowering with high harvest index.
4. To develop improved Bt cotton varieties/hybrids suitable for the Saurashtra region.
5. To study the constraints of Bt cotton cultivation in Saurashtra.
6. To develop appropriate agro-technology and plant protection umbrella for Bt cotton crop.
Establishment of Bt Cotton Research Centre at Kukada (Surendranagar District)
B.H. 12590
1. To test the transgenic (Bt) cotton genotype.
2. To collect, conservation and evaluation cotton germplasm.
3. To develop agro-technology for different eco-system.
4. To develop methodology for suitable use of cotton residues and products.
5. To testing the varieties/ hybrids suitable under climate/ global warming condition.
Publications :
a) Research Paper Published : 48
b) Popular articles : 45
c) Books Published : 6
Future Outlook : 
Recent problems of cotton :
1.     Heavy incidence of pink bollworm
2.     Heavy incidence of sucking pests
3.     Reddening of cotton in Bt hybrids
4.     Para wilt of cotton
5.     Effect of production potential in respect to climatic changes
6.     Nutrient deficiencies of Bt hybrids
7.     Higher cost of crop production technology
8.     Irrigation management specially for adoption of drip irrigation in Bt cotton
Targets :
1.     Yield enhancement and stability in production of cotton through versatile varieties/hybrids of different maturity groups for different growing conditions
2.     Quality enhancement in relation to the demand of cotton industries.
3.     To develop input responsive varieties of cotton in for Saurashtra region.
4.     To boost up production technology of cotton that is more friendly to harsh environment in terms of sustaining and utilizing natural resources i.e biofertilizers, water and land.
Mile stone:
1.     Development of high yielding vairieties having stable performance, consumer friendly quality and tolerance to biotic and abiotic stresses.
2.     Development of high yielding hybrids for Saurashtra region.
3.     Development of resources responsive varieties / hybrids of cotton
4.     Production technology for specific crop system based
5.     Identification of genotype resistance against major diseases and insect pests
Recommendations/ Achievements:

Varietal Improvement:

1.     G.Cot.18 (GJHV-34) is recommended for rainfed condition in wagad zone and rainfed as well as irrigated condition for Junagadh district Yield kg/ha-1535 kg/ha (Year: 1999-00).
2.     Provided contribution in testing, evaluation and release of cotton hybrids/ varieties G.Cot –10, G.Cot–100, G.Cot–12, G.Cot–14 and hybrids G.Cot.hy-4, G.Cot.hy-6, G.Cot.hy-8, G.Cot.hy-10 and G.Cot.hy-12.
3.    The farmers of Non Bt cotton (Gossypium hirsutum L.) growing areas of Gujarat state are advised to grow variety GJ Cot-101 under irrigated condition. This variety has recorded a seed cotton yield of 2107 kg/ha, which was 13.5%, 39.9%, 18.7% and 48.1% higher than the local check varieties viz., G.Cot-18 in South Saurashtra zone, G.Cot-10 in South Gujarat zone, G.Cot-16 in North Gujarat zone and zonal check LRA-5166 in central zone, respectively. The calculated lint yield 676 kg/ha was produced by GJ. Cot-101, which was 9.6%, 23.8%, 17.5% and 41.7% higher than local check varieties G.Cot-18, G.Cot-10, G.Cot-16 and zonal check LRA-5166, respectively. It has 32.0 % ginning outturn and 18.34 % oil content in seed. This variety is medium in maturity. It is found moderately resistant to alternaria leaf spot disease (2012-13).

Agronomy:

4.     The farmers of South Saurashtra Agro-climatic Zone, who are growing irrigated Bt. cotton recommended to sow Seasame or Groundnut (Bunch) or Jowar (F) or Maize (F) after Bt. Cotton to get higher net return. (Year: 2010-11).
5.     Farmers of Junagadh District are advised to sow G.Cot.Hy.6 at 90 x 30 cm or 90 x 45 cm. Spacing with application of 160 kg N/ha. Of the total nitrogen 25% of nitrogen should be applied as basal dressing and remaining 75% of nitrogen should be applied in three equal splits at an interval of one month from basal dressing. Application of phosphorus and potash is not recommended.
