wheat is sowing in winter but cotton is sowing in summer, so how you can inter-cropped them?

Confused question where, wheat is a winter crop but cotton is a summer crop

Can you do inter cropping cotton and wheat? or you want to ask something else, your question need clarity please.

Further, i will suggest you if you want to mention such type of practice done by any scientist (as according to u by Zhang et al., 2010) then please write the title of such article as we can read and suggest you an appropriate answer of your question. This is a way quote the example only in thesis and research paper. I hope you got the point . 

thanks

Dear Ehab A. Ibrahim Ibrahim Draz, and Agha Mushtaq:

Cotton-wheat cropping system is one of the major cropping systems of Pakistan. However, major constraint in cotton-wheat cropping system is reported to be associated with late sowing of wheat. Generally, farmers sow wheat late because of late harvesting of cotton crop and in greed of earning more net return from cotton, they allow cotton to stand in field even up to December. Late sown wheat crop resultantly exhibited poor stand establishment and subsequently with less yield. This is the problem.

Here comes relay cropping or inter cropping (both names are available in literature). Relay cropping is advanced form of intercropping and involves the sowing of second crop in first crop at time when it is at or near to harvest maturity. Further benefits of relay cropping include timely sowing, attainment of more net income per unit area, ecological and biological pest control, yield compensation and increased soil productivity (Wallace et al. 1992; Slosser et al. 2000)

Nasrullah et al. (2010) found that yield was reduced by 1.0–1.5% per day delay in sowing beyond 20th of November. However, preliminary research regarding relay intercropping revealed that wheat showed substantially higher grain yield and biomass when it was surface seeded in standing cotton than delayed sowing after cotton harvest (AARI, 1992).

A review on the detailed benefits of relay cropping has been submitted for publication, hope this review will further explicit the role of relay cropping or inter cropping in arable cropping system.

Now my question:

Obviously we have different cotton cultivars with different yield potential and architectures. Can there be any kind of residual effect or may be shade effect on wheat if relay intercropped in standing cotton varieties or cultivars of different architectures.

Hope now the question is clear.

Reference:

AARI, 1992. Annual Report, Ayub Agricultural Research Institute, Faisalabad, Pakistan.

Wallace, S.U., T. Whitwell, J.H. Palmer, C.E. Hood and S.A. Hull. 1992. Growth of relay intercropped soybean. Agron. J. 84: 968-973.

Slosser, J.E., M.N. Parajulee and D.G. Bordovsky. 2000. Aphis gossypii and their natural enemies on aphid-resistant and aphid-susceptible wheat varieties in wheat- cotton relay intercropping system. Entomol. Exp. Appl. 121: 235-241.

Thank you

There are number ttraits of both wheat and Cotton which can influence better yield realisation under such condition. However it will all depend upon kind of agronomy you are going to adopt I.e at what time wheat will be seeded in standing Cotton. How much time both crop will coexist in the field. Allelopathetic effect of gossypol on wheat germination etc have strong impact on stand establishment etc

Dear Rajbir Yadav:

I have conducted some preliminary trials regarding this.  I found highly significant variation in wheat seedling emergence, plant height, straw yield and stem diameter when wheat was relayed in different cotton cultivars but most interesting thing was wheat plants get higher plant height become lodged down and thus yield was also reduced. Due to lack of facilities, allelopathic potential of cotton was not measured at that time. In future this aspect can be studied

Thank you

I had also preliminary wheat-cotton field experiment for two years. We compared different wheat-cotton production systems. Wheat yield per unit area were significantly higher  in relay intercropping system due to light interception. Higher tillering and spike number per m2 were most remarkable yield parameters in relay intercropping system.     

i agreed @ Mr. Ozgur

Wheat yield declines due to a delay in sowing following cotton harvest. Therefore, relay cropping wheat into standing crop of cotton is recommended.  

Due to timely wheat sowing, it is expected to obtain potential yields. However, this is not the case as reported by Zhang et al. (i) due to reduced light interception. 

Other possible effects could be soil related: reduced germination as the soil is not prepared prior to sowing. 

Weeds are not controlled to a desirable extent and offers competition to the wheat. 

Soil moisture is limiting as cotton is extracting soil moisture and nutrients.

For this system to be ideal, it would be to have a short-duration cotton crop that vacates the field totally before taking up a sequential crop of wheat.