6.     For securing higher seed cotton yield and net realization as well as net ICBR,farmers of South Saurashtra Zone – VII growing irrigated cotton G.Cot.Hy.8 are advised to sow at 90 x 30 cms. Spacing with application of 80 kg N/ha.
7.     The farmers of South Saurashtra Agro-climatic zone growing cotton Bt. RCH-2 Bt under irrigated condition are advised to follow the spacing of 120 X 45 cm and apply 160 kg N/ha to get higher yield and net income. (Year: 2009-10).
8.     The farmers of South Saurashtra Agro- climatic Zone growing cotton Bt. Hybrid VICH-5 under irrigated condition are advised to spray 3 % KNO3 at flowering, boll initiation and 50% boll formation to get higher yield and net income. (Year: 2009-10).
9.     The farmers of South Saurashtra Agro-climatic zone sowing Bt cotton in black calcareous soil are advised to apply Potassium @ 150 kg basal or split (½ as basal + ½ at 30DAS) along with 50 kg zinc sulphate per hectare addition to recommended fertilizer dose (N 160 kg/ha) to cotton for getting maximum yield and net return (2012-13).
10.  The farmers of South Saurashtra Agro-climatic Zone Bt cotton in medium black calcareous soil are advised to apply FYM @ 10 t/ha, Nitrogen @ 240 kg/ha (four split, 25 % of at sowing and remaining three equal dose at 30, 60, and 90 DAS) and P2O5 @ 50 kg/ha (two split, ½ at basal and ½ at 60 DAS) per hectare to cotton crop for getting maximum yield and net return (2012-13). 
11.  The farmers of South Saurashtra Agro Climatic Zone growing Bt cotton under irrigated condition are advised to spray  water soluble fertilizer 1 % (19-19-19, NPK) in addition to RDF(240-50-150 NPK kg/ha)at flowering, boll formation and boll development stage of the cotton to obtain higher seed cotton yield.
દક્ષિણ સૌરાષ્ટ્ર ખેત આબોહવાકીય વિસ્તારમાં પિયત બી.ટી. કપાસનું વાવેતર કરતા ખેડૂતોને વધારે ઉત્પાદન મેળવવા માટે ભલામણ કરેલ રાસાયણીક ખાતર(૨૪૦-૫૦-૧૫૦ ના.ફો.પો. કિ.ગ્રા./હે.) ઉપરાંત કપાસની ફુલ અવસ્થા, જીંડવાની અવસ્થા તેમજ જીંડવાના વિકાસની અવસ્થા દરમ્યાન ૧% (૧૯-૧૯-૧૯, ના.ફો.પો.)નો છંટકાવ કરવાની સલાહ આપવામાં આવે છે.
Entomology:
11.  Control of pink bollworm in cotton, it is recommended to the farmers of Saurashtra region that the spraying of quinalphos @ 500 gai./ha (Quinalphos 25 EC 28 ml/10 lit. water) or spinosad @ 50 gai/ha (Spinosad 45 SC 2 ml/10 lit. water) when pest crosses the ETL (10 male moths collected in pheromone trap per day) (2003-04).
12.  Management of pests of cotton, the following IPM strategies are recommended for cotton growing farmers of Saurashtra (ICBR 1:5.70) (2003-04).
      (i)   Seed treatment with Imidacloprid @ 10 g/kg seeds
      (ii)  Hand collection of infected shoots of spotted bollworm in the early stage.
      (iii) Installation of pheromone trap @ 5/ha, one week after germination to monitor the bollworm infestation
      (iv)  Early release of Chrysoperla @ 10,000  eggs/larvae/ha (3 releases)
      (v)  Spraying of Neem formulations or Neem seed kernal suspension @ 5 %
      (vi). Release of Trichogramma @ 1.5 lakh/ha (4 relaeses)
      (vii) Spraying of HNPV @ 450 LE/ha for Helicoverpa
      (viii) Hand collection of eggs and larvae of Helicoverpa
      (ix) Planting of maize as a intercrop (10:1), marigold and castor as a trap crop in and around the cotton
      (x)  Need based application of insecticides for sucking pests and bollworms based on ETL 
13.  Farmers of South Saurashtra Agro-climatic Zone, growing cotton are advised to apply three spray of thiamethoxam 25 WG @ 25 gai/ha (2 g / 10 l water) for effective and economic control of sucking pests (jassids and whitefly) at 15 day interval starting from the pest infestation. The waiting period of thiamethoxam 25 WG @ 25 g a.i./ha should be maintained 21 days between last spray and harvesting of the crop (2011-12).
14.  Farmers of South Saurashtra Agro-climatic Zone, growing cotton are advised to apply three spray of imidacloprid 200 SL @ gai /ha (40 ml/10 lit. water) or thiamethoxam 25 WG @ 25 gai /ha (2 g / 10 lit. water) or acephate 75 SP @ 750 gai /ha (20 g / ha 10 lit. water) for effective and economic control of sucking pests (jassids and whitefly) at 15 day interval starting from the pest infestation. The waiting period of thiamethoxam 25 WG @ 25 g a.i./ha should be maintained 21 days between last spray and harvesting of the crop. The residue of imidacloprid 200 SL @ g a. i. /ha and acephate 75 SP @ 750 g a. i. /ha after first and second picking was found below detection level in cotton lint and seeds (2012-13).
     The farmers of South Saurashtra Agro-climatic Zone growing cotton are advised to apply the following Integrated Pest Management module for control of mealy bug and conservation of Lady bird beetle. However, IPM module also reduced the population of aphids, jassid, thrips, whitefly, mite, mirid bug and maintain population of predators i.e. chrysopa and spider as compared to CFP module but they were non-significant.
1.   Seed treatment withPseudomonas fluorescens@ 10g / kg of seed
2.   Sowing of Castor as a trap and Maize as a border crop (10:1)
3.   Sowing of Black gram as intercrop
4.   Fertilizer application of FYM 10 t/ha + 180-37.50-112.50 NPK kg/ha in three split at basal, 30 DAS and 60 DAS
5.   Need based application of insecticides in sequence viz., Acephate 75 SP (0.113%) 750 g a.i/ha (20 g /10 lit. water), Flonicamid 50 WG (0.015%) 75g a.i/ha (3 g /10 lit. water), Fipronil 5 SC (0.008%) 40 g a.i/ ha (16 ml /10 lit. water) and Buprofezin 25 SC (0.05%) 250 g a.i/ha (20 ml /10 lit. water).
6.   Pre-emergence application of pendimethalin 30 EC (0.20%) @ 1000 g a. i./ha (67 ml/10 lit of water) and Quizalofop ethyl 5 EC (0.01%) @ 50g a. i./ha (20 ml/10 lit of water)  30 DAS forweed control.
7.   Installation of yellow sticky trap @ 5 traps/ha for monitoring of white fly
8.   Installation of pheromone traps @ 5 traps/ha for monitoring of all bollworms
9. Need based application of copper oxychloride 50% WP 0.2% (40 g/10 lit.water), mancozeb 75% WP (0.2%) (27 g /10 lit. water) and Carbendazim 50%WP (0.05%) (10g /10 lit. water)for disease control.(2016-17)
દક્ષિણ સૌરાષ્ટ્રના ખેત આબોહવાકીય વિસ્તારના કપાસ ઉગાડતા ખેડૂતો માટે કપાસની જીવાત મીલીબગ (ચીકટો) ના નિયંત્રણ અને દાળિયાનાં સંરક્ષણ માટે સંકલિત જીવાત વ્યવસ્થાપન મોડ્યુલની ભલામણ કરવામાં આવે છે. તેમ છતા સંકલિત જીવાત વ્યવસ્થાપન મોડ્યુલ મોલોમશી, તડતડીયા, થ્રીપ્સ, સફેદમાખી, કથીરી, મીરીડબગની વસ્તીમા ઘટાડો કરે છે અને પરજીવીઓ જેવા કે, લીલી પોપટી અને કરોળીયાની વસ્તી જાળવી રાખે છે. જે ખેડૂત નિયંત્રણ પ્રયાસોનાં મોડ્યુલની સરખામણીમાં બિન-નોંધપાત્ર છે.
(૧) રોગોના નિયંત્રણ માટે બીજને  સ્યુડોમોનસ ફ્લુંરોસન્સ ૧૦ ગ્રામ/કિગ્રા પ્રમાણે દવાનો પટ આપવો.
(૨) કપાસની ફરતે દીવેલાને પિંજર પાક તરીકે અને કપાસની દસ હાર પછી મકાઈની એક હાર વાવવાથી પરભક્ષી અને પરજીવીઓનું સંરક્ષણ કરી શકાય છે.
(૩) કપાસના પાકમાં આંતર પાક તરીકે અડદનું વાવેતર કરવું.
(૪) સેન્દ્રીય ખાતર ૧૦ ટન/હેક્ટર તથા રાસાયણિક ખાતર ૧૮૦-૩૭.૫૦-૧૧૨.૫૦ ના.ફો.પો. કિલો/હેક્ટર ત્રણ હપ્તામાં પાયામાં વાવેતરના ૩૦ દિવસ અને ૬૦ દિવસ પછી આપવું.
(૫) ક્ષમ્ય માત્રાને ધ્યાને લઇ જરૂર જણાય ત્યારે એસીફેટ ૭૫ એસ.પી. (૦.૧૧૩%) ૭૫૦ સક્રિય તત્વ (૨૦ ગ્રામ / ૧૦ લિટર પાણીમાં), ફ્લોનીકામીડ ૫૦ ડબ્લ્યુ જી (૦.૦૧૫%) ૭૫ સક્રિય તત્વ (૩ ગ્રામ / ૧૦ લિટરપાણીમાં), ફીપ્રોનીલ ૫ એસ સી (૦.૦૦૮%) ૪૦ સક્રિય તત્વ (૧૬ મિલી/ ૧૦ લિટર પાણીમાં) અને બ્રુપ્રોફેઝીન ૨૫ એસ સી (૦.૦૫%) ૨૫૦  સક્રિય તત્વ (૨૦ મિલી/ ૧૦ લિટર પાણીમાં) છટકાવ કરવો.
(૬) નિદામણના નાશ માટે પાક ઉગતા પહેલા પેન્ડીમીથાલીન ૩૦ ઇસી (૦.૨૦%) ૧૦૦૦ ગ્રામ સક્રિય તત્વ (૬૭ મિલી/ ૧૦ લિટરપાણીમાં ) અને ૩૦ દિવસ પછી કિવઝાલોફોપ ઈથાઈલ    ૫ ઇસી (૦.૦૧%) ૫૦ ગ્રામ સક્રિય તત્વ (૨૦ મિલી/ ૧૦ લિટરપાણીમાં) પ્રમાણે આપવું.
(૭) સફેદ માખીની મોજણીમાં ખેતરમાં પીળા રંગના સ્ટીકી ટ્રેપ હેક્ટર દીઠ ૫ લગાડવા.
(૮) ઈયળ વર્ગની જીવાતોની મોજણીમાં ખેતરમાં ફેરોમોન ટ્રેપ  હેક્ટર દીઠ ૫ લગાડવા.
(૯) રોગના નિયંત્રણ માટે જરૂર જણાય તો કોપર ઓકઝી ક્લોરાઇડ ૫૦ ડબ્લ્યુ પી (૦.૨%)  (૪૦ ગ્રામ/ ૧૦ લિટર પાણીમાં),  મેન્કોઝેબ ૭૫ ડબ્લ્યુ પી (૦.૨%) ૧૦૦૦ ગ્રામ સક્રિય તત્વ  (૨૭ ગ્રામ/ ૧૦ લિટર પાણીમાં) અને કાર્બેન્ડાઝીમ ૫૦% ડબ્લ્યુ પી (૦.૦૫%) ૨૫૦ ગ્રામ સક્રિય તત્વ (૧૦ ગ્રામ/ ૧૦ લિટર પાણીમાં) છટકાવ કરવો.(2016-17)
Plant Pathology :
15.  Delinting seed with sulphuric acid @100ml/kg seed and seed dressing with mercuric fungicides 22-3 g/kg seed has been recommended to control seed borne diseases of cotton (RS, Cotton, Surat).
16.  For the control of Alternaria leaf spot of cotton, four sprays of Captafol (Difoltan 0.2%) at an interval of 20 days starting from just after appearance of disease is practicable and economically beneficial (Pathology Dept.,Anand,1978).
17.  Following cultural practices have been found beneficial for reducing the intensity of soil borne diseases like wilt and root rot of cotton (RS, Cotton, Surat).
   (i) Long term crop rotation
   (ii) Balanced NPK
   (iii)Organic manure
   (iv)Mixed cropping of moth and urid
   (v) Irrigation at short intervals
   (vi) Green manuring
   (vii) Destruction of infected debris
18.  Streptocycline @ 0.005 % + Copper Oxichloride 0.2% spray has been recommended for the control of bacterial blight of cotton (RS, Cotton, Surat,1983).
19.  Estimation of yield losses by bacterial blight under natural condition, it causes loss up to 13%. While under artificial inoculated condition, it causes loss up to 35% yield of cotton (Pathology Dept., Navsari, 1990).
20.  Farmers of south Saurashtra Agro-climatic zone are advised to give seed treatment with talc based Pseudomonas fluorescens (Pf-1) @ 10 g/kg seed and apply foliar sprays @ 0.2 % (20 g/10 l) at 30, 50, 70 and 90 days after sowing, for effective and economic management of bacterial leaf blight disease of cotton (2009-10).
21.  The farmers of south Saurashtra are advised to treat the cotton seeds with a ready mixture of carboxin 37.5% + thiram 37.5% DS @ 3.5 g/kg seeds  before sowing for economical and effective control of wilt and root rot complex and to improve  seed cotton yield (2016).
દક્ષિણ સૌરાષ્ટ્ર વિસ્તારમાં કપાસ ઉગાડતા ખેડુતોને ભલામણ કરવામાં આવે છે કે, કપાસના સુકારા અને મુળખાઈ કોમ્પલેક્ષ રોગોના અર્થક્ષમ, અસરકારક નિયંત્રણ અને વધુ ઉત્પાદન મેળવવા માટે બીજને  વાવતા પહેલા કાર્બોકઝીન  ૩૭.પ% + થાયરમ ૩૭.પ% ડી.એસ. નાં તૈયાર મિશ્રણનો ૩.પ ગ્રામ/ પ્રતિ કિલો મુજબ પટ આપવો (2016).
Plant Physiology:
21.  The farmers of South Saurashtra Agro-climatic Zone growing Bt cotton under irrigated condition are advised to spray growth promoter Naphthalene Acetic Acid (NAA) @ 30 ppm (0.3g /10 lit. water) at 50 DAS & 70 DAS for better growth to obtain higher seed cotton yield and net return. This is due to high chlorophyll content, increase in plant height, thickness of leaves, and length of sympodia, no. of squares and no. of bolls (2013-14).
22.  The farmers of South Saurashtra Agro-climatic Zone growing Bt cotton under irrigated condition are advised to spray growth inhibitor Cycocel / Chlormequat Chloride (CCC) @ 40 ppm at 90 DAS (0.4g / 10 lit. water) for minimize buds and bolls shedding to obtained higher seed cotton yield and net return. This is due to high chlorophyll content, increase in thickness of leaves, no.of squares, no.of bolls and minimum buds and bolls shedding (2013-14).
23.  The farmers of South Saurashtra Agro-climatic Zone growing Bt cotton under irrigated condition are recommended for detopping the cotton plant at 75 DAS for balance growth to obtain higher seed cotton yield and net return. This is due to high chlorophyll content, increased in thickness of leaves, increased in length and number of sympodia, increased plant spread and number of bolls. The seed cotton yield increment was recorded from 15 to 21 % as compared to control (2016).
24.  દક્ષિણ સૈારાષ્ટ્ર ખેત આબોહવાકિય વિસ્તારમાં પિયત બી.ટી. કપાસનું  વાવેતર કરતા ખેડૂતોને વધારે ઉત્પાદન, વધુ આર્થિક વળતર અને ખર્ચના પ્રમાણમાં વધુ નફો મેળવવા માટે બી. ટી. કપાસની સપ્રમાણ  વૃધ્ધિ કરવા ૭પદિવસે કપાસના છોડની ટોચ કાપવાની  ભલામણ કરવામાં આવે છે. આમ કરવાથી પાનનાં હરિતદ્રવ્યમાં, પાનની જાડાઈમાં, સિમ્પોડીયાની સંખ્યા તથા લંબાઈ માં,  છોડના ઘેરાવામાં તેમજ  જીંડવાની સંખ્યામાં વધારાના કારણે ઉત્પાદનમાં વધારોથાય છે.આમ કરવાથી કંટ્રોલની સરખામણીમાં ૧૫ થી ૨૧ ટકાનો ઉત્પાદનમાં વધારો મેળવી શકાય છે(2016).